{"id":8982,"date":"2026-06-01T08:58:08","date_gmt":"2026-06-01T07:58:08","guid":{"rendered":"https:\/\/yfconnectivity.com\/?p=8982"},"modified":"2026-06-01T09:06:13","modified_gmt":"2026-06-01T08:06:13","slug":"what-is-unmerical-aperture","status":"publish","type":"post","link":"https:\/\/yfconnectivity.com\/pt-br\/what-is-unmerical-aperture\/","title":{"rendered":"What Is Numerical Aperture (NA) in Fiber Optics?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8982\" class=\"elementor elementor-8982\" data-elementor-post-type=\"post\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-9241746 e-flex e-con-boxed e-con e-parent\" data-id=\"9241746\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-23b7239 elementor-widget elementor-widget-text-editor\" data-id=\"23b7239\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"173\" data-end=\"428\">If you&#8217;re just stepping into the world of fiber optics, all the technical terms and abbreviations can feel overwhelming. That\u2019s why I created this <a href=\"https:\/\/yfconnectivity.com\/blog\/\">fiber glossary series<\/a> \u2014 to help you understand what these terms really mean, in the simplest way possible.<\/p><p data-start=\"430\" data-end=\"726\">I\u2019ll explain everything from an industry insider\u2019s point of view, using real photos whenever I can (not just fancy renders). I also avoid overly complex explanations, keeping the language clear and direct, so you can be confident you\u2019ll understand the real meaning of these terms after reading.<\/p><p data-start=\"728\" data-end=\"784\">Today, we\u2019re going to talk about: <strong>Numerical Aperture (NA)<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e80493 elementor-toc--content-ellipsis elementor-widget__width-initial elementor-hidden-desktop elementor-hidden-tablet elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"2e80493\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;container&quot;:&quot;.main-content&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0,&quot;sizes&quot;:[]},&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTABLE OF CONTENTS\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__2e80493\" aria-expanded=\"true\" aria-label=\"Abrir tabela de conte\u00fado\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__2e80493\" aria-expanded=\"true\" aria-label=\"Fechar o \u00edndice\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__2e80493\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b8727a elementor-widget elementor-widget-heading\" data-id=\"5b8727a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Is Numerical Aperture (NA)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47d61a4 elementor-widget elementor-widget-text-editor\" data-id=\"47d61a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Numerical Aperture (NA) is a dimensionless parameter that describes an optical fiber&#8217;s ability to collect and guide light. It determines the maximum range of angles at which light can enter the fiber and still remain confined within the core through total internal reflection.<\/p><p>In simple terms, NA indicates how easy it is for light to enter a fiber. A larger NA allows the fiber to accept light from a wider range of angles, while a smaller NA requires more precise alignment but provides better control of light propagation. As a result, NA plays an important role in fiber coupling efficiency, <a href=\"https:\/\/yfconnectivity.com\/fiber-optic-single-mode-vs-multimode\/\">mode propagation<\/a>, and overall optical system design.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a92a77 elementor-widget elementor-widget-image\" data-id=\"7a92a77\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA-1024x683.webp\" class=\"attachment-large size-large wp-image-8987\" alt=\"\" srcset=\"https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA-1024x683.webp 1024w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA-300x200.webp 300w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA-768x512.webp 768w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA-18x12.webp 18w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA-600x400.webp 600w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/acceptance-angle-and-NA.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2fa9a02 elementor-widget elementor-widget-heading\" data-id=\"2fa9a02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Does Numerical Aperture Actually Mean?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de307ef elementor-widget elementor-widget-text-editor\" data-id=\"de307ef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">For beginners, the easiest way to understand Numerical Aperture is to think of it as a fiber&#8217;s &#8220;light acceptance ability.&#8221;<\/p><p class=\"isSelectedEnd\">Imagine two funnels placed outside during a rainstorm.<\/p><p class=\"isSelectedEnd\">One funnel has a wide opening, while the other has a narrow opening. The wider funnel can collect rainwater more easily because it accepts water from a larger range of directions.<\/p><p class=\"isSelectedEnd\">Optical fibers behave in a similar way.<\/p><p class=\"isSelectedEnd\">A fiber with a larger Numerical Aperture can accept light over a wider range of input angles, making it easier to couple light into the fiber. A fiber with a smaller Numerical Aperture accepts light only within a narrower angle range and therefore requires more precise alignment.<\/p><p>This is why Numerical Aperture is often considered one of the most important parameters when designing fiber optic communication systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f73a459 elementor-widget elementor-widget-heading\" data-id=\"f73a459\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Understanding the Acceptance Angle<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81b0cee elementor-widget elementor-widget-text-editor\" data-id=\"81b0cee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Not every light ray that reaches the end face of a fiber can successfully travel through it.<\/p><p class=\"isSelectedEnd\">For light to remain guided inside the core, it must enter the fiber within a specific range of angles. If the angle is too large, the light will not satisfy the conditions for total internal reflection and will escape into the cladding.<\/p><p class=\"isSelectedEnd\">The maximum angle at which light can enter the fiber and still propagate through the core is called the <strong>Acceptance Angle<\/strong>.<\/p><p class=\"isSelectedEnd\">Numerical Aperture is essentially a measurement of this acceptance capability.<\/p><p class=\"isSelectedEnd\">A larger Acceptance Angle means the fiber can collect light more easily. A smaller Acceptance Angle means the incoming light must be aligned more precisely.<\/p><p>This relationship is one of the primary reasons why Numerical Aperture is widely used when evaluating fiber coupling performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff9c75a elementor-widget elementor-widget-heading\" data-id=\"ff9c75a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Is Numerical Aperture Calculated?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c7b1be elementor-widget elementor-widget-text-editor\" data-id=\"6c7b1be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Numerical Aperture can be expressed using the Acceptance Angle:<\/p><p class=\"isSelectedEnd\"><strong>NA = n\u2080 sin \u03b8\u2090<\/strong><\/p><p class=\"isSelectedEnd\">Where:<\/p><ul data-spread=\"false\"><li>n\u2080 is the refractive index of the surrounding medium (approximately 1 in air)<\/li><li>\u03b8\u2090 is the Acceptance Angle (half-angle)<\/li><\/ul><p class=\"isSelectedEnd\">For optical fibers, Numerical Aperture can also be calculated using the refractive indices of the core and cladding:<\/p><p class=\"isSelectedEnd\"><strong>NA = \u221a(n\u2081\u00b2 \u2212 n\u2082\u00b2)<\/strong><\/p><p class=\"isSelectedEnd\">Where:<\/p><ul data-spread=\"false\"><li>n\u2081 is the refractive index of the fiber core<\/li><li>n\u2082 is the refractive index of the cladding<\/li><\/ul><p class=\"isSelectedEnd\">This equation shows that Numerical Aperture is directly related to the refractive index difference between the core and cladding.<\/p><p>In other words, a larger refractive index difference generally results in a larger Numerical Aperture.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c54d2ad elementor-widget elementor-widget-heading\" data-id=\"c54d2ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Is Numerical Aperture Important?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-752b093 elementor-widget elementor-widget-text-editor\" data-id=\"752b093\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"4000\" data-end=\"4096\">Although Numerical Aperture is a simple parameter, it affects several important aspects of fiber performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e733660 elementor-widget elementor-widget-heading\" data-id=\"e733660\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. It Determines How Easily Light Enters the Fiber<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c0623f elementor-widget elementor-widget-text-editor\" data-id=\"0c0623f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">The most direct effect of Numerical Aperture is on light coupling.<\/p><p class=\"isSelectedEnd\">A fiber with a large NA can accept light from a wider range of angles, making it easier to launch optical power into the fiber.<\/p><p class=\"isSelectedEnd\">This is particularly useful when using light sources such as LEDs, which emit light over relatively broad angles.<\/p><p>In contrast, fibers with smaller NA values require more precise alignment between the light source and the fiber.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04d91c8 elementor-widget elementor-widget-heading\" data-id=\"04d91c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. It Affects Coupling Efficiency<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a39ee4 elementor-widget elementor-widget-text-editor\" data-id=\"7a39ee4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Coupling efficiency describes how much optical power successfully enters the fiber.<\/p><p class=\"isSelectedEnd\">A larger Numerical Aperture generally improves coupling efficiency because the fiber can capture a greater portion of the incoming light.<\/p><p class=\"isSelectedEnd\">This is one reason why multimode fibers are often easier to connect and align than single-mode fibers.<\/p><p>In practical applications, coupling efficiency directly influences insertion loss and overall system performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f02a54 elementor-widget elementor-widget-heading\" data-id=\"2f02a54\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. It Influences Supported Modes<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-734e792 elementor-widget elementor-widget-text-editor\" data-id=\"734e792\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Numerical Aperture also affects how light propagates inside the fiber.<\/p><p class=\"isSelectedEnd\">Fibers with larger NA values can support a greater number of propagation modes. This is one reason why multimode fibers typically have larger Numerical Apertures.<\/p><p class=\"isSelectedEnd\">Fibers with smaller NA values support fewer modes and provide better control over light propagation.<\/p><p class=\"isSelectedEnd\">As a result:<\/p><ul data-spread=\"false\"><li>Multimode fibers generally have higher NA values.<\/li><li>Single-mode fibers generally have lower NA values.<\/li><\/ul><p>This relationship helps explain why single-mode fibers are preferred for long-distance, high-bandwidth communication systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-274592f elementor-widget elementor-widget-heading\" data-id=\"274592f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Numerical Aperture and Relative Refractive Index Difference<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1895c7b elementor-widget elementor-widget-text-editor\" data-id=\"1895c7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"flex max-w-full flex-col gap-4 grow\"><div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"d9a7702e-e0d3-4805-8cf8-d4125bee7702\" data-message-model-slug=\"gpt-5-5\" data-turn-start-message=\"true\"><div class=\"flex w-full flex-col gap-1 empty:hidden\"><div class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"><p class=\"isSelectedEnd\">Numerical Aperture is closely related to Relative Refractive Index Difference (\u0394).<\/p><p class=\"isSelectedEnd\">The relationship can be simplified as:<\/p><p class=\"isSelectedEnd\"><strong>Larger \u0394 \u2192 Larger NA \u2192 Larger Acceptance Angle<\/strong><\/p><p class=\"isSelectedEnd\">When the refractive index difference between the core and cladding increases, the fiber can confine light more strongly. This allows the fiber to accept light over a wider range of angles, resulting in a higher Numerical Aperture.<\/p><p class=\"isSelectedEnd\">Conversely, a smaller \u0394 generally produces a smaller NA and a narrower Acceptance Angle.<\/p><p>This is why <a href=\"https:\/\/yfconnectivity.com\/single-mode-fiber-types-guide\/\">single-mode fibers<\/a> typically use smaller values of \u0394, while multimode fibers often use larger values.<\/p><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c798aa elementor-widget elementor-widget-image\" data-id=\"7c798aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA-1024x683.webp\" class=\"attachment-large size-large wp-image-8986\" alt=\"\" srcset=\"https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA-1024x683.webp 1024w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA-300x200.webp 300w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA-768x512.webp 768w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA-18x12.webp 18w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA-600x400.webp 600w, https:\/\/yfconnectivity.com\/wp-content\/uploads\/2026\/06\/relative-refractive-index-difference-and-NA.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4477848 elementor-widget elementor-widget-heading\" data-id=\"4477848\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Typical Numerical Aperture Values<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-615430d elementor-widget elementor-widget-text-editor\" data-id=\"615430d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"flex max-w-full flex-col gap-4 grow\"><div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"d9a7702e-e0d3-4805-8cf8-d4125bee7702\" data-message-model-slug=\"gpt-5-5\" data-turn-start-message=\"true\"><div class=\"flex w-full flex-col gap-1 empty:hidden\"><div class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"><p class=\"isSelectedEnd\">Different types of optical fibers use different Numerical Aperture values depending on their design goals.<\/p><table><tbody><tr><th>Fiber Type<\/th><th>Typical NA<\/th><\/tr><tr><td>Single-Mode Fiber<\/td><td>0.10 \u2013 0.14<\/td><\/tr><tr><td>OM1 Multimode Fiber<\/td><td>0.20 \u2013 0.29<\/td><\/tr><tr><td>OM2 Multimode Fiber<\/td><td>0.20 \u2013 0.29<\/td><\/tr><tr><td>OM3 Multimode Fiber<\/td><td>~0.20<\/td><\/tr><tr><td>OM4 Multimode Fiber<\/td><td>~0.20<\/td><\/tr><tr><td>OM5 Multimode Fiber<\/td><td>~0.20<\/td><\/tr><\/tbody><\/table><p>In general, multimode fibers have larger Numerical Apertures because they are designed to collect light more easily and support multiple propagation modes.<\/p><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca7d474 elementor-widget elementor-widget-heading\" data-id=\"ca7d474\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">A Simple Analogy to Understand Numerical Aperture<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8edaefc elementor-widget elementor-widget-text-editor\" data-id=\"8edaefc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"flex max-w-full flex-col gap-4 grow\"><div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"d9a7702e-e0d3-4805-8cf8-d4125bee7702\" data-message-model-slug=\"gpt-5-5\" data-turn-start-message=\"true\"><div class=\"flex w-full flex-col gap-1 empty:hidden\"><div class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"><p class=\"isSelectedEnd\">Imagine trying to throw a ball into a bucket.<\/p><p class=\"isSelectedEnd\">A bucket with a large opening is easier to hit because it can accept the ball from a wider range of directions.<\/p><p class=\"isSelectedEnd\">A bucket with a small opening requires much more precise aim.<\/p><p class=\"isSelectedEnd\">Numerical Aperture works in a similar way.<\/p><p class=\"isSelectedEnd\">A higher NA creates a larger optical &#8220;target,&#8221; making it easier for light to enter the fiber.<\/p><p>A lower NA creates a smaller target, requiring more precise alignment but providing greater control over light propagation.<\/p><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ab8e92 elementor-widget elementor-widget-heading\" data-id=\"8ab8e92\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently Asked Questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-701feec elementor-widget elementor-widget-n-accordion\" data-id=\"701feec\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;expanded&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1170\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-1170\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is a higher Numerical Aperture always better? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1170\" class=\"elementor-element elementor-element-40a6522 e-con-full e-flex e-con e-child\" data-id=\"40a6522\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d04153f elementor-widget elementor-widget-text-editor\" data-id=\"d04153f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">No. A higher NA improves light collection and coupling efficiency, but it can also support more propagation modes. The optimal value depends on the application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1171\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1171\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is the typical NA of single-mode fiber? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1171\" class=\"elementor-element elementor-element-8d63520 e-flex e-con-boxed e-con e-child\" data-id=\"8d63520\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e75bb63 elementor-widget elementor-widget-text-editor\" data-id=\"e75bb63\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Most standard single-mode fibers have a Numerical Aperture between approximately 0.10 and 0.14.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1172\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1172\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is the relationship between NA and Acceptance Angle? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1172\" class=\"elementor-element elementor-element-79f1d74 e-con-full e-flex e-con e-child\" data-id=\"79f1d74\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-663d8bb elementor-widget elementor-widget-text-editor\" data-id=\"663d8bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1438\" data-end=\"1536\">A larger Numerical Aperture corresponds to a larger Acceptance Angle, allowing the fiber to collect light from a wider range of directions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1173\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1173\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is the relationship between NA and Relative Refractive Index Difference? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1173\" class=\"elementor-element elementor-element-9df94c1 e-flex e-con-boxed e-con e-child\" data-id=\"9df94c1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-532a77d elementor-widget elementor-widget-text-editor\" data-id=\"532a77d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1916\" data-end=\"1932\">In general, a larger Relative Refractive Index Difference (\u0394) results in a larger Numerical Aperture.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08800f5 elementor-widget elementor-widget-heading\" data-id=\"08800f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dab2e9e elementor-widget elementor-widget-text-editor\" data-id=\"dab2e9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Numerical Aperture (NA) is one of the most important parameters in fiber optics because it describes how effectively a fiber can collect and guide light. It directly influences Acceptance Angle, coupling efficiency, supported propagation modes, and overall fiber performance.<\/p><p>Although NA is a simple dimensionless value, it plays a critical role in the design and operation of optical communication systems, making it an essential concept for anyone working with fiber optics.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e5cbd3 elementor-widget elementor-widget-heading\" data-id=\"6e5cbd3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Still Have Questions?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f919aef elementor-widget elementor-widget-text-editor\" data-id=\"f919aef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If you&#8217;re still unsure about something, feel free to reach out.<\/p><p>Want to explore more fiber optic terms? Head over to our blog section.<\/p><p>If the term you\u2019re looking for isn\u2019t covered yet, let me know \u2014 I\u2019ll add it to the priority list!<\/p><p>And lastly \u2014 if you\u2019re a telecom provider, network operator, or involved in fiber infrastructure development and looking for a reliable partner in fiber optic components \u2014 feel free to contact to us.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What is Numerical Aperture (NA) in fiber optics? This guide explains how NA determines a fiber&#8217;s light acceptance ability, influences coupling efficiency and propagation modes, and relates to acceptance angle and refractive index difference.<\/p>","protected":false},"author":1,"featured_media":8988,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[66],"tags":[],"class_list":["post-8982","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiber-optic-glossary"],"acf":[],"_links":{"self":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts\/8982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/comments?post=8982"}],"version-history":[{"count":12,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts\/8982\/revisions"}],"predecessor-version":[{"id":9002,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/posts\/8982\/revisions\/9002"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/media\/8988"}],"wp:attachment":[{"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/media?parent=8982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/categories?post=8982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yfconnectivity.com\/pt-br\/wp-json\/wp\/v2\/tags?post=8982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}