{"id":202801,"date":"2025-03-18T06:18:05","date_gmt":"2025-03-18T06:18:05","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=202801"},"modified":"2025-03-18T06:18:07","modified_gmt":"2025-03-18T06:18:07","slug":"which-data-encoding-technology-is-used-in-fiber-optic-cables-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/18\/which-data-encoding-technology-is-used-in-fiber-optic-cables-2\/","title":{"rendered":"Which data encoding technology is used in fiber-optic cables"},"content":{"rendered":"\n

Which data encoding technology is used in fiber-optic cables?<\/p>\n\n\n\n

pulses of light
modulation of electrical voltage
modulation of specific frequencies of electromagnetic waves
electrical pulses<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

Correct Answer:<\/h3>\n\n\n\n

Pulses of light<\/strong><\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

Fiber-optic cables use pulses of light<\/strong> to transmit data over long distances with high speed and minimal signal loss. Unlike traditional copper cables, which use electrical signals, fiber-optic cables rely on total internal reflection<\/strong> to guide light through the cable\u2019s core. This allows data to travel at nearly the speed of light.<\/p>\n\n\n\n

How It Works:<\/strong><\/h4>\n\n\n\n
    \n
  1. Encoding Data into Light Pulses:<\/strong><\/li>\n<\/ol>\n\n\n\n
      \n
    • A laser or LED light source generates pulses of light representing binary data (0s and 1s).<\/li>\n\n\n\n
    • A pulse of light corresponds to a binary “1,” while the absence of a pulse represents a binary “0.”<\/li>\n<\/ul>\n\n\n\n
        \n
      1. Transmission Through the Fiber:<\/strong><\/li>\n<\/ol>\n\n\n\n
          \n
        • The fiber core is made of glass or plastic with a high refractive index, surrounded by cladding with a lower refractive index.<\/li>\n\n\n\n
        • Due to total internal reflection, light is continuously reflected within the core, allowing it to travel long distances without escaping.<\/li>\n<\/ul>\n\n\n\n
            \n
          1. Decoding at the Receiver End:<\/strong><\/li>\n<\/ol>\n\n\n\n
              \n
            • A photodetector at the receiving end converts the light pulses back into electrical signals.<\/li>\n\n\n\n
            • These signals are then processed by network devices such as routers or computers.<\/li>\n<\/ul>\n\n\n\n

              Why Fiber-Optic is Superior to Electrical Transmission?<\/strong><\/h4>\n\n\n\n
                \n
              • Higher Speed:<\/strong> Can transmit data at speeds up to terabits per second.<\/li>\n\n\n\n
              • Lower Signal Loss:<\/strong> Less attenuation over long distances compared to electrical cables.<\/li>\n\n\n\n
              • Immunity to Electromagnetic Interference:<\/strong> Unlike electrical signals, light is not affected by external electromagnetic interference.<\/li>\n\n\n\n
              • Greater Bandwidth:<\/strong> Can carry more data than copper cables.<\/li>\n<\/ul>\n\n\n\n

                Thus, pulses of light<\/strong> are the fundamental data encoding technology used in fiber-optic communication systems.<\/p>\n","protected":false},"excerpt":{"rendered":"

                Which data encoding technology is used in fiber-optic cables? pulses of lightmodulation of electrical voltagemodulation of specific frequencies of electromagnetic waveselectrical pulses The correct answer and explanation is : Correct Answer: Pulses of light Explanation: Fiber-optic cables use pulses of light to transmit data over long distances with high speed and minimal signal loss. Unlike […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-202801","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/202801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=202801"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/202801\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=202801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=202801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=202801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}