{"id":289,"date":"2026-07-22T17:05:02","date_gmt":"2026-07-22T09:05:02","guid":{"rendered":"https:\/\/www.ronglitong.com\/?p=289"},"modified":"2026-07-23T13:13:19","modified_gmt":"2026-07-23T05:13:19","slug":"superluminescent-diode-sld","status":"publish","type":"post","link":"https:\/\/www.ronglitong.com\/zh-cht\/product\/superluminescent-diode-sld\/","title":{"rendered":"Superluminescent Diode (SLD)"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Overview<\/strong><\/p>\n\n\n\n

The SLD is the optical source for FOGs. It is a key component that enables FOGs to achieve high sensitivity, low noise, high reliability, stability, and long service life.<\/p>\n\n\n\n

This product is available in two versions: low polarization and high polarization. It offers stable output power, good spectral symmetry, and high reliability across the full temperature range. Manufactured using microelectronic and micro-optic processes, combined with advanced coupling and packaging technologies, it is offered with several fiber pigtail options, including high\u2011PER PM fiber, low\u2011PER single\u2011mode fiber, and high\u2011power versions. These options make it suitable for various types and accuracy grades of FOGs. Custom specifications and tailored technical solutions are also available upon request.<\/p>\n\n\n\n

Beyond FOGs, the SLD is also used in biomedical imaging, fiber optic sensing, instrumentation, and other fields. It is housed in a standard butterfly 8\u2011pin hermetic package, and can be temperature\u2011controlled via external circuitry for long\u2011term stable operation.<\/p>\n\n\n\n

Technical Specifications<\/strong><\/p>\n\n\n\n

High\u2011PER SLD<\/strong><\/p>\n\n\n\n

Category<\/strong><\/td>Parameter<\/strong><\/td>Symbol<\/strong><\/td>Unit<\/strong><\/td>Typical Value<\/strong><\/td><\/tr>
Optical<\/td>Center Wavelength<\/td>\u03bbc<\/sub><\/td>nm<\/td>1310 \u00b1 20<\/td><\/tr>
Spectral Width<\/td>BW<\/td>nm<\/td>\u2265 30<\/td><\/tr>
Output Power @100mA<\/td>P<\/td>\u00b5<\/sub>W<\/td>\u2265 600<\/td><\/tr>
Spectral Ripple<\/td>Ripple<\/td>dB<\/td>\u2264 0.3<\/td><\/tr>
Polarization Extinction Ratio<\/td>PER<\/td>dB<\/td>\u2265 13<\/td><\/tr>
Full\u2011Temp Power Variation<\/td>\u0394<\/sub>P<\/td>%<\/td>\u2264 3<\/td><\/tr>
Electrical<\/td>TEC Operating Current<\/td>ITEC<\/sub><\/td>mA<\/td>\u2264 700 (within full\u2011temp steady\u2011state operation)<\/td><\/tr>
Max TEC Startup Current<\/td>ITmax<\/sub><\/td>mA<\/td>\u2265 1200 (for fast startup)<\/td><\/tr>
Package \/ Mechanical<\/td>Package Style<\/td>\u2014<\/td>\u2014<\/td>Butterfly 8\u2011pin<\/td><\/tr>
Package Dimensions<\/td>\u2014<\/td>mm<\/td>22 \u00d7 12.6 \u00d7 8.0<\/td><\/tr>
Fiber Pigtail Type<\/td>\u2014<\/td>\u2014<\/td>PM \/ SM<\/td><\/tr>
Fiber Pigtail Length<\/td>L<\/td>m<\/td>\u2265 1.0<\/td><\/tr>
Environmental<\/td>Operating Temperature<\/td>Tw<\/sub><\/td>\u00b0C<\/td>-45 ~ +70<\/td><\/tr>
Storage Temperature<\/td>Ts<\/sub><\/td>\u00b0C<\/td>-55 ~ +85<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Low\u2011PER SLD<\/strong><\/p>\n\n\n\n

Category<\/strong><\/td>Parameter<\/strong><\/td>Symbol<\/strong><\/td>Unit<\/strong><\/td>Typical Value<\/strong><\/td><\/tr>
Optical<\/td>Center Wavelength<\/td>\u03bbc<\/sub><\/td>nm<\/td>1305 \u00b1 15<\/td><\/tr>
Spectral Width<\/td>BW<\/td>nm<\/td>\u2265 35<\/td><\/tr>
Output Power @100mA<\/td>P<\/td>\u00b5<\/sub>W<\/td>\u2265 800<\/td>\u2265 200<\/td><\/tr>
Spectral Ripple<\/td>Ripple<\/td>dB<\/td>\u2264 0.2<\/td><\/tr>
Polarization Extinction Ratio<\/td>PER<\/td>dB<\/td>\u2264 1<\/td><\/tr>
Full\u2011Temp Power Variation<\/td>\u0394<\/sub>P<\/td>%<\/td>\u2264 3<\/td><\/tr>
Electrical<\/td>TEC Operating Current<\/td>ITEC<\/sub><\/td>mA<\/td>\u2264 700 (within full\u2011temp steady\u2011state operation)<\/td><\/tr>
Max TEC Startup Current<\/td>ITmax<\/sub><\/td>mA<\/td>\u2265 1200 (for fast startup)<\/td><\/tr>
Package \/ Mechanical<\/td>Package Style<\/td>\u2014<\/td>\u2014<\/td>Butterfly 8\u2011pin<\/td><\/tr>
Package Dimensions<\/td>\u2014<\/td>mm<\/td>22 \u00d7 12.6 \u00d7 8.0<\/td><\/tr>
Fiber Pigtail Type<\/td>\u2014<\/td>\u2014<\/td>PM \/ SM<\/td><\/tr>
Fiber Pigtail Length<\/td>L<\/td>m<\/td>\u2265 1.0<\/td><\/tr>
Environmental<\/td>Operating Temperature<\/td>Tw<\/sub><\/td>\u00b0C<\/td>-45 ~ +70<\/td><\/tr>
Storage Temperature<\/td>Ts<\/sub><\/td>\u00b0C<\/td>-55 ~ +85<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

Overview The SLD is the optical source for FOGs. It is a key component that enables FOGs to achieve high […]<\/p>\n","protected":false},"author":1,"featured_media":322,"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":"disabled","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":[5,4],"tags":[],"class_list":["post-289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiber-optic-gyroscope","category-product"],"_links":{"self":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts\/289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/comments?post=289"}],"version-history":[{"count":2,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts\/289\/revisions"}],"predecessor-version":[{"id":323,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/posts\/289\/revisions\/323"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/media\/322"}],"wp:attachment":[{"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/media?parent=289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/categories?post=289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ronglitong.com\/zh-cht\/wp-json\/wp\/v2\/tags?post=289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}