{"id":691274,"date":"2024-11-06T05:25:03","date_gmt":"2024-11-06T05:25:03","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/tia-455-2282002-r2012\/"},"modified":"2024-11-06T05:25:03","modified_gmt":"2024-11-06T05:25:03","slug":"tia-455-2282002-r2012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/tia\/tia-455-2282002-r2012\/","title":{"rendered":"TIA-455-228:2002 (R2012)"},"content":{"rendered":"<p>In this procedure, a modulated light source at a given<br \/>\nwavelength is coupled into the component under test, and the phase<br \/>\nshift of the modulated signal exiting the fiber at that wavelength<br \/>\nis recorded with respect to the original modulation signal. The<br \/>\nphase shift can be converted directly to RGD in the device. By<br \/>\ncollecting RGD data at various wavelengths, the chromatic<br \/>\ndispersion of the component can be determined at these and other<br \/>\nwavelengths from the derivative with respect to wavelength of the<br \/>\nrelative group delay.<\/p>\n<p>This FOTP does not apply to components that have in excess of 10<br \/>\ndB of polarization dependent loss (PDL). The main intent of this<br \/>\nFOTP is to determine the average group delay and chromatic<br \/>\ndispersion of the component and moreover to isolate the RGD from<br \/>\nall polarization sensitivity in the device.<\/p>\n<p>Note that in the case of fiber pigtailed components, the<br \/>\npigtails may give a large absolute (standing) delay but also some<br \/>\nrelative delay, over the component test wavelength range. In most<br \/>\ncases of component measurements, only the relative group delay is<br \/>\nof interest, so it is important to account for any RGD in the<br \/>\nleads, and to ensure the standing delay is stable over the<br \/>\nmeasurement time. Any changes in the standing delay and any RGD in<br \/>\nthe leads will be evident in the test results.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>FOTP-228 Relative Group Delay and Chromatic Dispersion Measurement of Single-Mode Components and Devices by the Phase Shift Method<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/tia\/\"><b>TIA<\/b><\/a><\/td>\n<td>2002<\/td>\n<td>52<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":691283,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2646],"product_tag":[],"class_list":{"0":"post-691274","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-tia","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/691274","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/691283"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=691274"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=691274"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=691274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}