This Standard is applicable to single sections of PM fiber, to
\ncascaded PM fibers, and to PM fibers interconnected with optical
\ndevices. It is also applicable to polarization-maintaining
\ncomponents that lack PM fiber pigtails, in which case the
\nmeasurement is performed on a PM fiber jumper connected to the
\noutput of the component. The method requires gently stretching or
\nheating approximately 0.1- 0.3 meters of PM fiber in order to
\ngenerate at least a fraction of a cycle of phase shift between the
\nfast and slow waves. Measurement applications are described in
\nAnnex C. In all applications of this method, the measured crosstalk
\nvalue represents the accumulated crosstalk at the location along
\nthe PM fiber where the stretching or heating is applied,
\nirrespective of the optical fibers and components that follow
\nit.<\/p>\n
Hereafter the test device is referred to as the "sample". The
\nsample must include a section of PM fiber along which the
\npolarization crosstalk is to be measured.<\/p>\n
This Standard complements FOTP-193, which describes the
\nmeasurement of polarization crosstalk at a plane beyond the output
\ninterface of the sample.<\/p>\n
The polarization crosstalk of PM itself, without connectors,
\ntends to be proportional to fiber length. In such cases the
\nproportionality constant, commonly referred to as the
\n"h-parameter," is another measure of PM fiber performance. A test
\nmethod for h-parameter is the subject of FOTP-192.<\/p>\n
This method is restricted to wavelengths greater than or equal
\nto that at which the fiber is effectively single-mode. The cutoff
\nwavelength of an uncabled fiber may be determined by FOTP-80.<\/p>\n","protected":false},"excerpt":{"rendered":"
FOTP-199 In-Line Polarization Crosstalk Measurements Method for Polarization-Maintaining Optical Fibers, Components, and Systems<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n TIA<\/b><\/a><\/td>\n 2002<\/td>\n 32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":691264,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2646],"product_tag":[],"class_list":{"0":"post-691254","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\/691254","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\/691264"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=691254"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=691254"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=691254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}