This part of IEC 61282, which is a technical report, applies to
\nthe accommodation and compensation of dispersion in fibre optic
\ncommunication systems.<\/p>\n
Generally, dispersion compensation and accommodation is used in
\nthe 1 550 nm region with cables incorporating conventional
\n(dispersion-unshifted) single-mode category B1 fibre as shown in
\nIEC 60793-1 and IEC 60793-2. In this wavelength region, the fibre
\nhas a positive dispersion coefficient that averages at about 17
\nps\/nm\u2013km. There are two subcategories of such fibre. The cutoff
\nwavelength of B1 fibre is low enough for the fibre to be used in
\neither the 1 310 nm or the 1 550 nm region. Such fibre makes up the
\nvast majority of installed fibre optic cable world wide. The cutoff
\nwavelength of B1.2 fibre is high enough for the fibre to be used in
\nthe 1 550 nm region only. Such fibre is used in some submarine
\nsystems.<\/p>\n
Smaller values of dispersion are attainable with
\ndispersion-shifted category B2 fibre and with non-zero-dispersion
\ncategory B4 fibre. Dispersion accommodation or compensation may
\nsometimes be used with these fibre types as well, but only category
\nB1 fibres will be discussed in this technical report.<\/p>\n
Compensation refers to techniques or components that reduce the
\nvalue of the dispersion or the dispersion slope of a fibre optic
\nlink to enable transmission at digital bit-rates and at analogue
\nfrequencies higher than would be possible without these techniques.
\nEffectively, the cumulative zero-dispersion wavelength of the
\noptical path is moved from the 1 310 nm region to somewhere in the
\n1 550 nm region. A link of dispersion-unshifted B1 fibre and an
\nin-line dispersion compensator can be made to resemble, in some
\ncumulative respects, a link of dispersion-shifted B2 fibre.
\nExamples of passive dispersion compensating components include
\ndispersion-compensating fibre, fibre Bragg gratings, and
\netalons.<\/p>\n
Accommodation refers to techniques or components that utilize
\ndispersion to enable transmission at digital bit-rates and at
\nanalogue frequencies higher than would be possible without these
\ntechniques. Examples of active dispersion accommodation include
\noptical or electrical prechirping at the transmitter,
\ndispersion-assisted transmission, midspan spectral inversion, and
\nreceiver signal processing. Accommodation will be treated in future
\nrevisions of this technical report.<\/p>\n
Management referring to techniques that vary the dispersion
\ncoefficient along the optical path (both sign and magnitude)
\nremains under study.<\/p>\n","protected":false},"excerpt":{"rendered":"
TR 61282-5 – Fibre Optic Communication System Design Guides – Part 5: Accommodation and Compensation of Dispersion<\/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 2004<\/td>\n 32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":692634,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2646],"product_tag":[],"class_list":{"0":"post-692624","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\/692624","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\/692634"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=692624"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=692624"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=692624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}