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dc.contributor.authorTan, Mingming
dc.date.accessioned2021-06-02T10:10:57Z
dc.date.available2021-06-02T10:10:57Z
dc.date.issued2018
dc.identifierONIX_20210602_10.5772/intechopen.73632_381
dc.identifier.urihttps://library.oapen.org/handle/20.500.12657/49267
dc.description.abstractThe chapter demonstrates a detailed study of Raman fiber laser (RFL)-based amplification techniques and their applications in long-haul/unrepeatered coherent transmission systems. RFL-based amplification techniques are investigated from signal/noise power distributions, relative intensity noise (RIN), and fiber laser mode structures. RFL-based amplification techniques can be divided into two categories according to the fiber laser generation mechanism: cavity Raman fiber laser with two fiber Bragg gratings (FBGs) and random distributed feedback (DFB) Raman fiber laser using one FBG. In addition, in cavity fiber laser–based amplification, reducing the reflectivity near the input helps mitigate the signal RIN, thanks to the reduced efficiency of the Stokes shift from the second-order pump. To evaluate the transmission performance, different RFL-based amplifiers were optimized in long-haul coherent transmission systems. Cavity fiber laser–based amplifier introduces >4.15 dB Q factor penalty, because the signal RIN is transferred from the second-order pump. However, random DFB fiber laser–based amplifier prevents the RIN transfer and therefore enables bidirectional second-order pumping, which gives the longest transmission distance up to 7915 km. In addition, using random DFB laser-based amplification achieves the distance of >350 km single mode fiber in unrepeatered DP-QPSK transmission.
dc.languageEnglish
dc.subject.classificationbic Book Industry Communication::P Mathematics & science::PH Physics::PHJ Optical physics::PHJL Laser physics
dc.subject.otherRaman amplification, Raman fiber laser, coherent transmission, random fiber laser, cavity fiber laser
dc.titleChapter Raman Fiber Laser–Based Amplification in Telecommunications
dc.typechapter
oapen.identifier.doi10.5772/intechopen.73632
oapen.relation.isPublishedBy09f6769d-48ed-467d-b150-4cf2680656a1
oapen.relation.isFundedByf1209042-b1d5-45a6-82b3-225d50f736ca
oapen.grant.number748767
oapen.grant.number608099
oapen.grant.acronymSIMFREE
oapen.grant.acronymICONE


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