Low-Threshold Cascaded Raman Scattering and Intermodal Four-Wave Mixing in Cascaded Multimode Fiber System

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dc.contributor.authorRehan M.
dc.contributor.authorChowdhury R.
dc.contributor.authorBiswas P.
dc.contributor.authorKang M.S.
dc.contributor.authorVarshney S.K.
dc.date.accessioned2024-08-01T06:18:28Z
dc.date.available2024-08-01T06:18:28Z
dc.date.issued2024
dc.description.abstract© 1983-2012 IEEE.Generation of a broadband spectrum through various nonlinear effects, such as Raman scattering and intermodal four-wave mixing (IMFWM) in multimode fibers (MMFs), has emerged as a suitable cost-effective alternative to the existing highly nonlinear photonic crystal fiber-based systems. However, the application of such standard telecom-grade MMFs for continuum generation is limited by the large amount of power required to trigger and maintain the effect of such nonlinearities in them. Here, we experimentally demonstrate an all-fiber-based cascaded system comprising a standard multimode graded-index (GRIN) fiber and a few-mode non-zero dispersion-shifted (NZDS) fiber, which effectively reduces the Raman threshold. The proposed cascaded fiber system is pumped by a passively Q-switched 770 ps Nd:YAG laser operating at 1064 nm, utilizing the normal dispersion regime of both fibers. Cascaded Raman scattering up to the fourth order and IMFWM processes were observed at a comparatively low average input pump power of 6 mW (corresponding peak power of ∼ 339 W), making our system more efficient than the previous findings. The experimental observations are also verified with the theoretical estimations of the IMFWM-generated sidebands. Such a cascaded fiber system is highly suitable for low-power broadband tunable light sources in the telecom band.
dc.description.firstpage4636
dc.description.issuenumber13
dc.description.lastpage4642
dc.description.volume42
dc.identifier.doi10.1109/JLT.2024.3369933
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/39059
dc.relation.ispartofJournal of Lightwave Technology
dc.rightsAcesso Restrito
dc.subject.otherlanguageCascaded raman scattering
dc.subject.otherlanguagedispersion-shifted fiber
dc.subject.otherlanguagegraded-index fiber
dc.subject.otherlanguageintermodal four-wave mixing
dc.titleLow-Threshold Cascaded Raman Scattering and Intermodal Four-Wave Mixing in Cascaded Multimode Fiber System
dc.typeArtigo
local.scopus.citations2
local.scopus.eid2-s2.0-85187007889
local.scopus.subjectCascaded Raman scattering
local.scopus.subjectDispersion shifted fibers
local.scopus.subjectFiber nonlinear optics
local.scopus.subjectFiber systems
local.scopus.subjectFour-wave-mixing
local.scopus.subjectGraded-index fibres
local.scopus.subjectIntermodal four-wave mixing
local.scopus.subjectOptical fiber devices
local.scopus.subjectOptical fiber dispersion
local.scopus.subjectOptical fiber polarization
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85187007889&origin=inward
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