Stimulated Raman scattering in a multimode optical fiber with bend-induced loss

Sharma, Anup; Dokhanian, Mostafa; Wu, Zhixian; Posey, R.; Williams, A. C.; Venkateswarlu, Putcha

doi:10.1016/0030-4018(94)90151-1

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…If the LP 01,11,21,02 modes had been simulated together it would become apparent that only the LP 02 mode would be excited while the others would get only negligible amount of power transferred to them. These results are in good agreement with previous studies of Raman scattering in multimode silica fibres where the Raman scattering occurred in the concentric LP 0n modes under optimum launch conditions where the laser light was predominately coupled into the LP 01 mode [38][39][40].…”

Section: Supercontinuum Generation In the Lp 01112102 Modessupporting

confidence: 92%

“…Introduction of additional modes into the modeling depleted the pump pulse further of power as Raman scattering transferred power between the modes. The effect was strongest between the concentric modes due to their comparable fibre geometries, and this was in good agreement with previous experimental studies of intermodal Raman scattering in silica fibres [38][39][40]. A 2.2-5μm continuum was formed in the LP 02 mode from the first LP 02 Raman line at 3.1um generated by the pump at 2.9μm, which was close to the anomalous dispersion regime of the mode.…”

supporting

confidence: 91%

“…Furthermore, in multimode fibres power can be lost to higher order mode (HOM) during in-coupling [35][36][37], or coupling between fibre modes due to nonlinear effects along the fibre. The nonlinear coupling can either be through intermodal Raman scattering [38][39][40] or through four wave mixing (FMW) between modes [18,41].…”

Section: Introductionmentioning

confidence: 99%

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Multimode supercontinuum generation in chalcogenide glass fibres

Kubat¹,

Bang²

2016

Opt. Express

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Mid-infrared supercontinuum generation is considered in chalcogenide fibres when taking into account both polarisations and the necessary higher order modes. In particular we focus on high pulse energy supercontinuum generation with long pump pulses. The modeling indicates that when only a single polarisation in the fundamental mode is considered the obtainable supercontinuum bandwidth is substantially exaggerated compared to when both polarisations are taken into account. Our modeling shows that if the pump pulse is short enough (≤ 10 ps) then higher order modes are not important because of temporal walk-off. In contrast long pump pulses (≥ 40 ps) will efficiently excite higher order modes through Raman scattering, which will deplete the fundamental mode of energy and limit the possibility of obtaining a broadband supercontinuum.

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Section: Supercontinuum Generation In the Lp 01112102 Modessupporting

confidence: 92%

supporting

confidence: 91%