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Investigation of temporal dynamics due to stimulated Brillouin scattering using statistical correlation in a narrow-linewidth cw high power fiber amplifier

Investigation of temporal dynamics due to stimulated Brillouin scattering using statistical correlation in a narrow-linewidth cw high power fiber amplifier
Investigation of temporal dynamics due to stimulated Brillouin scattering using statistical correlation in a narrow-linewidth cw high power fiber amplifier

We experimentally investigate the dynamics of backscattered light due to stimulated Brillouin scattering (SBS) in a narrow-linewidth continuous wave (CW) fiber amplifier. We observe the onset of sharp intensity variations in the backscattered radiation as we increase the pump power, which when analyzed using Karl-Pearson’s correlation coefficient reveals a distinct structure. We find that such structure is associated with the onset of stimulated Brillouin scattering (SBS) in the fiber amplifier. Moreover, at higher pump power levels we observe a periodic signature in the Karl-Pearson correlation trace that precedes an observation of kW pulses in the backscattered radiation. Based on controlled experiments, we conclude that the formation of the above kW pulses in our system is preceded by the onset of SBS.

1094-4087
33409-33417
Panbhiharwala, Yusuf
c223d826-5773-43d5-970a-e92332c83d78
Harish, Achar V.
833a8dce-cb98-479c-a78d-f754883ff2fd
Venkitesh, Deepa
f43bf0dc-32a4-469c-a928-e39b66469dea
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Srinivasan, Balaji
b04f794d-be0c-41d1-98e6-791458fb2eba
Panbhiharwala, Yusuf
c223d826-5773-43d5-970a-e92332c83d78
Harish, Achar V.
833a8dce-cb98-479c-a78d-f754883ff2fd
Venkitesh, Deepa
f43bf0dc-32a4-469c-a928-e39b66469dea
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Srinivasan, Balaji
b04f794d-be0c-41d1-98e6-791458fb2eba

Panbhiharwala, Yusuf, Harish, Achar V., Venkitesh, Deepa, Nilsson, Johan and Srinivasan, Balaji (2018) Investigation of temporal dynamics due to stimulated Brillouin scattering using statistical correlation in a narrow-linewidth cw high power fiber amplifier. Optics Express, 26 (25), 33409-33417. (doi:10.1364/OE.26.033409).

Record type: Article

Abstract

We experimentally investigate the dynamics of backscattered light due to stimulated Brillouin scattering (SBS) in a narrow-linewidth continuous wave (CW) fiber amplifier. We observe the onset of sharp intensity variations in the backscattered radiation as we increase the pump power, which when analyzed using Karl-Pearson’s correlation coefficient reveals a distinct structure. We find that such structure is associated with the onset of stimulated Brillouin scattering (SBS) in the fiber amplifier. Moreover, at higher pump power levels we observe a periodic signature in the Karl-Pearson correlation trace that precedes an observation of kW pulses in the backscattered radiation. Based on controlled experiments, we conclude that the formation of the above kW pulses in our system is preceded by the onset of SBS.

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More information

Accepted/In Press date: 10 October 2018
e-pub ahead of print date: 7 December 2018
Published date: 10 December 2018

Identifiers

Local EPrints ID: 428977
URI: http://eprints.soton.ac.uk/id/eprint/428977
ISSN: 1094-4087
PURE UUID: ade9bf4c-910f-4abb-9dba-31dd35100be4
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 15 Mar 2019 17:30
Last modified: 07 Oct 2020 01:42

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