Enhancement of Brillouin signal in plastic optical fibers using pulsed pump with multimode-fiber-assisted coupling

Yosuke Mizuno; Neisei Hayashi; Kentaro Nakamura

doi:10.1117/12.2023242

20 May 2013 Enhancement of Brillouin signal in plastic optical fibers using pulsed pump with multimode-fiber-assisted coupling

Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura

Author Affiliations +

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87942I (2013) https://doi.org/10.1117/12.2023242
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

A cost-effective technique for coupling a plastic optical fiber (POF) to a silica single-mode fiber (SMF) is proposed, which can, by exploiting a multimode fiber (MMF), avoid the damage or burning at the butt-coupled POF/SMF interface. Using this coupling technique, we also show that the Brillouin Stokes power in a POF can be enhanced by combined use of pulsed pump and an erbium-doped fiber amplifier. When the pulsed pump with average optical power of 18 dBm, duty ratio of 15%, and pulse period of 2 μs is launched into a 200-m-long POF, 4-dB enhancement of the Stokes power is obtained compared to that with 18-dBm continuous-wave pump. The relatively small enhancement is probably caused by the high Brillouin threshold of POFs. The Stokes power dependence on duty ratio is non-monotonic, which might originate from a longer phonon lifetime in POFs than that in silica SMFs.

Citation Download Citation

Yosuke Mizuno, Neisei Hayashi, and Kentaro Nakamura "Enhancement of Brillouin signal in plastic optical fibers using pulsed pump with multimode-fiber-assisted coupling", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87942I (20 May 2013); https://doi.org/10.1117/12.2023242

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