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Proceedings Paper

Enhancement of Brillouin signal in plastic optical fibers using pulsed pump with multimode-fiber-assisted coupling
Author(s): Yosuke Mizuno; Neisei Hayashi; Kentaro Nakamura
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Paper 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.

Paper Details

Date Published: 20 May 2013
PDF: 4 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87942I (20 May 2013); doi: 10.1117/12.2023242
Show Author Affiliations
Yosuke Mizuno, Tokyo Institute of Technology (Japan)
Neisei Hayashi, Tokyo Institute of Technology (Japan)
Kentaro Nakamura, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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