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Proceedings Paper

Effect of external phase modulation on suppression of stimulated Brillouin scattering in an optical transmission system using fiber lasers
Author(s): Han-Young Lee; Young-Tak Han; Je-Min Kim; Woo-Seok Yang; Sang Kyu Lim; Chul An; Hyung-Do Yoon
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Paper Abstract

Stimulated Brillouin Scattering, observed in an optical transmission system using fibre lasers as signal sources, was suppressed by external phase modulation. The threshold power of SBS in a single mode fibre with 8.3-micrometers diameter was as low as 2 dBm due to a narrow spectral linewidth of a fibre laser. At 20 MHz phase-modulation, modulation voltages above 5.3V suppressed the first order Stokes more than 25 dB. RF spectrums of the fibre laser phase-modulated at or above 5.3V showed multiple sets of sideband components higher than the carrier frequency component in amplitude. The minimum spectral bandwidth of a fibre laser with 20 kHz bandwidth was broadened to 120 MHz at this modulation condition. The results signified broadening of the effective spectral linewidth of the fibre laser by phase modulation.

Paper Details

Date Published: 19 October 2001
PDF: 5 pages
Proc. SPIE 4579, Optical Fiber and Planar Waveguide Technology, (19 October 2001); doi: 10.1117/12.444916
Show Author Affiliations
Han-Young Lee, Korea Electronics Technology Institute (South Korea)
Young-Tak Han, Korea Electronics Technology Institute (South Korea)
Je-Min Kim, Korea Electronics Technology Institute (South Korea)
Woo-Seok Yang, Korea Electronics Technology Institute (South Korea)
Sang Kyu Lim, Sogang Univ. (South Korea)
Chul An, Sogang Univ. (South Korea)
Hyung-Do Yoon, Korea Electronics Technology Institute (South Korea)


Published in SPIE Proceedings Vol. 4579:
Optical Fiber and Planar Waveguide Technology
Shuisheng Jian; Yanming Liu, Editor(s)

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