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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 12356–12361

Fiber-bragg-grating-based dispersion-compensated and gain-flattened raman fiber amplifier

Shien-Kuei Liaw, Liang Dou, and Anshi Xu  »View Author Affiliations

Optics Express, Vol. 15, Issue 19, pp. 12356-12361 (2007)

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In this paper, we propose a novel signal/pump double-pass Raman fiber amplifier using fiber Brag gratings (FBGs). In order to compensate the dispersion slop mismatch among channels in lightwave system, FBGs embedded in different positions along dispersion compensated fiber are used to control the travel length of each WDM signal. Gain equalization can be achieved by optimizing the reflectivity of each FBG. Maximum output power variation among channels is less than ±0.5 dB after appropriate optimization. Finally, a wavelength division multiplexing (WDM) system using 40-Gb/s x 8 ch non return-to-zero (NRZ) signal transmission in a 100-km transmission fiber is simulated to confirm the system performance. Using proposed dispersion compensation method, it may lead to 2 dB improvement in Q value. Such kind of RFA may find vast applications in WDM system where dispersion management is a crucial issue.

© 2007 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 25, 2007
Revised Manuscript: September 4, 2007
Manuscript Accepted: September 4, 2007
Published: September 13, 2007

Shien-Kuei Liaw, Liang Dou, and Anshi Xu, "Fiber-bragg-grating-based dispersion-compensated and gain-flattened raman fiber Amplifier," Opt. Express 15, 12356-12361 (2007)

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