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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 2, Iss. 4 — Apr. 10, 2004
  • pp: 196–199

A novel control method for on-off gain and gain tilt of fiber Raman amplifiers

Xue Feng, Wei Zhang, Xiaoming Liu, and Jiangde Peng  »View Author Affiliations


Chinese Optics Letters, Vol. 2, Issue 4, pp. 196-199 (2004)


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Abstract

Considering spectrum tilt due to signal-to-signal Raman scattering (SSRS) in backward distributed fiber Raman amplifiers (B-DFRA), an inverse tilted on-off gain profile is adopted to achieve flat net gain. A simple approximate linear relationship of pump power at each wavelength versus on-off gain level and tilt was derived numerically and experimentally so that a novel control method was established. Since there are only 3 pre-determinable constants required for individual pump wave, it is easy to be realized. As an example, maximum errors less than 0.2 and 0.4 dB respectively for average gain and gain tilt were achieved over C+L band in 100-km back-pumped standard single-mode fiber (SMF) experimentally.

© 2005 Chinese Optics Letters

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

Citation
Xue Feng, Wei Zhang, Xiaoming Liu, and Jiangde Peng, "A novel control method for on-off gain and gain tilt of fiber Raman amplifiers," Chin. Opt. Lett. 2, 196-199 (2004)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-2-4-196

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