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Proceedings Paper

Analysis and optimization of wide-band flat-gain telluride-based fiber Raman amplifier
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Paper Abstract

The amplification mechanism of ultra-wide-band telluride-based fiber Raman amplifier (T-FRA) is analyzed by comparing the stimulated Raman scattering (SRS) characteristics of the telluride-based fiber with silica-based fibers. Then a multi-pumping scheme to get a gain-flattened FRA is presented. We calculate the pump power in designing multi-wavelength pumped Raman amplifiers by using some optimal searching method such as genic algorithm and an effective linear multi-steps method based on average power called Adams-Bashforth method is proposed which not only utilizes former multi-steps known information to get higher accuracy but also avoids iterative scatting by using forecasting-correcting policy The search time of genic algorithm is about 8 minutes and the calculation time is 2 to 3 minutes. The optimizing process of six pumps can be completed within 20minutes and the time may increase if we use 'shot' method. Furthermore, a complete computing model is established to optimize the pump wavelength and power allocation with flat net gain and broad bandwidth. As a result, using telluride-based fiber Raman amplifier, the gain over 10dB from 1500nm to 1620nm (C and L band) is obtained and the gain spectra is more flat especially in C band.

Paper Details

Date Published: 4 October 2006
PDF: 6 pages
Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 63512E (4 October 2006); doi: 10.1117/12.688595
Show Author Affiliations
Lin Wang, Beijing Jiaotong Univ. (China)
Fengping Yan, Beijing Jiaotong Univ. (China)
Taorong Gong, Beijing Jiaotong Univ. (China)
Yifan Li, Beijing Jiaotong Univ. (China)
Shuisheng Jian, Beijing Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 6351:
Passive Components and Fiber-based Devices III
Sang Bae Lee; Yan Sun; Kun Qiu; Simon C. Fleming; Ian H. White, Editor(s)

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