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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 22, Iss. 10 — Oct. 1, 2004
  • pp: 2279–

Novel Fiber Design for Flat Gain Raman Amplification Using Single Pump and Dispersion Compensation in S Band

K. Thyagarajan and Charu Kakkar

Journal of Lightwave Technology, Vol. 22, Issue 10, pp. 2279- (2004)


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Abstract

This paper reports on a novel fiber design that has an inherently flattened effective Raman gain spectrum. Simulations show that gain-flattened broad-band Raman amplification, using a single pump, can be achieved in any wavelength band by suitably choosing the fiber parameters and the pump wavelength. The fiber also has a high negative dispersion coefficient - (380-515) ps/km·nm over the operating range of wavelengths - and the shape of the dispersion curve is such that the total link dispersion can be not only compensated but also flattened. Hence, the designed fiber can serve as a lossless, broad-band, dispersion-flattening, and dispersion-compensating module for the S band, wherein lossless operation is achieved using inherently gain-flattened single-pump Raman amplification. The performance characteristics of such a module was modeled taking into account wavelength-dependent splice loss as well as background loss, and it has been shown through simulations that lossless operation with ± 0.2-dB gain ripple is achievable over (1480-1511) nm using a single pump. Moreover, dispersion compensation for five spans of transmission in a 10-Gb/s system, over this 32-nm bandwidth in the S band, should be attainable using the proposed design.

© 2004 IEEE

Citation
K. Thyagarajan and Charu Kakkar, "Novel Fiber Design for Flat Gain Raman Amplification Using Single Pump and Dispersion Compensation in S Band," J. Lightwave Technol. 22, 2279- (2004)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-22-10-2279

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