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Application of high concentration thulium-doped fiber for achieving S-band gain flattened hybrid optical amplifier

S. D. EMAMI1,* , P. HAJIREZA2, F. ABD-RAHMAN2, H. A. ABDUL-RASHID2, H. AHMAD3, S. W. HARUN1

Affiliation

  1. Department of Electrical Engineering, University of Malaya 50603 Kuala Lumpur, Malaysia.
  2. Faculty of Engineering, Multimedia University, 63100 Cyberjaya, Malaysia
  3. Photonics Research Center, University of Malaya 50603 Kuala Lumpur, Malaysia

Abstract

A hybrid amplifier is proposed using a series configuration of Thulium-doped fiber (TDF) and Raman amplifiers, which shares the same pump laser. This amplifier covers the bandwidth of entire short wavelength band (S-band) region by combining the gain spectrum of the TDF and Raman amplifiers. The new method of gain flattening is suggested by adding a second stage amplifier with a high concentration TDF as a gain medium. The flat gain is theoretically obtained at around 24dB. The development of reliable high-power diode lasers in the 1420 nm wavelength range will make this type of wideband hybrid amplifier an interesting candidate for S-band optical telecommunication systems..

Keywords

Thulium-doped fiber amplifier, S-band amplifier, Gain flattened, Raman amplifier.

Submitted at: June 19, 2010
Accepted at: July 14, 2010

Citation

S. D. EMAMI, P. HAJIREZA, F. ABD-RAHMAN, H. A. ABDUL-RASHID, H. AHMAD, S. W. HARUN, Application of high concentration thulium-doped fiber for achieving S-band gain flattened hybrid optical amplifier, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 7, pp. 1446-1451 (2010)