We demonstrate the advantages of an optically gain-clamped S -band discrete Raman amplifier: low gain variation over a large input dynamic range, effective suppression of Raman transients, and amplifier instability in the strong-pump–weak-signal configuration. We further investigate experimentally the operating conditions necessary for effective gain clamping and demonstrate gain flattening over 30 nm of bandwidth. Thus a gain-clamped discrete Raman amplifier shows promise for practical deployment.
© 2004 Optical Society of America
Scott S.-H. Yam, Michel E. Marhic, Youichi Akasaka, and Leonid G. Kazovsky, "Gain-clamped S-band discrete Raman amplifier," Opt. Lett. 29, 757-759 (2004)