Title :
All optical gain-clamping in erbium-doped fiber amplifier using stimulated Brillouin scattering
Author :
Lee, Seung Hee ; Kim, Seong Ha
Author_Institution :
Digital Commmun. Lab., Samsung Adv. Inst. of Technol., Kyungki, South Korea
Abstract :
A novel structure of gain clamping in an erbium doped fiber amplifier (EDFA) is demonstrated. Stimulated Brillouin scattering (SBS) from a dispersion compensating fiber module is used as feedback to clamp the gain of the conventional two-stage EDFA. A counter propagating continuous-wave probe beam at 1559 nm operating effectively at -9.5 dBm is used as the SBS pump source. For a dynamic range of 10 dB per channel, gain variation is kept below 1 dB for a single surviving channel in an eight-channel wavelength-division multiplexer.
Keywords :
erbium; fibre lasers; laser feedback; optical communication equipment; optical fibre dispersion; stimulated Brillouin scattering; wavelength division multiplexing; 1559 nm; Er-doped fiber amplifier; SBS pump source; WDM networks; all-optical gain-clamping; continuous-wave probe beam; counter propagating CW probe beam; dispersion compensating fiber module; eight-channel wavelength-division multiplexer; stimulated Brillouin scattering; two-stage EDFA; Brillouin scattering; Clamps; Doped fiber amplifiers; Erbium; Erbium-doped fiber amplifier; Fiber nonlinear optics; Optical feedback; Optical pumping; Optical scattering; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
