Title :
Gain equalization of EDFA´s with Bragg gratings
Author :
Rochette, M. ; Guy, M. ; LaRochelle, S. ; Lauzon, J. ; Trépanier, F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Laval Univ., Que., Canada
fDate :
5/1/1999 12:00:00 AM
Abstract :
Flat-gain amplifiers are needed to ensure proper amplification of every channel in wavelength-division-multiplexed communication systems. Such amplifiers can be realized by combining a precisely tailored filter with an erbium-doped fiber amplifier (EDFA). In this letter, we show that Bragg gratings can lead to accurate EDFA gain equalization. Reflection and transmission gratings have been used to demonstrate gain equalization over 32 nm with excursion inferior to /spl plusmn/0.1 and /spl plusmn/0.3 dB, respectively. A maximum 0.04-dB noise-figure penalty results from this process. By extension, Bragg gratings could also equalize the gain of any arbitrary gain profile, over any arbitrary bandwidth.
Keywords :
Bragg gratings; equalisers; erbium; laser noise; optical fibre amplifiers; optical fibre communication; wavelength division multiplexing; Bragg gratings; EDFA; EDFA gain equalization; arbitrary bandwidth; arbitrary gain profile; erbium-doped fiber amplifier; gain equalization; noise-figure penalty; precisely tailored filter; reflection gratings; transmission gratings; wavelength-division-multiplexed communication systems; Acoustic reflection; Bandwidth; Bragg gratings; Erbium-doped fiber amplifier; Optical amplifiers; Optical filters; Optical noise; Optical reflection; Optical saturation; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
