Title :
Reduced intermodulation distortion in 1300 nm gain-clamped MQW laser amplifiers
Author :
Tiemeijer, L.F. ; Thijs, P.J.A. ; Dongen, T.v. ; Binsma, J.J.M. ; Jansen, E.J. ; van Helleputte, H.R.J.R.
Author_Institution :
Philips Optoelectron. Centr, Eindhoven, Netherlands
fDate :
3/1/1995 12:00:00 AM
Abstract :
A 1300 nm gain-clamped DFB multiple quantum well laser amplifier with negligible pass band ripple, 20 dB fiber to fiber gain, and 10 dB reduction in gain saturation is demonstrated. The remaining gain saturation is attributed to longitudinal hole burning. After some modifications the reduction in gain saturation is improved to more than 30 dB for an input signal having the same polarization state as the lasing mode. From these experiments and a theoretical analysis it is concluded that there is a potential for realizing highly linear 1300 nm CATV semiconductor laser amplifiers using gain-clamping with less intermodulation distortion than today´s directly modulated linear semiconductor lasers.<>
Keywords :
cable television; distributed feedback lasers; infrared sources; intermodulation distortion; laser modes; optical communication equipment; optical fibre communication; optical fibre polarisation; optical hole burning; optical modulation; optical noise; optical saturation; quantum well lasers; 1300 nm; 20 dB; fiber to fiber gain; gain saturation; gain-clamped DFB multiple quantum well laser amplifier; gain-clamped MQW laser amplifiers; gain-clamping; highly linear 1300 nm CATV semiconductor laser amplifiers; input signal; lasing mode; negligible pass band ripple; polarization state; reduced intermodulation distortion; Fiber lasers; Gain; Intermodulation distortion; Laser modes; Laser noise; Laser theory; Optical fiber polarization; Quantum well devices; Quantum well lasers; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
