ファイバブラッググレーティングを外部分布反射器に用いた歪多重量子井戸レーザーの注入電流と光出力の特性
1999 年 27 巻 2 号 p. 121-126
詳細
1999 年 27 巻 2 号 p. 121-126
For the first time, the effects of coupling efficiency and Fiber Bragg Grating (FBG) reflectivity to characteristicsbetween injection current and optical power of Strained-Layer Multiple Quantum Well (SL MQW) semiconductor lasers coupled to an externally distributed FBG reflector are demonstrated. In this paper, wedescribe the experimental and simulated results. Our simulations show good agreement with experimentalmeasurements. This kind of laser is investigated and demonstrated, since the lasing wavelengthcan bespecified by choosing Bragg wavelength of FBGs and also be stabilized. At present, 980 nm pumplasers usinga distributed FBG reflector are deployed to enhance stability of Erbium Doped Fiber Amplifiers (EDFAs).Furthermore, the potential for use in Wavelength Division Multiplexing (WDM) transmitters is investigated.This result is useful to design characteristics between injection current and optical power for such lasers. Weconclude that the optimum FBG reflectivity is 0.2 on our experimental configuration where couplingefficiency is 0.6.
