论文部分内容阅读
根据双光纤Bragg光栅(FBG)外腔半导体激光器相干失效的物理过程,运用速率方程和双FBG耦合模理论,分析了双FBG外腔半导体激光器相干失效产生和控制的条件,提出了实现和控制双FBG外腔半导体激光器相干失效多模稳定工作的方法.双FBG外腔半导体激光器在相干失效下具有多模的稳定工作状态,相干失效长度缩短,相干失效长度内光谱稳定.实验测量结果表明,外腔反射率为3%时,从非相干失效状态到相干失效状态,半峰值全宽度从0.5 nm突然展宽到0.9 nm.在相干失效状态下,功率稳定,边模抑制比大于45 dB,在0℃~C一70℃工作温度范围内峰值波长漂移小于0.5 nm,最小相干失效长度小于0.5 m.双FBG外腔半导体激光器相干失效的应用对提高光纤放大器和光纤激光器的性能具有重要意义.
According to the physical process of double-fiber Bragg grating (FBG) external cavity semiconductor laser coherent failure, the conditions of dual-FBG external cavity semiconductor laser coherent failure were analyzed by using the rate equation and double FBG coupled mode theory. The realization and control of double FBG external cavity semiconductor laser coherent failure multi-mode stability of the work. Dual FBG external cavity semiconductor lasers in the coherent failure with multi-mode stable working condition, the coherence failure length is shortened, coherence failure length of the spectrum stable .Experimental measurement results show that outside When the cavity reflectivity is 3%, the full width at half maximum (FWHM) broadens from 0.5 nm to 0.9 nm from the incoherent failure state to the coherent failure state. Under the coherent failure state, the power is stable and the side mode suppression ratio is more than 45 dB. The peak wavelength shift is less than 0.5 nm and the minimum coherence failure length is less than 0.5 m in the operating temperature range of ℃ ~ C to 70 ℃. The application of double FBG external cavity semiconductor lasers to coherent failure is of great significance to improve the performance of fiber amplifiers and fiber lasers.