中国激光, 2014, 41 (s1): s105010, 网络出版: 2014-07-03
光纤布拉格光栅法布里珀罗腔对脉冲激光入射的响应
Response of Fiber Bragg Grating Fabry-Perot Cavity to Pulsed Laser Injection
光纤光学 光纤布拉格光栅 法布里珀罗腔 腔衰荡光谱 fiber optics fiber Bragg grating Fabry-Perot cavity cavity ring down spectrum
摘要
对光纤布拉格光栅法布里珀罗(FBG-FP)腔的衰荡特性进行了理论分析,导出了FBG-FP腔输出光场与入射脉冲激光光场之间关系的数学表达式,讨论了FBG-FP腔的反射率对其衰荡特性的影响。结果表明,FBG-FP腔对脉冲激光入射的响应包含振荡建立、饱和与衰荡三部分,当腔的功率反射率增加时,腔内稳定光强大幅增加,腔内光场的衰荡时间延长。最后,实验研究FBG-FP腔对脉冲激光入射的响应,所得结果与理论分析一致。
Abstract
Cavity ring-down (CRD) spectrum of fiber Bragg grating Fabry-Perot (FBG-FP) cavity is researched theoretically. The expression of output light intensity of FBG-FP cavity is derived, and the effect of the power reflectance of FBG-FP cavity on CRD spectrum is discussed. Numerical results show that the output performance of FBG-FP cavity includes three phases: build-up, stability and ring-down phase. The light intensity in the cavity and CRD time of cavity are proportional to the power reflectance of the FBG-FP cavity. Finally, the response of FBG-FP cavity to injected laser pulse is experimentally demonstrated. Experimental results are consistent with the theoretical analysis.
陈海燕, 陈聪, 陈礼林, 王蒙, 黎琦, 黄凯强. 光纤布拉格光栅法布里珀罗腔对脉冲激光入射的响应[J]. 中国激光, 2014, 41(s1): s105010. Chen Haiyan, Chen Cong, Chen Lilin, Wang Meng, Li Qi, Huang Kaiqiang. Response of Fiber Bragg Grating Fabry-Perot Cavity to Pulsed Laser Injection[J]. Chinese Journal of Lasers, 2014, 41(s1): s105010.