高环境适应性可调谐激光源

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关键词：光纤光学；可调谐激光源；模式匹配；无跳模;调谐范围；光频域反射中图分类号：TN248.1 文献标识码：Adoi：10.37188/OPE.20253323.3649 CSTR：32169.14.OPE.20253323.3649

Abstract：To meet the application requirements of tunable laser sources for optical frequency-domain reflectometry （OFDR），a wide-tuning-range，mode-hopping-free semiconductor tunable laser source with high environmental adaptability is designed. Based on the theory of synchronous variation of feedback light and cavity modes，the pivot point is calculated and analyzed to achieve optimal mode matching between the oscillating light in the internal cavity and the external cavity during the tuning process. Subsequently， the output characteristics of the tunable laser source，including wavelength stability and power fluctuation under various conditions such as high and low temperatures and mechanical vibration，are experimentally investigated. The results demonstrate that the tunable laser source operates stably over long durations within an ambient temperature range of to 40∘C and under conditions of drop and mechanical shock. Ata driving current of 400mA ，continuous，mode-hopping-free tuning from 1 499.999 8 nm to 1649.9996nm is achieved；the power fluctuation over the entire tuning range is better than 0.0331% ， the wavelength stability is better than 0.33pm over ，and the absolute wavelength accuracy is better than ±0.85pm . These performance metrics essentially meet the application requirements of high-precision optical link sensing OFDR systems.

Key words： fiber optics；tunable laser source； pattern matching；mode-hopping-free; tuning range;optical frequency domain reflection

1引言

宽可调谐范围、高光谱纯净度的可调谐激光源（TunableLaserSource，TLS）在光纤传感、环境监测以及相干通信等相关领域具有广泛的应用和巨大的市场需求[1-6]。（剩余12905字）