基于损耗调制的可调谐掺铒光纤环形激光器波长范围移位，采用级联啁啾长周期光纤光栅进行温度测量

Loss-Modulation-Based Wavelength-Range Shifting of Tunable EDF Ring Laser with Cascaded-Chirped Long-Period Fiber Grating for Temperature Measurement.

作者信息

Fukushima Koken, Guterres Soares Manuel, Wada Atsushi, Tanaka Satoshi, Ito Fumihiko

机构信息

Department of Communications Engineering, National Defense Academy, 1-10-20 Hashirimizu, Kanagawa, Yokosuka 239-8686, Japan.

Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu-cho, Shimane, Matsue 690-8504, Japan.

出版信息

Sensors (Basel). 2021 Mar 27;21(7):2342. doi: 10.3390/s21072342.

DOI:10.3390/s21072342

PMID:33801722

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8036910/

Abstract

A novel tunable Erbium-doped fiber ring laser (EDFRL) with a cascaded-chirped long-period fiber grating (C-CLPG) as a wavelength selection filter is proposed from the viewpoint of the sensor use, in which a variable optical attenuator (VOA) is employed as an intracavity loss modulator to change the oscillation wavelength region so that the resultant tuning wavelength range is widened. In the demonstrative experiment for temperature measurements, oscillation over the wavelength range of 12.85 nm (1557.62~1570.47 nm), which is more than three times range of the previously presented laser and is equivalent to 64 °C in terms of temperature change, was achieved, while a single-wavelength oscillation was maintained. In addition, a practical technique for realizing a temperature measurement by combining with the VOA control is also discussed.

摘要

从传感器应用的角度出发，提出了一种新型的可调谐掺铒光纤环形激光器（EDFRL），该激光器采用级联啁啾长周期光纤光栅（C-CLPG）作为波长选择滤波器，其中使用可变光衰减器（VOA）作为腔内损耗调制器来改变振荡波长区域，从而拓宽了所得的调谐波长范围。在温度测量的演示实验中，实现了12.85 nm（1557.62~1570.47 nm）波长范围内的振荡，该范围是先前提出的激光器范围的三倍多，在温度变化方面相当于64°C，同时保持了单波长振荡。此外，还讨论了一种通过与VOA控制相结合来实现温度测量的实用技术。