School of Electrical and Information Engineering, Yunnan Minzu University, Kunming 650500, China.
National Key Laboratory of Tunable Laser Technology, Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150080, China.
Sensors (Basel). 2022 Mar 31;22(7):2694. doi: 10.3390/s22072694.
For decades, optical fiber interferometers have been extensively studied and applied for their inherent advantages. With the rapid development of science and technology, fiber sensors with higher detection sensitivity are needed on many occasions. As an effective way to improve measurement sensitivity, Vernier effect fiber sensors have drawn great attention during the last decade. Similar to the Vernier caliper, the optical Vernier effect uses one interferometer as a fixed part of the Vernier scale and the other as a sliding part of the Vernier scale. This paper first illustrates the principle of the optical Vernier effect, then different configurations used to produce the Vernier effect are classified and discussed. Finally, the outlook for Vernier effect fiber sensors is presented.
几十年来，光纤干涉仪因其固有优势而得到了广泛的研究和应用。随着科学技术的飞速发展，许多场合都需要具有更高检测灵敏度的光纤传感器。作为提高测量灵敏度的有效方法，游标效应光纤传感器在过去十年中引起了极大的关注。与游标卡尺类似，光学游标效应将一个干涉仪用作游标刻度的固定部分，另一个干涉仪用作游标刻度的滑动部分。本文首先说明了光学游标效应的原理，然后对产生游标效应的不同结构进行了分类和讨论。最后，展望了游标效应光纤传感器的前景。
