Photonic Sensors, Volume. 13, Issue 2, 230204(2023)
High Sensitivity Temperature Sensor Based on Harmonic Vernier Effect
A high-sensitivity temperature sensor based on the harmonic Vernier effect is proposed and verified by experiments. The main component of the sensor is a Sagnac interferometer consisting of two sections of polarization maintaining fibers (PMFs) spliced with an intersection angle of 45° between their fast axes. The harmonic Vernier effect is achieved by setting the length of one of the PMFs an integral multiple (i-times) of the length of the other plus a detuning factor. Compared with the Sagnac interferometer based on the fundamental Vernier effect, the temperature sensitivity of the harmonic Vernier effect is higher, reaching i+1 times of that of the fundamental Vernier effect (i is the order of the harmonic).
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Meifang HE, Beibei ZHU, Zuxing ZHANG. High Sensitivity Temperature Sensor Based on Harmonic Vernier Effect[J]. Photonic Sensors, 2023, 13(2): 230204
Category: Regular
Received: Jul. 22, 2022
Accepted: Dec. 2, 2022
Published Online: Mar. 21, 2024
The Author Email: ZHANG Zuxing (zxzhang@njupt.edu.cn)