Chinese Optics Letters, 2020, 18 (7): 071202, Published Online: Jun. 12, 2020   

Multi-channel polarized low-coherence interference synchronous demodulation system based on a matrix charge-coupled device Download: 760次

Shuang Wang 1,2,3,*Jie Zhou 1,2,3Junfeng Jiang 1,2,3,**Kun Liu 1,2,3Qun Han 1,2,3Yanan Duan 1,2,3Rundong Wang 1,2,3Tiegen Liu 1,2,3
Author Affiliations
1 School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
2 Key Laboratory of Opto-electronics Information Technology, Ministry of Education, Tianjin 300072, China
3 Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin 300072, China
Abstract
A multi-channel synchronous demodulation system of a polarized low-coherence interferometer (PLCI) based on a matrix charge-coupled-device (CCD) is proposed and demonstrated. By using special designs, the system allows the signals from different channels to be received and demodulated synchronously. Multichannel air pressure experiments were implemented to verify the effectiveness of the proposed system. The experiment results showed that the Fabry–Perot (F–P) sensors could be demodulated synchronously with a high tolerance for light sources and sensors, which indicated that any sensor and light source that can be demodulated by PLCI were allowed to be employed, leading to a wide application in the field of multichannel synchronous measurement.

Shuang Wang, Jie Zhou, Junfeng Jiang, Kun Liu, Qun Han, Yanan Duan, Rundong Wang, Tiegen Liu. Multi-channel polarized low-coherence interference synchronous demodulation system based on a matrix charge-coupled device[J]. Chinese Optics Letters, 2020, 18(7): 071202.

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