Beat Frequency Characterization and Stabilization for Short-Cavity DBR Fiber Grating Laser Based Sensor
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TL;DR: In this article, the authors proposed a self-injection method for short-cavity dual-polarization distributed Bragg reflector (DBR) fiber grating laser sensor in time and frequency domain.
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Abstract: In this paper, we propose our observation, analysis, and alleviation method of the beat frequency fluctuation in short-cavity dual-polarization distributed Bragg reflector (DBR) fiber grating laser sensor in time and frequency domain. According to our observation, beat frequency fluctuation varies from 8 to 800 kHz under different pump power. Research shows frequency domain beat signal linewidth broadening aggravates beat frequency fluctuation due to time domain irregular self-pulsation effect. By introducing self-injection into laser cavity as an auxiliary pump laser with a circulator, self-pulsation effect in DBR fiber laser sensor can be greatly suppressed, resulting in the compression of frequency domain beat signal linewidth as well as the stabilization of beat frequency fluctuation. Experimental results demonstrate that beat frequency fluctuation can be greatly reduced from 800 to 8 kHz within 1 h through self-injection, which is significant for high-accurate sensing.
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Citations
DBR Fiber Laser Based High-Resolution Accelerometer Network
Tao Liu,Jianwei Cheng,Dongdong Lv,Yiyang Luo,Zhijun Yan,Kai Wang,Chengqiang Li,Deming Liu,Qizhen Sun +8 more
TL;DR: In this paper, a high-resolution and precision acceleration sensor network with potential large sensing capacity, which is based on distributed Bragg reflector fiber lasers, is reported, which could benefit potential applications in smart unmanned platforms and seismic monitoring.
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Michelson interferometer composite cavity fiber laser sensor with radio frequency interrogation
Xu Wang,Enlai Wang,Fang Wang +2 more
TL;DR: In this article , a Michelson interferometer (MI) composite cavity fiber laser sensing system based on radio frequency (RF) interrogation is proposed and experimentally demonstrated, which improves the stability of the system.
References
•Book
Fiber Bragg gratings : fundamentals and applications in telecommunications and sensing
Andreas Othonos,Kyriacos Kalli +1 more
- 01 Jan 1999
1.3K
Characteristics of the distributed Bragg reflector fiber laser sensor for lateral force measurement
TL;DR: In this paper, the authors investigated the sensitivity of a distributed Bragg reflector fiber laser sensor for lateral force measurement, which operates in dual-polarization modes and converts the lateral force into a corresponding shift in the beat frequency generated by the fiber laser.
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Dual-Wavelength Single-Longitudinal-Mode Polarization-Maintaining Fiber Laser and Its Application in Microwave Generation
TL;DR: In this article, a pair of wavelength matched fiber Bragg gratings written directly in a polarization-maintaining erbium-doped fiber was used for generating high-frequency microwave signals.
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Highly sensitive bending sensor based on Er3+-doped DBR fiber laser.
TL;DR: A short cavity Er(3+)-doped distributed-Bragg-reflector (DBR) fiber laser with a low polarization beat frequency has been demonstrated for bending measurement and can greatly simplify the demodulation scheme and thus, allow the realization of low-cost but highly sensitive optical bending sensor systems.
Distributed bragg-reflector fiber-laser sensor for lateral force measurement
Yang Zhang,Bai-Ou Guan,Hwa-Yaw Tam +2 more
- 26 Dec 2007
TL;DR: In this paper, a lateral force sensor based on dual-polarization DBR fiber laser was demonstrated by measuring the polarization beat frequency in ratio-frequency domain, which showed high sensitivity and potential for multiplexing.
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