Stabilization of optical Fabry–Perot sensor by active feedback control of diode laser

Chen, Jianyong; Chen, Dijun; Geng, Jie; Li, Jun; Cai, Haiwen; Fang, Zujie

doi:10.1016/j.sna.2008.09.009

Cited by 23 publications

(15 citation statements)

References 20 publications

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“…However, this method has the disadvantages of a small dynamic range, it is difficult to control and stabilize the working point and it is very susceptible to fluctuations in light intensity. In order to overcome the shortcomings of the intensity demodulation algorithm, the operating point control technique [28,29], self-compensation method [30,31], quadrature phase method [32,33], and three-wavelength demodulation method [34] have been proposed, and so on.…”

Section: Phase Demodulationmentioning

confidence: 99%

Reviews on Corrugated Diaphragms in Miniature Fiber-Optic Pressure Sensors

Dai

Zheng

et al. 2019

Applied Sciences

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Corrugated diaphragms (CDs) have been widely used in many fields because of their higher pressure sensitivity and wider linear range compared to flat diaphragms (FDs) in the same circumstances. Especially in the application of miniature fiber-optic pressure sensors, the introduction of the corrugated structure gives the sensor high sensitivity, large dynamic range, good linearity, small hysteresis, good stability, and so on. Research on CD-based miniature fiber-optic pressure sensors has gradually attracted more attention in recent years. In this paper, the principles of operation of a miniature fiber-optic pressure sensor are briefly introduced, then the mechanical properties of FD and CD, as well as their influences on the performance of the sensor, are analyzed in detail. The application status of CDs in miniature fiber-optic pressure sensors is reviewed, and our conclusions and the prospects for the application of CDs in miniature fiber-optic pressure sensors are given finally.

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Section: Phase Demodulationmentioning

confidence: 99%

Reviews on Corrugated Diaphragms in Miniature Fiber-Optic Pressure Sensors

Dai

Zheng

et al. 2019

Applied Sciences

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“…It is obvious that the system is concise and tight. The principle of the acoustic sensor has been described in other papers [ 24 , 25 , 26 ].…”

Section: Acoustic Sensormentioning

confidence: 99%

“…The FFPC acoustic sensor also could detect low-frequency acoustic waves, while the optical microphone with feedback system [ 25 ] could not be detect quite low-frequency acoustic waves (less than 5 Hz) because the low-frequency signal would be judged as environmental changes and would be filtered.…”

Section: Acoustic Sensormentioning

confidence: 99%

“…Second, sensors have been proposed that have a feedback circuit to compensate the change of the cavity length by tuning the working wavelength of the light. For example, Chen et al proposed a stabilization method with active feedback control of the diode laser to prevent drifting of the quadrature point [ 25 ]. Wang et al proposed a feedback stabilization technique to control the output wavelength of the tunable fiber laser to operate in the linear range [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

“…Vetrov et al reported a method for signal reconstruction that used two channels with different wavelengths with the phase shift of the signals in these channels being π/2 [ 29 ]. Apparently, most of these proposals have some drawbacks, such as the high cost of the tunable laser and dual-wavelength source, a complicated system of dual-cavity structure and orthogonal signal demodulation, and insensitivity to low-frequency sound waves for the feedback system [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fabry–Perot Cavity Sensing Probe with High Thermal Stability for an Acoustic Sensor by Structure Compensation

Cheng

Zhou

Zou

2018

Sensors

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Fiber Fabry–Perot cavity sensing probes with high thermal stability for dynamic signal detection which are based on a new method of structure compensation by a proposed thermal expansion model, are presented here. The model reveals that the change of static cavity length with temperature only depends on the thermal expansion coefficient of the materials and the structure parameters. So, fiber Fabry–Perot cavity sensing probes with inherent temperature insensitivity can be obtained by structure compensation. To verify the method, detailed experiments were carried out. The experimental results reveal that the static cavity length of the fiber Fabry–Perot cavity sensing probe with structure compensation hardly changes in the temperature range of −20 to 60 °C and that the method is highly reproducible. Such a method provides a simple approach that allows the as-fabricated fiber Fabry–Perot cavity acoustic sensor to be used for practical applications, exhibiting the great advantages of its simple architecture and high reliability.

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