Fiber-optic extrinsic Fabry-Perot interferometer sensors with three-wavelength digital phase demodulation

被引：0
|
作者：
Schmidt, M [1 ]
Fürstenau, N [1 ]
机构：
[1] German Aerosp Ctr DLR, Inst Flight Guidance, D-38022 Braunschweig, Germany
来源：
OFS-13: 13TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS & WORKSHOP ON DEVICE AND SYSTEM TECHNOLOGY TOWARD FUTURE OPTICAL FIBER COMMUNICATION AND SENSING | 1999年 / 3746卷
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D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A superluminescent diode based three-wavelength passive quadrature phase demodulation scheme which uses microcontroller based real time arctan - calculation has been developed for readout of fiber-optic EFPI - vibration, acoustic and strain sensors. Quasistatic strain and dynamic vibration sensing with up to 80 kHz sampling rate is demonstrated Nonlinearities in the %-range by dephasing of the nominally pi/2 phase shifted interference signals with increasing fringe number is corrected for with a suitable algorithm resulting in significant improvement of the phase - strain characteristic.
引用
收藏
页码：410 / 413
页数：4
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