Share Email Print
cover

Proceedings Paper

Dual-polarization DBR fiber laser sensor for liquid-level measurement
Author(s): Jianghai Wo; Jiejun Zhang; Qizhen Sun; Yi Dai; Xiaolei Li; Zhilin Xu; Perry Ping Shum; Deming Liu
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A dual-polarization distributed Bragg reflector (DBR) fiber grating laser for liquid level measurement is proposed and experimentally demonstrated. The laser cavity is used as the sensing device. The liquid level is obtained by measuring the beat frequency generated between the two lasing polarizaion modes. The result shows the beat frequency shifts linearly with the water level and a sensitivity of 241 kHz/mm has been obtained. The sensor is simple, easy to fabricate and with high sensitivity to liquid level variation, which could be very helpful in practical applications.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214G (17 October 2012); doi: 10.1117/12.974359
Show Author Affiliations
Jianghai Wo, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)
Jiejun Zhang, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)
Qizhen Sun, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)
Yi Dai, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)
Xiaolei Li, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)
Zhilin Xu, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)
Perry Ping Shum, Nanyang Technological Univ. (Singapore)
Deming Liu, Huazhong Univ. of Science and Technology (China)
National Engineering Lab. for Next Generation Internet Access System (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

© SPIE. Terms of Use
Back to Top