Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29054
Title: Polarimetric heterodyning fiber grating laser sensors
Authors: Guan, BO
Zhang, Y
Tan, YN
Guo, T
Tam, HY 
Keywords: Fiber Bragg grating
Fiber grating laser
Fiber optic sensor
Polarimetric sensor
Sensor multiplexing
Issue Date: 2011
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2011, v. 8034, 80340G How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
Abstract: Fiber grating laser sensors have been attracting interest because of their high signal-to-noise ratio and narrow linewidth that permit high resolution sensing. According to the working principle, fiber grating laser sensors can be classified into two types: wavelength encoding sensor and polarimetric heterodyning sensor. The former converts measurrand into shift in the operation wavelength of the fiber laser, which is similar to that of fiber grating sensor. The latter converts measurrant into change in beat frequency between the two orthogonal polarization modes from the laser. Because the beat frequency is in radio frequency (RF) range, the polarimetric heterodyning sensor has distinctive advantages of ease of interrogation and avoidance of expensive wavelength measurement that is required for wavelength encoding sensors. In this paper, we report some of our recent works in fabrication of dual-polarization fiber grating lasers, development of polarimetric heterodyning fiber grating laser sensors for measurement of acoustic wave, acceleration, lateral force, displacement, electric current and hydrostatic pressure, and sensor multiplexing in RF domain.
Description: Photonic Microdevices/Microstructures for Sensing III, Orlando, FL, 27-28 April 2011
URI: http://hdl.handle.net/10397/29054
ISBN: 9780819486080
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.883785
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