NDLI: Highly Sensitive Hydrostatic Pressure Sensing With an Embedded Dual-Polarization Fiber Grating Laser

Content Provider	IEEE Xplore Digital Library
Author	Long Jin Zhan Quan Yan-Nan Tan Bai-Ou Guan
Copyright Year	1989
Abstract	In this letter, we propose and demonstrate a highly sensitive hydrostatic-pressure sensor based on a dual-polarization fiber grating laser. The sensor is fabricated by embedding such a laser into a polymer with a steel rod. Due to the significant difference in elastic property, a nonuniform stress field over the package is induced by the applied pressure and an additional intracavity birefringence is produced. The amplitude of the pressure can be measured by monitoring the beat frequency between the orthogonal polarization modes. The sensitivity reaches 0.217 GHz/MPa, 108.5 times higher than that of a bare fiber grating laser. Considering the fluctuation of the beat frequency of 0.3 MHz, the resolution of the sensor is about 1.4 kPa, within the range of 0-13 MPa.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1060
Ending Page	1062
Page Count	3
File Size	410362
File Format	PDF
ISSN	10411135
Volume Number	24
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fiber sensors Fiber lasers Sensitivity Optical fiber polarization Measurement by laser beam Fiber gratings Polymers hydrostatic pressure sensing Fiber grating laser sensors fiber optic sensors
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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