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Title: In-fiber polarimeters based on hollow-core photonic bandgap fibers
Authors: Xuan, Haifeng
Jin, Wei
Zhang, M.
Ju, Jian
Liao, Y. B.
Subjects: Energy gap
Fiber Bragg gratings
Fiber optic components
Fiber optic sensors
Optical fiber fabrication
Spontaneous emission
Torsional stress
Issue Date: 20-Jul-2009
Publisher: Optical Society of America
Source: Optics express, 20 July 2009, v. 17, no. 15, p. 13246-13254.
Abstract: In-fiber polarimeters or polarization mode interferometers (PMIs) are fabricated by cascading two CO2-laser-induced in-fiber polarizers along a piece of hollow-core photonic bandgap fiber. Since the two interfering beams are the orthogonal polarizations of the fundamental mode, which are tightly confined to the core and have much lower loss than higher order modes, the PMIs can have either short (e.g., a few millimeters) or long (tens of meters or longer) device length without significantly changing the fringe contrast and hence provide design flexibility for applications required different device lengths. As examples of potential applications, the PMIs have been experimentally demonstrated for wavelength-dependent group birefringence measurement; and for strain, temperature and torsion sensors. The PMI sensors are quite sensitive to strain but relatively insensitive to temperature as compared with fiber Bragg grating sensors. The PMIs function as good directional torsion sensors that can determine the rate and direction of twist at the same time.
Rights: © 2009 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Type: Journal/Magazine Article
DOI: 10.1364/OE.17.013246
ISSN: 1094-4087
Appears in Collections:EE Journal/Magazine Articles

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