Polymer waveguide integrated-optic current transducers

Various functional optical devices are integrated on a single chip in order to construct optical current transducers based on polarization rotated reflection interferometry, which consists of polarization maintaining 3-dB couplers, TE-pass polarizers, TE/TM polarization converters, and thermo-optic...

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Bibliographic Details
Published in:Optics express 2011-05, Vol.19 (10), p.9392-9400
Main Authors: Oh, Min-Cheol, Chu, Woo-Sung, Kim, Kyung-Jo, Kim, Jun-Whee
Format: Article
Language:English
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Summary:Various functional optical devices are integrated on a single chip in order to construct optical current transducers based on polarization rotated reflection interferometry, which consists of polarization maintaining 3-dB couplers, TE-pass polarizers, TE/TM polarization converters, and thermo-optic phase modulators. By virtue of the device integration, the sensor exhibited good linearity, and excellent accuracy with an error less than 0.2%. The integrated-optic device provides inherent polarization maintaining characteristics and precise controllability of the optical path length in the interferometric sensor. Single chip integration reduces the complexity of the interferometry, and enables mass-production of low-cost high performance current sensors.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.009392