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http://dx.doi.org/10.3807/KJOP.2010.21.4.168

Optical Current Sensors Based on Polarization Rotated Reflection Interferometry  

Jang, Ji-Hyang (School of Electrical Engineering, Pusan National University)
Chu, Woo-Sung (School of Electrical Engineering, Pusan National University)
Kim, Hoon (School of Electrical Engineering, Pusan National University)
Seo, Jun-Kyu (School of Electrical Engineering, Pusan National University)
Kim, Kyung-Jo (School of Electrical Engineering, Pusan National University)
Kim, Jun-Whee (School of Electrical Engineering, Pusan National University)
Oh, Min-Cheol (School of Electrical Engineering, Pusan National University)
Publication Information
Korean Journal of Optics and Photonics / v.21, no.4, 2010 , pp. 168-174 More about this Journal
Abstract
Fiber optic current sensors based on polarization-rotated reflection interferometry are demonstrated by incorporating them into polymeric optical waveguide components, including polarization-maintaining 3-dB couplers, TE-pass waveguide polarizers, and thermooptic phase modulators. To remove the bending induced birefringence, optical fiber coil is annealed at $850^{\circ}C$ for 24 hours. The reflection interferometry comprising polymer waveguide devices exhibit a highly stable output signal corresponding to the flowing current.
Keywords
Current sensors; Polymer waveguide; Optical sensors; Optical waveguides;
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