29 January 2007 Novel optic fiber voltage sensor based on interference between modes
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Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62797G (2007) https://doi.org/10.1117/12.725955
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China
Abstract
This paper investigates the principle of interference between modes in fiber, and gives the relationship between interference of LP01 and LP11even mode and the axial length variety in ideal fiber. A novel scheme of voltage transducer based on interference between modes is brought out. A PANDA fiber wrapped quartz crystal sandwiched with two pieces of metal electrodes works as sensing interferometer. When voltage is applied on the metal electrode, circumference of quartz crystal will change. This can modulate the light path difference of LP01 and LP11even mode in fiber. A receiving interferometer balances the light path difference with a fiber wrapped piezoelectric ceramics and a phase tracer. Control voltage of the receiving interferometer is output signal of the transducer. Simulation result and adjusting method of dynamic range is given in the paper. It can provide a new method for designing voltage transducers.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Feng Liu, Weihong Bi, Xuan Guo, "Novel optic fiber voltage sensor based on interference between modes", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62797G (29 January 2007); doi: 10.1117/12.725955; https://doi.org/10.1117/12.725955
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