標題: High sensitivity bulk electro-optic modulator field sensor for high voltage environments
作者: Huang, MS
Lu, MH
Shy, JT
光電工程學系
Department of Photonics
公開日期: 1-十二月-2004
摘要: An optical electric field sensor is an effective instrument for surveying the electric or magnetic field around a high voltage electrical system. A Mach-Zender interferometer type modulator is generally used in this kind of sensor. The sensor has good sensitivity to electric or magnetic fields, but an unexpected high field could easily destroy the modulator owing to its short electrode separation. A bulk modulator usually has long separation between the two electrodes, which can prevent modulator breakdown, but its sensitivity is usually worse than the Mach-Zender interferometer type sensor. To solve this problem, a Fabry-Perot cavity is used to improve the sensitivity of the bulk modulator type sensor. This work also discusses the optimization of the sensor sensitivity. When the sensor works on the point where a cavity resonance has maximal slope, the proposed sensor has approximately the same sensitivity for sensing a field as the Mach-Zender interferometer type sensor. (C) 2004 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.1818492
http://hdl.handle.net/11536/25613
ISSN: 0034-6748
DOI: 10.1063/1.1818492
期刊: REVIEW OF SCIENTIFIC INSTRUMENTS
Volume: 75
Issue: 12
起始頁: 5364
結束頁: 5366
顯示於類別:期刊論文


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  1. 000225483100048.pdf