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Applied Optics

Applied Optics


  • Vol. 42, Iss. 16 — Jun. 1, 2003
  • pp: 3241–3250

Fiber Fabry-Perot sensors for detection of partial discharges in power transformers

Bing Yu, Dae Woong Kim, Jiangdong Deng, Hai Xiao, and Anbo Wang  »View Author Affiliations

Applied Optics, Vol. 42, Issue 16, pp. 3241-3250 (2003)

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A diaphragm-based interferometric fiber optic sensor that uses a low-coherence light source was designed and tested for on-line detection of the acoustic waves generated by partial discharges inside high-voltage power transformers. The sensor uses a fused-silica diaphragm and a single-mode optical fiber encapsulated in a fused-silica glass tube to form an extrinsic Fabry-Perot interferometer, which is interrogated by low-coherence light. Test results indicate that these fiber optic acoustic sensors are capable of faithfully detecting acoustic signals propagating inside transformer oil with high sensitivity and wide bandwidth.

© 2003 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.1880) Instrumentation, measurement, and metrology : Detection
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot

Original Manuscript: September 16, 2002
Revised Manuscript: January 21, 2003
Published: June 1, 2003

Bing Yu, Dae Woong Kim, Jiangdong Deng, Hai Xiao, and Anbo Wang, "Fiber Fabry-Perot sensors for detection of partial discharges in power transformers," Appl. Opt. 42, 3241-3250 (2003)

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