Journal of the Optical Society of Korea

  • 제2권2호
  • /
  • Pages.74-79
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  • 1998
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  • 1226-4776(pISSN)
  • /
  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Fiber Fabry-Perot type Optical Current Transducer with Frequency Ramped Signal Processing Scheme

  • Park, Youn-Gil (KOREA Telecom) ;
  • Seo, Wan-Seok (Electronics and Telecommunication Research Institute) ;
  • Lee, Chung-E. (FFPI Industries, 909 Industrial Blvd) ;
  • Taylor, Henry-F. (Department of Electrical Engineering, Texas AM University, College Station)
  • 투고 : 1998.01.05
  • 발행 : 1998.09.01
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초록

The use of a fiber Fabry-Perot interferometer (FFPI) as an optical current transducer is demonstrated. A conventional inductive pickup coil converts the time-varying current I(t) being measured to a voltage waveform V(t) applied across a piezeolectric strip to which the FFPI is bonded. The strip experiences a longitudinal expansion and contraction, resulting in an optical phase shift ${\phi}(t)$ in the fiber proportional to V(t). This phase shift is measured using a frequency-modulated semiconductor light source, photodiodes to monitor the reflected light from the FFPI and the laser power, and a digital signal processor. Calibration routines compute V(t) and I(t) from the measured phase shift at a l KHz rate. Response to 60 Hz ac over the design range 0-1300A rms is characterized Transient response of the FFPI transducer is also measured.

키워드

참고문헌

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피인용 문헌

  1. Micromachined optical fiber current sensor vol.38, pp.25, 1999, https://doi.org/10.1364/AO.38.005298
  2. Electric current measurement using fiber-optic curvature sensor vol.77, 2016, https://doi.org/10.1016/j.optlaseng.2015.07.009
  3. Fiber Fabry-Perot interferometric sensor for the measurement of current flowing into a small fuse vol.14, pp.2, 2005, https://doi.org/10.5369/JSST.2005.14.2.091
  4. Micromachined low-finesse fabry-perot interferometer for the measurement of DC and AC electrical currents vol.3, pp.1, 2003, https://doi.org/10.1109/JSEN.2003.810112
  5. Fiber Fabry–Perot Interferometric Sensor for the Measurement of Electric Current Flowing through a Fuse vol.46, pp.6A, 2007, https://doi.org/10.1143/JJAP.46.3665
  6. Novel current measurement method based on fiber Bragg grating sensor technology vol.126, pp.1, 2006, https://doi.org/10.1016/j.sna.2005.10.011
  7. A fiber Bragg grating direct current sensor with temperature compensation based on electromagnetic force vol.7, pp.3, 2015, https://doi.org/10.1177/1687814015572516