Depolarizer improvement for optical fiber vibration sensor

Toshiki Kubo; Ataru Takahashi; Nancy Zhao; Ryozo Yamauchi

doi:10.1117/12.968575

7 November 2012 Depolarizer improvement for optical fiber vibration sensor

Toshiki Kubo, Ataru Takahashi, Nancy Zhao, Ryozo Yamauchi

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421AK (2012) https://doi.org/10.1117/12.968575
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

An optical signal with a polarization dependence behaves as a noise signal in a vibration sensing optical fiber. To remove the noise signal, the optical fiber vibration sensor needs to have a depolarizer. Fusion splicing the polarization maintaining fiber with a 45 degree angle offset is a common method to produce the depolarizer. In this paper, we present a method to improve the depolarizer for the vibration sensor through the use of fusion splicing. We succeeded to reduce the noise with the improved depolarizer that uses a method to observe the fiber end surface of polarization maintaining fiber for analyzing the polarization plane.

Citation Download Citation

Toshiki Kubo, Ataru Takahashi, Nancy Zhao, and Ryozo Yamauchi "Depolarizer improvement for optical fiber vibration sensor", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421AK (7 November 2012); https://doi.org/10.1117/12.968575

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