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Proceedings Paper

Internal optical feedback effect in fiber ring laser
Author(s): Junping Zhou; Yixian Ge
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Paper Abstract

The internal optical feedback effect in fiber ring lasers is similar to self-mixing interference, and the former has same phase sensitivity with the later: one fringe shifting corresponds to a target displacement of half optical wavelength λ. The optical feedback effect presented in this paper is achieved inside the laser cavity. So the feedback part becomes part of the fiber ring laser, and makes the laser not only a light source, but also a sensitive element. The similarities and differences between optical feedback in fiber ring lasers and self-mixing interference in semiconductor lasers are analyzed, which offers the theoretical foundation and experiment technology for fiber active sensing applications. The internal optical feedback system based on fiber ring lasers satisfies the need of microminiaturized sensing device and the interrogation demand of optical fiber. This system can easily perform noncontact and remote measurement of velocity, vibration, displacement, etc.

Paper Details

Date Published: 31 December 2010
PDF: 6 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75444S (31 December 2010); doi: 10.1117/12.885362
Show Author Affiliations
Junping Zhou, Nanjing Univ. of Information Science and Technology (China)
Yixian Ge, Nanjing Univ. of Information Science and Technology (China)


Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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