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Proceedings Paper

Double-wavelength optical fiber laser and its application for large step height measurement
Author(s): Lianlian Dong; Fang Xie; Sen Ma; Yunzhi Wang; Liang Chen
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Paper Abstract

Two kinds of tunable double-wavelength erbium-doped fiber (EDF) ring lasers were developed and their application to step height measurement using two-wavelength self-mixing interferometry (SMI) was demonstrated. The fiber lasers can emit two different wavelengths without any laser mode competition. Each wavelength has its own gain medium which is a length of erbium-doped fiber. Fiber Bragg gratings are used to determine the value of the emitted wavelengths. Large step heights can be measured using multiple self-mixing interference of the two wavelengths. The maximum height that can be measured is half synthetic wavelength of the two wavelengths. A step height of 2mm constructed with two gauge blocks has been measured. The standard deviation of measurement results is 2.5nm.

Paper Details

Date Published: 13 June 2017
PDF: 7 pages
Proc. SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 104492P (13 June 2017); doi: 10.1117/12.2270889
Show Author Affiliations
Lianlian Dong, Beijing Jiaotong Univ. (China)
Fang Xie, Beijing Jiaotong Univ. (China)
Sen Ma, Beijing Jiaotong Univ. (China)
Yunzhi Wang, Beijing Jiaotong Univ. (China)
Liang Chen, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 10449:
Fifth International Conference on Optical and Photonics Engineering
Anand Krishna Asundi, Editor(s)

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