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Proceedings Paper

Two kinds of novel tunable Thulium-doped fiber laser
Author(s): Xiaowei Ma; Daru Chen; Gaofeng Feng; Junyong Yang
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Paper Abstract

Two kinds of tunable Thulium-doped fiber laser (TDFL) respectively using a Sagnac loop mirror and a novel tunable multimode interference (MMI) fiber filter are experimentally demonstrated. The TDFL with the Sagnac loop mirror made by a 145.5-cm polarization-maintaining fiber (PMF) can operate with stable dual-wavelength lasing or tunable single-wavelength lasing around 1860nm. Both stable dual-wavelength and tunable single-wavelength lasing are achieved by adjusting a polarization controller in the Sagnac loop mirror. The TDFL with a novel tunable MMI fiber filter formed by splicing a segment of a special no-core fiber that is an all silica fiber without fiber core to single mode fibers can achieve tuning range from 1813.52 nm to 1858.70 nm. The no-core fiber with a large diameter of 200 μm is gradually vertically covered by refractive index matching liquid, which leads to a wavelength tuning of the transmission peak of the MMI fiber filter. The relationship between the refractive index of the refractive index matching liquid and the peak wavelength shift of the MMI fiber filter is also discussed. Using the MMI fiber filter, a Thulium-doped fiber laser with a tuning range of 45.18 nm is demonstrated.

Paper Details

Date Published: 11 November 2014
PDF: 10 pages
Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 92740O (11 November 2014); doi: 10.1117/12.2071495
Show Author Affiliations
Xiaowei Ma, Zhejiang Normal Univ. (China)
Joint Research Lab. of Optics, Zhejiang Normal Univ. and Zhejiang Univ. (China)
Daru Chen, Zhejiang Normal Univ. (China)
Joint Research Lab. of Optics, Zhejiang Normal Univ. and Zhejiang Univ. (China)
Gaofeng Feng, Futong Group, Ltd. (China)
Junyong Yang, Futong Group, Ltd. (China)


Published in SPIE Proceedings Vol. 9274:
Advanced Sensor Systems and Applications VI
Tiegen Liu; Shibin Jiang; Niels Neumann, Editor(s)

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