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Proceedings Paper

Narrow linewidth short-cavity random fiber laser with a π-phase shift grating
Author(s): Shuaijie Miao; Wentao Zhang; Ying Song; Fang Li
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Paper Abstract

We proposed a novel structure of short-cavity random fiber laser (RFL) with a stable narrow linewidth output. A random-spaced Bragg grating array is used for random feedback. A ring optical path and the grating array form a short half-open cavity, and a high-precision π-phase-shifted grating (π-FBG) is placed in the ring path for filtering and modelocking to ensure a stable single-mode random laser operation. The linewidth of the laser is 257 Hz with 50 dB sidemode-suppression-ratio (SMSR). The laser wavelength drift measured in the laboratory is less than 1 pm within 20 min. The RFL has a simple structure and can achieve a stable narrow linewidth single mode output, which provides a new choice for high resolution optical fiber sensing.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111993A (28 August 2019); doi: 10.1117/12.2541238
Show Author Affiliations
Shuaijie Miao, Institute of Semiconductors (China)
Shijiazhuang Tiedao Univ. (China)
Wentao Zhang, Institute of Semiconductors (China)
Ying Song, Shijiazhuang Tiedao Univ. (China)
Fang Li, Institute of Semiconductors (China)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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