Journal
OPTICS COMMUNICATIONS
Volume 282, Issue 5, Pages 962-965Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2008.11.017
Keywords
Single-longitudinal-mode; Fiber lasers; Fiber Bragg gratings; Two cavity
Categories
Funding
- National High Technology Research and Development Program (63 Program) of China [2007AA01Z258]
- National Natural Science Foundation of China [60771008]
- New Century Excellent Talents in University [NCET-06-0076]
- Beijing Natural Science Foundation [4082024]
- Beijing Jiaotong University Foundation [2006XM003]
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We present a simple and stable single-longitudinal-mode (SLM) erbium-doped fiber linear-type laser. It consists of three FBGs directly written in a photosensitive erbium-doped fiber (PEDF) to form asymmetric two cavities with different cavity lengths, which can effectively increase the longitudinal mode spacing and suppress mode hopping, experimentally compared with symmetric two cavities and single-cavity structures. The stable SLM operation is conveniently achieved without accurate control of cavity length, and the laser linewidth of less than 5 kHz is acquired. (C) 2008 Elsevier B.V. All rights reserved.
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