Efficient multi-wavelength fiber laser operating in L-band

In this paper, an efficient L-band multi-wavelength erbium-doped fiber ring laser is demonstrated by recycling backward 1550 nm band amplified spontaneous emission as secondary pump source for the unpumped EDF section. The lasing threshold is reduced and the slope efficiency is improved. A piece of...

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Bibliographic Details
Published in:Optics communications 2002-04, Vol.204 (1), p.323-326
Main Authors: Zhao, Chun-Liu, Yang, Shiquan, Meng, Hongyun, Li, Zhaohui, Yuan, Shuzhong, Guiyun, Kai, Dong, Xiaoyi
Format: Article
Language:English
Subjects:
ASE pump
Exact sciences and technology
Fiber lasers
Fundamental areas of phenomenology (including applications)
L-band
Lasers
Multi-wavelength fiber laser
Multimode fiber filter
Optics
Physics
Spatial mode-beating filter
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Summary:In this paper, an efficient L-band multi-wavelength erbium-doped fiber ring laser is demonstrated by recycling backward 1550 nm band amplified spontaneous emission as secondary pump source for the unpumped EDF section. The lasing threshold is reduced and the slope efficiency is improved. A piece of multimode fiber is used as a spatial mode-beating filter. By adjusting the polarization state of the light, the number of lasing wavelength and their spaces are controlled. In dual-wavelength laser, the power of each channel is 4 mW with 40 dB side-mode-suppression-ratio.
ISSN:0030-4018
1873-0310
DOI:10.1016/S0030-4018(02)01244-0