High signal-to-noise ratio linear cavity multiwavelength erbium-doped fiber laser with two intracavity fiber periodic filters

Yanfeng Zhang; Yong Yao; Qi Wang

doi:10.1117/12.575649

10 January 2005 High signal-to-noise ratio linear cavity multiwavelength erbium-doped fiber laser with two intracavity fiber periodic filters

Yanfeng Zhang, Yong Yao, Qi Wang

Author Affiliations +

Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.575649
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

A new linear cavity multi-wavelength erbium-doped fibre laser with enhanced signal-to-noise ratio characteristics is demonstrated. The laser system is developed by two steps from a conventional ring cavity configuration which consists of a frequency-shifted cavity and single multi-wavelength filters. Firstly, the noises characteristic is improved about 2.8 dB on an average with the inset of a dual-pass Mach-Zender interferometer and shifting the station of output coupler However, the output power is suppressed about 1.5 dB on an average by the change. Next, the noises characteristic is further improved by about 4.3dB against the conventional ring cavity configuration and the output power is increased by about 1.8 dB by utilizing a special Bragg grating array replacing the F-P filter to compose a linear cavity configuration.. The emitting range with output flatness better than 3dB covers 20nm wavelengths from 1540 to 1560 nm, with line spacing of 0.8nm and average output power of 0.8dBm.The linear cavity multi-wavelength erbium-doped fibre laser with high signal-to noise ratio can be useful in a wavelength division multiplexing transmission system.

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Yanfeng Zhang, Yong Yao, and Qi Wang "High signal-to-noise ratio linear cavity multiwavelength erbium-doped fiber laser with two intracavity fiber periodic filters", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); https://doi.org/10.1117/12.575649

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KEYWORDS

Optical filters

Signal to noise ratio

Fiber lasers

Linear filtering

Electronic filtering

Fiber Bragg gratings

Interferometers

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