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Proceedings Paper

C+L band multi-wavelength fiber laser based on cascaded semiconductor optical amplifier
Author(s): Zhaoying Wang; Lei Zhang; Dongfang Jia
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Paper Abstract

In this paper, a multi-wavelength fiber laser based on cascaded semiconductor optical amplifier (SOA) was proposed by using a high birefringence fiber loop mirror (Hi-Bi FLM) as wavelength filter. The 0.6nm homogeneous broadening line-width of the SOA enabled laser oscillation with WDM ITU-grid spacing possible. With this configuration, SOAs with small signal gain peak wavelengths at 1540nm and 1510nnm were cascaded as gain medium in the laser for laser oscillating in C+L band. The output results with different driving current of SOAs were obtained and compared experimentally. The wavelength spacing of this laser was controlled by using different lengths of Hi-Bi fiber. By using 5.9m Hi-Bi fiber in Hi-Bi FLM, 100GHz wavelength spacing was obtained. The output 26 wavelengths within 6dB bandwidth spacing on 100GHz were obtained. These multi-wavelengths covered C+L band and were centered on 1566.599nm. The line-width of each channel was 0.102nm with more than 25dB SNR. All these channels can be continuously tuned over 50GHz by controlling the polarization controller in Hi-Bi FLM. Output of multi-wavelength fiber laser with only one SOA as gain medium was also presented for comparison. Keywords: multi-wavelength, fiber laser, semiconductor optical amplifier, cascaded, C+L band, high birefringence fiber loop mirror, 100GHz, continuously tunable, homogenous broadening, wavelength-division multiplexing

Paper Details

Date Published: 1 December 2009
PDF: 6 pages
Proc. SPIE 7630, Passive Components and Fiber-based Devices VI, 76302F (1 December 2009); doi: 10.1117/12.850596
Show Author Affiliations
Zhaoying Wang, Tianjin Univ. (China)
Lei Zhang, Tianjin Univ. (China)
Dongfang Jia, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7630:
Passive Components and Fiber-based Devices VI
Perry P. Shum, Editor(s)

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