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Proceedings Paper

Comparison between the performance of the P-doped and Ge-doped Raman fiber lasers based on numerical simulations
Author(s): Ming Feng; Yi-Gang Li; Jing Li; Jia-Fang Li; Sheng-Ping Chen; Kecheng Lu
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Paper Abstract

With a published model that describes a nested fiber Raman cavity using FBGs as reflectors, we have made numerical simulations for the comparison between the performance of P-doped and Ge-doped fiber. Although the former fibers are the standard choice for fiber Raman lasers due to the large Raman gain, the latter can be also of interest because they present a large Raman shift so that the configuration of the Raman fiber laser can be simplified. We have considered a two-step Raman laser using a P-doped fiber and a six-step Raman laser using a Ge-doped fiber, both pumped by 1060 nm and emitting at 1480 nm. The effects of the Raman fiber length, output coupler reflectivity and splice loss upon the behavior of both lasers are studied. Simulation results show that the P-doped fiber laser requires a longer fiber length while the Ge-doped fiber laser requires a higher output mirror reflectivity, and the RFL using Ge-doped fiber is more sensitive to the splice loss because of its large Stokes wave number. Finally, by comparison in the optimum configuration, we find that the P-doped fiber laser shows better output characteristics than Ge-doped fiber laser.

Paper Details

Date Published: 10 January 2005
PDF: 8 pages
Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.574644
Show Author Affiliations
Ming Feng, Nankai Univ. (China)
Yi-Gang Li, Nankai Univ. (China)
Jing Li, Nankai Univ. (China)
Jia-Fang Li, Nankai Univ. (China)
Sheng-Ping Chen, Nankai Univ. (China)
Kecheng Lu, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 5623:
Passive Components and Fiber-based Devices
Yan Sun; Shuisheng Jian; Sang Bae Lee; Katsunari Okamoto, Editor(s)

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