Chinese Optics Letters, 2008, 6 (2): 02120, Published Online: Mar. 5, 2008  

Low-frequency fluctuation in multimode semiconductor laser subject to optical feedback

Author Affiliations
Information Engineering College of Zhengzhou University, Zhengzhou 450052
Abstract
Dynamics of a semiconductor laser subject to moderate optical feedback operating in the low-frequency fluctuation regime is numerically investigated. Multimode Lang-Kobayashi (LK) equations show that the low-frequency intensity dropout including the total intensity and sub-modes intensity is accompanied by sudden dropout simultaneously, which is in good agreement with experimental observation. The power fluctuation is quite annoying in practical applications, therefore it becomes important to study the mechanism of power fluctuation. It is also shown that many factors, such as spontaneous emission noise and feedback parameter, may influence power fluctuation larger than previously expected.
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Xu Zhang, Huiying Ye, Zhaoxin Song. Low-frequency fluctuation in multimode semiconductor laser subject to optical feedback[J]. Chinese Optics Letters, 2008, 6(2): 02120.

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