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Single-mode characteristics of short coupled-cavity semiconductor lasers

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4 Author(s)
Wang Jianglin ; Tsinghua University, Beijing, China ; Zhang Hanyi ; Wu Qun ; Zhou Bingkun

The characteristics of single-longitudinal-mode selection in short coupled-cavity (SCC) semiconductor lasers with a plane reflector are analyzed theoretically. It is found that the power ratio of the main mode to other side modes can be increased significantly by reducing the reflectivity of a laser diode facet adjacent to the external mirror. Based on the theoretical results, a new type of SCC laser is developed; single-longitudinal-mode output with 35-40 dB side mode suppression ratio is obtained under CW and 150 MHz modulation conditions.

Published in:

IEEE Journal of Quantum Electronics  (Volume:23 ,  Issue: 6 )