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Gain-coupled DFB semiconductor lasers
1993
1992 International Conference on Lasers and Optoelectronics
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External optical feedback sensitivity of partly gaincoupled DFB semiconductor lasers has been analyzed in above threshold operation regime. Both the longitudinal spatial hole burning and the nonlinear gain compression have been taken into account. A comparison has been made among X/4-shifted, pure index-coupled and partly gain-coupled DFB laser diodes. Even though pure index-coupled and partly gain coupled DFB lasers exhibit similar sensitivity to external optical feedback at the threshold,
doi:10.1117/12.144137
fatcat:s4kdhhhwa5edhp7pmmgwplf5qm