Acta Optica Sinica, Volume. 17, Issue 12, 1609(1997)
Fiber Grating External Cavity Semiconductor Laser with Strong Optical Feedback
The linewidth reduction of a external cavity semiconductor laser with strong optical feedback is analysed. The effects of residual reflectivity r 2 of the AR coated laser facet, external cavity reflectivity r 3, and external cavity length L ex on the linewidth are studied theoretically. A fiber grating is coupled to a conventional multi longitudinal mode semiconductor laser with on facet AR coated. Single longitudinal mode operation with side mode suppression ration over 30 dB and linewidth below 120 kHz is achieved.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Fiber Grating External Cavity Semiconductor Laser with Strong Optical Feedback[J]. Acta Optica Sinica, 1997, 17(12): 1609