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Teardrop Reflector-Assisted Unidirectional Hybrid Silicon Microring Lasers

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8 Author(s)
Di Liang ; Intell. Infrastruct. Lab., HP Labs., Palo Alto, CA, USA ; Srinivasan, S. ; Fattal, D.A. ; Fiorentino, M.
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We study directional bistability in hybrid silicon microring lasers and demonstrate a unidirectional laser. Unidirectional emission is achieved by integrating a passive reflector that feeds laser emission back into the laser cavity to introduce an extra unidirectional gain. We show that the length of the passive reflector is a critical parameter in determining the lasing behavior.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 22 )