Title :
Teardrop Reflector-Assisted Unidirectional Hybrid Silicon Microring Lasers
Author :
Liang, Di ; Srinivasan, Sudharsanan ; Fattal, David A. ; Fiorentino, Marco ; Huang, Zhihong ; Spencer, Daryl T. ; Bowers, John E. ; Beausoleil, Raymond G.
Author_Institution :
Intell. Infrastruct. Lab., HP Labs., Palo Alto, CA, USA
Abstract :
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.
Keywords :
laser feedback; laser stability; microcavity lasers; optical bistability; semiconductor lasers; silicon; Si; directional bistability; hybrid silicon microring lasers; laser cavity; passive reflector; teardrop reflector; unidirectional emission; Laser modes; Optical waveguides; Ring lasers; Semiconductor lasers; Silicon; Waveguide lasers; Hybrid integration; laser; ring resonator;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2216864
