Title :
Optimization of Hybrid Silicon Microring Lasers
Author :
Liang, D. ; Fiorentino, M. ; Srinivasan, S. ; Todd, S.T. ; Kurczveil, G. ; Bowers, J.E. ; Beausoleil, R.G.
Author_Institution :
Intell. Infrastruct. Lab., Hewlett-Packard Labs., Palo Alto, CA, USA
fDate :
6/1/2011 12:00:00 AM
Abstract :
In this paper, we review the recent optimization work in hybrid silicon microring lasers. Device structure and fabrication procedures are discussed first, followed by two major improvements in carrier injection and thermal management. A simple, well-controlled quantum well undercut leads to about 20% enhancement of injection efficiency. A silicon-on-diamond (SOD) substrate is demonstrated to fundamentally solve the device heating issue for silicon-on-insulator (SOI)-based active devices. SOD rib waveguides show low propagation loss of 0.74 dB/cm, which is 0.2 dB/cm higher than SOI counterparts. More than 22× reduction of device heating in hybrid silicon microring lasers is projected by simulations.
Keywords :
diamond; elemental semiconductors; micro-optics; optical waveguides; optimisation; quantum well lasers; rib waveguides; silicon; silicon-on-insulator; C; SOD rib waveguides; Si; carrier injection; device heating; hybrid silicon microring lasers; optimization; propagation loss; silicon-on-diamond substrate; silicon-on-insulator; simple quantum well; thermal management; well-controlled quantum well; Fabrication; Optical interconnections; Semiconductor lasers; Semiconductor lasers; fabrication and characterization; optical interconnects;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2011.2146244
