Optimization of Hybrid Silicon Microring Lasers

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...

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Bibliographic Details
Published inIEEE photonics journal Vol. 3; no. 3; pp. 580 - 587
Main Authors Liang, D., Fiorentino, M., Srinivasan, S., Todd, S. T., Kurczveil, G., Bowers, J. E., Beausoleil, R. G.
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2011
Subjects
Fabrication
fabrication and characterization
Optical interconnections
optical interconnects
Semiconductor lasers
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Summary: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.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2011.2146244