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Proceedings Paper

A compact electrically-pumped hybrid silicon microring laser
Author(s): Di Liang; Tadashi Okumura; Hsu-Hao Chang; Daryl Spencer; Ying-Hao Kuo; Alexander W. Fang; Daoxin Dai; Marco Fiorentino; Raymond G. Beausoleil; John E. Bowers
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Paper Abstract

A compact electrically-pumped hybrid silicon microring laser is realized on a hybrid silicon platform. A simplified, selfaligned, deep-etch process is developed to result in low-loss resonator with a high quality factor Q>15,000. Small footprint (resonator diameter=50 μm), electrical and optical losses all contribute to lasing threshold as low as 5.4 mA and up to 65 °C operation temperature in continuous-wave (cw) mode. Outcoupling- and bus waveguide width-dependent studies are conducted for optimizing device structure. A simple qualitative study in current-voltage (IV) characteristic shows that dry etching through active region leads to <3× more leakage current at the same reverse bias than wet etch counterpart. It indicates a relatively good interface with tolerable surface recombination from deep dry etch. The spectrum is single mode with large extinction ratio (>40 dB) and small linewidth (<0.04 nm) observed. The unique bistability operation in ring resonator structure is also demonstrated.

Paper Details

Date Published: 3 December 2009
PDF: 8 pages
Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76310Q (3 December 2009); doi: 10.1117/12.850226
Show Author Affiliations
Di Liang, Univ. of California, Santa Barbara (United States)
Tadashi Okumura, Univ. of California, Santa Barbara (United States)
Hsu-Hao Chang, Univ. of California, Santa Barbara (United States)
Daryl Spencer, Univ. of California, Santa Barbara (United States)
Ying-Hao Kuo, Univ. of California, Santa Barbara (United States)
Alexander W. Fang, Univ. of California, Santa Barbara (United States)
Daoxin Dai, Univ. of California, Santa Barbara (United States)
Marco Fiorentino, Hewlett-Packard Labs. (United States)
Raymond G. Beausoleil, Hewlett-Packard Labs. (United States)
John E. Bowers, Univ. of California, Santa Barbara (United States)


Published in SPIE Proceedings Vol. 7631:
Optoelectronic Materials and Devices IV
Jian-Jun He; Guang-Hua Duan; Fumio Koyama; Ming C. Wu, Editor(s)

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