DocumentCode :
1417081
Title :
Push-Pull Modulation of a Composite-Resonator Vertical-Cavity Laser
Author :
Chen, Chen ; Johnson, Klein L. ; Hibbs-Brenner, Mary ; Choquette, Kent D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Volume :
46
Issue :
4
fYear :
2010
fDate :
4/1/2010 12:00:00 AM
Firstpage :
438
Lastpage :
446
Abstract :
The two coupled optical cavities within a vertical-cavity surface-emitting laser have the unique ability to modulate the spatial distribution of the longitudinal optical mode, without changing the total photon density in the laser cavities, by simultaneously directly modulating the two optical cavities exactly out-of-phase. A rate-equation analysis predicts that this condition, which we term push-pull modulation, exhibits a superior modulation response than that of conventional direct modulation. The push-pull modulation can enable high-speed operation with low power consumption, as a large modulation bandwidth can be achieved independent of the total photon density and/or the injection dc current. Experimental evidence of spatially changing the longitudinal mode is presented, and push-pull modulation at 2.5 Gb/s is demonstrated for the first time.
Keywords :
high-speed optical techniques; laser cavity resonators; laser modes; optical couplers; optical modulation; surface emitting lasers; bit rate 2.5 Gbit/s; composite-resonator vertical-cavity laser; coupled optical cavities; high-speed operation; longitudinal optical mode; modulation bandwidth; optical modulation; push-pull modulation; spatial distribution; vertical-cavity surface-emitting laser; Bandwidth; Chirp modulation; High speed optical techniques; Laser modes; Optical arrays; Optical coupling; Optical modulation; Semiconductor laser arrays; Surface emitting lasers; Vertical cavity surface emitting lasers; Coupled cavity; semiconductor lasers; vertical-cavity surface-emitting lasers (VCSEL);
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.2009.2031119
Filename :
5412131
Link To Document :
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