Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2011-03-29
2011-03-29
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S026000, C372S046013, C372S050100, C372S050110
Reexamination Certificate
active
07916768
ABSTRACT:
A Vertical-Cavity Surface-Emitting Laser (VCSEL) is disclosed, comprising an optical cavity bounded by a top mirror and a bottom mirror, wherein the top mirror has multiple layers of alternating refractive index, of which the bottom three or more layers of the top mirror are deep oxidation layers having an increased oxidation length, a light emitting active region between the top mirror and the bottom mirror, and an aperture with tapered edges between the active region and the top mirror, wherein the aperture has a thickness, a taper length, an oxide aperture length, a taper angle, and an aperture opening diameter designed to reduce an optical mode's diameter without significantly increasing the optical mode's round trip scattering loss.
REFERENCES:
Chang et al., High-efficiency, high speed VCSELs with deep oxidation layers in Electronics Letters, Oct. 26, 2006.
Chang, Y. et al., “High-efficiency, high-speed VCSELs with deep oxidation layers,” Electronics Letters, vol. 42, No. 22, Oct. 26, 2006, pp. 1281-1282.
Chang, Y. et al., “High-efficiency, high-speed VCSELs with 35 Gbit/s error-free operation,” Electronics Letters, vol. 43, No. 19, Sep. 13, 2007, pp. 1022-1023.
Chang, Y. et al., “High-speed tapered-oxide-apertured 980 nm VCSELs supporting data rates up to 30 Gb/s,” Proc. Lasers and Electro-Optics Society Annual Mtg., paper No. WR3, Lake Buena Vista, FL, Oct. 24, 2007, two pages.
Chang, Y. et al., “Small-dimension power-efficient high-speed vertical-cavity surface-emitting lasers,” Electronics Letters, vol. 43, No. 7, Mar. 29, 2007, pp. 396-397.
Hegblom, E. et al., “Scattering losses from dielectronic apertures in vertical-cavity lasers,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 3, No. 2, Apr. 1997, pp. 379-389.
Chang Yu-Chia
Coldren Larry A.
Gates & Cooper LLP
Nguyen Dung T
The Regents of the University of California
LandOfFree
Small dimension high-efficiency high-speed vertical-cavity... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Small dimension high-efficiency high-speed vertical-cavity..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Small dimension high-efficiency high-speed vertical-cavity... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2730741