Patents - Constance Chang-Hasnain

Ultra broadband mirror using subwavelength grating
Constance Chang-Hasnain, Carlos Fernando Rondina Mateus and Michael Chung-Yi Huang
U.S. Patent 7,304,781. December 2007

Variable semiconductor all-optical buffer using slow light based on electromagnetically induced transparency
Connie J. Chang-Hasnain and Pei-Cheng Ku
U.S. Patent 7,038,827. May 2006

Variable semiconductor all-optical buffer using slow light based on electromagnetically induced transparency
Connie J. Chang-Hasnain and Pei-Cheng Ku
U.S. Patent 6,900,920. May 2005

Apparatus and method for controlled cantilever motion through torsional beams and a counterweight
Steven M. Chase, Connie J. Chang-Hasnain and Jeffrey Michael Waite
U.S. Patent 6,813,053. November 2004

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,760,357. July 2004

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,535,541. March 2003

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,493,371. December 2002

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,493,372. December 2002

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,493,373. December 2002

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,490,311. December 2002

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,487,230. November 2002

Vertical cavity apparatus with tunnel junction
Julien Boucart, Constance Chang-Hasnain, Michael Jansen, Rashit Nabiev and Wupen Yuen
U.S. Patent 6,487,231. November 2002

Hermetically sealed semiconductor laser device
Constance Chang-Hasnain, Renato Dato, Philip Worland and Rang-Chen Yu
U.S. Patent 6,275,513. August 2001

Monitoring and control assembly for wavelength stabilized optical system
Constance Chang-Hasnain, Renato Dato, Peter Kner, Gabriel S. Li, Philip Worland, Rang-Chen Yu and Wupen Yuen
U.S. Patent 6,233,263. May 2001

Flexible optical multiplexer
Constance Chang-Hasnain, Marc Schwager and Rang-Chen Yu
U.S. Patent 6,226,425. May 2001

Vertical optical cavities produced with selective area epitaxy
Constance Chang-Hasnain, Gabriel Li and Wupen Yuen
U.S. Patent 6,222,871. April 2001

Fabrication of multiple-wavelength vertical-cavity opto-electronic device arrays
Wupen Yuen, Constance J. Chang-Hasnain and Gabriel S. Li
U.S. Patent 6,174,749. January 2001

Method for quality control and yield enhancement
Yongan Wu and Constance J. Chang-Hasnain
U.S. Patent 6,148,268. November 2000

Vertical-cavity surface-emitting laser with an intracavity quantum-well optical absorber
Sui F. Lim, Janice A. Hudgings, Kam-Yin Lau and Connie J. Chang-Hasnain
U.S. Patent 6,026,108. February 2000

Vertical optical cavities produced with selective area epitaxy
Gabriel S. Li, Wupen Yuen and Constance J. Chang-Hasnain
U.S. Patent 5,960,024. September 1999

High performance micromechanical tunable vertical cavity surface emitting laser
Constance J. Chang-Hasnain, Edward C. Vail and Marianne S. Wu
U.S. Patent 5,771,253. June 1998

Monolithic wavelength meter and photodetector using a wavelength dependent reflector
Rashit F. Nabiev, Constance J. Chang-Hasnain, Lars E. Eng and Kam-Yin Lau
U.S. Patent 5,760,419. June 1998

Intracavity quantum well photodetector integrated within a vertical-cavity surface-emitting laser and method of operating same
Sui F. Lim and Connie J. Chang-Hasnain
U.S. Patent 5,757,837. May 1998

Electrostatically-controlled cantilever apparatus for continuous tuning of the resonance wavelength of a Fabry-Perot cavity
Constance J. Chang-Hasnain, Edward C. Vail and Marianne S. Wu
U.S. Patent 5,629,951. May 1997

Semiconductor laser geometry for broad-angle far-field addressing
Yan Sun, Daniel A. Francis, Stephen A. Biellak and Constance J. Chang-Hasnain
U.S. Patent 5,627,852. May 1997

One-to-many simultaneous and reconfigurable optical two-dimensional plane interconnections using multiple wavelength, vertical cavity; surface-emitting lasers and wavelength-dependent detector planes
Alan E. Willner, Constance J. Chang-Hasnain and James E. Leight
U.S. Patent 5,546,209. August 1996

Apparatus and method for routing optical signals through wavelength-coding in a self-routed wavelength addressable network
Constance J. Chang-Hasnain, Kam-Yin Lau, Joseph W. Goodman and Anujan Varma
U.S. Patent 5,541,756. July 1996

Single mode laser with a passive antiguide region
Constance J. Chang-Hasnain, Yongan Wu and Rashit Nabiev
U.S. Patent 5,539,759. July 1996

Monolithic multiple-wavelength laser array
Constance J. Chang-Hasnain
U.S. Patent 5,029,176. July 1991

Cross-coupled quantum-well stripe laser array
Constance J. Chang-Hasnain and Elyahou Kapon
U.S. Patent 4,922,500. May 1990