Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2011-02-22
2011-02-22
Thompson, Timothy J (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S290000
Reexamination Certificate
active
07894122
ABSTRACT:
An apparatus for shifting the frequency of light comprises a modulator comprising one or more light-reflective elements. The elements are arranged in N groups that are interleaved along the surface of the modulator. The elements are deflected in time in a periodic sawtooth or sinusoidal N-phase manner. The frequency shift can be varied continuously and quickly. Such a modulator may be operated at zero frequency shift, to produce an optical phase shift.
REFERENCES:
patent: 3431504 (1969-03-01), Adler
patent: 3796480 (1974-03-01), Preston, Jr. et al.
patent: 3938881 (1976-02-01), Biegelsen et al.
patent: 4157863 (1979-06-01), Clark
patent: 4886964 (1989-12-01), Pritchard et al.
patent: 4927245 (1990-05-01), Papuchon et al.
patent: 5262889 (1993-11-01), Fink
patent: 5311360 (1994-05-01), Bloom et al.
patent: 5652672 (1997-07-01), Huignard et al.
patent: 6108117 (2000-08-01), Furlani et al.
patent: 6243194 (2001-06-01), Brazas, Jr. et al.
patent: 6618187 (2003-09-01), Pilossof
patent: 6707591 (2004-03-01), Amm
patent: 6829077 (2004-12-01), Maheshwari
patent: 6829092 (2004-12-01), Amm et al.
patent: 6987616 (2006-01-01), Tamada et al.
patent: 7054054 (2006-05-01), Srinivasan et al.
patent: 7113320 (2006-09-01), Tanner
patent: 7202988 (2007-04-01), Payne et al.
patent: 7215461 (2007-05-01), Leung et al.
patent: 7231102 (2007-06-01), Ridgway
patent: 2002/0195418 (2002-12-01), Kowarz et al.
patent: 2007/0127932 (2007-06-01), Qi et al.
patent: 2007/0251916 (2007-11-01), Akahane et al.
patent: 2008/0055557 (2008-03-01), Yavid et al.
patent: 2008/0080042 (2008-04-01), Yang et al.
Kuck, H., et al., “Deformable Micromirror Devices as Phase Modulating High Resolution Light Valves”, The 8th International Conference on Solid-State Sensors and Actuators, and Eurosensors IX, Stockholm, Sweden, Jun. 25-29, 1995, pp. 301-304.
Corrigan, R., et al., “Silicon Light Machines—Grating Light Valve Technology Brief”, Silicon Light Machines, Jun. 2001 ver. C, pp. 1-8.
Jones, P.N., et al., “A moving-mirror frequency modulator for cold atom spectroscopy”, Review of Scientific Instruments, vol. 73, No. 7, 2002, pp. 2549-2551.
Payne, A., et al., “Enabling high data-rate imaging applications with grating light valve technology”, presented at Photonics West 2004—Micromachining and Microfabrication Symposium, Jan. 26, 2004, San Jose, CA, pp. 1-13.
Shea, H. R., “Reliability of MEMS for space applications”, Proceedings of SPIE, vol. 6111, 2006, pp. 61110A-1 to 61110A-10.
Yan, X., et al., “Analysis of Optical Collecting System for MEMS-based Grating Moving Light Modulator”, Proceedings of the 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems, Jan. 18-21, 2006, Zhuhai, China, pp. 1335-1338.
Mughal, M.J. and Riza, N. A., “Compact Acoustooptic High-Speed Variable Attenuator for High-Power Applications”, IEEE Photonics Technology Letters, vol. 14, No. 4, Apr. 2002, pp. 510-512.
Riza, N. A. and Yaqoob, Z., “Submicrosecond Speed Variable Optical Attenuator Using Acoustooptics”, IEEE Photonics Technology Letters, vol. 13, No. 7, Jul. 2001, pp. 693-695.
Mali, R. K., et al., “Development of microelectromechanical deformable mirrors for phase modulation of light”, Opt. Eng., vol. 36, No. 2, Feb. 1997, pp. 542-548.
Zhou, G. and Chan, F. S., “Nondispersive optical phase shifter array using microelectromechanical systems based gratings”, Optics Express, vol. 15, No. 17, Aug. 2007, pp. 10958-10963.
Dai, C.-L., et al., “Fabrication of a micromachined optical modulator using the CMOS process”, J. Micromech. Microeng., vol. 11, 2001, pp. 612-615.
Solgaard, O., et al., “Deformable grating optical modulator”, Optics Letters, vol. 17, No. 9, May 1992, pp. 688-690.
Shrauger, V. and Warde, C., “Development of a high-speed, high fill-factor phase-only spatial light modulator”, Proceedings of SPIE, vol. 4291, 2001, pp. 101-108.
Stevenson, W.H., “Optical Frequency Shifting by Means of a Rotating Diffraction Grating”, Applied Optics, vol. 9, No. 3, Mar. 1970, pp. 649-652.
Li, K., et al., “Phased arrays of micromirrors for programmable shaping of ultrashort pulses”, Wednesday Afternoon, Cleo 2001, pp. 339-340.
Zhang, X.M. et al., “Polysilicon 3D-Mirror Frequency Shifter for WDM Fibre-Optic Communication Applications”, IEEE, pp. 79-80, 2000.
Oyen Wiggs Green & Mutala LLP
Thompson Timothy J
LandOfFree
Frequency-shifting micro-mechanical optical modulator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency-shifting micro-mechanical optical modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency-shifting micro-mechanical optical modulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2643276