Optics: measuring and testing – By light interference – Rotation rate
Reexamination Certificate
2006-09-12
2006-09-12
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Rotation rate
C385S012000
Reexamination Certificate
active
07106448
ABSTRACT:
An integrated optic gyroscope is disclosed which is based on a photonic integrated circuit (PIC) having a bidirectional laser source, a pair of optical waveguide phase modulators and a pair of waveguide photodetectors. The PIC can be connected to a passive ring resonator formed either as a coil of optical fiber or as a coiled optical waveguide. The lasing output from each end of the bidirectional laser source is phase modulated and directed around the passive ring resonator in two counterpropagating directions, with a portion of the lasing output then being detected to determine a rotation rate for the integrated optical gyroscope. The coiled optical waveguide can be formed on a silicon, glass or quartz substrate with a silicon nitride core and a silica cladding, while the PIC includes a plurality of III–V compound semiconductor layers including one or more quantum well layers which are disordered in the phase modulators and to form passive optical waveguides.
REFERENCES:
patent: 4326803 (1982-04-01), Lawrence
patent: 4661964 (1987-04-01), Haavisto
patent: 5327215 (1994-07-01), Bernard et al.
patent: 5408492 (1995-04-01), Vossler et al.
patent: 5872877 (1999-02-01), Haavisto
patent: 6259089 (2001-07-01), Vali et al.
patent: 6587205 (2003-07-01), Goldner et al.
patent: 6613596 (2003-09-01), Bloemer et al.
patent: 2 178 526 (1987-02-01), None
patent: 363023211 (1988-02-01), None
Recent Developments in Silicon Optoelectronic Devices, Wonk, International Confrence on Microelectronics, IEEE, May 2002, pp. 285-292.
W. Stutius and W. Streifer, “Silicon nitride films on silicon for optical waveguides,” Applied Optics, vol. 16, No. 12, Dec. 1997, pp. 3218-3222.
C. H. Henry, et al, “Low Loss Si3N4-SiO2optical waveguides on SI”, Applied Optics, vol. 26, No. 13, Jul. 1987, pp. 2621-2624.
G. N. De Brabander, et al, “Single Polarization Optical Waveguide on Silicon,” IEEE Journal of Quantum Electronics, vol. 27 No. 3 Mar. 1991 pp. 575-579.
Kenya Suzuki et al, “Monolithically Integrated Resonator Microoptic Gyro on silica Planar Lightwave Circuit,” Journal of Lightwave Technology, vol. 18, No. 1, Jan. 2000, pp. 66-72.
Sabina Merlo, et al, “Fiber Gyroscope Principles,” Handbook of Fibre Optic Sensing Technology, 2000 John Wiley & Sons, Ltd. Chapter 16, pp. 1-23.
G. Allen Vawter, et al, “Developments in Pursuit of a Micro-Optic Gyroscope,” SAND Report No. 2003-0665, Mar. 2003 pp. 1-39.
Guo Junpeng
Sullivan Charles T.
Vawter G. Allen
Zubrzycki Walter J.
Connolly Patrick
Hohimer John P.
Sandia Corporation
Toatley , Jr. Gregory J.
LandOfFree
Integrated resonant micro-optical gyroscope and method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated resonant micro-optical gyroscope and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated resonant micro-optical gyroscope and method of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3597798