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Integrated resonant micro-optical gyroscope and method of fabrication

Patent ·
OSTI ID:908250
 [1];  [2];  [1];  [1]
  1. Albuquerque, NM
  2. Sandia Park, NM
+ Show Author Affiliations
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.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM
Sponsoring Organization:
United States Department of Energy
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
7,106,448
Application Number:
10/780,799
OSTI ID:
908250
Country of Publication:
United States
Language:
English

References (6)

Monolithically integrated resonator microoptic gyro on silica planar lightwave circuit journal January 2000
Developments in Pursuit of a Micro-Optic Gyroscope report March 2003
Low loss Si_3N_4–SiO_2 optical waveguides on Si journal January 1987
Recent developments in silicon optoelectronic devices conference August 2002
Silicon nitride films on silicon for optical waveguides journal January 1977
Single polarization optical waveguide on silicon journal March 1991

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