Optical waveguides – With optical coupler – Input/output coupler
Patent
1989-12-22
1994-04-12
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Input/output coupler
G02B 634
Patent
active
053033167
ABSTRACT:
An optical device having a substrate with a waveguide layer on a surface thereof and a grating in the waveguide. The grating has a period such as to deflect light passing along the waveguide out of the optical device. The angle at which the light is emitted from the waveguide can be varied by varying the index of refraction of the material of the waveguide under the grating. This can be achieved by applying a voltage across the waveguide.
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G. Evans et al. "Two-Dimensional Coherent Laser Arrays Using Grating Surface Emissions", IEEE Journal of Quantum Electronics, vol. 25, No. 6, Jun. 1989.
B. Broberg et al. "Widely Tunable Active Bragg Reflector Integrated Lasers In GaAsP-InP" Applied Physics Letter, vol. 52 No. 16 Apr. 18, 1988 pp. 1285-1287.
Bovernick Rodney B.
Burke William J.
David Sarnoff Research Center Inc.
Wise Robert E.
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