Optical waveguides – With optical coupler – Input/output coupler
Patent
1997-01-08
2000-01-18
Ngo, Hung N.
Optical waveguides
With optical coupler
Input/output coupler
385 32, 385129, G02B 634
Patent
active
060163755
ABSTRACT:
Light is coupled out of a first mono-mode optical waveguide such as an optical fiber an into another single mode waveguide through a substantially planar slab waveguide. The first mono-mode optical waveguide has a grating impressed within which has refractive index perturbations that reflect predetermined wavelengths of incident light out of a portion of a side of the optical waveguide adjacent the grating; The slab planar waveguide has an end optically coupled to the portion of the first mono-mode optical waveguide, for guiding light coupled out of the side of the waveguide, and for maintaining a uni-phase wavefront of said light by having a response that confines the light to a single mode in one dimension, and multi-mode in another dimension and allows at least a portion of the light to converge.
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Farries Mark
Hill Kenneth O.
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