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US 2004/0175074 A1Published application
Device for coupling light into the fiber
OwnerDouglas Raymond Dykaarinventor
Life of this patent
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Abstract
An optical source is provided to the side of a fiber. The fiber is a single mode fiber which has a core and a cladding. The Bragg grating is written into the core at a low angle. Light emitted from the optical source is index-match coupled into the cladding by using an index matched element. Then, light is coupled into the fiber core along its length.
Claims18
A device for coupling light comprising:
- a single mode optical fiber having a core and a cladding, said core including a low angle, tilted grating;
- and
- an optical source, which is optically coupled to the fiber, for directing light through the side surface of the fiber so as to couple the light into the core.
Dependencies are inferred from the claim text.