Optical waveguides – With optical coupler – Particular coupling function
Patent
1993-12-30
1995-05-16
Gonzalez, Frank
Optical waveguides
With optical coupler
Particular coupling function
385124, 359653, G02B 626
Patent
active
054168635
ABSTRACT:
In accordance with the invention, a mode-field transforming waveguide region comprise an elongated glass core surrounded by glass cladding wherein the normalized index differential between the cladding and the core (termed .DELTA.) varies along the length. Preferably the waveguide comprises an optical fiber having a hydrogen-loaded germanosilicate core. The variation of .DELTA. as a function of longitudinal distance can be effected by exposing the fiber to ultraviolet light and varying the dosage of exposure as a function of longitudinal distance.
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AT&T Corp.
Books Glen E.
Gonzalez Frank
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