Method of making an article comprising an optical component, and

Details Method of making an article comprising an optical component, and Method of making an article comprising an optical component, and

1993-01-28

1994-02-15

Ullah, Akm E.

Optical waveguides

Optical fiber waveguide with cladding

With graded index core or cladding

65 1, 430 56, G02B 600

Patent

active

052874273

ABSTRACT:
Unexpectedly large normalized refractive index changes (.DELTA.>10.sup.-5, but possibly even larger than 10.sup.-3) can be obtained in oxide glass, e.g., high-silica glass, by a treatment that comprises exposing at least a portion of the glass at a temperature of at most 250.degree. C. to H.sub.2 or D.sub.2 (partial H.sub.2 or D.sub.2 pressure greater than 1 atmosphere), and irradiating at least a part of the exposed portion with actinic (typically UV) radiation. The method can be used to make optical components that comprise a region (or regions) of raised refractive index, e.g., an in-line refractive index grating in an optical waveguide, a planar optical waveguide, or a phase grating.

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