Method of making an article comprising an optical waveguide
US5235659A · kind A · utility
99Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | May 5, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12038
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Unexpectedly large normalized refractive index changes (.DELTA.>10.sup.-5, but possibly even larger than 10.sup.-3) can be obtained in SiO.sub.2 -based optical waveguides (fiber or planar waveguides) by a treatment that comprises exposing at least a portion of the waveguide at a temperature of at most 250.degree. C. to H.sub.2 (partial pressure greater than 1 atmosphere), and irradiating at least a part of the exposed portion with actinic (typically UV) radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.