Planar optical waveguide
US5930439A · kind A · utility
25Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12169
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A planar optical waveguide comprises at least two cladding layers on a substrate with at least one core layer disposed between the cladding layers. The overcladding layer of the two layers is doped in order to produce a thermal coefficient of expansion close to or equal to that of the substrate in order to reduce the polarisation sensitivity of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.