Integrated optical circuit element and method of making the same
US4707059A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1983 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/124
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This specification discloses an integrated optical circuit element comprising a substrate, a wave guide layer formed on the substrate and having a refractive index higher than that of the substrate, and a photocoupler which is a diffraction grating pattern formed in the wave guide layer and having the same refractive index as that of the substrate. The specification also discloses a method of making an integrated optical circuit element which comprises the steps of forming a mask of diffraction grating pattern on a substrate, forming a layer having a refractive index higher than that of the substrate in a portion of the substrate which is not covered by the mask, and removing the mask.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.