Method for manufacturing a cascading optical space switch
US5709980A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1994 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Feb 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2077
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a cascaded optical space switch and a cascaded optical space switch manufactured with this method are shown being made of many optical branches produced on a single substrate. Here a method is used for growing active, i.e., controllable light amplifying or light absorbing waveguide areas, which can produce locally restrictable different layer thicknesses and/or material compositions of the grown active layers, during the same operation. The number and location of active (1, 3) and passive (2, 4) waveguide areas can be determined by the configuration of areas (M), e.g., masked with SiO.sub.2, prior to the actual growth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.