Langmuir-Blodgett films in a waveguide optical pick-up head using Mach-Zehnder interferometers
US5276743A · kind A · utility
9Cited by
9References
13Claims
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Key dates
| Filing date | Mar 1, 1993 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Mar 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/027
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
An integrated optical head has first and second channels forming an interferometer. A electro-optically phase-shiftable waveguide channel is associated with one of the first and second channels of the interferometer for electro-optical phase shifting of one channel with respect to the other channel. The interferometer is formed on a silicon substrate and the phase-shiftable waveguide channel is formed of Langmuir-Blodgett thin-film electro-optic polymers described on the silicon substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.