Electro-optic channel waveguide
US5006285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1988 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Jul 28, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A three-dimensional electro-optic waveguide is formed as a channel in a structure made of an organic non-linear optical polymer. A poling electric field is maintained in a portion of the polymer structure defining the channel, and the polymer structure is heated above the glass-transition temperature to enable dipolar moieties of the polymer to become aligned by the poling field. Heating continues until the dipolar moieties are sufficiently aligned to produce a higher index of refraction in the channel portion than in adjacent cladding portions of the polymer structure for at least one polarization of optical radiation propagating through the channel. The poling field is maintained as the polymer structure is then cooled below glass-transition temperature, thereby preserving alignment of the dipolar moieties (and hence preserving the differential index of refraction) in the channel portion of the polymer structure. Guided modes of optical radiation of at least one polarization can be supported in the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.