Method of making dielectric optical waveguides
US4181515A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1977 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Oct 21, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S117/919
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An opto-electronic element consists of a dielectric optical waveguide having a single crystal core of meta-nitroaniline. The element is made by feeding molten meta-nitroaniline into a hollow fibre along which a temperature gradient exists. Nucleation sets in at one end of the fibre and the temperature gradient is altered to promote crystal growth along the fibre. The element can be used as a polarizer, in isolators, harmonic generators or mixers. The action of the device depends on either the non-linear optical properties of the meta-nitroaniline or the optical anisotropy of the meta-nitroaniline. To make a polarizer the meta-nitroaniline core is surrounded by a cladding having a refractive index lying midway between two of the refractive indices of the meta-nitroaniline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.