Optical domain digital pulse switching
US5307428A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3519
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical apparatus including a first optical coupling having a first and a second pair of optical communication ports in which substantially equal portions of an optical signal received at a port of one pair of ports are coupled to each port of the other pair of ports; an optical waveguide optically coupling the second pair of ports such that an optical signal leaving either one of the second pair of ports in a first polarization state; a second optical coupling for coupling an optical signal at a second wavelength to the optical waveguide so as to propagate along at least a portion of it in one direction only; and first and second polarizing beam splitters optically coupled to a respective one of the first pair of ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.