Reconfigurable optical filtering apparatus and a drop-and-insert multiplexer incorporating such apparatus
US6292605A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Feb 11, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0209
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In particular for selectively dropping and/or inserting channels of a wavelength division multiplex, while minimizing losses, the apparatus includes n stop filters and optical switching means provided with n+1 inlet ports of ranks 0 to n, and n+1 outlet ports of ranks 1 to n+1, as well as a set of waveguides making it possible to couple each outlet port selectively to one of said inlet ports of lower rank. Each filter is provided with first and second opposite ports coupled respectively to an associated outlet port and to an associated inlet port of the same rank. Application to optical transmission, in particular for performing routing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.