Bidirectional optical wavelength multiplexer-demultiplexer
US4708425A · kind A · utility
37Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1984 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Oct 9, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25891
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A bidirectional optical wavelength multiplexing-demultiplexing device comprises a self-focusing lens having an index gradient and situated between the transmission fibre and filtering means and of which the length is such that the spatial separation between the outgoing wavelengths and the return wavelength is maximum, which permits decoupling of the return channel from the outgoing channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.