Programmable optical add/drop device
US6285478A · kind A · utility
19Cited by
24References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1998 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Sep 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0024
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical wavelength division multiplex (WDM) demultiplexer can be provided in substantially passive form. In one embodiment a wavelength filter separates alternate channels to provide a first output containing even-numbered channels and a second output containing odd-numbered channels, each output having channels separated by a bandwidth twice the channel separation bandwidth of the original WDM signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.