Metropolitan area network using low insertion loss optical add-drop multiplexers
US6587237B1 · kind B1 · utility
3Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2000 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Apr 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0213
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A Metropolitan Area Network (MAN) is disclosed that is comprised of a central node, an optical fiber, a first low insertion loss Optical Add-Drop Multiplexer (O-ADM), a second low insertion loss O-ADM, and a third low insertion loss O-ADM. The first, second, and third O-ADMs are coupled to the optical fiber and configured to drop wavelengths from an optical signal. The first, second, and third O-ADMs each have an insertion loss of less than approximately 1.00 dB. The low insertion loss O-ADMs create an efficient MAN that can grow much larger than current MANs in the absence of optical line amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.