Branching unit for an optical fiber transmission system
US6005996A · kind A · utility
3Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Oct 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/808
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A branching unit for an optical fiber transmission system has a pair of inputs/outputs for receiving an end of a different section of trunk cable of the type having an electrical conductor and one or more pairs of optical fibres. A switching circuit (8) is effective to selectively route power between the electrical conductors (54, 56) of each trunk section or via an earth return (72) in response to a supervisory signal provided on the trunk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.