Optical network including branch points featuring three interconnected bidirectional optical waveguides having free ends with reflectionless terminations
US5502586A · kind A · utility
5Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Jun 3, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0092
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A fiber-optic network has a branching net in which only three optical waveguides are interconnected at each of a plurality of active or passive branch points (A, B). The branch points are designed to permit bidirectional transmission in each of three paths. Subscriber facilities (F) are connected or connectable to the optical waveguides of the network at arbitrary points. To increase reliability, a fiber-optic ring main (50) is provided to which the ends of the optical waveguides forming a branching net are connectable via controllable optical switches (D).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.