Single-fiber bidirectional optical ring system, method for controlling single-fiber bidirectional optical ring system, and central station
US12184332B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2023 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Jul 14, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A single-fiber bidirectional optical ring system includes: a central station; slave stations; and a network which connects the central station and the slave stations in a ring shape by optical fibers. The central station includes: a first single-fiber bidirectional optical transceiver connected in a clockwise direction of the network, which outputs a downstream optical signal of a second wavelength and receives an upstream optical signal of a first wavelength; a second single-fiber bidirectional optical transceiver connected in a counterclockwise direction of the network, which outputs a downstream optical signal of the second wavelength and receives an upstream optical signal of the first wavelength; and a first time synchronization control circuit that adjusts timings at which the downstream optical signals of the second wavelength are outputted, and causes the first and second single-fiber bidirectional optical transceivers to output the downstream optical signals of the second wavelength in different time slots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.