N-input receiver: RFoG OBI mitigation with retransmission
US11342994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2021 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Apr 6, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multimode combiner or coupler (MMC) may combine the inputs into a larger core multimode fiber. The multimode combiner may be combined with a re-transmitting laser for detecting and re-transmitting signals. Thus, the multi-mode combiner may detect and combine input signals, and then retransmit the detected, combined signal. The detection can be implemented with multiple single mode fibers to small single mode detectors or a multi-mode coupler with a larger multi-mode detectors. In embodiments of the MMC, a bi-directional optical splitter/combiner includes a transmitter for re-transmitting an RF signal received at a receiver, a first wave division multiplexer (WDM) combiner combining the output of the first transmitter in an upstream direction to a downstream signal in a downstream direction, and a second WDM combiner combining split downstream signals in the downstream direction with upstream signals received via at least two optical fiber inputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.