Bi-directional compact coarse wavelength division multiplexing having a dispersionless bi-directional tap
US9590759B1 · kind B1 · utility
8Cited by
8References
15Claims
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Key dates
| Filing date | Jul 16, 2014 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0305
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A bi-directional multiplexer/demultiplexer comprises a common port, an upgrade (UPG) port, a plurality of input/output ports, a plurality of wavelength division multiplexing (WDM) filters arranged in a zig-zag fashion, and a single bi-directional tap. The single bi-directional tap directs a tapped signal to a demultiplexing tap port in demultiplexing mode and a multiplexing tap port in multiplexing mode. The bi-directional tap may be a thin-film tap filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.