Method and device for tunable optical filtering
US8095010B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2005 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Feb 15, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/021
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical device includes an optical splitter having an input port, a first output port, a second output port and a resonant structure including at least a resonator, the optical splitter being adapted to receive at the input port a WDM optical signal and to output at the first and second output ports, respectively, a first and a second portion of the optical signal, the second portion including the channels lying on a sub-grid of optical frequencies spaced by an integer multiple of the WDM frequency spacing; an optical combiner having a first input port, a second input port, an output port and adapted to receive at the first and second input ports, respectively, the first and the second portions and adapted to output them at said output port; a first optical path optically connecting the first output port of the optical splitter to the first input port of the optical combiner so as to propagate the first portion; a second optical path optically connecting the second output port of the optical splitter to the second input port of the optical combiner so as to propagate the second portion; and an optical filter optically coupled to the second optical path, wherein the optical combi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.