Tunable single-channel dispersion compensator for high-speed optical systems
US7486851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jun 4, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29398
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
One embodiment of the present invention includes a plurality of first optical elements and a second optical element optically coupled to one another in cascaded fashion. Each first optical element has a group delay response characterized by a first period such that only one group delay peak occurs within a first channel. By contrast, the second optical element has a group delay response characterized by a second period, which is less than the first period, such that more than one group delay peak occurs within the first channel. The preferred embodiment uses cascaded GT etalons to provide the desired group delay responses. One advantage of the present invention is that the passband of the dispersion compensator is increased relative to prior art designs without increasing insertion losses. Alternatively, the same passband common in prior art designs may be achieved with fewer GT etalons, thereby reducing insertion losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.