Wavelength dispersion compensating filter
US6847759B2 · kind B2 · utility
3Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2003 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Aug 3, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29353
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A 2-input, 2-output optical circuit is constructed by serially connecting two or more Mach-Zehnder interferometers possessing a structure in which two waveguides are embraced by two couplers. One output and one input of the two 2-input, 2-output optical circuit are connected by an optical propagation path to thereby construct a loop circuit. The waveguides of the Mach-Zehnder interferometers as well as the loop circuit are each provided with an optical path-length adjustment portion, thereby constructing a wavelength dispersion compensating filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.