WDM channel insertion
US5786914A · kind A · utility
5Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Oct 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4246
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A channel insertion filter for a WDM system is provided by an optical waveguide Mach Zehnder comprising a pair of 3dB couplers interconnected by a pair of interference arms in which are created a pair of Bragg reflectors. These reflectors are partially reflecting at the channel insertion wavelength so that some of the light of the associated channel transmitter is transmitted by them to provide a feedback control loop error signal for regulating the emission wavelength of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.