Multi-wavelength channel transmission filter
US6097861A · kind A · utility
12Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jul 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29389
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved multi-wavelength channel transmission filter, by which it is possible to selectively and simultaneously separate multiple wavelength channel signals without any optical time delays among, different wavelength channels, includes one optical circulator with four terminal ports, one polarization beam splitter (PBS), one half-wave plate, and a number of Brag, gratings formed in an optical waveguide for reflection of multi-wavelength channels by combining the wavelength characteristic of each Bragg grating which is determined in accordance with the grating structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.