Multi-band arrayed waveguide grating
US6678446B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/12019
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An arrayed waveguide grating router (AWGR) comprises sets of output waveguides for a number of bands. Angular separation of adjacent output waveguides is relatively small for adjacent output waveguides. within a band and significantly larger for adjacent output waveguides belonging to different bands. In specific embodiments the output waveguides are arranged into at least two bands, each band comprising at least two adjacent waveguides. Each band is used in conjunction with an input waveguide specific to the particular band. AWGRs according to the invention may be made so that the passbands from a plurality of output waveguides fall on a wavelength grid or a frequency grid. Dummy waveguides may be included for ease of fabrication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.