Arrayed waveguide grating type optical multiplexer/demultiplexer
US6671433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Sep 6, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/1228
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An arrayed waveguide grating type optical multiplexer/demultiplexer according to the present invention multiplexes or demultiplexes the lights of desired wavelength without depending on the outside environmental temperature thereby realizing a high quality optical wavelength division multiplexing communications. A waveguide forming part 10 comprising connecting in series of one or more optical input waveguides 12, a first slab waveguide 13, an arrayed waveguide 14 consisted of a plurality of channel waveguides 14a arranged side by side with a length different from each other, a second slab waveguide 15 and a plurality of optical output waveguides 16 arranged side by side is formed on a substrate 11. At the output ends of one or more optical input waveguides 12 is provided, for example, a trapezoidal type waveguide 5. The trapezoidal type waveguide 5 is formed by providing a width larger than that of the optical input waveguide or the optical output waveguide to be connected and enlarging its width increasingly toward the corresponding slab waveguide. The optical multiplex/demultiplex function of the arrayed waveguide grating type optical multiplexer/demultiplexer is designed by a o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.