Optical waveguide channel device
US6587629B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2000 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | May 22, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12195
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an optical waveguide channel device equipped with multiple cores, the distances between cores at the entry edge must be large in order to cause a laser beam to enter each core. On the other hand, the distances at the exit edge must be small. Therefore, the core must have a curved area at which the axis is curved. Further, in order to make it easier to match the spot of the entering beam and the core, the core diameter of the optical waveguide channel device and the beam spot diameter of the entering light are made large. However, in a core having a multi-mode curved area, high-order light is easily excited at the curved area. Therefore, the curved area from the entry edge to the exit edge of each core is made to have a single mode. Consequently, exit light having an essentially Gaussian profile may be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.