Optical waveguide device having a light absorber for split out modes
US9857534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2013 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Aug 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/212
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide device includes: a mode splitter including a main waveguide in which lights can be propagated in at least two propagation modes with different propagation orders and a subsidiary waveguide which includes a coupling section disposed in parallel with the main waveguide at a certain distance away from the main waveguide so as to constitute a directional coupler and is capable of splitting at least one propagation mode out of the two or more propagation modes from the main waveguide. Also, ncore/ncladding which is a refractive index ratio between a core and a cladding which constitute the main waveguide and the subsidiary waveguide is in a range of 101% to 250%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.