Communication light detecting device
US8213791B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 14, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Jun 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4259
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A communication light detecting device interconnecting light transmission paths and collocated therebetween, comprises: an optical coupling body including a core portion for photo coupling with the light transmission paths, and a light extracting portion for extracting a part of the communication light as a leakage light; and a light detecting portion having a light receiving member for receiving the leakage light. The light extracting portion is preferable to possess a lower refractive index than that of the core portion. Besides, the light extracting portion is preferable to include a light detecting use groove with a groove width of 50 μm or more and 140 μm or less formed by cutting and separating the core portion. Besides, the light extracting portion is preferable to be the optical coupling body in which outer diameter of the core portion is different from the outer diameter of a core of the light transmission path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.