Optical coupling circuit
US6161965A · kind A · utility
2Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | May 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4214
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A low-cost optical coupling circuit that enables high-efficiency coupling between an optical transmission line 4 and a photodetector element 2 is provided with an optical transmission line 4 and a photodetector element 2, both located on a substrate 1. The substrate 1 propagates light and receives emitted light L2 from the optical transmission line 4. A filler material 8 having a refractive index that is either equivalent to or lower than the refractive index of the core of the optical transmission line 4 fills the space between the optical transmission line 4 and photodetector element 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.