Optical fiber coupler and method of making
US4733931A · kind A · utility
14Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3885
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical signal coupler has a pair of graded index lenses joined at a common face by a semi-reflective film (e.g., dichroic coating). Opposite sides of the lens system are provided with a pair of fibers having their ends at predetermined points such that a light signal applied to either of the fibers has a first part which reflects from the lens coating onto the other fiber on the same side of the lens and a second part which passes through the lens system to exit via one of the remaining fibers at the opposite lens side. The entire lens and four fiber waveguides are formed into a unitary relationship by encapsulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.