Fiber optic coupling device and method of constructing such a device
US4730887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jan 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fiber optic coupler for coupling 2.sup.n inputs and one output, n being an integer, comprising: two halves of a solid part formed with 2.sup.n -1 identical convex grooves parallel to a midplane and to a fractioning plane along which the part was separated into two halves. A plurality of optical fiber lengths are located each in one of the grooves, the halves and fibers are cut along a plane transverse to the midplane and fractioning plane at a depth selected for eliminating half of the cross-section of the fibers in the midplane. An auxiliary part formed with 2.sup.n -1 grooves having the same distribution as the 2.sup.n -1 grooves in the halves is retained in abutment against the halves, end portions of the fiber lengths being located in the grooves for optical coupling each with the end surfaces of two lengths, whereby 2.sup.n -1 elementary 2-to-1 elementary couplings are achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.