Method of limiting coupling losses between monomode optical fibers using a piece of multimode optical fiber
US5337380A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Sep 15, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/262
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a method of limiting coupling losses between a monomode optical fiber (2) having a mode diameter of W.sub.o, and an optical system (1) having a mode diameter W'.sub.o that is different from W.sub.o, said method being characterized by the fact that a piece (4) of multimode fiber is welded onto the end of said monomode fiber, said piece of multimode fiber having a length in the range 0.1 mm to 5 mm, and having the same cladding outside diameter as said monomode fiber, a mode diameter substantially equal to W'.sub.o, and an index difference .delta.n lying in the range 5.times.10.sup.-3 to 50.times.10.sup.-3, the weld creating an adiabatic cone in the region where the cores meet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.