Wavelength independent coupler and method of manufacture thereof
US4822126A · kind A · utility
8Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | May 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2835
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a single mode fiber optic coupler which is wavelength independent and a method of manufacture thereof. The coupler comprises two single mode fibers positioned side by side which are fused in a manner such that they taper down into a substantially circular cross section coupling region wherein the two cores of the fibers run therethrough. In its most preferred aspect to achieve wavelength independence, the fibers are selected to have indexes of refraction at the core which are sufficiently different such that uniform coupling throughout a broad range of light wavelengths is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.