Reflection monitor optical fiber coupler manufacturing system and method
US5329600A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 2, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Jun 2, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2835
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an optical fiber coupler fabricating process where couplers are successively formed by heating, elongating and cutting a plurality of long optical fibers, light is led into the first end of the fiber, reflected at the second end of the coupler, and the reflected light is monitored by photodetectors. In this manner, an exact splitting ratio can be obtained. Techniques for minimizing measuring errors caused by the inter-reflected-light interference, the inter-Rayleigh-scattering-light interference, and the interference between the reflected light and the Rayleigh scattering light, while exploiting the advantageous feature of the reflection monitor method that the fiber connection work for each fiber coupler fabrication is not required are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.