Method of making an index grating in an optical fiber, and a quasi-distributed array of sensors formed in said fiber
US5313538A · kind A · utility
6Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1991 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Oct 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02095
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An array of sensors quasi-distributed in an optical fiber (10), the sensors being delimited along the fiber by intermode coupling zones which are made by exposing the optical fiber (10) to a laser beam (16) through a mask (18) having periodic spatial transmission tuned to the difference between the propagation constants of the two modes to be coupled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.