Photo-sensitive fiber
US6221555A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 6, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Oct 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Abnormal losses outside a reflection band attributable to a mismatch of core field diameters are suppressed. A photo-sensitive fiber comprising a core 1 and a cladding having a cladding inner layer and a cladding outer layer formed in this order around the core, in which at least the core is photo-sensitive to form a grating. The core and cladding inner layer include a photo-sensitive dopant for increasing the refractive index. The core additionally includes a first non-photo-sensitive dopant for increasing the refractive index and the cladding inner layer additionally includes a second non-photo-sensitive dopant for creasing the refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.