Photonic bandgap fiber and fiber amplifier
US8564877B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Aug 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photonic bandgap fiber includes a core of a solid material; a first cladding provided around the core; a low-refractive-index region provided in a part of a core vicinity portion of the first cladding and whose average refractive index is lower than that of the core; and a periodic structure region that is arranged in another part of the core vicinity portion of the first cladding which is made of a great many high-refractive-index portions whose refractive index is higher than that of the first cladding arranged in a periodic structure. According to the invention, it is possible to provide a photonic bandgap fiber which, when arranged in a double-clad structure, enables pump light to efficiently pump signal light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.