Solid type single polarization fiber and apparatus
US6970632B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2004 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Jun 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0281
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an outer dimension (d), and a cladding (50) surrounding the moat (40), the cladding (50) having a third refractive index (n3), wherein n1>n3>n2, a ratio of b/a is between 1.5 and 5.0, and a ratio of d/a is between 2.0 and 7.0. The fiber supports a single (one and only one) polarization within a Single Polarization Band (SPB). The fiber (20) may be coupled to optical components in apparatus where single polarization properties are desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.