Anti-torsion solid-core polarization-maintaining photonic crystal fiber based on anisotropy of stress distribution
US11598915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2021 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Aug 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02304
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An anti-torsion solid-core polarization-maintaining photonic crystal fiber includes a cladding having an inner layer arranged around the core and an outer layer between the inner layer and the outer wall of the cladding. The inner layer has multi-layer air holes used to construct optical properties and two micron-size air holes arranged along the x-axis extending in the center producing form birefringence. The outer layer includes multi-layer air holes arranged radially along the y-axis. The size and arrangement of the multi-layer air holes in the outer layer cause the bending stiffness of the photonic crystal fiber along the x-axis to be different from that along the y-axis. While meeting the requirements of the optical properties of the fiber, the photonic crystal fiber possesses an anti-torsion ability due to the anisotropy of stress distribution in the radial direction, thereby reducing the non-reciprocal phase difference generated by the magneto-optic Faraday Effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.