Fiber devices based on fiber squeezer polarization controllers
US6493474B1 · kind B1 · utility
31Cited by
10References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jan 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0134
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved polarization control method and apparatus is provided. The described invention uses super-polished squeezing surfaces to apply pressure against a polyimide coated fiber thereby minimizing micro-bending effects that cause losses in the fiber. Special control circuitry has also been designed to maintain a driving source of piezo-electrics that control the squeezing surfaces at a resonant frequency, thereby minimizing the voltages needed to drive the piezo-electrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.