Optical fiber with tunable birefringence using pressurized liquid capillaries
US7489847B1 · kind B1 · utility
1Cited by
2References
5Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 24, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Jul 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/024
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A single-mode optical fiber segment incorporating liquid-filled holes parallel to the core that are sealed at each end. Heating the liquid produces stress in the fiber and thereby increases the birefringence level. Alternatively the holes may be filled and sealed at a temperature lower than the temperature at which the fiber will be operated, the temperature difference determining the stress level for given hole characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.