Fiber optic polarization controller
US4389090A · kind A · utility
70Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1980 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Sep 4, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fiber optic device for controlling the state of polarization of light. In one embodiment, a strand of fiber optic material is bent into a generally planar coil of relatively tight radius to stress the material and form a birefringent medium having principal axes which are rotated to control the polarization of light passing through the strand. In a second embodiment, one portion of a fiber optic strand is twisted about its axis to change the polarization, and a second portion of the strand is formed into a coil which is free to change in radius without additional twisting as the first portion is twisted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.