Polarizer and method
US4386822A · kind A · utility
53Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1980 |
| Grant date | Jun 7, 1983 |
| Priority date | — |
| Expiry date | Oct 10, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and method for changing the degree of polarization of light in a waveguide such as an optical fiber. A portion of the cladding of a strand of fiber optic material is removed, and a body of birefringent material is mounted in the area in which the material has been removed in close proximity to the core of the fiber. The birefringent material modifies the propagation of two polarization modes within the fiber in such manner that one of the modes is coupled to a bulk wave mode and removed from the guide, while the second mode excites no bulk waves and remains guided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.