Fiber optic depolarizer for optical time domain reflectometer and fiber optical communication systems
US5432637A · kind A · utility
14Cited by
5References
2Claims
0Family size
Inventor
Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2786
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for depolarizing light in fiber optics, comprises of a pair of fiber optic collimators and plurality of contiguous slabs of linear birefringent plates arranged in a stack forming a parallel slab. The optical axes of said linear birefringent plates are approximately 45 degrees with respect to each other. Thicknesses of said linear birefringent plates are such that their individual polarization mode delays exceed coherence time of a beam defined by an optical source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.