Broadband unpolarized light source
US4556293A · kind A · utility
13Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | May 2, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Broadband, unpolarized light is produced by coupling a birefringent optical fiber to a light emitting device, such as a superluminescent diode, which is capable of emitting broadband, partially polarized light. The optical fiber is made sufficiently long to provide an optical differential path length between its birefringent axes which is longer than the coherence length of the light emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.