Semiconductor laser/optical fiber coupling device
US5416869A · kind A · utility
21Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Mar 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4207
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a semiconductor laser device used as an optical time domain reflectometer, a polarizer is inserted in the path of the laser light. The plane of polarization of the polarizer is aligned to the plane of polarization of the emitted laser light, and the polarizer transmits the emitted laser light without attenuation. A reflected laser light from an optical fiber under test is a non-polarized light and receives a substantial attenuation by the polarizer. Thus, problems associated with reradiation echoes are prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.