Optical time domain reflectometer having pre and post front panel connector testing capabilities
US5062704A · kind A · utility
29Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Apr 25, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved optical time domain reflectometer, OTDR, has a reference fiber interposed between an optical coupler and a front panel connector for acquiring a reference backscatter level that is independent from a fiber under test. The reference level is used to determine the quality of the front panel connection between the OTDR and the fiber under test and for verifying and adjusting transmitter and receiver circuitry in the OTDR. The reference fiber also allows the acquisition of front panel connector reflection data when a Bragg Cell is used as the optical coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.