OPTICAL TIME DOMAIN REFLECTOMETER WHICH MEASURES AN OPTICAL FIBER WITH DIFFERENT WAVELENGTHS ACCORDING TO AN ORDER AND COLLECTIVELY DISPLAYS WAVEFORM DATA AND A LIST OF EVENTS FOR EACH WAVEFORM IN THE SAME SCREEN
US6611322B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2001 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M17/027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light pulse generator is connected with one end of an optical fiber which selectively emits light pulses of a plurality of wavelengths to the optical fiber. A photodetector outputs a signal corresponding to the strength of the light reflected from the optical fiber. A storage unit stores the signal output from the photodetector for each wavelength. A processor determines the position and characteristic of an event based on the waveform data for each wavelength stored in the storage device. A display device has first and second display areas. A display controller allows the first display area to display the waveform data for each wavelength stored in the storage unit in a discriminable manner, and allows the second display area to display a list of positions and characteristics of events for each wavelength determined by the processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.