Combined signal responses in an optical time-domain reflectometer
US10305586B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Mar 29, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/071
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical time-domain reflectometer (OTDR) is provided. The OTDR emits a first optical signal that is an impulse optical signal having a non-zero power during a first period of time, where the first period of time is shorter than a period of time necessary for the first optical signal to traverse a length of an optical fiber under test. The OTDR emits a second optical signal that is an impulse optical signal having a non-zero power during a second period of time longer than a period of time necessary for the second optical signal to traverse the length of the optical fiber. The OTDR receives data representative of a third and fourth optical signals that are reflections of the first and second optical signals, respectively, by the optical fiber and generates an optical time-domain reflectometry signal based at least in part on the third and fourth optical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.