Method and apparatus for checking continuity of optic transmission
US4994675A · kind A · utility
66Cited by
10References
23Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 28, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Apr 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for checking continuity of fiber optic links from source to receiver before enabling the source delivers full power so as to thereby prevent eye damage to personnel and provide a supervisory signal to the system user that the link elements are intact and functioning. The apparatus includes a transmitter, a receiver and a detector for detecting that an optical transmission between the transmitter and receiver can be effected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.