Secure communication alarm system
US5455698A · kind A · utility
41Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1989 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Dec 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/85
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A secure fiber optic communication that is based on physical properties of light propagating through a Sagnac interferometer in combination with optical power alarms. These alarms are then used to alert users to intrusion and to shut down communications to avoid compromising data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.