Secured fiber link system
US12316386B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2023 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Dec 19, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A fiber link system and method for masking signals on a fiber link system. The system includes sending a desired sequence of information in the form of a true optical signal that is typically intended to be transferred between legitimate users at both ends of a link over a center core of a the spatially multiplexing optical fiber that is a multicore fiber. Optical chaff signals, or subterfuge signals, are sent alongside the true signal in at least one, non-center core of the spatially multiplexing optical fiber to mask such true signal in the fiber cable from intruders tapping into the fiber cable. At least one of the chaff signals occupies substantially a same optical frequency range as the true signal. The optical signals may be coupled into the multiplexing optical fiber using a transmit spatial multiplexer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.