Patent ID: 11888537
Assignee: APRIORI NETWORK SYSTEMS, LLC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A secured fiber link system, comprising:
a spatially multiplexing optical fiber;
a transmit spatial multiplexer configured to couple each of a plurality of optical signals into a respective one of a plurality of distinct spatial paths of the spatially multiplexing optical fiber, each of the spatial paths being able to carry an optical signal;
at least one optically modulated transmit source coupled to the transmit spatial multiplexer so that an optically modulated signal supplied as an output from the at least one optically modulated transmit source is coupled by the transmit spatial multiplexer into one of the plurality of spatial paths of the spatially multiplexing optical fiber;
at least one optically modulated chaff source coupled to the transmit spatial multiplexer so that each optically modulated chaff signal supplied as an output from the at least one optically modulated chaff source is coupled by the transmit spatial multiplexer into a respective one of the plurality of spatial paths of the spatially multiplexing optical fiber that are other than the spatial path to which the at least one optically modulated transmit source is coupled, wherein at least one of the at least one optically modulated chaff source occupies substantially a same optical frequency range as at least one of the at least one optically modulated transmit source; and
a receive spatial multiplexer configured to extract at least one spatial path from the spatially multiplexing fiber;
wherein at least one of the at least one optically modulated chaff sources contains a data stream; and
wherein the data stream is pre-recorded and stored at the chaff source.