Patent ID: 7755027

Claim:
A secure data transmission cable assembly for electronically transmitting secure data in a secure manner between remote locations comprising; a longitudinal reinforcing member having a degree of stiffness extending generally centrally of said cable; a plurality of buffer tubes surrounding said reinforcing member: at least one communication fiber carried In each of said buffer tubes for transmitting secure data; a plurality of sensor fibers surrounding said buffer tubes for detecting unauthorized activity relative to said communication fibers and preventing access to said communication fibers, said sensor fibers adapted end arranged to receive optical pulse signals which are transmitted along said sensors fibers whereby reflected signals of said pulse signals are reflected back along said sensor fibers; said buffer tubes being wound in helices having windings continuously laid. in a first direction for mechanically isolating said communication fibers; and said sensor fibers being wound in helices having windings continuously laid about said buffer tube helices, said helices of said sensor fibers being wound in a second direction opposite to the first direction of said buffer tube helices; and, an out protective layer surrounding said sensor fibers said outer protective layer Including a plurality of armor protection wires wrapped about said buffer tubes in a spiral; whereby said reflected signals may be analyzed to determine the nature and location of any unauthorized activity and an alarm notice communicated to security personnel in order to respond to the activity and protect the secure data.