
In Figure
H
, the receiver circuitry is
connected to the FTDI Friend which is connected
to my host computer running a terminal
program. My LED transmitter is on the left, with
the red LED pressed into the fiber-optic receiver
module. The resulting message is displayed
on the terminal program on the computer
(Figure
I
). Congratulations, you have optically
exfiltrated your secret!
FURTHER EXPLORATION IN
PHOTONIC EXFILTRATION
This project is a basic implementation to get you
started. If you’re interested in having a longer-
range optical communication system and/or the
capability to capture and analyze modulation
schemes other than NRZ, then consi ...