Multimedia Encrypted Experiment of Reconfigurable Wavelength Hopping Protection against Eavesdroppers over a Wireless Wavelength Division Multiplexing Network

To enhance the video transmission security of a physical layer over wireless optical communication, an switch configured in front arrayed waveguide grating (AWG) router is proposed for implementing reconfigurable wavelength hopping configuration division multiplexing network protection against eavesdropping. In practical experiment AWG/optical-switch-based random scheme, simulated pseudorandom noise generator algorithm was designed and embedded into master‐slave microprocessor (e.g., Arduino chips) to generate time series electrical signals triggering switch. The path randomly varied change space AWG router. Therefore, varying wavelengths were assigned as carriers authorized users realize scheme. An spectrum analyzer oscilloscope used monitoring measurement. experimental results indicated that eavesdroppers cannot accurately interpret analog, digital, audio, uncompressed high-definition multimedia interface 10 MHz, 1 MHz, 3.125 MHz (encoded 6.25 MHz), 1.485 GHz, respectively. According results, unauthorized are characterized by large difference retrieved energy signal, which ensures safety privacy scheme communication network.