Demonstration of modulating retro-reflection free-space optical transmission using 80 Gb/s Pol-MUX QPSK signal in simulated atmosphere environment

摘要

The authors experimentally demonstrate a modulating retro-reflector based on electro-optical in-phase quadrature modulator and test it in an atmospheric cell simulated atmosphere environment by using 80 Gb/s polarisation-multiplexing quadrature phase-shift keying (Pol-MUX QPSK) signals. At the BER of 1 x 10(-3), the power penalties of the x- and y-polarisation signals are both <1.1 dB when the temperature difference in the atmospheric cell is <250 degrees C.