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The analytical expression of bit error probability in a balanced differential phase-shift keying (DPSK) optical receiver considering nonlinear phase noise and EDFA ASE noise is given, which is very useful to estimate the performance of DPSK balanced and unbalanced receiver in optical communication system. Through analysis, if only nonlinear phase noise is considered, both the balance and unbalanced...
A spatial modulation method for electronic speckle patterns is presented. Carrler fringes are produced by object tilting and the phase field of deformation is demodulated by Fourier transform. The principle is discussed. The system and some typical experimental results are offered. The results prove that by using object tilting method speckle patterns can be modulated very well and the out-of displacement...
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