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Information Encryption Based on Using Arbitrary Two-Step Phase-Shift Interferometry
Deterministic Phase-Encoded Encryption Arbitrary Two-Step Phase-Shift Interferometry Lenticular Lens Array
2013/1/30
A deterministic phase-encoded encryption system is proposed. A lenticular lens array (LLA) sheet with a particular LPI (lenticular per inch) number is chosen as a modulator (key) instead of the random...
This work investigates the effect of phase fluctuation averaging on phase fluctuation induced by intrachannel four-wave mixing (IFWM) in highly dispersed differential phase-shift keying transmission s...
Bit-error Rate Performance of Nyquist Wavelength-Division Multiplexed Quadrature Phase-Shift Keying Optical Signals
Coherent communications Multiplexing Optical communications
2015/5/20
We measure bit-error rates of polarization-multiplexed Nyquist-WDM QPSK signals,which have rectangular spectral shapes and channel spacing equal to the symbol rate. The spectral efficiency of 4 bit/s/...
Tunable Free Space Optical Delay Interferometer for Demodulation of Differential Phase Shift Keying Signals
Phase modulation Interferometry
2015/6/4
With a continuously tunable free space optical delay interferometer and direct detection D(Q)PSK signals can be received at varying symbol rates or under optimized conditions. The in-terferometer’s ph...
Reducing the Impact of Intrachannel Nonlinearities By Pulse-Width Optimisation in Multi-level Phase-Shift-Keyed Transmission
Intrachannel Nonlinearities Pulse-Width Optimisation Multi-level Phase-Shift-Keyed Transmission
2015/7/20
We investigate the reduction in the duty-cycle for M-phase-shift-keyed transmission, demonstrating performance improvement in the range of 2-8 dB in nonlinear threshold (NLT) due to intrachannel-four ...