An all-optical regenerative wavelength multicasting scenario for differential phase shift keyed (DPSK) signal is experimentally demonstrated. This scheme is composed of a one-bit delay interferometer demodulation stage followed by a single semiconductor optical amplifier. The experimental results show that the input signal wavelength is simultaneously converted to six different wavelengths at 10 Gb/s with signal regeneration. The power penalties, for all different wavelengths, are less than −0.8 dB at 10−9 bit error rate (BER) level.
An optical code division multiple access (OCDMA) secure communications system scheme with rapid reconfigurable polarization shift key (Pol-SK) bipolar user code is proposed and demonstrated. Compared to fix code OCDMA, by constantly changing the user code, the performance of anti-eavesdropping is greatly improved. The Pol-SK OCDMA experiment with a 10 Gchip/s user code and a 1.25 Gb/s user data of payload has been realized, which means this scheme has better tolerance and could be easily realized.
By analyzing the characteristic of optical buffer device and traffic's self-similarity we put forward optimizing
configuration scheme for OPS node based on DLOB. According to configuring DLOB's loop length and the total
number of DLOBs, average delay and delay jitter can be reduced which is showed in simulation experiment.
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