COMPARISON OF SWITCHING PROPERTIES BETWEEN 10 GB/S RZ AND NRZ SIGNAL FORMAT UTILIZING 4 × 4 OPTICAL CROSSPOINT SWITCH MATRIX

摘要

We experimentally demonstrate optical packet switching with less than 8 ns switching speed for a 10 Gb/s return-to-zero (RZ) and non-return-to-zero (NRZ) payload using a 4 × 4 optical crosspoint switch (OXS) matrix. Good waveforms and less than 0.8 dB power penalty show that RZ coding is better than NRZ. The wavelength dependence of the OXS is also investigated in terms of the receiver sensitivity and the output OSNR. Very good switching performance can be achieved from 1535 to 1561 nm. Our results suggest that the OXS can be a promising device for switching future high speed impulse coded signals.