Petrillo Keith G, Foster Mark A
Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA.
Opt Express. 2013 Jan 14;21(1):508-18. doi: 10.1364/OE.21.000508.
We experimentally demonstrate full simultaneous error-free demultiplexing of a 160-Gb/s OTDM data stream to 16x10-Gb/s WDM channels in a single nonlinear optical device. A temporal Fourier processor based upon a four-wave mixing (FWM) time lens is used to perform the demultiplexing operation. The FWM pump pulses are chirped such that they temporally overlap to allow for continuous operation; a necessary feature for full demultiplexing. We identify the fundamental challenges of operating in this continuous regime and characterize their impact on the system performance. We determine the main performance impairments to be crosstalk from adjacent WDM channels and crosstalk arising from non-degenerate FWM amongst the OTDM signal and the temporally overlapping pump pulses.
我们通过实验证明，在单个非线性光学器件中，可将160 Gb/s的光时分复用（OTDM）数据流完全同时无误地解复用为16个10 Gb/s的波分复用（WDM）通道。基于四波混频（FWM）时间透镜的时间傅里叶处理器用于执行解复用操作。FWM泵浦脉冲经过啁啾处理，使其在时间上重叠，以实现连续运行；这是完全解复用的必要特性。我们确定了在这种连续模式下运行的基本挑战，并描述了它们对系统性能的影响。我们确定主要的性能损伤为相邻WDM通道的串扰以及OTDM信号与时间上重叠的泵浦脉冲之间非简并FWM产生的串扰。
