基于HOP的可调光编码／解码器的研究

提出了一种基于全息光处理器的可调光编码/解码器的实现方案。全息光处理器可以在空间进行编/解码，每个通信网络单元可以采用任意速率的数字或模拟的调制信号，它非常适合于多媒体的通信网络环境，通过对全息光处理器的折射率大小和位置的控制，当一个输入光脉冲经过光处理器中具有特定折射率的空间位置后，便可在处理器的输出端口得到合适的输出信号。本文给出了这种基于全息光处理器的可调光编码/解码器的仿真实验，结果是可行的，与以前文献中提出的结构相比，减小了硬件实现的复杂性，降低了成本和功耗，便于集成。

Study of Tunable Optical Encoder/Decoder Based on Holographic Optical Processor

A new tunable optical encoder/decoder structure based on holographic optical processor is proposed.The planar holographic optical processor that is a low cost fabrication and that is spatial domain encoding and decoding.The modulating signal for each ONU can take on any form (digital or analog),any rate,and any shape.So this is very suitable for multimedia environment.An impulsive signal entering the input port and interacting with the index grating at special position produces an output signal.Control of the spacing and amplitude of index variations provides required temporal response.For the proposed tunable optical encoder/decoder structure,simulation experiments have been accomplished and a part of typical results are given in this paper.In contrast to the previous structures reported in the literature,the new structure has greatly reduced the hardware complexity,the cost and the power loss.It is easy to integrate.