一种基于全息光处理器的可调光编码/解码器设计

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.这种新结构的可调光编码/解码器减小了硬件实现的复杂性,降低了成本和功耗,便于集成.

A NEW SCHEME 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 is a low cost fabrication and 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.The planar holographic optical processor consists of a two port.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.