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概述了国内外最新用于全光密集波分复用（D－WDM）系统中的光学器件的研究进展，这些器件包括光发射／光接收器、光复用／解复用器、光滤波器、光放大器及高速传输系统中的光色散补偿器等。
The latest research progress of optical devices used in all-optical dense wavelength division multiplexing (D-WDM) systems is summarized. These devices include optical transmitter / receiver, optical multiplexer / demultiplexer, optical filter, Optical amplifiers and high-speed transmission systems such as light dispersion compensator.