Optical add-drop multiplexer (OADM) is one of the key components for wavelength division multiplexing (WDM) system.

光分插复用器(OADM)是波分复用(WDM)系统中的关键器件之一。

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The safety CH_4 optical-fiber sensor is studied based on the optoelectronic measurement theory and wavelength-division multiplexer technology.

利用光电检测理论和波分复用技术，研制出安全型光纤瓦斯传感器。

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