OA：Optical Amplifier，光放大器。关联词：EDFA、OFA、OSΑ
OADM：Optical Add-Drop Multiplexer，光分插复用设备
OBS：Optical Burst Switching，光突发交换。关联词：OPS、OWS
OCC：Cross Connecting Cabinet for Communication Optical Cable，通信光缆交接箱
ODB：Optical Fiber Cable Distribution Box，光缆分纤箱
ODF：Optical fibres Distribution Frame，光纤配线架。关联词：MDF、DDF
OF：Optical fibres，光导纤维
OFA：Optical Fiber Amplifier，光纤放大器
OI：Optical Internet，光互联网
OMAN：Optical Metropolitan Area Network，光城域网
OMDF：Optical Main Distribution Frame，光纤总配线架。关联词：MDF、ODF、DDF
OPGW：Optical Ground Wire，光纤复合地线。关联词：OPPC
OPPC：Optical Phase Conductor，光纤复合相线。关联词：OPGW
OPS：Optical Packet Switching，光分组交换。关联词：OBS、OWS
OSΑ：Optical Semiconductor Amplifier，半导体光放大器
OTDM：Optical Time Division Multiplex，光时分复用
OTDR：Optical Time Domain Reflectometer，光时域反射仪
OTN：Optical Transport Network，光传送网络
OTU：Optical Transponder Unit，光转换器单元
OVPN：Optical Virtual Private Network，光虚拟专用网
OWS：Optical Wavelength Switching，光波长交换。关联词：OBS、OPS
OXC：Optical Cross-Connect，光交叉连接
