Fibre optic interconnecting devices and passive components - Performance standard - Part 053-2: Non-connectorized single-mode fibre, electrically controlled, variable optical attenuator for category C - Controlled environments (IEC 61753-053-2:2014); German version EN 61753-053-2:2014
纤维光学互连器件和无源元件.性能标准.第053-2部分:C类非连接单模光纤电控可变光衰减器.受控环境(IEC 61753-053-2-2014);德文版EN 61753-053-2:2014