1. BS EN IEC 61753-051-02. Fibre optic interconnecting devices and passive components. Performance standard. Part 051-02. Plug-receptacle style single-mode fibre fixed optical attenuators for category C. Controlled environments (23rd October 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗