it can write a letter at least bidi fiber Dripping Systematically Viscous
BiDi Transceiver - Thomas-Krenn-Wiki
Differences Between SFP, BiDi SFP and Compact SFP
What is BIDI SFP Module? Why use BIDI SFP? | FS Community
a Pair of Gigabit Ethernet Bidi Media Converter, SingleMode Single LC Fiber to Ethernet RJ45 Converter for 10/100/1000Base-Tx to 1000Base-LX, UL Certified, up to 20-km
BiDi Transceiver OverviewFiber Optic Components
Introduction About BiDi SFP and BiDi Fiber
MS (Distribution) UK Ltd. - Ubiquiti U Fiber Single-Mode BiDi 10G Module - 20 pack