CWDM-based radiation-tolerant high-speed optical links

Abstract The consolidation of the Large Hadron Collider (LHC) Beam Instrumentation requires the digitisation of the analogue signals from the detectors within the radiation areas. Subsequently, the digital data are transmitted via the existing fibre plant to the back-end area for processing. In order to manage the increased volume of data with the existing infrastructure, the proposed Coarse Wavelength Division Multiplexing (CWDM) link project merges four optical carrier signals of different wavelengths into a single optical fibre through two high-speed radiation-tolerant optical twin transmitters. This paper outlines the project's current status and radiation tolerance of the constituent components.