Silicon photonic, rad hard, Wavelength Domain Multiplexed data readout

by Evan Chansky (UCSB)

Wednesday 16 Mar 2022, 12:00 → 13:00 US/Pacific

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Abstract: Future high energy physics experiments will require high bandwidth readout of detector signals to data storage capable of enduring high total ionizing doses (TID) of radiation. Silicon Photonic (SiPh) Wavelength Division Multiplexing (WDM) is a cost, space, and power efficient advancement over electrical ICs by replacing many RF cables with a single pair of fibers, but full link solutions have not yet been proven at such high TIDs. Though currently under-explored, various mechanisms for hardening SiPh modulators are presented and compared including: foundry process, physical dimensions, doping levels, bias operation, and temperature. Key metrics and test plans for upcoming irradiation at LBL are shown, and integration with the RD53 ASIC is proposed for full readout of detector signals.