PoS - Proceedings of Science
Volume 282 - 38th International Conference on High Energy Physics (ICHEP2016) - Detector: R&D and Performance
10 Gb/s Radiation-Hard Parallel Optical Engine
K.K. Gan,* H.P. Kagan, R.D. Kass, J. Moore, D.S. Smith, P. Buchholz, S. Heidbrink, M. Vogt, M. Ziolkowski
*corresponding author
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Pre-published on: February 15, 2017
Published on: April 19, 2017
We have designed and fabricated a compact array-based optical engine for transmitting data at 10 Gb/s. The device consists of a 4-channel ASIC driving a VCSEL (Vertical Cavity Surface Emitting Laser) array in an optical package. The ASIC is designed using only core transistors in a 65 nm CMOS process to enhance the radiation-hardness. The ASIC contains an 8-bit DAC to control the bias and modulation currents of the individual channels in the VCSEL array. The DAC settings are stored in SEU (single event upset) tolerant registers. Several devices were irradiated with 24 GeV/c protons and the performance of the devices is satisfactory after the irradiation.
DOI: https://doi.org/10.22323/1.282.0279
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