Radiation-hard miniature optical engine with high bandwidth
Abstract
Future silicon trackers will be operated in an intense radiation environment and require large volumes of data to be transmitted off detector. In addition, the optical modules must be of low mass in order to limit multiple scattering and nuclear interactions that would degrade the overall performance of the detector. Here, we present a miniature optical engine that satisfies these constraints. The optical engine consists of an ASIC driving a VCSEL (Vertical Cavity Surface Emitting Laser) array in an optical package. Two ASICs are designed to operate a 12-channel VCSEL array at 1.28 or 5.12 Gb/s per channel, which yields a total data rate of up to 60 Gb/s. The core transistors are fabricated in a 65 nm CMOS process which enhance the radiation-hardness. Each channel contains equalizer (CTLE) and clock-data recovery circuits (CDR) so that the ASIC can restore the highly distorted electrical signal after propagating through several meters of cables of small diameter. The equalizer, CDR, and VCSEL driver are configured via a digital I2C chip interface with triple redundant memory to mitigate single event upset (SEU) effects. The bias and modulation currents are controlled by a digital-to-analog converter (DAC). We present the design of the circuit togethermore »
- Authors:
-
- The Ohio State Univ., Columbus, OH (United States). Dept. of Physics
- Universität Siegen (German). Dept. Physik
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); German Federal Ministry of Education and Research (BMBF)
- OSTI Identifier:
- 1851536
- Alternate Identifier(s):
- OSTI ID: 1776929
- Grant/Contract Number:
- SC0011726; 05H15PSCA9
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 978; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; instruments & instrumentation; nuclear science & technology; physics; optical link; HL-LHC upgrade; VCSEL array; radiation hardness
Citation Formats
Tar, B., Gan, K. K., Buchholz, P., Heidbrink, S., Stroh, W., Winter, J., and Ziolkowski, M. Radiation-hard miniature optical engine with high bandwidth. United States: N. p., 2020.
Web. doi:10.1016/j.nima.2020.164377.
Tar, B., Gan, K. K., Buchholz, P., Heidbrink, S., Stroh, W., Winter, J., & Ziolkowski, M. Radiation-hard miniature optical engine with high bandwidth. United States. https://doi.org/10.1016/j.nima.2020.164377
Tar, B., Gan, K. K., Buchholz, P., Heidbrink, S., Stroh, W., Winter, J., and Ziolkowski, M. Fri .
"Radiation-hard miniature optical engine with high bandwidth". United States. https://doi.org/10.1016/j.nima.2020.164377. https://www.osti.gov/servlets/purl/1851536.
@article{osti_1851536,
title = {Radiation-hard miniature optical engine with high bandwidth},
author = {Tar, B. and Gan, K. K. and Buchholz, P. and Heidbrink, S. and Stroh, W. and Winter, J. and Ziolkowski, M.},
abstractNote = {Future silicon trackers will be operated in an intense radiation environment and require large volumes of data to be transmitted off detector. In addition, the optical modules must be of low mass in order to limit multiple scattering and nuclear interactions that would degrade the overall performance of the detector. Here, we present a miniature optical engine that satisfies these constraints. The optical engine consists of an ASIC driving a VCSEL (Vertical Cavity Surface Emitting Laser) array in an optical package. Two ASICs are designed to operate a 12-channel VCSEL array at 1.28 or 5.12 Gb/s per channel, which yields a total data rate of up to 60 Gb/s. The core transistors are fabricated in a 65 nm CMOS process which enhance the radiation-hardness. Each channel contains equalizer (CTLE) and clock-data recovery circuits (CDR) so that the ASIC can restore the highly distorted electrical signal after propagating through several meters of cables of small diameter. The equalizer, CDR, and VCSEL driver are configured via a digital I2C chip interface with triple redundant memory to mitigate single event upset (SEU) effects. The bias and modulation currents are controlled by a digital-to-analog converter (DAC). We present the design of the circuit together with the results of the simulations and preliminary measurements.},
doi = {10.1016/j.nima.2020.164377},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 978,
place = {United States},
year = {Fri Jul 24 00:00:00 EDT 2020},
month = {Fri Jul 24 00:00:00 EDT 2020}
}
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