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Analog I/Q FIR filter in 55-nm SiGe BiCMOS for 16-QAM optical communications at 112 Gb/s

Michiel Verplaetse (UGent) , Joris Lambrecht (UGent) , Michael Vanhoecke (UGent) , Laurens Breyne (UGent) , Hannes Ramon (UGent) , Piet Demeester (UGent) and Guy Torfs (UGent)
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  • ATTO (A new concept for ultra-high capacity wireless networks.)
Abstract
We propose a novel implementation of a complex analog equalization filter for the compensation of frequency-dependent variations in coherent optical links. The analog compensation filter can be used in coherent-lite optical communication links where digital signal processing (DSP) is removed to limit the complexity and power consumption. In these links, the filter can compensate for electrical bandwidth limitations and distortion introduced by chromatic dispersion in the fiber. The complex filter is implemented by combining four distributed analog finite-impulse response (FIR) filters to obtain the necessary response. The filter delays are implemented using active delay cell structures to create a compact solution. The analog filter is implemented in a 55-nm BiCMOS technology and consumes 185-mW core power for five complex filter taps. Performance is evaluated using the S-parameter measurements, noise and linearity measurements, and real-time system experiments using 112-Gb/s 16-QAM-modulated signals.
Keywords
FEEDFORWARD EQUALIZER, DESIGN, TRANSMISSION, Finite impulse response filters, Optical fiber communication, Equalizers, Dispersion, Optical polarization, Optical transmitters, Delays, Analog equalization, coherent, data center, dispersion, electronic compensation of dispersion (EDC), multiple-input-multiple-output

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Citation

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MLA
Verplaetse, Michiel, et al. “Analog I/Q FIR Filter in 55-Nm SiGe BiCMOS for 16-QAM Optical Communications at 112 Gb/S.” IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 55, no. 7, Ieee-inst Electrical Electronics Engineers Inc, 2020, pp. 1935–45, doi:10.1109/JSSC.2020.2987732.
APA
Verplaetse, M., Lambrecht, J., Vanhoecke, M., Breyne, L., Ramon, H., Demeester, P., & Torfs, G. (2020). Analog I/Q FIR filter in 55-nm SiGe BiCMOS for 16-QAM optical communications at 112 Gb/s. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 55(7), 1935–1945. https://doi.org/10.1109/JSSC.2020.2987732
Chicago author-date
Verplaetse, Michiel, Joris Lambrecht, Michael Vanhoecke, Laurens Breyne, Hannes Ramon, Piet Demeester, and Guy Torfs. 2020. “Analog I/Q FIR Filter in 55-Nm SiGe BiCMOS for 16-QAM Optical Communications at 112 Gb/S.” IEEE JOURNAL OF SOLID-STATE CIRCUITS 55 (7): 1935–45. https://doi.org/10.1109/JSSC.2020.2987732.
Chicago author-date (all authors)
Verplaetse, Michiel, Joris Lambrecht, Michael Vanhoecke, Laurens Breyne, Hannes Ramon, Piet Demeester, and Guy Torfs. 2020. “Analog I/Q FIR Filter in 55-Nm SiGe BiCMOS for 16-QAM Optical Communications at 112 Gb/S.” IEEE JOURNAL OF SOLID-STATE CIRCUITS 55 (7): 1935–1945. doi:10.1109/JSSC.2020.2987732.
Vancouver
1.
Verplaetse M, Lambrecht J, Vanhoecke M, Breyne L, Ramon H, Demeester P, et al. Analog I/Q FIR filter in 55-nm SiGe BiCMOS for 16-QAM optical communications at 112 Gb/s. IEEE JOURNAL OF SOLID-STATE CIRCUITS. 2020;55(7):1935–45.
IEEE
[1]
M. Verplaetse et al., “Analog I/Q FIR filter in 55-nm SiGe BiCMOS for 16-QAM optical communications at 112 Gb/s,” IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 55, no. 7, pp. 1935–1945, 2020.
@article{8670410,
  abstract     = {We propose a novel implementation of a complex analog equalization filter for the compensation of frequency-dependent variations in coherent optical links. The analog compensation filter can be used in coherent-lite optical communication links where digital signal processing (DSP) is removed to limit the complexity and power consumption. In these links, the filter can compensate for electrical bandwidth limitations and distortion introduced by chromatic dispersion in the fiber. The complex filter is implemented by combining four distributed analog finite-impulse response (FIR) filters to obtain the necessary response. The filter delays are implemented using active delay cell structures to create a compact solution. The analog filter is implemented in a 55-nm BiCMOS technology and consumes 185-mW core power for five complex filter taps. Performance is evaluated using the S-parameter measurements, noise and linearity measurements, and real-time system experiments using 112-Gb/s 16-QAM-modulated signals.},
  author       = {Verplaetse, Michiel and Lambrecht, Joris and Vanhoecke, Michael and Breyne, Laurens and Ramon, Hannes and Demeester, Piet and Torfs, Guy},
  issn         = {0018-9200},
  journal      = {IEEE JOURNAL OF SOLID-STATE CIRCUITS},
  keywords     = {FEEDFORWARD EQUALIZER,DESIGN,TRANSMISSION,Finite impulse response filters,Optical fiber communication,Equalizers,Dispersion,Optical polarization,Optical transmitters,Delays,Analog equalization,coherent,data center,dispersion,electronic compensation of dispersion (EDC),multiple-input-multiple-output},
  language     = {eng},
  number       = {7},
  pages        = {1935--1945},
  publisher    = {Ieee-inst Electrical Electronics Engineers Inc},
  title        = {Analog I/Q FIR filter in 55-nm SiGe BiCMOS for 16-QAM optical communications at 112 Gb/s},
  url          = {http://dx.doi.org/10.1109/JSSC.2020.2987732},
  volume       = {55},
  year         = {2020},
}

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