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Column-row addressing of thermo-optic phase shifters for controlling large silicon photonic circuits

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Abstract
We demonstrate a time-multiplexed row-column addressing scheme to drive thermo-optic phase shifters in a silicon photonic circuit. By integrating a diode in series with the heater, we can connect $N \times M$ heaters in an matrix topology to $N$ row and $M$ column lines. The heaters are digitally driven with pulse-width modulation, and time-multiplexed over different channels. This makes it possible to drive the circuit without digital-to-analog converters, and using only $M+N$ wires. We demonstrate this concept with a $1 \times 16$ power splitter tree with 15 thermo-optic phase shifters that are controlled in a $3 \times 5$ matrix, connected through 8 bond pads. This technique is especially useful in silicon photonic circuits with many tuners but limited space for electrical connections.
Keywords
Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Optical phase shifters, optical waveguide components, silicon on insulator technology digital control, time division multiplexing, thermooptic effects, integrated optoelectronics

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MLA
Alves Júnior, Antônio Ribeiro, et al. “Column-Row Addressing of Thermo-Optic Phase Shifters for Controlling Large Silicon Photonic Circuits.” IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, vol. 26, no. 5, 2020.
APA
Alves Júnior, A. R., Declercq, S., Khan, U., Wang, M., Van Iseghem, L., & Bogaerts, W. (2020). Column-row addressing of thermo-optic phase shifters for controlling large silicon photonic circuits. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 26(5).
Chicago author-date
Alves Júnior, Antônio Ribeiro, Sibert Declercq, Umar Khan, Mi Wang, Lukas Van Iseghem, and Wim Bogaerts. 2020. “Column-Row Addressing of Thermo-Optic Phase Shifters for Controlling Large Silicon Photonic Circuits.” IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 26 (5).
Chicago author-date (all authors)
Alves Júnior, Antônio Ribeiro, Sibert Declercq, Umar Khan, Mi Wang, Lukas Van Iseghem, and Wim Bogaerts. 2020. “Column-Row Addressing of Thermo-Optic Phase Shifters for Controlling Large Silicon Photonic Circuits.” IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 26 (5).
Vancouver
1.
Alves Júnior AR, Declercq S, Khan U, Wang M, Van Iseghem L, Bogaerts W. Column-row addressing of thermo-optic phase shifters for controlling large silicon photonic circuits. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS. 2020;26(5).
IEEE
[1]
A. R. Alves Júnior, S. Declercq, U. Khan, M. Wang, L. Van Iseghem, and W. Bogaerts, “Column-row addressing of thermo-optic phase shifters for controlling large silicon photonic circuits,” IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, vol. 26, no. 5, 2020.
@article{8660114,
  abstract     = {We demonstrate a time-multiplexed row-column addressing scheme to drive thermo-optic phase shifters in a silicon photonic circuit. By integrating a diode in series with the heater, we can connect $N \times M$ heaters in an matrix topology to $N$ row and $M$ column lines. The heaters are digitally driven with pulse-width modulation, and time-multiplexed over different channels. This makes it possible to drive the circuit without digital-to-analog converters, and using only $M+N$ wires. We demonstrate this concept with a $1 \times 16$ power splitter tree with 15 thermo-optic phase shifters that are controlled in a $3 \times 5$ matrix, connected through 8 bond pads. This technique is especially useful in silicon photonic circuits with many tuners but limited space for electrical connections.},
  articleno    = {6100708},
  author       = {Alves Júnior, Antônio Ribeiro and Declercq, Sibert and Khan, Umar and Wang, Mi and Van Iseghem, Lukas and Bogaerts, Wim},
  issn         = {1077-260X},
  journal      = {IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS},
  keywords     = {Electrical and Electronic Engineering,Atomic and Molecular Physics,and Optics,Optical phase shifters,optical waveguide components,silicon on insulator technology digital control,time division multiplexing,thermooptic effects,integrated optoelectronics},
  language     = {eng},
  number       = {5},
  pages        = {8},
  title        = {Column-row addressing of thermo-optic phase shifters for controlling large silicon photonic circuits},
  url          = {http://dx.doi.org/10.1109/jstqe.2020.2975669},
  volume       = {26},
  year         = {2020},
}

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