A brief review of design and simulation methodology in silicon photonics

Sun, Chonglei; Du, Liuge; Zhao, Jia

doi:10.26599/tst.2021.9010038

Cited by 5 publications

(1 citation statement)

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“…Silicon based photonics is a rapidly emerging means in the field of high-speed optical communication [1][2][3][4][5]. As the electrical interconnect has the bottleneck for improving the performance of power consumption, working bandwidth and signal latency, optical interconnect based on silicon photonics is taken as a promising solution to this problem [6,7]. A key component in the silicon photonics is the optical modulator [8,9].…”

Section: Introductionmentioning

confidence: 99%

Large wavelength bandwidth Mach-Zehnder modulator based on optical intensity equalization structure

Liu²,

Ma³

et al. 2022

Front. Phys.

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In this paper, we propose a large wavelength bandwidth Mach-Zehnder modulator based on light intensity equalization structure. The modulator is designed into a symmetric structure to increase the optical operating bandwidth. Besides, two auxiliary MZIs are connected to the respective phase shifters of the main modulator to balance the optical intensity in them. Compared with a conventional Mach-Zehnder modulator, this design has a larger optical operating bandwidth over 56.1 nm. Besides, the maximum extinction ratio of this modulator is 26.2dB, which is 12 dB higher than that of a conventional one. The dynamic extinction ratios at speed of 40Gbps are 4.10 dB in the wavelength of 1530nm and 4.02 dB in the wavelength of 1560 nm respectively. The 3 dB electro-optical bandwidth of this modulator under different voltages are almost consistent with the performance of the conventional one. All of these prove that this structural design can effectively increases the performance of Mach-Zehnder modulators.

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Section: Introductionmentioning

confidence: 99%

Large wavelength bandwidth Mach-Zehnder modulator based on optical intensity equalization structure

Liu²,

Ma³

et al. 2022

Front. Phys.

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Physics to system-level modeling of silicon-organic-hybrid nanophotonic devices

Moridsadat,

Tamura,

Chrostowski

et al. 2024

Sci Rep

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The continuous growth in data volume has sparked interest in silicon-organic-hybrid (SOH) nanophotonic devices integrated into silicon photonic integrated circuits (PICs). SOH devices offer improved speed and energy efficiency compared to silicon photonics devices. However, a comprehensive and accurate modeling methodology of SOH devices, such as modulators corroborating experimental results, is lacking. While some preliminary modeling approaches for SOH devices exist, their reliance on theoretical and numerical methodologies, along with a lack of compatibility with electronic design automation (EDA), hinders their seamless and rapid integration with silicon PICs. Here, we develop a phenomenological, building-block-based SOH PICs simulation methodology that spans from the physics to the system level, offering high accuracy, comprehensiveness, and EDA-style compatibility. Our model is also readily integrable and scalable, lending itself to the design of large-scale silicon PICs. Our proposed modeling methodology is agnostic and compatible with any photonics-electronics co-simulation software. We validate this methodology by comparing the characteristics of experimentally demonstrated SOH microring modulators (MRMs) and Mach Zehnder modulators with those obtained through simulation, demonstrating its ability to model various modulator topologies. We also show our methodology's ease and speed in modeling large-scale systems. As an illustrative example, we use our methodology to design and study a 3-channel SOH MRM-based wavelength-division (de)multiplexer, a widely used component in various applications, including neuromorphic computing, data center interconnects, communications, sensing, and switching networks. Our modeling approach is also compatible with other materials exhibiting the Pockels and Kerr effects. To our knowledge, this represents the first comprehensive physics-to-system-level EDA-compatible simulation methodology for SOH modulators.

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