Comparison of thermo-optic phase-shifters implemented on CUMEC silicon photonics platform

Liu, Shengping; Tian, Ye; Lu, Youxi; Feng, Junbo

doi:10.1117/12.2587413

Cited by 8 publications

(2 citation statements)

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“…Orange data shows the heating time constant, and blue data shows the cooling time constant. A. Masood [6], S. Liu [8], Q. Fang [9], Z. Lu [10], D. Celo [11], K. Murray [12]. More examples are available in [13][14][15].…”

Section: Silicon Photonic Heatersmentioning

confidence: 99%

A Critical Analysis of the Thermo-Optic Time Constant in Si Photonic Devices

Coenen,

Kim,

Oprins

et al. 2024

Photonics

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The use of integrated heaters is widespread in silicon photonics for waveguide temperature control. The dynamical behavior of the heaters is important for determining their usefulness for certain applications. There exists ambiguity in the literature when it comes to reporting the thermo-optic time constants of Si photonic devices. Many studies report devices with different heating and cooling times without providing an explanation to this phenomenon. In this paper, a comprehensive theoretical framework is developed for interpreting experimental results. This framework is developed for interferometric devices (Mach–Zehnder-based) and resonant devices (rings). With this framework, the impact of measurement conditions on the obtained thermo-optic time constant can be simulated, and we provide an explanation to the observed difference between heating and cooling time constants. We also provide guidelines on how to disentangle optical non-linearities from the pure thermal response, which should be useful in for future reporting of thermo-optic time constants.

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Section: Silicon Photonic Heatersmentioning

confidence: 99%

A Critical Analysis of the Thermo-Optic Time Constant in Si Photonic Devices

Coenen,

Kim,

Oprins

et al. 2024

Photonics

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“…Optical beam steering is an important technology utilized by many applications, including optical wireless communication systems [1], LiDAR systems [2], remote sensing [3], and medical imaging [4]. Phased arrays represent the most advanced beam steering technique, widely used in radio frequency (RF) systems.…”

Section: Introductionmentioning

confidence: 99%

Vertical-cavity surface-emitting phase shifter

Almutairi

Smolyaninov

Ingram

et al. 2021

Light-Emitting Devices, Materials, and Applications XXV

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This study proposes a novel technique for a 2D beam steering system using hybrid plasmonic phase shifters with a cylindrical configuration in a 2D periodic array suitable for LIDAR applications. A nanoscale VCSEP design facilitates a sub-wavelength spacing between individual phase shifters, yielding an expanded field of view and side lobes suppression. The proposed design includes a highly doped sub-micron silicon pillar covered by a thin layer of nonlinear material and an additional conductive metal layer. Characterization of a single VCSEP demonstrated a Free Spectral Range (FSR) of 53.28 ± 2.5 nm and a transmission variation of 3dB, with VπL equal to 0.075 V-mm.

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Thermo-optic phase shifters based on silicon-on-insulator platform: state-of-the-art and a review

Liu¹,

Feng²,

Tian³

et al. 2022

Front. Optoelectron.

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Silicon photonic platforms offer relevance to large markets in many applications, such as optical phased arrays, photonic neural networks, programmable photonic integrated circuits, and quantum computation devices. As one of the basic tuning devices, the thermo-optic phase shifter (TOPS) plays an important role in all these applications. A TOPS with the merits of easy fabrication, low power consumption, small thermal time constant, low insertion loss, small footprint, and low crosstalk, is needed to improve the performance and lower the cost of the above applications. To meet these demands, various TOPS have been proposed and experimentally demonstrated on different foundry platforms In this paper, we review the state-of-the-art of TOPS, including metal heater, doped silicon, silicide, with silicon substrate undercut for heat insulation, folded waveguide structure, and multi-pass waveguide structure. We further compare these TOPSs and propose the directions of the future developments on TOPS. Graphical abstract

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Comparison of thermo-optic phase-shifters implemented on CUMEC silicon photonics platform

Cited by 8 publications

References 0 publications

A Critical Analysis of the Thermo-Optic Time Constant in Si Photonic Devices

A Critical Analysis of the Thermo-Optic Time Constant in Si Photonic Devices

Vertical-cavity surface-emitting phase shifter

Thermo-optic phase shifters based on silicon-on-insulator platform: state-of-the-art and a review

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