Ultrafast electro-optical disk modulators for logic, communications, optical repeaters, and wavelength converters Article Swipe

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Dusan Gostimirovic , Francesco De Leonardis , Richard Soref , Vittorio M. N. Passaro , Winnie N. Ye ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1364/oe.400716

We propose a U-shaped pn junction in a silicon-on-insulator microdisk resonator to effectively double the junction–mode overlap in the state-of-the-art, vertical pn junction microdisk electro-optical (EO) modulators. The U-shaped pn junction promotes the maximum overlap between the junction depletion zone and the whispering gallery optical mode in the microdisk. By fully depleting the p region of the npn-sequenced U-junction, the capacitance is reduced below 3 fF, which significantly improves the speed and power performance. In this work, we implement the high-efficiency, depleted U-junction design to maximize the operating bandwidth of EO modulators, EO logic elements, EO 2 × 2 switches for wavelength-division cross-connects, 2 × 2 reconfigurable optical add–drop multiplexers, optical-to-electrical-to-optical (OEO) repeaters-with-gain, OEO wavelength converters, and 2 × 2 optical–optical logic gates. These devices all operate in the 7.6-to-50 GHz bandwidth range with ultralow energy consumption between 0.4 and 9.8 fJ/bit. By using CMOS-compatible materials and fabrication-feasible design dimensions, our proposed high-performance devices offer a promising potential in next-generation, high-volume electro-optical communications and computing circuits.

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Electrical Engineering

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Optoelectronics Multiplexer Optical switch Materials science Bandwidth (computing) Ultrashort pulse Resonator Electronic circuit Optics CMOS Multiplexing Electrical engineering Computer science Physics Laser Telecommunications Engineering

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Type: article
Language: en
Landing Page: https://doi.org/10.1364/oe.400716
OA Status: gold
Cited By: 12
References: 30
Related Works: 10
OpenAlex ID: https://openalex.org/W3044608098

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DOI: https://doi.org/10.1364/oe.400716

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Title: Ultrafast electro-optical disk modulators for logic, communications, optical repeaters, and wavelength converters

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Type: article

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Language: en

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Publication year: 2020

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Publication date: 2020-07-25

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Authors: Dusan Gostimirovic, Francesco De Leonardis, Richard Soref, Vittorio M. N. Passaro, Winnie N. Ye

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Landing page: https://doi.org/10.1364/oe.400716

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Concepts: Optoelectronics, Multiplexer, Optical switch, Materials science, Bandwidth (computing), Ultrashort pulse, Resonator, Electronic circuit, Optics, CMOS, Multiplexing, Electrical engineering, Computer science, Physics, Laser, Telecommunications, Engineering

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Cited by: 12

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Related works (count): 10

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