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Related Experiment Video

Updated: Aug 10, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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Ultra-compact silicon photonics highly dispersive elements for low-latency signal processing.

Saket Kaushal, Anthony Roberge, Raman Kashyap

    Optics Express
    |February 14, 2023
    PubMed
    Summary

    We developed a novel on-chip phase filter for group-velocity dispersion (GVD) compensation. This technology significantly shortens device length and processing latency for telecommunication signals.

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    Area of Science:

    • Photonics and Optical Engineering
    • Materials Science and Engineering
    • Telecommunications Engineering

    Background:

    • On-chip optical group-velocity dispersion (GVD) is crucial for low-latency signal processing.
    • Current methods like linearly chirped waveguide Bragg gratings (LCWBGs) require long devices, hindering on-chip integration and increasing latency.

    Purpose of the Study:

    • To introduce a novel design strategy for on-chip GVD compensation.
    • To enable ultra-low latency and compact device footprints for signal processing applications.

    Main Methods:

    • Utilized a discretized and bounded spectral phase filtering process to emulate continuous GVD.
    • Fabricated a silicon-on-insulator (SOI) platform WBG-based on-chip phase filter.
    • Demonstrated GVD compensation for NRZ and PAM4 signals up to 24 GBd.

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    Related Experiment Videos

    Last Updated: Aug 10, 2025

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
    12:19

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

    Published on: April 4, 2017

    8.5K
    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.1K
    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

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    Main Results:

    • Achieved GVD compensation over a 31.12-km fiber link with a 4.1-mm device.
    • The device was at least 5x shorter than equivalent LCWBGs.
    • Reduced processing latency to approximately 100 ps.
    • Showcased potential for THz bandwidth extension via phase-only sampling.

    Conclusions:

    • The novel WBG-based phase filter enables compact, low-latency on-chip GVD compensation.
    • This approach is a promising solution for all-optical analog signal processing.
    • Facilitates integration of advanced optical functionalities onto a chip.