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Related Concept Videos

Cascaded Op Amps01:16

Cascaded Op Amps

Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...

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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

Cascaded silicon micro-ring modulators for WDM optical interconnection.

Qianfan Xu, Brad Schmidt, Jagat Shakya

    Optics Express
    |June 17, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Cascaded silicon micro-ring modulators enable efficient WDM interconnection systems. This study demonstrates clean data transmission at 4 Gbit/s with negligible crosstalk, paving the way for high-performance optical networks.

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    Area of Science:

    • Photonics
    • Optical Communications
    • Integrated Optics

    Background:

    • Wavelength Division Multiplexing (WDM) is crucial for high-capacity optical networks.
    • Silicon micro-ring modulators are key components for WDM systems.
    • Efficient and low-crosstalk modulators are needed for advanced interconnections.

    Purpose of the Study:

    • To experimentally demonstrate cascaded silicon micro-ring modulators for WDM systems.
    • To evaluate the performance of these modulators at high data rates.
    • To assess optical inter-channel crosstalk.

    Main Methods:

    • Fabrication and integration of cascaded silicon micro-ring modulators.
    • Modulation of each ring modulator at 4 Gbit/s.
    • Measurement of eye-diagrams and optical inter-channel crosstalk.

    Main Results:

    • Clean eye-diagrams were observed for all four micro-ring modulators.
    • Data transmission at 4 Gbit/s per modulator was successfully demonstrated.
    • Optical inter-channel crosstalk was found to be negligible with 1.3-nm channel spacing.

    Conclusions:

    • Cascaded silicon micro-ring modulators are a viable key component for WDM interconnection systems.
    • The demonstrated performance supports high-speed, low-crosstalk optical data transmission.
    • This work contributes to the development of advanced integrated photonic devices for optical networks.