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Related Concept Videos

MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...

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Updated: Jun 20, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Optical-fiber phase modulator with enhanced modulation efficiency.

M N Zervas, I P Giles

    Optics Letters
    |September 12, 2009
    PubMed
    Summary
    This summary is machine-generated.

    A new optical-fiber phase modulator uses piezoelectricity for enhanced performance. It offers improved phase modulation and stability, outperforming existing designs.

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    Quasi-light Storage for Optical Data Packets
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    Published on: February 6, 2014

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    Last Updated: Jun 20, 2026

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    Area of Science:

    • Photonics
    • Materials Science
    • Optical Engineering

    Background:

    • Optical-fiber phase modulators are crucial components in various photonic systems.
    • Existing modulators can suffer from thermal drift, polarization modulation, and transducer variability.
    • Enhancing modulator performance is key for advanced optical communication and sensing.

    Purpose of the Study:

    • To introduce a novel piezoelectrically driven optical-fiber phase modulator.
    • To demonstrate its low thermal drift, minimum polarization modulation, and immunity to transducer variations.
    • To validate a theoretical model predicting the modulator's performance.

    Main Methods:

    • Development of a novel optical-fiber phase modulator utilizing piezoelectric actuation.
    • Experimental characterization of thermal drift, polarization modulation, and transducer stability.
    • Comparison with a wraparound fiber modulator at resonance.
    • Theoretical modeling and validation against experimental results.

    Main Results:

    • The novel modulator exhibits low thermal drift and minimal polarization modulation.
    • It demonstrates robustness against variations in piezoelectric transducer characteristics.
    • Experimental performance is accurately predicted by the theoretical model.
    • A significant phase-modulation enhancement was observed at resonance compared to a wraparound design.

    Conclusions:

    • The developed piezoelectrically driven optical-fiber phase modulator offers superior performance characteristics.
    • The theoretical model provides an accurate framework for predicting modulator behavior.
    • This novel design presents a promising advancement for optical-fiber modulation applications.