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Updated: Apr 27, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Dynamic wavelength conversion in copropagating slow-light pulses.

K Kondo¹, T Baba¹

¹Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogayaku, Yokohama 240-8501, Japan.

Physical Review Letters

|June 21, 2014

Summary

This summary is machine-generated.

This study demonstrates dynamic wavelength conversion (DWC) using slow-light pulses in silicon waveguides. The method achieves a large 4.9 nm blueshift by controlling pulse interactions, offering a novel approach to wavelength tuning.

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Area of Science:

Photonics
Optical Communications
Materials Science

Background:

Dynamic wavelength conversion (DWC) is crucial for flexible optical networks.
Conventional resonator-based DWC has limitations.
Cross-phase modulation is a key mechanism in DWC.

Purpose of the Study:

To generalize resonator-based DWC.
To demonstrate a novel DWC method using slow-light pulses.
To achieve a large wavelength shift in DWC.

Main Methods:

Utilizing dispersion-engineered silicon photonic crystal waveguides.
Controlling copropagating slow-light signal and control pulses.
Leveraging free carrier generation via two-photon absorption.
Matching group velocities for enhanced interaction.

Main Results:

Achieved an extremely large wavelength shift of 4.9 nm blueshift.
Demonstrated dynamic wavelength shifting of the signal.
Confirmed the link between DWC and cross-phase modulation.

Conclusions:

The proposed method generalizes conventional DWC.
Slow-light pulse control offers a powerful technique for DWC.
The demonstrated large blueshift has significant implications for optical signal processing.