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Related Experiment Videos

All-optical wavelength and pulse-width conversions with a Sagnac interferometer semiconductor-based switch.

Motoharu Matsuura1, Naoto Kishi

  • 1Department of Information and Communication Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182-8585, Japan. matsuura@ice.urc.ac.jp

Optics Letters
|March 27, 2003
PubMed
Summary

This study introduces a novel Sagnac interferometer switch for all-optical data processing. It achieves fast, all-optical wavelength and pulse-width conversions without carrier recovery time limitations.

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Area of Science:

  • Photonics and Optical Engineering
  • Semiconductor Device Physics

Background:

  • All-optical signal processing offers advantages in speed and bandwidth over electronic methods.
  • Existing all-optical switches often face limitations due to semiconductor carrier recovery times.
  • Efficient wavelength and pulse-width conversion are crucial for advanced optical networks.

Purpose of the Study:

  • To propose and demonstrate a Sagnac interferometer switch utilizing a semiconductor optical amplifier.
  • To achieve all-optical wavelength conversion and pulse-width conversion.
  • To overcome the speed limitations imposed by carrier recovery times in semiconductor devices.

Main Methods:

  • Implementation of a Sagnac interferometer configuration.
  • Integration of a semiconductor optical amplifier within the interferometer.

Related Experiment Videos

  • Experimental validation of wavelength conversion and pulse-width manipulation.
  • Utilizing input data pulses of 1.5 ps.

    • Main Results:

    • Demonstrated all-optical wavelength conversion from 1539 nm to a tunable 15 nm bandwidth (1550-1565 nm).
    • Successfully converted input pulse widths (1.5 ps) to a range of 2.4-18.1 ps.
    • The proposed switch exhibits a simple configuration and high switching speeds.

    Conclusions:

    • The Sagnac interferometer switch with a semiconductor optical amplifier is a viable solution for all-optical signal processing.
    • This approach enables flexible and fast wavelength and pulse-width conversions.
    • The design effectively bypasses the carrier recovery time bottleneck, paving the way for faster optical networks.