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Related Experiment Video

Updated: May 10, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Injection locking-based pump recovery for phase-sensitive amplified links.

Samuel L I Olsson1, Bill Corcoran, Carl Lundström

  • 1Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden. samuel.olsson@chalmers.se

Optics Express
|June 22, 2013
PubMed
Summary
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A novel injection locking system recovers pump waves in phase-sensitive amplified links, overcoming 40 dB loss. This technology enables wavelength-division multiplexing (WDM) compatible links over long distances without signal penalty.

Area of Science:

  • Optical communications
  • Laser physics
  • Signal processing

Background:

  • Phase-sensitive amplification (PSA) offers high-gain optical amplification but is limited by pump depletion and noise.
  • Maintaining pump wave integrity is crucial for stable and efficient PSA in optical links.
  • Existing pump recovery methods struggle with high link losses and complex modulation formats.

Purpose of the Study:

  • To demonstrate an injection locking-based pump recovery system for phase-sensitive amplified links.
  • To evaluate the system's performance with high effective span loss and complex modulation signals.
  • To investigate the operational power limits and associated penalties of the pump recovery system.

Main Methods:

  • Utilized an injection locking technique to design and implement a pump recovery system.

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Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Related Experiment Videos

Last Updated: May 10, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

  • Employed 10 GBd DQPSK (Differential Quadrature Phase Shift Keying) signals for testing.
  • Experimentally determined the operating power limits by analyzing noise and phase modulation transfer characteristics.

    • Main Results:

    • Successfully demonstrated penalty-free recovery of a phase-modulated pump wave with 64 dB amplification.
    • The system effectively handled an impressive 40 dB effective span loss.
    • Quantified link penalties and explained their origin in noise and phase modulation transfer.

    Conclusions:

    • The developed injection locking system enables robust pump recovery in high-loss PSA links.
    • This breakthrough facilitates the realization of WDM-compatible phase-sensitive amplified links over significant distances.
    • The findings provide critical insights into the operational limits and performance of such systems.