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Related Experiment Video

Updated: Jan 2, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Optical phase noise engineering via acousto-optic interaction and its interferometric applications.

Nandan Satapathy1, Deepak Pandey, Sourish Banerjee

  • 1Raman Research Institute, Sadashiva Nagar, Bangalore 560080, India. nandan.s@gmail.com

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|May 23, 2013
PubMed
Summary

Researchers digitally controlled light phase using acousto-optic interaction, engineering optical phase noise. This technique enables tailored dephasing for optical networks and reveals photon bunching in interferometer dark ports.

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Area of Science:

  • Photonics and Optical Engineering
  • Quantum Optics

Background:

  • Precise control over light phase is crucial for advanced optical systems.
  • Optical phase noise can degrade signal integrity in fiber optic networks.
  • Understanding light-matter interactions is key to manipulating optical properties.

Purpose of the Study:

  • To demonstrate rapid and fine control over light phase using digitally generated signals.
  • To engineer and quantify optical phase noise by tailoring phase jump statistics.
  • To investigate photon correlations in a Mach-Zehnder interferometer with engineered phase noise.

Main Methods:

  • Acousto-optic interaction to transfer radio-frequency electrical phase jumps to light.
  • Tailoring the statistics of phase jumps in electrical signals to engineer phase noise.
  • Visibility measurements of interference fringes to quantify phase noise.
  • Analytical calculation of zero-delay intensity-intensity correlation [G2(0)] values.

Main Results:

  • Successful demonstration of digitally controlled optical phase jumps.
  • Engineered optical phase noise quantified through interference fringe visibility.
  • Analytical prediction of photon bunching from the dark port of a Mach-Zehnder interferometer.
  • Demonstration of controlled dephasing for applications in optical networks.

Conclusions:

  • Acousto-optic interaction provides a robust method for precise optical phase control.
  • Engineered optical phase noise can be precisely quantified and utilized.
  • The dark port of an interferometer can act as a source of bunched photons under specific conditions.
  • This technique offers new possibilities for manipulating light propagation and correlations in optical systems.