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Related Experiment Videos

Optically reconfigurable azobenzene polymer-based fiber Bragg filter.

Rune Lausten1, Paul Rochon, Mario Ivanov

  • 1Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada.

Applied Optics
|December 2, 2005
PubMed
Summary

Reconfigurable fiber Bragg filters were created using optically written, thermally erased azopolymer gratings. This technology allows for arbitrary reconfiguration, showing potential for integrated photonic devices.

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Area of Science:

  • Photonics and Materials Science
  • Optoelectronics and Nanophotonics

Background:

  • Surface relief gratings are crucial for optical devices.
  • Azopolymer films offer unique photoresponsive properties for optical data storage and manipulation.

Purpose of the Study:

  • To demonstrate an arbitrarily reconfigurable fiber Bragg filter using azopolymer films.
  • To explore the write-erase-write capabilities of these gratings for dynamic optical applications.

Main Methods:

  • Optically writing surface relief gratings on Disperse Red 1 polymethyl methacrylate azopolymer films.
  • Utilizing azopolymer-coated side-polished fiber blocks for grating fabrication.
  • Performing finite difference time domain (FDTD) simulations to analyze device performance.

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Main Results:

  • Successfully demonstrated optically writable and thermally erasable surface relief gratings.
  • Achieved arbitrary reconfiguration of a fiber Bragg filter through a write-erase-write cycle.
  • Simulations indicated potential optimization in silicon-on-insulator waveguide platforms.

Conclusions:

  • Azopolymer-based gratings provide a viable platform for reconfigurable photonic devices.
  • The demonstrated write-erase-write capability is key for dynamic optical filtering.
  • Further optimization in integrated platforms like silicon-on-insulator is promising for future applications.