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Related Experiment Videos

Two-point source interferometric grating writing.

Brian J Ashton1, John Canning, Nathaniel Groothoff

  • 1Optical Fibre Technology Centre, Australian Photonics Cooperative Research Centre, University of Sydney, 206 National Innovation Centre, Australian Technology Park, Eveleigh, NSW 1430, Australia. b.ashton@oftc.usyd.edu.au

Applied Optics
|June 5, 2004
PubMed
Summary
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A new compact interferometer enables high-quality grating inscription by preventing unwanted light interference. This method introduces novel apodization for potentially improved Bragg grating fabrication.

Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Traditional grating inscription methods often suffer from path-length differences.
  • Achieving high-quality gratings requires precise control over fringe patterns and minimizing unwanted optical orders.

Purpose of the Study:

  • To demonstrate a novel grating-writing interferometer.
  • To introduce a new apodization technique for grating fabrication.
  • To assess the potential of this method for Bragg grating inscription.

Main Methods:

  • Development and demonstration of a compact, stable, and broadly tunable interferometer.
  • Utilizing the interferometer to inscribe gratings by controlling fringe patterns.
  • Implementing a novel apodization method by eliminating Fresnel end reflections.

Related Experiment Videos

Main Results:

  • The demonstrated interferometer is compact, stable, and tunable over 1000 nm.
  • The technique successfully prevents unwanted light orders from affecting the fringe pattern, enabling high-quality grating inscription.
  • Experimental evidence validates the novel apodization concept.

Conclusions:

  • The novel grating-writing interferometer offers advantages in stability, compactness, and tunability.
  • The developed apodization technique is effective in removing Fresnel end reflections.
  • This technique shows significant potential for advanced Bragg grating fabrication.