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Optical circuit design based on a wavefront-matching method.

T Hashimoto1, T Saida, I Ogawa

  • 1NTT Photonics Laboratories, Nippon Telegraph and Telephone Corp., Atsugi 243-0198, Japan.

Optics Letters
|October 8, 2005
PubMed
Summary

We developed a new optical circuit design method using boundary value problems. This technique creates compact, synthesized refractive index patterns for efficient coherent wave manipulation, demonstrated with a wavelength demultiplexer.

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Area of Science:

  • Photonics and optical engineering
  • Computational electromagnetics

Background:

  • Designing compact optical circuits for coherent waves presents significant challenges.
  • Existing methods often lack efficiency in synthesizing complex refractive index patterns.

Purpose of the Study:

  • To introduce a novel optical circuit design method for coherent waves.
  • To demonstrate the synthesis of compact optical circuits with tailored refractive index patterns.

Main Methods:

  • Formulating the optical circuit design as a boundary value problem.
  • Employing numerical calculations for automatic synthesis of refractive index patterns.
  • Applying the method to design a 1.3/1.55 micrometer wavelength demultiplexer.

Main Results:

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  • The proposed method yields highly compact optical circuit designs.
  • Automatic synthesis of refractive index patterns is achieved for specified input/output fields.
  • Successful design and characterization of a 1.3/1.55 micrometer wavelength demultiplexer.

Conclusions:

  • The boundary value problem approach offers an effective strategy for optical circuit design.
  • The method enables the creation of compact and efficient optical devices.
  • This technique has potential applications in integrated photonics and optical communication systems.