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Optical interleavers based on two-dimensional photonic crystals.

Yaw-Dong Wu1, Min-Lin Huang, Tien-Tsorng Shih

  • 1Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 807, Taiwan. ydwu@cc.kuas.edu.tw

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Summary
This summary is machine-generated.

This study introduces an ultrasmall optical interleaver using 2D photonic crystals. The device enables dense wavelength division multiplexing (DWDM) for optical fiber communication systems.

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Area of Science:

  • Photonics
  • Optical Engineering
  • Materials Science

Background:

  • Dense Wavelength Division Multiplexing (DWDM) systems require efficient wavelength-selective components.
  • Existing optical interleavers can be bulky, limiting device miniaturization.
  • Photonic crystals (PCs) offer unique light manipulation properties for novel optical devices.

Purpose of the Study:

  • To propose and numerically analyze an ultrasmall optical interleaver.
  • To demonstrate the functionality of a 2D photonic crystal waveguide structure as an interleaver.
  • To assess the device's suitability for DWDM applications.

Main Methods:

  • Design of an optical interleaver using directional coupler waveguides.
  • Implementation within a two-dimensional photonic crystal (2D PC) structure.
  • Numerical simulations to evaluate performance at a central wavelength of 1550 nm.

Main Results:

  • The proposed 2D PC waveguide structure successfully functions as an optical interleaver.
  • Achieved a central wavelength of 1550 nm with a channel spacing of 0.8 nm (100 GHz).
  • Demonstrated suitability for dense wavelength division multiplexing (DWDM) specifications.

Conclusions:

  • The ultrasmall optical interleaver based on 2D PCs is a viable component for DWDM systems.
  • The device can serve as a wavelength-selective element for multiplexer-demultiplexer applications.
  • This technology can enhance channel densities in optical fiber communication.