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Related Experiment Video

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Bandwidth analysis of waveguide grating coupler.

Zhe Xiao1, Tsung-Yang Liow, Jing Zhang

  • 1OPTIMUS, School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore 639798.

Optics Express
|March 14, 2013
PubMed
Summary
This summary is machine-generated.

This study investigates the bandwidth of planar waveguide grating couplers. Fiber parameters significantly impact coupler performance, leading to new design guidelines for wider bandwidths.

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Area of Science:

  • Photonics
  • Optical Engineering
  • Waveguide Technology

Background:

  • Planar waveguide grating couplers are crucial for fiber-optic communication.
  • Understanding their bandwidth is essential for high-performance optical systems.

Purpose of the Study:

  • To theoretically investigate the bandwidth of planar waveguide grating couplers.
  • To identify key factors influencing grating coupler bandwidth.
  • To propose practical design and operation guidelines for wideband performance.

Main Methods:

  • Rigorous grating theory was applied for theoretical investigation.
  • Analysis of a derived rigorous bandwidth formula.

Main Results:

  • Grating coupler bandwidth depends on intrinsic properties and fiber parameters (position, beam waist, Numerical Aperture).
  • A rigorous formula for grating coupler bandwidth was derived.

Conclusions:

  • Fiber parameters critically influence grating coupler bandwidth.
  • Practical guidelines for optimizing grating coupler design and fiber operation for wideband performance are proposed.