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Related Experiment Videos

Design issues of a multimode interference-based 3-dB splitter.

Christos Themistos1, B M Azizur Rahman

  • 1School of Engineering, City University, Northampton Square, London EC1V 0HB, England.

Applied Optics
|December 5, 2002
PubMed
Summary
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This study analyzes multimode interference 3-dB splitters on InP waveguides, focusing on power loss, fabrication tolerances, and wavelength dependence for optimal device design.

Area of Science:

  • Photonics and Waveguide Technology
  • Optical Device Design

Background:

  • Multimode interference (MMI) devices are crucial for optical signal splitting.
  • Deeply etched Indium Phosphide (InP) waveguides offer advantages for photonic integrated circuits.

Purpose of the Study:

  • To investigate critical design parameters for MMI-based 3-dB splitters.
  • To analyze performance under various interference mechanisms (general, restricted, symmetric).

Main Methods:

  • Utilized the finite-element-based beam propagation method.
  • Simulated performance considering power loss, loss imbalance, fabrication tolerances, and wavelength dependence.

Main Results:

  • Quantified the impact of fabrication tolerances on splitter performance.

Related Experiment Videos

  • Evaluated wavelength dependency of the 3-dB splitting ratio.
  • Presented detailed results for different interference scenarios.

    • Conclusions:

    • Identified key factors influencing the performance of InP MMI 3-dB splitters.
    • Provided insights for optimizing the design of these optical splitters.