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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Dynamic switching characteristics of InGaAsP/InP multimode interference optical waveguide switch.

Shinji Tomofuji1, Shinji Matsuo, Takaaki Kakitsuka

  • 1Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita-shi, Osaka, 565-0871, Japan. tomofuji@pn.comm.eng.osaka-u.ac.jp

Optics Express
|January 7, 2010
PubMed
Summary
This summary is machine-generated.

This study presents a 1x4 InGaAsP/InP multimode interference (MMI) waveguide switch for optical packet switching (OPS). The device demonstrates excellent performance, including low crosstalk and fast switching speeds, making it suitable for advanced optical networks.

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Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics
  • Semiconductor Devices

Background:

  • Multimode interference (MMI) waveguide devices are crucial components in optical communication systems.
  • Optical packet switching (OPS) requires high-performance, fast-switching optical devices.
  • Indium Gallium Arsenide Phosphide on Indium Phosphide (InGaAsP/InP) is a key material system for optoelectronic integrated circuits.

Purpose of the Study:

  • To fabricate and characterize a 1x4 InGaAsP/InP MMI waveguide switch.
  • To evaluate the performance of the MMI switch for optical packet switching applications.
  • To demonstrate the dynamic switching capabilities and switching speeds of the fabricated device.

Main Methods:

  • Fabrication of a 1x4 MMI splitter, phase-shifted single-mode waveguides, and a 4x4 MMI combiner using InGaAsP/InP material.
  • Characterization of the device's optical performance, including crosstalk and extinction ratio.
  • Experimental demonstration of dynamic switching and measurement of rise and fall times.

Main Results:

  • Achieved a crosstalk of -14.47 dB and an extinction ratio of 23.39 dB.
  • Successfully demonstrated dynamic switching operation.
  • Measured switching rise and fall times of 1.4 ns and 1.2 ns, respectively.

Conclusions:

  • The fabricated 1x4 InGaAsP/InP MMI waveguide switch exhibits promising performance for optical packet switching.
  • The device's low crosstalk, high extinction ratio, and fast switching speeds meet critical requirements for OPS.
  • This work contributes to the development of advanced integrated optical switching solutions.