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Related Experiment Videos

Slotted multimode-interference devices.

David M Mackie1, Andrew W Lee

  • 1US Army Research Laboratory, AMSRL-SE-EM, Adelphi, Maryland 20783, USA. dmackie@arl.army.mil

Applied Optics
|January 14, 2005
PubMed
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Researchers developed a new multimode interference (MMI) device modification by adding slots. This innovation shortens the self-image length, enhances bandwidth, and enables switching functionalities.

Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics

Background:

  • Multimode interference (MMI) devices are crucial in integrated optics for beam splitting and combining.
  • Existing MMI designs face limitations in length and tunability.

Purpose of the Study:

  • To introduce a novel slot modification for MMI devices.
  • To enhance the performance and applicability of MMI devices through this modification.

Main Methods:

  • Introducing a longitudinal slot (or slots) with specific width and effective refractive index into the MMI region.
  • Analyzing the impact of N slots on self-image length reduction.
  • Investigating the switching capability by varying slot parameters.

Main Results:

  • Self-image length is reduced by a factor of N + 1 with N slots.

Related Experiment Videos

  • Slot modification enables switching functionality by tuning effective refractive index or width.
  • The modification increases device bandwidth and demonstrates good error tolerances.

    • Conclusions:

    • The novel slot modification offers a versatile approach to designing MMI devices.
    • This technique provides enhanced control over device length and introduces switching capabilities.
    • The improved bandwidth and error tolerance make these modified MMI devices highly applicable.