An 8-channel wavelength MMI demultiplexer in slotwaveguide structures

Bar Baruch Ben Zaken, Tal Zanzury, Dror Malka

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


We propose a novel 8-channel wavelength multimode interference (MMI) demultiplexer in slot waveguide structures that operate at 1530 nm, 1535 nm, 1540 nm, 1545 nm, 1550 nm, 1555 nm, 1560 nm, and 1565 nm. Gallium nitride (GaN) surrounded by silicon (Si) was found to be a suitable material for the slot-waveguide structures. The proposed device was designed by seven 1 × 2 MMI couplers, fourteen S-bands, and one input taper. Numerical investigations were carried out on the geometrical parameters using a full vectorial-beam propagation method (FV-BPM). Simulation results show that the proposed device can transmit 8-channel that works in the whole C-band (1530-1565 nm) with low crosstalk (-19.97--13.77 dB) and bandwidth (1.8-3.6 nm). Thus, the device can be very useful in optical networking systems that work on dense wavelength division multiplexing (DWDM) technology.

Original languageEnglish
Article number881
Issue number11
StatePublished - 1 Nov 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 by the authors; licensee MDPI, Basel, Switzerland.


  • DWDM
  • FV-BPM
  • MMI
  • Slot-waveguide


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