A three demultiplexer c-band using angled multimode interference in gan–sio2 slot waveguide structures

Eduard Ioudashkin, Dror Malka

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

One of the most common techniques for increasing data bitrate using the telecommunication system is to use dense wavelength division multiplexing (DWDM). However, the implementation of DWDM with more channels requires additional waveguide coupler devices and greater energy consumption, which can limit the system performances. To solve these issues, we propose a new approach for designing the demultiplexer using angled multimode interference (AMMI) in gallium nitride (GaN)–silica (SiO2) slot waveguide structures. SiO2 and GaN materials are selected for confining the infrared light inside the GaN areas under the transverse electric (TE) field mode. The results show that, after 3.56 mm light propagation, three infrared wavelengths in the C-band can be demultiplexed using a single AMMI coupler with a power loss of 1.31 to 2.44 dB, large bandwidth of 12 to 13.69 nm, very low power back reflection of 47.64 to 48.76 dB, and crosstalk of −12.67 to −15.62 dB. Thus, the proposed design has the potential for improving performances in the telecommunication system that works with DWDM technology.

Original languageEnglish
Article number2338
Pages (from-to)1-15
Number of pages15
JournalNanomaterials
Volume10
Issue number12
DOIs
StatePublished - 25 Nov 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • AMMI
  • C-band
  • Demultiplexer
  • GaN
  • Slot-waveguide

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