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Materials 2016, 9(11), 881;

An 8-Channel Wavelength MMI Demultiplexer in Slot Waveguide Structures

Faculty of Engineering Holon, Institute of Technology (HIT), Holon 5810201, Israel
Author to whom correspondence should be addressed.
Academic Editors: Lioz Etgar, Seppo Honkanen, Matthieu Roussey and Antti Säynätjoki
Received: 10 August 2016 / Revised: 1 October 2016 / Accepted: 26 October 2016 / Published: 1 November 2016
(This article belongs to the Special Issue Silicon Nanophotonics)
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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. View Full-Text
Keywords: slot-waveguide; FV-BPM; MMI; DWDM slot-waveguide; FV-BPM; MMI; DWDM

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Ben Zaken, B.B.; Zanzury, T.; Malka, D. An 8-Channel Wavelength MMI Demultiplexer in Slot Waveguide Structures. Materials 2016, 9, 881.

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