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Materials 2016, 9(7), 516; doi:10.3390/ma9070516

A Photonic 1 × 4 Power Splitter Based on Multimode Interference in Silicon–Gallium-Nitride Slot Waveguide Structures

1
Faculty of Engineering, Department of Electro-Optics, Bar-Ilan University, Ramat-Gan 52900, Israel
2
Faculty of Engineering Holon Institute of Technology (HIT), Holon 5810201, Israel
*
Author to whom correspondence should be addressed.
Academic Editor: Seppo Honkanen
Received: 7 May 2016 / Revised: 14 June 2016 / Accepted: 17 June 2016 / Published: 25 June 2016
(This article belongs to the Special Issue Silicon Nanophotonics)
View Full-Text   |   Download PDF [2391 KB, uploaded 25 June 2016]   |  

Abstract

In this paper, a design for a 1 × 4 optical power splitter based on the multimode interference (MMI) coupler in a silicon (Si)–gallium nitride (GaN) slot waveguide structure is presented—to our knowledge, for the first time. Si and GaN were found as suitable materials for the slot waveguide structure. Numerical optimizations were carried out on the device parameters using the full vectorial-beam propagation method (FV-BPM). Simulation results show that the proposed device can be useful to divide optical signal energy uniformly in the C-band range (1530–1565 nm) into four output ports with low insertion losses (0.07 dB). View Full-Text
Keywords: optical splitter; slot waveguide; multimode interference (MMI) optical splitter; slot waveguide; multimode interference (MMI)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Malka, D.; Danan, Y.; Ramon, Y.; Zalevsky, Z. A Photonic 1 × 4 Power Splitter Based on Multimode Interference in Silicon–Gallium-Nitride Slot Waveguide Structures. Materials 2016, 9, 516.

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