A Proposal for a Plasmonic 2×1 Multiplexer Composed of an Optical Adder, Integrated with a MEMS Micro-Switch

Subject Areas : Electrical Engineering

razieh soltanisarvestani ¹ , Rahim Ghayour ^{2 *} , Maryam Mohitpour ³

1 - Department of Electrical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
2 - Department of Electrical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
3 - Department of Electrical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran

Received: 2025-01-29 Accepted : 2025-03-26 Published : 2025-04-07

Keywords: Plasmonic, MIM, Optical Multiplexer, WDM, Optical Resonator,

Abstract :

 In this paper, a 2×1 Micro-Opto-Electro-Mechanical-Systems (MOEMS) multiplexer consisting of Metal-Insulator-Metal (MIM) waveguides and micro resonators is designed and numerically investigated. The proposed device takes the advantage of Surface Plasmon Polaritons (SPPs) propagation in the MIM structure and a mechanically tunable optical switch to realize the multiplexing function. According to the simulation results, the transmittances of the output channels of the device reach up to 72% at the desired wavelengths. Thereafter, the geometry of the proposed structure has been optimized to improve its functional characteristics. An extinction ration around 25.6 dB is obtained for the optimized two-channel structure in the operating wavelength range. Simple fabrication process, high efficiency, and low-cost manufacturing process make the proposed micro device a suitable choice for several applications in the area of optical telecommunications, especially wavelength division multiplexing. The proposed structure is composed of two main parts: a MEMS-based adder and a plasmonic switch.

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