Nanoplasmonic couplers and modulators based on metal-insulator-metal structures

Zhaolin Lu; Ruoxi Yang; Rami A. Wahsheh; M. A. G. Abushagur

doi:10.1117/12.842084

11 February 2010 Nanoplasmonic couplers and modulators based on metal-insulator-metal structures

Zhaolin Lu, Ruoxi Yang, Rami A. Wahsheh, M. A. G. Abushagur

Proceedings Volume 7604, Integrated Optics: Devices, Materials, and Technologies XIV; 760419 (2010) https://doi.org/10.1117/12.842084
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

We propose a "slot-to-slot" coupler to convert power between optical and metal-insulator-metal (MIM) plasmonic modes. Coupling efficiency of larger than 60% is obtained from 2D FDTD simulation. Based on this prototype, a quasi-MIM plasmonic junction is demonstrated using e-beam lithography onto an SOI substrate. The junction is formed by depositing a thin layer of gold (~20 nm) on part of a dielectric slot. When probed by 1520-nm laser, coupling efficiency of 36% is achieved for a 500-nm long quasi-MIM junction. Optical modulation is under investigation by pumping the device using visible light to change the optical property of gold.

Citation Download Citation

Zhaolin Lu, Ruoxi Yang, Rami A. Wahsheh, and M. A. G. Abushagur "Nanoplasmonic couplers and modulators based on metal-insulator-metal structures", Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 760419 (11 February 2010); https://doi.org/10.1117/12.842084

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