Analysis and Design of Plasmonic-Organic Hybrid Electro-Optic Modulators Based on Directional Couplers

We present a detailed simulation study on plasmonic-organic hybrid electro-optic modulators based on coupled symmetric or asymmetric plasmonic slots. An electro-optic polymer is exploited as an active material, and the device is compatible with a silicon photonics platform. The proposed device opera...

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Bibliographic Details
Published in:IEEE photonics journal 2022-04, Vol.14 (2), p.1-11
Main Authors: Tibaldi, Alberto, Ghomashi, Mohammadamin, Bertazzi, Francesco, Vallone, Marco, Goano, Michele, Ghione, Giovanni
Format: Article
Language:English
Subjects:
Asymmetry
Bandwidths
Bias
Couplings
Cross coupling
Data centers
Directional couplers
Electric communication systems
Electro-optic deflectors
Electro-optic modulators
Electro-optical systems
Electro-optical waveguides
Energy dissipation
Modulation
Modulators
optoelectronic materials
Photonics
Plasmonics
Plasmons
Refractive index
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Summary:We present a detailed simulation study on plasmonic-organic hybrid electro-optic modulators based on coupled symmetric or asymmetric plasmonic slots. An electro-optic polymer is exploited as an active material, and the device is compatible with a silicon photonics platform. The proposed device operates at 1550 nm wavelength, typical of data center or long-haul telecommunication systems. The device performance in terms of area, plasmonic losses, optical bandwidth, intrinsic modulation bandwidth and energy dissipation are comparable to already proposed Mach-Zehnder solutions, but with potentially better extinction ratio, coupling losses due to photonic-plasmonic transitions, and flexibility in exploiting, without any performance penalty, asymmetric slots to shift the ON and OFF states bias. Finally, the bias dependence of the modulation chirp is investigated, comparing through and cross-coupling configurations.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2022.3147687