Broadband Metallic Fiber-to-Chip Couplers and a Low-Complexity Integrated Plasmonic Platform
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Date
2021-06-09
Publication Type
Journal Article
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Abstract
We present a plasmonic platform featuring efficient, broadband metallic fiber-to-chip couplers that directly interface plasmonic slot waveguides, such as compact and high-speed electro-optic modulators. The metallic gratings exhibit an experimental fiber-to-slot coupling efficiency of −2.7 dB with −1.4 dB in simulations with the same coupling principle. Further, they offer a huge spectral window with a 3 dB passband of 350 nm. The technology relies on a vertically arranged layer stack, metal–insulator–metal waveguides, and fiber-to-slot couplers and is formed in only one lithography step with a minimum feature size of 250 nm. As an application example, we fabricate new modulator devices with an electro-optic organic material in the slot waveguide and reach 50 and 100 Gbit/s data modulation in the O- and C-bands within the same device. The devices’ broad spectral bandwidth and their relaxed fabrication may render them suitable for experiments and applications in the scope of sensing, nonlinear optics, or telecommunications.
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Publication status
published
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Book title
Journal / series
Volume
21 (11)
Pages / Article No.
4539 - 4545
Publisher
American Chemical Society
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Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Plasmonics; Slot waveguides; Grating; Fiber-to-chip coupling; Extraordinary optical transmission; Electro-optic modulators
Organisational unit
03974 - Leuthold, Juerg / Leuthold, Juerg
02635 - Institut für Elektromagnetische Felder / Institute of Electromagnetic Fields
Notes
Funding
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