Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 54, Issue 2, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2018.2809461
Keywords
Hybrid plasmonic waveguide; nanophotonic; optoelectronics; dispersion compensation devices
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Funding
- Indian Nanoelectronics User Program (INUP) at Center of Nano Science and Engineering, Indian Institute of Science, Bangalore
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A photonic-waveguide at real nano-scales based on the concept of hybridization of plasmonic and photonic modes is designed and fabricated. A high-index layer of silicon to control vertical and lateral confinement is introduced under the nanoconfinement layer of thermally grown SiO2, which together with optimized waveguide-width provides low-loss guidance of hybrid-plasmonic-mode. A 11-nm thick SiO2 on silicon provides us an optical-confinement at real nano-scales with an acceptably low loss of 7 dB/cm. Also, the proposed device exhibits ultralow dispersion on introducing a grating in the silicon layer. In addition, the dispersion value crosses zero-dispersion many times over a broad range of wavelength.
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