Optimising a nantenna array at 1550 nm band

Waleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi

Optimising a nantenna array at 1550 nm band

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Author(s): Waleed Tariq Sethi ^{1, 2} ; Hamsakutty Vettikalladi ³ ; Habib Fathallah ^{2, 3} ; Mohamed Himdi ¹
- Affiliations: 1: Communications Department, Institute of Electronics and Telecommunications of Rennes University (IETR), University of Rennes 1, 35700 Rennes, France ;
  2: KACST Technology Innovation Center in Radio frequency and Photonics for the e-Society (RFTONICS), King Saud University, Riyadh 11451, Saudi Arabia ;
  3: Electrical Engineering Department, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
Source: Volume 11, Issue 11, November 2016, p. 779 – 782
DOI: 10.1049/mnl.2016.0493 , Online ISSN 1750-0443

Received 27/07/2016, Accepted 19/08/2016, Published 01/11/2016

The theoretical analysis and simulated design of a plasmonic equilateral triangular dielectric resonator nantenna fed via a 1 × 2 corporate feed network are presented. Utilising full wave electromagnetic simulation software Computer Simulation Technology (CST) Microwave Studio (MWS) and verifying results via high-frequency structure simulator, the working of the proposed nantenna at optical C-band (1.55 μm) is demonstrated and confirmed. Numerical results prove that the proposed nantenna exhibits a directivity of 9.57 dB with an impedance bandwidth of 2.58% (189–194 THz) covering the standard optical C-band transmission window. Furthermore, by selecting the appropriate orientation of the triangular dielectric resonators, the proposed nantenna structure can be tuned to operate at the higher or lower optical bands offering a threshold value of directivity and bandwidth Δf. By tuning the nantenna they achieve an increase in bandwidth of 4.96% (185.1–194.7 THz) and directivity also improves to 9.7 dB. The wideband and directive properties make the proposed nantenna attractive for a wide range of applications including broadband nanophotonics, optical sensing, optical imaging and energy harvesting applications.

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Optimising a nantenna array at 1550 nm band

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