High gain and wideband on-chip hybrid plasmonic V-shaped nano-antenna

摘要： In this paper, a wideband hybrid plasmonic V-shaped nano-antenna is proposed based on coupled hybrid plasmonic waveguide (CHPW) feeding to increase the surface plasmons propagation length. The CHPW specifications are investigated analytically and numerically to obtain the dispersion relation and propagation length by the genetic algorithm and finite element method, respectively. Moreover, the proposed V-shaped nano-antenna with the fractional bandwidth of ～86% and the maximum ef?ciency of 98% is able to receive/transmit optical signals at three telecommunication wavelengths of 850, 1310, and 1550 nm with the high realized gains of 10.5, 9.39, 9.05 dB, respectively. The shape of the radiation pattern, with a main lobe along the antenna axis, makes this antenna appropriate for point-to-point connections in inter- or intra-chip optical wireless links and networks, which is studied comprehensively in this paper. Furthermore, to obtain a high optical power signal and tune the antenna orientation, the performance of the antenna is investigated with two different types of array structure, single row and square and its applications for energy harvesting and beam steering are studied. The fabrication feasibility of the nano-antenna is realizable based on the complementary metal-oxide-semiconductor technology.