Abstract

A fractional-order silicon hybrid plasmonic temporal integrator with considerably wide full-width at half- maximum (FWHM) bandwidth of ∼1 THz, higher than the previously reported photonic temporal integrators, and noticeably compact footprint of ∼5 μm × 3 μm is proposed. The presented plasmonic temporal integrator is implemented based on a double-ring add-drop resonator structure with ring radii of 1.5 μm. The 3-D finite-difference time-domain (3D-FDTD) simulation results show that the fractional-order of the integrator is 0.64 and it is capable of processing the ultrashort pulses with the duration of 450 fs. The integration time window is estimated as 520 fs, while the achieved energy efficiency is as high as −1.92 dB. The compact size and wide bandwidth of the proposed integrator makes it suitable for ultrafast optical signal processing applications. As an example, the functionality of the designed integrator for solving ordinary differential equations (ODEs) is investigated.

Subpicosecond flat-top pulse shaping using a hybrid plasmonic microring-based temporal differentiator

Azadeh Karimi, Abbas Zarifkar, and Mehdi Miri
J. Opt. Soc. Am. B 36(7) 1738-1747 (2019)

Ultracompact temporal integrator using graphene-based long-range hybrid plasmonic waveguides

Azadeh Karimi, Abbas Zarifkar, and Mehdi Miri
Appl. Opt. 60(23) 6736-6741 (2021)

Design of ultracompact tunable fractional-order temporal differentiators based on hybrid-plasmonic phase-shifted Bragg gratings

Azadeh Karimi, Abbas Zarifkar, and Mehdi Miri
Appl. Opt. 57(25) 7402-7409 (2018)

Design and comprehensive analysis of an ultra-fast fractional-order temporal differentiator based on a plasmonic Bragg grating microring resonator

Afshin Ahmadpour, Amir Habibzadeh-Sharif, and Faezeh Bahrami-Chenaghlou
Opt. Express 29(22) 36257-36272 (2021)

Ultrafast all-optical switching in a silicon-based plasmonic nanoring resonator

S. Sederberg, D. Driedger, M. Nielsen, and A.Y. Elezzabi
Opt. Express 19(23) 23494-23503 (2011)