TY - JOUR
AU - Izadi, Misagh
AB - This article proposes a tunable slow/fast light device based on tuning the electromagnetically induced transparency (EIT) window. The proposed device includes two silicon ring-bus systems coupled together as cascade and a nano-layer of graphene located on half of one of the silicon ring resonators. Silicon ring-bus-ring-bus system (RBRB) can be used to create the EIT-like effect in the transmission window, and different chemical potential values of the graphene can be employed to alter the effective permittivity of the graphene-silicon ring structure. It is shown that EIT window frequency shifts via changing the graphene chemical potential in RBRB configuration. Furthermore, it is revealed that the wavelength bandwidth, where the slow/fast light phenomenon occurs, can adjust to 0.15 nm via changing the graphene chemical potential level from 0.49 to 0.62 eV. Therefore, the slow light wavelength has shifted without any mechanical manipulation of the proposed compact electro-optic device, which is one of its significant advantages. All simulations are fulfilled through the finite-difference time-domain method in this work.
TI - Control of slow/fast light frequency via tunable EIT window
JF - Journal of Optics
DO - 10.1088/2040-8986/ab4359
DA - 2019-11-01
UR - https://www.deepdyve.com/lp/iop-publishing/control-of-slow-fast-light-frequency-via-tunable-eit-window-MYqjE2Ft7u
SP - 115801
VL - 21
IS - 11
DP - DeepDyve
ER -