title: Determination of the quasi-TE mode (in-plane) graphene linear absorption coefficient via integration with silicon-on-insulator racetrack cavity resonators.
abstract: We examine the near-IR light-matter interaction for graphene integrated cavity ring resonators based on silicon-on-insulator (SOI) race-track waveguides. Fitting of the cavity resonances from quasi-TE mode transmission spectra reveal the real part of the effective refractive index for graphene, n(eff) = 2.23 ± 0.02 and linear absorption coefficient, α(gTE) = 0.11 ± 0.01dBμm(-1). The evanescent nature of the guided mode coupling to graphene at resonance depends strongly on the height of the graphene above the cavity, which places limits on the cavity length for optical sensing applications.
authors.forename: Iain F
authors.initials: IF
authors.lastname: Crowe
authors.forename: Nicholas
authors.initials: N
authors.lastname: Clark
authors.forename: Siham
authors.initials: S
authors.lastname: Hussein
authors.forename: Brian
authors.initials: B
authors.lastname: Towlson
authors.forename: Eric
authors.initials: E
authors.lastname: Whittaker
authors.forename: Milan M
authors.initials: MM
authors.lastname: Milosevic
authors.forename: Frederic Y
authors.initials: FY
authors.lastname: Gardes
authors.forename: Goran Z
authors.initials: GZ
authors.lastname: Mashanovich
authors.forename: Matthew P
authors.initials: MP
authors.lastname: Halsall
authors.forename: Aravind
authors.initials: A
authors.lastname: Vijayaraghaven