thermo-optic aided tunability of sr0.6ba0.4nb2o6 thin film-based electro-optic modulator using waveguide coupled spr modes

Present article demonstrates the effective tuning of thermo-optic (to) properties with the electro-optic (eo) modulation characteristics of sbn60 thin films utilizing waveguide coupled surface plasmon resonance (wcspr) technique. electro-optic (eo) coefficient (r) was in turn tuned from a value of 594 pm/v to 621 pm/v with increasing ambient temperature from 296 to 373 k. tunable percent modulation index varying from 24 to 55% was obtained with increasing ambient temperature at a fixed applied electric field. the obtained results clearly illustrate an efficient thermally tunable eo modulator based on sbn thin film utilizing a simplistic approach with $$ {left.kern0em left(frac{partial n}{partial t}right)right|}_{e=0}=88.3times {10}^{-4}{k}^{-1} $$ .