Hollow-core fiber sensor based on the long-range Tamm plasmon polariton with enhanced figure of merit

•The first introduction of the concept of long-range and short-range Tamm plasmon polariton.•The potential of LRTPP for sensing applications is investigated for the first time.•The structural parameter optimization of LRTPP-based hollow-core fiber sensor utilizing the ray transmission model.•Ultra-wide refractive index detection range and enhanced figure of merit.