Low confinement loss hybrid-guiding tellurite photonic bandgap fiber

A hybrid-guiding tellurite (TZNLP) photonic bandgap fiber (PBGF) with low confinement loss is presented in this paper. A detailed comparison between the hybrid-guiding tellurite PBGF in which the high-index rods (TLWMN) replace one row of air holes in the radial direction and the all-solid tellurite PBGF has been accomplished. Low confinement loss windows can be achieved in this novel fiber due to the collaborated action of two guiding mechanisms–total internal reflection and antiresonant reflection.

► A hybrid-guiding tellurite (TZNLP) PBGF was reported. Light is confined in the central core by ARR and TIR simultaneously. ► Bandgap distribution of this PBGF is similar to that of the all-solid tellurite PBGF. ► The confinement loss is much lower than that of the all-solid tellurite PBGF in the restricted wavebands.