Supercontinuum generation in all-solid photonic crystal fiber with low index core

Buczynski R.; Kujawa I.; Kasztelanic R.; Pysz D.; Borzycki K.; Berghmans F.; Thienpont H.; Stepien R.

Laser Physics

22 (4), 2012, 784–790, 10.1134/S1054660X12040019

In this paper we report on the fabrication and characterization of an all-solid photonic band gap fiber with high contrast and low index core. The fiber cladding is composed of high index lead-silicate rods while borosilicate NC21 glass is used as a background glass. A 70 nm wide photonic band gap at 875 nm central wavelength is experimentally identified and compared with a numerical model. We also present a novel method for photonic band gap measurement using a femtosecond pulsed laser. The method is verified against standard one and discussed.