Abstract

Recently, hollow core anti-resonant fibers (HC-ARFs) with negative curvature core boundary have been studied and developed in mid-IR regime [1,2]. The key unique feature of HC-ARFs is that almost 99.99% of the light can be guided inside the air-core which makes these fibers a suitable candidate for guiding light in the mid-IR wavelength regime where silica attenuation is a dominating factor [1]. Moreover, these fibers offer low leakage losses, low power overlap with the silica part of the fiber structure, and wide-transmission spectrum [3]. In this work, we propose an improved design of HC-ARF which can offer record low transmission loss in mid-IR spectral regions, in addition to having lower bend sensitivity than previously reported fiber structures.

© 2015 IEEE