Bragg Fiber: Some Nonlinear Aspects

This chapter briefly discusses the various recent Bragg fiber nonlinear characteristics that are very relevant to photonics applications. First, an attempt is made to examine solitons in a dispersive ring that shows Kerr nonlinearity and experiences no loss. The nonlinear transmission of optical pulses in solid-core Bragg fibers with durations of several hundred femtoseconds is then briefly summarized. Subsequently, the development of sech pulses in the nonlinear domain was investigated. The investigation focusses on the influence that pulse width, peak power, soliton order, and higher order dispersion have on the development of each pulse. Next, an intriguing demonstration of the propagation of megawatt-class pulses in flexible all-silica fibers has been investigated. It is now known that well designed all-glass antiresonant fibers, when pumped by fiber-based chirped pulse amplification (CPA) devices, make it possible to generate and distribute megawatt-class pulses over extensive distances in an effective manner. These specific types of Bragg fibers have the potential to facilitate the creation of miniaturized endomicroscopes that can be utilized for a variety of biomedical purposes. Finally, a novel tellurite high index core Bragg fiber has been studied as a novel method for generating a powerful supercontinuum. High-index-core Bragg fibers have significant potential for achieving extremely coherent mid-infrared supercontinuum production.