In this paper we present the possibility of supercontinuum generation in the dual mode and single mode regime of highly birefringent microstructured fibers. Unique birefringent fiber geometry enables precise dispersion control in both fundamental and second order modes. Our results are related to create new functionality in the generated supercontinua: polarization based spectrum tunability and flatness control. We analyse experimentally the stability of the generation of nonlinear effects in our series of fibers, related to polarization coupling and dispersion changes. The domination of nonlinear effects can be changed in the fundamental and second order modes according to the fiber geometry in order to generate a spectrally flat broadband source. Here we demonstrate the ability to generate a customized supercontinuum in three regimes of mode operation - dual mode, fundamental mode only and second order mode only - where spectral flatness and range are controlled.
Zbyszek Holdynski, Marek Napierala, Michalina Jozwik, Pawel Mergo, and Tomasz Nasilowski, "Highly birefringent dual-mode nonlinear fibers for customised supercontinuum generation," Proc. SPIE 10438, Emerging Imaging and Sensing Technologies for Security and Defence II, 1043803 (Presented at SPIE Security + Defence: September 13, 2017; Published: 6 October 2017); https://doi.org/10.1117/12.2278206.
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