Kim P. Hansen

TL;DR: An optical fiber having a longitudinal direction and a cross-section perpendicular thereto, said fiber in a cross section comprising: (a) a core region (11) having a refractive index profile with the highest as discussed by the authors nc, and (b) a cladding region comprising cladding features having a center-to-center spacing, Λ, and a diameter, d, of around 0.4Λ or larger, wherein nc and d are adapted such that the fiber exhibits zero dispersion wavelength of a fundamental mode in the wavelength range from 1530 nm to 1640

TL;DR: The growth and enzyme production by Trichoderma reesei Rut C-30 using different lignocellulosic materials as carbon source were investigated and it was found that endoglucanase and endoxylanse activities were produced throughout the cultivations, whereas α-arabinosidase was induced late during the cultivation.

TL;DR: All-fiber chirped pulse amplification using an air-core photonic bandgap fiber is shown, for the first time to the authors' knowledge, and can potentially be used to obtain ultra-high pulse peak powers.

TL;DR: In this article, the femto and picosecond pulses delivered by the amplifier are coupled into two different photonic crystal fibers and obtained the highest output power of 5 W with a spectrum ranging from below 500 nm up to above 1800 nm.

TL;DR: Continuous-wave wavelength conversion through four-wave mixing in an endlessly single mode photonic crystal fiber is demonstrated and phasematching is possible at vanishing pump power in the anomalous dispersion regime between the two zero-dispersion wavelengths.