Title :
Ge-Doped Microstructured Multicore Fiber for Customizable Supercontinuum Generation
Author :
Modotto, Daniele ; Manili, Gabriele ; Minoni, Umberto ; Wabnitz, Stefan ; De Angelis, Costantino ; Town, Graham ; Tonello, Alessandro ; Couderc, Vincent
Author_Institution :
Dipt. di Ing. dell´´Inf., Univ. degli Studi di Brescia, Brescia, Italy
Abstract :
Supercontinuum generation in a multicore fiber in which several uncoupled cores were doped with dissimilar concentrations of germanium was studied experimentally. Germanium doping provided control over the separation between the zero-dispersion wavelength and the 1064-nm wavelength of a Q-switched Nd:YAG pump laser. Supercontinua generated independently in each core of the same piece of fiber displayed clear and repeatable differences due to the influence of germanium doping on refractive index and four-wave mixing. The spectral evolution of the subnanosecond pump pulses injected into the different cores was accurately reproduced by numerical simulations.
Keywords :
Q-switching; germanium; multiwave mixing; optical fibres; solid lasers; supercontinuum generation; Nd:YAG pump laser; Q switched; customizable supercontinuum generation; four wave mixing; microstructured multicore fiber; refractive index; uncoupled cores; wavelength 1064 nm; zero dispersion wavelength; Dispersion; Doping; Germanium; Multicore processing; Optical pumping; Supercontinuum generation; Supercontinum generation; fiber nonlinear optics; four-wave mixing;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2011.2175211
