Share Email Print

Optical Engineering

Numerical analysis of aperiodic photonic crystal fiber structures for supercontinuum generation
Author(s): Annalisa Di Tommaso; Marco De Sario; Luciano Mescia; Francesco Prudenzano
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

An unconventional photonic crystal fiber (PCF) is designed in order to obtain supercontinuum (SC) generation. The distance of the air hole rings is not constant, but it follows the Thue-Morse (ThMo) aperiodic sequence. The spectral broadening of high power femtosecond (fs) input pulses in anomalous dispersion regime is investigated by means of a homemade computer code, based on the generalized nonlinear Schrödinger equation (GNLSE) and implemented via the symmetrized split-step Fourier method (S-SSF). A lot of ThMo PCF transversal sections are simulated, and the one providing the flattest and the widest spectrum is identified and further refined by varying the operating conditions. Three different peak powers (5, 10, 15 kW) and three different pulse durations (40, 50, 100 fs) are investigated at the pump wavelength λP = 1064  nm. The novel ThMo PCF proposed in this paper exhibits a SC figure of merit Φ = 16, very high with respect to the state of the art pertaining to fs input pulses.

Paper Details

Date Published: 14 March 2012
PDF: 8 pages
Opt. Eng. 51(3) 035003 doi: 10.1117/1.OE.51.3.035003
Published in: Optical Engineering Volume 51, Issue 3
Show Author Affiliations
Annalisa Di Tommaso, Politecnico di Bari (Italy)
Marco De Sario, Politecnico di Bari (Italy)
Luciano Mescia, Politecnico di Bari (Italy)
Francesco Prudenzano, Politecnico di Bari (Italy)

© SPIE. Terms of Use
Back to Top