scholarly journals Nonlinear Phenomena of Ultra-Wide-Band Radiation in a Photonic Crystal Fibre

2011 ◽  
Vol 2011 ◽  
pp. 1-6
Author(s):  
Rim Cherif ◽  
Mourad Zghal
Keyword(s):  
Photonic Crystal ◽  
Pulse Propagation ◽  
Stimulated Raman Scattering ◽  
Ultrashort Pulses ◽  
Wide Band ◽  
Supercontinuum Generation ◽  
Ultra Wide Band ◽  
Nonlinear Phenomena ◽  
Photonic Crystal Fibre ◽  
Highly Nonlinear

We report the results of a numerical and experimental analysis of femtosecond pulse propagation in a highly nonlinear photonic crystal fibre (PCF). The propagation of ultrashort pulses in PCF is studied taking into account the effects of dispersion, self-phase modulation, stimulated Raman scattering, and self-steepening. The interaction between linear and nonlinear effects is investigated in order to better understand the interplay of these effects leading to the supercontinuum generation. The initial stage of an ultra-wide-band supercontinuum generation under femtosecond pumping is pointed out. Details about the expansion of the blue and red sides of the supercontinuum due to transfer of energy to dispersive waves are revealed and experimentally confirmed. Our experimental results are compared to numerical solution of the nonlinear Schrödinger equation. Good agreement is found.

scholarly journals Supercontinuum Generation in photonic crystal fibers infiltrated with liquids

2020 ◽  
Vol 31 (1) ◽  
pp. 1
Author(s):  
Cao Long Van
Keyword(s):  
Photonic Crystal ◽  
Pump Beam ◽  
Pulse Propagation ◽  
Photonic Crystal Fibers ◽  
Supercontinuum Generation ◽  
Dispersive Media ◽  
Nonlinear Phenomena ◽  
High Brightness ◽  
The Rich ◽  
Crystal Fibers

In this paper we present the development of a new direction in so-called optofluidics , namely the research of photonic crystal fibers (PCF) infiltrated with liquids. In particular we concentrate on the flagship application of PCF, the process of Supercontinuum Generation (SG), in which injected monochromatic pulse may be dramatically broadened (spectrally), which creates a coherent beam generation of high brightness comparable to that of monochromatic lasers. The supercontinuum is formed when a collection of nonlinear processes act together upon a pump beam in order to cause severe spectral broadening of the original pump beam. Explanation of this process is based on numerical simulations for  Generalized Nonlinear Schrödinger equation (GNLSE) which describes the rich nonlinear dynamics of pulse propagation in nonlinear dispersive media.   All nonlinear phenomena involved in SG will be analyzed. We present specially activity of the Polish-Vietnamese Group from the beginning in 2016 to recent time in this domain.

Tailoring supercontinuum generation using highly nonlinear photonic crystal fiber

2012 ◽  
Vol 44 (6) ◽  
pp. 1889-1896 ◽  
Author(s):  
M.A. Hossain ◽  
Y. Namihira ◽  
M.A. Islam ◽  
S.M.A. Razzak ◽  
Y. Hirako ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Supercontinuum Generation ◽  
Crystal Fiber ◽  
Nonlinear Photonic Crystal ◽  
Highly Nonlinear
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