Broadband supercontinuum generation in photonic crystal fibers using cosh-Gaussian pulses at 835 nm wavelength

Chaotic dynamics and supercontinuum generation with cosh-Gaussian pulses in photonic-crystal fibers

“…In this paper, we presented results from the numerical study of SC generation in three telecommunication optical windows. The novelty here is the application of cosh-Gaussian input optical pulses which have recently [12][13][14][15][16][17] been associated with the possibility of generating flatter SC spectrum than the standard Gaussian pulses.…”

“…Chaotic dynamics and supercontinuum generation with cosh-Gaussian pulses in photonic-crystal fibers sources for dense wavelength division multiplexing (WDM) applications by spectral slicing of broadband SC spectra. An extremely important aspect of generating SC for telecommunication applications is tailoring dispersion to achieve flat, anomalous dispersion with small slope and a zero crossing near or at the pump wavelength [12,13]. Pumping near a zero dispersion wavelength (ZDW) with higher order nonlinearity not only reduces its power requirement but also smoothens the generation of SC power spectra.…”

“…Numerous investigations of SC generation in PCFs have been conducted using a 'sech' or Gaussian input pulse whose temporal profiles and qualitative features of SPM induced spectral broadening are quite similar. Recently, it has been shown that under certain conditions sinh-Gaussian pulses and cosh-Gaussian pulses can enhance the efficiency of this effect [12,17]. Therefore, here we investigate SC generation using the sum of two cosh-Gaussian pulses in order to generate broad and, at the same time, flat spectrum of the PCF output in the telecommunication windows.…”

Broadband supercontinuum generation in lead silicate photonic crystal fibers employing optical pulses of 50 W peak power

“…The SC generation in PCFs has been the subject of intense experimental and theoretical investigations during last fifteen years [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. SC generation is a complex process of spectral broadening of femtosecond, picosecond or nanosecond optical pulses, which undergo a number of nonlinear interactions such as modulation instability (MI), self-phase modulation (SPM), fourwave mixing (FWM), stimulated Raman scattering (SRS), selfsteepening or soliton fission in an optical nonlinear medium.…”