A colloquium on the influence of versatile class of saturable nonlinear responses in the instability induced supercontinuum generation

Nithyanandan, K.; Raja, R. Vasantha Jayakantha; Uthayakumar, T.

doi:10.1016/j.yofte.2013.04.002

Cited by 25 publications

(14 citation statements)

References 71 publications

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“…Therefore, in modeling the pulse propagation, one must use the saturation function for the nonlinear refractive index as in the Refs. [51][52][53][54][55]. One way of doing is by replacing the nonlinear refractive index corresponding to the cubic Kerr term with saturating index term.…”

Section: Theoretical Modelmentioning

confidence: 99%

See 1 more Smart Citation

Multistability and switching in oppositely-directed saturated coupler

Nithyanandan

Ali

Porsezian

et al. 2018

Optics Communications

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Section: Theoretical Modelmentioning

confidence: 99%

“…The other means is to derive the governing equation from Maxwell's equation with the incorporation of appropriate saturation function. As the nonlinear saturation model for the NIM is already available in the literature [56], we adopt such model with suitable modification pertaining to ODC as follows [51][52][53][54][55][56].…”

Section: Theoretical Modelmentioning

confidence: 99%

Multistability and switching in oppositely-directed saturated coupler

Nithyanandan

Ali

Porsezian

et al. 2018

Optics Communications

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“…These kind of fibers can be of potential interest in various nonlinear applications. Among the various nonlinear applications, one of the most advanced frontiers in nonlinear optics is the generation of intense ultra-broadband spectrum known as supercontinuum generation (SCG) [34][35][36][37]. SCG is a complex nonlinear phenomenon featuring dramatic spectral broadening of intense light pulses passing through a nonlinear media.…”

Section: Introductionmentioning

confidence: 99%

A theoretical study on the supercontinuum generation in a novel suspended liquid core photonic crystal fiber

Sharafali

Nithyanandan

2020

Appl. Phys. B

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We theoretically propose a novel liquid filled suspended core photonic crystal fiber as a new class of micro-structure optical fiber for ultra broad supercontinuum generation. We emphasize the advantage of liquid infiltration in enhancing the fiber nonlinearity. To further enhance the nonlinearity of the liquid infiltrated fibers, we introduce a suspended liquid core photonic crystal fiber which significantly elevates the fiber nonlinearity through reduced effective area. A comparative study on the continuum generated in conventional microstructured optical fiber (without suspension effect) and the suspended core microstructured optical fiber is performed. A broad continuum is numerically demonstrated through the suspended core fiber, which is substantially broader than the fiber without suspension effect. Thus, we propose a new means to enhance the nonlinearity beyond the intrinsic material dependence. The underlined suspended liquid core photonic crystal fiber can be a new class of fibers for next generation of broadband laser sources.

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“…For example, it may lead to the formation of two stable soliton pulses with the same time duration [25]. Saturation of the nonlinear Kerr response has also been shown to modify the modulational instability of continuous waves [26][27][28][29] and the propagation of coherent states in optical fibers [30]. The existence and stability of defect solitons in systems with saturable nonlinearity and parity-time symmetry has been recently demonstrated [31,32].…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal transmission through a saturable nonlinear asymmetric dimer

2014

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We investigate the nonreciprocal diodelike behavior of a dimer with an asymmetric on-site potential and a saturable nonlinearity. The dimer is coupled to linear side chains. The spectra of transmission and the rectifying factor are analytically obtained using a backward iteration of the set of discrete nonlinear Schrödinger equations used to model the wave propagation through the nonlinear dimer. We show that the windows of bistable behavior leading to a pronounced nonreciprocal diodelike transmission become wider and displaced to higher input field intensities as the saturation coefficient increases. Further, saturation of the nonlinear response has opposite impacts on the rectifying action over short- and long-wavelength input signals within the second bistability window. In the first window, the rectifying action is not compromised by the saturation, thus showing that a weak contribution of high-order susceptibilities to the nonlinear response can improve the efficiency of the nonreciprocal transmission. The rectifying action of a dimer with an asymmetric nonlinearity is also discussed.

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A colloquium on the influence of versatile class of saturable nonlinear responses in the instability induced supercontinuum generation

Cited by 25 publications

References 71 publications

Multistability and switching in oppositely-directed saturated coupler

Multistability and switching in oppositely-directed saturated coupler

A theoretical study on the supercontinuum generation in a novel suspended liquid core photonic crystal fiber

Nonreciprocal transmission through a saturable nonlinear asymmetric dimer

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