Supercontinuum generation in visible to mid-infrared region in square-lattice photonic crystal fiber made from highly nonlinear glasses

Roy, Sourabh; Chaudhuri, Partha Roy

doi:10.1016/j.optcom.2009.05.062

Cited by 41 publications

(19 citation statements)

References 43 publications

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“…So, though we might be getting a flattened dispersion PCF, the design will not be suitable for practical applications as the losses are very high. However, for high power nonlinear applications like SCG and so forth, the pump wavelength is the wavelength of zero dispersion wavelength (ZDW) [24,25]. For all the above cases, the values of ZDW come out to be 1.120 m, 1.132 m, and 1.134 m and 1.136 m, respectively.…”

Section: Loss Of the Structure And Itsmentioning

confidence: 99%

“…The corresponding losses around these wavelengths are 3.60 × 10 2 dB/m, 6.25 × 10 1 dB/m, 1.06 × 10 1 dB/m, and 1.81 dB/m, respectively. As high power nonlinear applications like SCG require even less than a meter long of the fiber [25], practical applications of the designed fiber are feasible especially with = 6 and with = 2.6 m as shown in Figure 5 6 respectively. The above data shows that applications like broadband smooth SCG (where only a meter long of the fiber is required) are possible with = 6 and with = 2.3 m. The above results imply that the losses can be reduced by increasing , but the dispersion nature will not remain the same.…”

Section: Loss Of the Structure And Itsmentioning

confidence: 99%

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Circular Photonic Crystal Fibers: Numerical Analysis of Chromatic Dispersion and Losses

Maji

Chaudhuri

2013

ISRN Optics

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Detailed numerical analysis for dispersion properties and losses has been carried out for a new type of Photonic crystal fiber where the air-holes are arranged in a circular pattern with a silica matrix called as Circular Photonic Crystal Fiber (C-PCF). The dependence of different PCF geometrical parameters namely different circular spacings, air-hole diameter and numbers of air-hole rings are carried out in detail towards practical applications. Our numerical analysis establishes that total dispersion is strongly affected by the interplay between material dispersion and waveguide dispersion. For smaller air-filing fraction, adding extra airhole rings does not change dispersion much whereas for higher air-filling fraction, the dispersion nature changes significantly. With proper adjustment of the parameters ultra-flattened dispersion could be achieved; though the application can be limited by higher losses. However, the ultra-flat dispersion fibers can be used for practical high power applications like supercontinuum generation (SCG) by reducing the loss at the pumping wavelength by increasing the no of air-hole rings. Broadband smooth SCG can also be achieved with low loss oscillating near-zero dispersion fiber with higher no of air-hole rings. The detail study shows that for realistic dispersion engineering we need to be careful for both loss and dispersion.

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Section: Loss Of the Structure And Itsmentioning

confidence: 99%

Section: Loss Of the Structure And Itsmentioning

confidence: 99%

Circular Photonic Crystal Fibers: Numerical Analysis of Chromatic Dispersion and Losses

Maji

Chaudhuri

2013

ISRN Optics

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“…As a reference glass we used the commercially available glass SF-57, which has a successful track record in the development of nonlinear PCFs [20] and in simulations of nonlinear PCFs based on soft glasses [21][22][23]. PBG-08 and SF-57 show similar transmission windows in the range 0.5 -4.8 μm (Fig.…”

Section: Properties Of Lead-bismuth-galate Glassmentioning

confidence: 99%

Supercontinuum generation up to 2.5 μm in photonic crystal fiber made of lead-bismuth-galate glass

et al. 2010

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In this paper we report on successful supercontinuum generation extending from the near to the mid-infrared region in the range 700-2500 nm in a micro-structured fiber made of lead-bismuth-galate glass and pumped in the femtosecond regime with a wavelength of 1540 nm. The flatness of 5 dB is observed in most of the registered spectrum 1000 -2500 nm. The improved spectral and thermo-physical properties of this custom made lead-bismuth-galate glass against tellurite and commercially available heavy oxide SF-57 glasses are presented.

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“…Usually, the SC can cover the visible and near-infrared spectrum [3,4]. However, many applications need the spectrum could be broadened further towards mid-infrared region.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling the ultra-broadband mid-infrared supercontinuum generation in the As2Se3 photonic crystal fiber

Zheng¹,

Wen²,

Zhao³

et al. 2015

Proceedings of the First International Conference on Information Sciences, Machinery, Materials and Energy

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Abstract:In this paper, ultra-broadband mid-infrared (MIR) supercontinuum (SC) generation ranging from 2 to 15 μm in As 2 Se 3 photonic crystal fiber (PCF) was investigated numerically by multipole method and the adaptive split-step Fourier method. By choosing different hole sizes and the pitch parameters of the As 2 Se 3 PCF, the optimized nonlinear coefficients and dispersion profile of the fiber in the mid-infrared regime can be obtained. With the ultrafast pump laser centered around 4.3 μm, the broadband SC from 2 to 15 μm can be generated. In the normal dispersion regime, the flatness of the SC can be improved. Moreover, the pulse durations of the pump laser have positive influence on the spectrum broadening as well as the pump peak power.

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Supercontinuum generation in visible to mid-infrared region in square-lattice photonic crystal fiber made from highly nonlinear glasses

Cited by 41 publications

References 43 publications

Circular Photonic Crystal Fibers: Numerical Analysis of Chromatic Dispersion and Losses

Circular Photonic Crystal Fibers: Numerical Analysis of Chromatic Dispersion and Losses

Supercontinuum generation up to 2.5 μm in photonic crystal fiber made of lead-bismuth-galate glass

Numerical modelling the ultra-broadband mid-infrared supercontinuum generation in the As2Se3 photonic crystal fiber

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