High stability supercontinuum generation in lead silicate SF57 photonic crystal fibers

This manuscript presents a ring-core Bragg Fiber (RC-BF) for orbital angular momentum (OAM) modes propagation and supercontinuum generation. The proposed RC-BF is composed of alternating layers of soft glasses SF57 and LLF1 to render high nonlinearity to the fiber. Mode analysis using fullvectorial finite element method resulted in obtaining HE/EH modes to support vector modes as well as orbital angular momentum modes. The optimized fiber supports 22 OAM modes and exhibits a zerodispersion wavelength (ZDW). The small effective area of Fiber 3 aided in achieving the highest nonlinearity, γ = 91.51 W −1 km −1 . A near-infrared supercontinuum is generated with a 35 dB flatness over a bandwidth of ∼1087 -2024 nm in a 20 cm long RC-BF using a chirp-free hyperbolic secant pulse of width 200 fs and peak power of 5 kW.INDEX TERMS Bragg fiber, finite element method, OAM modes, zero-dispersion wavelength, supercontinuum generation.

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“…( 4) [45], where nonlinear refractive index of the material is denoted by n 2 . The n 2 for the proposed SF57 is 4.1 × 10 −19 m 2 /W [42].…”

Section: Ring Core-bragg Fiber Designmentioning

confidence: 99%

“…The Sellmeier equation and coefficients of both the glasses are presented in the following Eq. ( 1) and Table 2, respectively [40], [42].…”

Section: Ring Core-bragg Fiber Designmentioning

confidence: 99%

Orbital Angular Momentum Mode Propagation and Supercontinuum Generation in a Soft Glass Bragg Fiber

et al. 2023

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“…The refractive index of the fiber core is lower than that of the cladding region, so then the light could be bound in the fiber core by photonic bandgap effect. All kinds of new products of PCF come into being as the development of manufacturing technology of PCF, which are not only applied to the conventional optical communication technology, but also widely used in the field of optical devices, such as fiber laser, [8] fiber amplifier, [9] supercontinuum, [10] dispersion compensation, [11] polarization rotator, [12] biosensors, [13] and other fields.…”

Section: Introductionmentioning

confidence: 99%

Theoretical simulation of a polarization splitter based on dual-core soft glass PCF with micron-scale gold wire

Liu

Wang

et al. 2016

Chinese Phys. B

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A polarization splitter based on dual-core soft glass photonic crystal fiber (PCF) filled with micron-scale gold wire is proposed. The characteristics of the polarization splitter are studied by changing the structural parameters of the PCF and the diameter of the gold wire with the finite element method (FEM). The simulation results reveal that the coupling length ratio of the soft glass-based PCF is close to 2 and the corresponding curve is more flat than that of the silica-based PCF. The broadband bandwidth is 226 nm in which the extinction ratio is lower than −20 dB by the soft glass-based PCF, i.e., from 1465 nm to 1691 nm which is competitive in the reported polarization splitters, and the bandwidth is just 32 nm by the silica-based PCF. The insertion loss by our polarization splitter is just 0.00248 dB and 0.43 dB at the wavelength of 1.47 µm and 1.55 µm. The birefringence is obviously increased and the coupling length is decreased by filling gold wire into the soft glass-based or the silica-based PCF. Also the birefringence based on the silica-based PCF is much larger than that based on the soft glass-based PCF whether or not the gold wire is introduced. The fabrication tolerance of the polarization splitter is also considered by changing the structural parameters. The polarization splitter possesses broad bandwidth, low insertion loss, simple structure and high fabrication tolerance.

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“…Owing to the interplay of the dispersion effects and self-phase or cross-phase modulation, many interesting and useful nonlinear optical phenomena, such as modulation instability, [1,2] optical solitons, [3] supercontinuum generation, [4][5][6] pulse compression, [7,8] etc., can occur in optical fibers. Typically, optical wave breaking, as an important phenomenon, is thought to occur in a normal dispersion optical fiber and generally manifests itself in the appearance of oscillation structures in the wings of the pulse and, concomitantly, in the sidelobes on the pulse spectrum.…”

Section: Introductionmentioning

confidence: 99%

Ultrashort pulse breaking in optical fiber with third-order dispersion and quintic nonlinearity

et al. 2014

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High stability supercontinuum generation in lead silicate SF57 photonic crystal fibers

Cited by 10 publications

References 24 publications

Orbital Angular Momentum Mode Propagation and Supercontinuum Generation in a Soft Glass Bragg Fiber

Orbital Angular Momentum Mode Propagation and Supercontinuum Generation in a Soft Glass Bragg Fiber

Theoretical simulation of a polarization splitter based on dual-core soft glass PCF with micron-scale gold wire

Ultrashort pulse breaking in optical fiber with third-order dispersion and quintic nonlinearity

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