In this article,a highly nonlinear photonic crystal fiber with a pure silica core is designed and fabricated,of which the core diameter is 1.65μm,the air hole diameter 4.75μm,the space between the hole centers 5.35μm,the zero dispersion wavelength 1 120 nm and the dispersion at wavelength of 800 nm-88 ps/(nm.km).
Hermite-Gaussian functions have been used to calculate the zero-dispersion wavelength of hexagon HF, calculations show that when pitch is between 1.1 μm and 2.6 μm, the λ 0 of HF is around 1.55 μm, and the relation of pitch vs air hole diameter at λ 0 has been given.
This paper describes a high accuracy measurement system for measuring the chromatic dispersion of optical fiber. It's a frequency-domain phase shift system designed to minimize systematic errors in measurements of zero-dispersion wavelength, and it has the λ0 characterized with an expanded uncertainty of 0. 11nm(k=2).
The relation between the dispersion and the loss for optical pulse propagating without distortion near the zero dispersion point in the fiber with slowly decreasing dispersion is obtained by means of an extended nonlinear Schrodinger equatiton. Modulational instability in the fiber with slowly decreasing dispersion is analyzed. Because of the fourthorder dispersion,modulational instability is still existed when secondorder dispersion equals to zero.
By tuning the fs-pulsed Ti:Sapphire laser to the zero dispersion wavelength of the PCF, the spectral and temporal properties of the source are largely unaffected and hence this source can easily be used for MPLSM.
Compression of sub-nanojoule laser pulses using a commercially available photonic crystal fiber (PCF) with zero dispersion wavelength of 860?nm is discussed.
When β3 is negative and the zero dispersion wavelength is set at the longer wavelength side than the pump wavelength, such as around 2 μm, it is possible to convert the generated soliton into new components at the longer wavelength side over 2 μm.
To minimize the walk-off between two wavelengths, we chose the input signal and the desired output signal wavelengths, equally spaced on opposite sides of the zero dispersion wavelength of the fiber.
To minimize the walk-off problem between two wavelengths, we chose pump signal and control signal to be equally spaced on opposite sides of the zero dispersion wavelength of the fiber.
We discuss the effect of amplification of the signal wave for its frequency-degenerate two-wave interaction with pumping, when the field frequency is tuned to the "zero dispersion" point.
A wideband nonlinear scattering spectrum (1.1—1.9 um) is obtained in a multimodeoptical fiber pumped with an A-O Q-switched Nd:YAG laser at 1.06 um.The spectrum forms a goodquasicontinuum at the zero-material-dispersion range of the fiber.Discussion about the generationmechanism of the continuum is given.It shows that the continuum is generated by combined interac-tion of stimulated Raman scattering and four-photon mixing.
The zero dispersion wavelength of CsCl-type crystal is calculated under tight-binding approximation, with Coulomb interaction between the electron and the hole at the nearest neighbouring sites taken into account. It is shown that the material system can be looked upon as an ensemble of a series of polarization wave oscillators when we deal with the interaction of light and matter. The strengths of the polarization wave oscillator are calculated. The material dispersion and the zero dispersion wavelengths f...
The chromatic dispersion measurement using phase shift technique is discussed In this paper. The spectral dispersion of single-mode fiber is measured and the zero chromatic dispersion wavelength, the slope of dispersion vs. wavelength are obtained. The chromatic dispersion of multimode fiber is also measured. The theoretical analysis of its accuracy is presented in the paper and the influence of random noise to phase shift measurement is calculated.The chromatic dispersion measurements have been carried on ...