We propose that nanomaterials are used for fibers.A novel nano-InP doped fiber has been fabricated by the method of modified chemical vapor deposition(MCVD).It has been measured that the doping concentration of phosphorus element is 0.1%.The relationship between refractive index and the wavelength is obtained by fitting experimental data to Sellmeier equation.Dispersion of the fiber has been calculated in the wavelength range of 1.2-1.6 μm.As the wavelength varies from 1.20 μm to 1.60 μm,dispersion parameter D increases but is always negative.It has been found that the dispersion of nano-InP doped fibers is strongly changed compared with standard single-mode fibers,due to the nano-InP dopant which leads to a higher refractive index difference.
We experimentally demonstrate amplitude squeezed soliton utilizing intensity-dependent self-phase mod- ulation in an asymmetric Sagnac interferometer.The system,whose components are connected via ferrule connector/physical connection(FC/PC)fiber connectors,constitutes all-fiber configuration to generate squeezed soliton.Soliton amplitude reduction measured by homodyne detection is near 4.0 dB below the shot-noise level.Optimal squeezing fields in both simple and compact all-fiber configuration are obtained.
To authenticate the identity and distribute the private keys of users based on the stream media cryptographic ...
LIAO Wei LIU Gang HOU Bin ZHANG Ru (School of Sciences, Beijing University of Posts and Telecommunications, Beijing 100876, China) (School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)
There are prominent nonlinear characteristics that we hope for the semiconductor nano-clusters doped fiber. Refractive index of fiber core can be effectively changed by adulteration. This technology can provide a new method for developing photons components. Because the semiconductor nano-cluster has quantum characteristics, Based on first-order perturba- tion theory and classical theory of fiber, we deduced refractive index expressions of fiber core, which was semiconductor nano-cluster doped fiber. Finally, third-order nonlinear coefficient equation was gained. Using this equation, we calculated SMF-28 fiber nonlinear coefficient. The equation shows that new third-order coefficient was greater.
