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This work investigates a novel phase noise averagers to suppress IFWM-induced phase noise of RZ-DPSK signals. Both analytical and simulation results confirm that the IFWM-induced phase noise will be converged, even after an ultra-long transmission.
A WDM-PON recycling incoming light to transmit upload stream has been proposed. Effect of Rayleigh scattering and uneven energy distribution are evaluated to achieve >60km bidirectional communication carrying 10Gb/s download and >300Mb/s upload data traffic.
We report a novel passively Q-switched fiber laser using an electro-absorption modulator (EAM) as a saturable absorber. The fast response time of the EAM enables the Q-switched fiber laser to operate at high repetition rate.
We study the dynamics of associating a two-component atomic condensate into a condensate of heteronuclear molecules. We compare the mean-field results with a full quantum mechanical treatment, emphasizing the effects of atomic population imbalance.
We found that an EDFA which adopted the EDF with enhanced active erbium area can mitigate short-term transient response for sub-micro seconds caused by the traffic of high speed optical packets without any external controlling.
The resonant behavior of metallic nano-structures is simulated using local mesh refinement of the FDTD method in 3 Dimensions. The influence of shape and tip geometry on the resonance structure and intensity of the optical fields is examined.
We present the results of simulations performed to characterize the influence of various factors on energy throughput and resolution of a NSOM tip having a subwavelength aperture offset from the apex.
We present the numerical analysis of the performances of a SOA-based architecture performing, with a simple optical filtering operation, the all-optical channel extraction from a 0.1THz, 1ps FWHM pulses sequence without any pattern-dependence.
We present a highly sensitive terahertz Faraday measurement scheme with the detection sensitivity of Faraday rotation as small as 1 mrad. The scheme was applied to n-doped Si to examine the carrier density and mobility.
We present the accurate characterization of the pulse contrast ratio using the decorrelation of high-dynamic-range third-order correlation traces. Experimental measurements with femtosecond and chirped picosecond pulses confirm the necessity of this method.
We present a theoretical approach including Coulomb scattering to InAs/GaAs quantum dot lasers. In agreement with experiments we find strongly damped relaxation oscillations. We show the crucial importance of Coulomb interaction for this characteristic feature.
Passive mode-locking of inhomogeneously broadened lasers is studied in three regimes: pure SAM, soliton mode-locking, and with SPM and positive GDD. Scaling features of mode-locking characteristics with the gain linewidth, dispersion, and nonlinearities are presented.
We propose a simple ultra-short optical pulse reconstruction method based on Hilbert transform temporal interferometry. The complex profile of a weak picosecond pulse after dispersion by a 100-m SMF is accurately reconstructed using this technique.
We investigate supercontinuum generation from a Schott imaging fiber taper. Supercontinua simultaneously generated from two fibers of an imaging taper were demonstrated.
The width of an ultraviolet pulse is compressed to sub-20 fs from 100 fs using a prism compressor by compensating the group delay dispersion among the Raman sidebands generated by coherent Raman scattering.
Capabilities of time-resolved interferometry to study ultrafast phenomena in solids are explored by measuring nanometer-scale transient deformations on laser-excited surfaces and ultrafast evolution of small refractive index changes in the bulk of dielectrics.
We propose and demonstrate a pulse compression technique using a symmetric pressure-gradient hollow fiber. This technique improves the spatial and spectral qualities of multi-mJ femtosecond laser pulses spectrally-broadened by self-phase modulation.
A single-photon source based on single CdSe quantum-dot fluorescence in a chiral-photonic-bandgap liquid-crystal host manifests itself in observed fluorescence antibunching. Chiral-photonic bandgap structures will provide deterministically handed, circular-polarized fluorescence, even for emitters without a dipole moment.
Quantum well structures in germanium and nanophotonic structures in dielectrics and metals promise future optics, optoelectronics and electronics, all possibly combined in one silicon compatible platform. Challenges, approaches and recent progress are summarized.
We present single-shot direct measurements of nonlinear refractive index temporal dynamics as effective way to determine instantaneous and non-instantaneous Raman contribution to n2 in molecular gases in the presence of high-intensity femtosecond laser pulses.
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