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An optical delay variable between 0 to 161 ps with GHz bandwidth is demonstrated in an InGaAsP quantum-well semiconductor optical amplifier and modeled by population oscillation and nearly degenerate four-wave-mixing effects for the first time.
Cross-phase-modulation-induced pulse delay or advancement in an optical fiber is analyzed. It is shown that XPM and group-velocity mismatch can lead to controllable pulse delay or advancement with negligible frequency shift.
In this paper we propose a new technique that enables optical single sideband generation for optical subcarrier multiplexing. A high sideband suppression ratio is achieved across the full RF spectral band.
Dipole-dipole interactions between Rb atoms at internuclear distances 100-1000 Aring are probed at noncryogenic conditions, based on femtosecond laser parametric four wave mixing and wavepacket modulation. Theoretical analysis of the novel results is offered.
A balanced optical-RF phase detector for the extraction of low-jitter RF-signals from optical pulse trains, which is robust against drifts and photodetector nonlinearities, is presented. Sub-10 fs in-loop relative timing jitter is demonstrated.
We show that the giant Kerr nonlinearity in the regime of electromagnetically induced transparency in vapor can give rise to the formation of Thirring-type spatial solitons, which are supported solely by cross-phase modulation.
We report a polarization-independent 80 Gb/s optical demultiplexer based on cross-phase modulation in 2 meters of bismuth-oxide fiber. We show error- and penalty-free performance even when the polarization state is randomly scrambled.
Nonlinear phase noise (NPN) in polarization-division-multiplexed DPSK systems is analyzed. It is found that the absolute NPN is inversely proportional to the square-root of channel spacing, while the differential NPN depends on the launch condition.
We propose a new label recognition system for photonic packet routing using self-routing of labels. Whole binary-coded labels modulated in phase can be recognized with a circuit consisting of tree-structure passive asymmetric-waveguide X-junctions.
A simple non-iterative electric field retrieval method using a sinusoidally driven optical phase modulator is proposed. The method is validated by demonstrating accurate characterization of picosecond pulses used in telecommunication.
Error free pulse format conversion from return to zero 2 ps pulses to non return to zero at 10 Gbit/s is achieved by exploring the properties of a semiconductor optical amplifier with integrated saturable absorber.
Utilizing soft-lithography based nanofluidics and silicon nanophotonics we demonstrate ultracompact tunable spectral filtering. Liquid based addressing and high refractive index modulation of a single row of holes within a planar photonic crystal is demonstrated.
We demonstrate the longest unrepeatered and uncompensated SOA-based transmission of 16times10 Gbit/s channels over 140 km single mode (G.652) fiber. We exploit the DPSK modulation format, two commercial SOA devices and a frequency-periodic narrow optical filter.
We investigate wavelength conversion by cross-phase modulation in the presence of strong dispersion and two photon absorption in highly nonlinear singlemode As2Se3 fiber, achieving conversion over a span of 30 nm.
We present experimental and theoretical investigation of modulation instability process in large normal dispersion regime leading to visible continuum generation. The influence of the input power and polarization state of the pump wavelengths are analyzed.
EIT-based atomic clocks built as active oscillating loops can be compact and low-power, if the loop is closed by current modulation of VCSEL. The clock performance is shown to critically depend on the VCSEL properties.
Preliminary measurements of the electron spin relaxation rate (T1) in charged GaAs quantum dots are made using a nonlinear optical phase-modulation spectroscopy technique. T1 approaches 46 musec at zero magnetic field.
We present a phase nonuniformity correction method for two-dimensional spatial light modulators within pulse shapers using only an incoherent broadband source and an optical spectrum analyzer. Compensation results are studied with XFROG and optical-CDMA.
We demonstrate a high-speed green GaN light-emitting-diode for plastic optical fiber communication. By use of n-type doping in barrier layers, superior performance of modulation-speed and output-power to undoped control has been observed.
A triple-sensor multiplexed fiber-optic displacement sensor is reported, which is based on optical frequency-modulated continuous-wave (FMCW) interference and frequency-division multiplexing. The advantages include high accuracy (0.08 mum) and long dynamic range (1000 mum).
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