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Remotely pumped EDFA-based 40-Gb/s downstream and 10-Gb/s upstre... ... upstream transmission implemented by quadrature phase-shift keying (QPSK) transceiver and reflective semiconductor optical amplifier (RSOA)-based intensity modulation direct detection (IM-DD). Transmissions of the 40-Gb/s QPSK downstream, using a Mach- ...
Self-accelerating and self-breathing Bessel-like beams along arb... ... -dimensional (3D) spiraling trajectories. The beams have an overall Bessel-like profile in transverse dimensions; however, the intensity of their central main lobe breathes while traveling along a curved trajectory. Such beams can be readily generated ...
Real-time video signal transmission over a terahertz communicati... ... are presented. A discussion of the bandwidth limit of the detecting circuit is presented. Using direct on – off-keying modulation and intensity detection, the transmission of digital video signal with a data rate of 2.5 Mb/s is demonstrated. Pseudo-random ...
Modulation-free laser frequency offset locking using buffer gas-... ... of a laser using buffer gas-induced resonance. Our scheme excludes the limitation of low diffraction efficiency and laser input intensity when an acousto-optic modulator is applied to shift the laser frequency from the resonance. We show the stabilization ...
Photoluminescence and thermoluminescence properties of SnO2 nano... ... in the photoluminescence (PL) and thermoluminescence (TL) intensities of the glass. PL emission spectra are identified in the blue and green regions, and a fourfold increase in emission intensity may be observed in the presence of embedded SnO2 na
Investigations of ionization-induced injection of laser wake fie... ... ;bubble" regime of laser wakefield acceleration (LWFA), it is found that there is an upper limit for laser intensity of ionization-induced injection. In the plane perpendicular to the laser polarization, when the laser pulse is linearly polarized, ...
Analytical model of amplitude-weighted array technology in formi... ... desired spatial radiation pattern in the far field could be built by applying the analytical solutions of radiation amplitudes of array elements. To check the validity of this formula as well as the proposed technique, an annular intensity distribution
Influence of substrate surface roughness on light scattering of ... ... their surface roughness, from fine to very rough, and coated with a single TiO2 layer or a SiO2/TiO2 multilayer. The light scattering intensity increases as the substrate roughness increases. Scanning electron microscopy reveals that the number of nodul
Generation of Laguerre-Gaussian beam from end-pumped and c-cut N... ... the position of focused pump beam relative to laser crystal. The pumping light reached the laser crystal has circular and solid intensity profile. The laser is compact and stable, and the obtained LG01 beam power reaches 202 mW with ~25% slope efficiency ...
Incorporating a Linearly Chirped Fiber Grating We describe a simple method to generate wavelength-tunable pulses by using a semiconductor optical amplifier (SOA) as an intensity modulator and a gain medium. Wavelength tunable pulses at a repetition rate of 4.8 GHz have been generated.

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