Xinliang Zhang

TL;DR: A novel all-optical differentiator that carries out the first-order temporal derivation of optical intensity variation at high speed using a semiconductor optical amplifier and an optical filter serving as an optical phase modulator and a frequency discriminator.

TL;DR: In this paper, the authors proposed and demonstrated several all-optical signal processing technologies, including wavelength conversion (WC), leading/trailing edge detection, and logic gates based on a semiconductor optical amplifier (SOA) and a detuning optical bandpass filter (OBF).

TL;DR: A sharply bent multimode silicon waveguide is proposed and experimentally demonstrate by introducing a pair of mode converters based on the eigenmode conversion between straight and bent waveguides, and the particle swarm optimization is adopted to engineer the geometry.

TL;DR: All-optical two line-four line encoder and two bit-wise comparator of RZ data streams at 40Gb/s based on cross gain modulation (XGM) and four wave mixing (FWM) in three parallel SOAs is proposed and experimental demonstrated.

TL;DR: In this article, a tunable sub-gigahertz bandwidth MPF based on an ultrahigh quality factor silicon microring resonator is proposed and experimentally demonstrated, where a full width at half-maximum bandwidth of 170 MHz is achieved thanks to the ultrahigh total quality factor as 1.14 × 106.