We numerically and experimentally investigate the high-speed small-signal cross-gain
modulation (XGM) characteristics of a quantum-dot (QD) semiconductor optical amplifier …

We perform a theoretical analysis based on density-matrix equations to determine the
nonlinear susceptibilities and gain coefficients for a quantum-dot semiconductor optical …

We experimentally demonstrate wavelength conversion of coherent signals in an
InAs/InGaAsP/InP columnar quantum dot semiconductor optical amplifier by using low …

Bi-directionally operated amplifiers enabling efficient utilization of transmission wavelengths
are promising candidates in densely integrated photonic circuits for future cost-effective …

P-doped and undoped quantum dot (QD) semiconductor optical amplifiers (SOAs) having a
similar chip gain of 22–24 dB are compared with regard to their static and dynamic …

The static and dynamic characteristics of degenerate four-wave mixing in a quantum dot
semiconductor optical amplifier are investigated. A high chip conversion efficiency of 1.5 dB …

We demonstrate an all-optical wavelength conversion of a return-to-zero differential phase-
shift keying (RZ-DPSK) signal using four-wave mixing in a quantum-dot semiconductor …

We investigated the growth of vertically coupled In0. 75Ga0. 25As quantum dots (QDs) by
varying the GaAs spacer thickness (d). Vertically-aligned triple-layer QDs of uniform size and …

All-optical packet switching can overcome limitations of electronic switches in terms of power
consumption, speed, cost, and footprint. Switch architectures combining wavelength …

We demonstrate multi wavelength processing in a broad band 1550 nm quantum dash
optical amplifier. Two 10Gbit/s signals, spectrally separated by 30nm are individually …