We describe experimental investigation of pulsed output from a multi-wavelength fiber ring laser incorporating low frequency phase modulation with large modulation amplitude. The Erbium-doped fiber (EDF) ring laser generated more than 8 wavelength channels with the help of a phase modulator operating at 26.2 kHz and a periodic intra-cavity filter. For most cases, the laser output is pulsed in t...

Simulations of ultra-long (10 mm) semiconductor optical amplifier’s induced optical chirp (cross-phase modulation), with posterior conversion to amplitude modulation by proper filtering, show promising results for wavelength conversion with pulse re-amplifying and re-shaping in 10 Gbps and 20 Gbps. The dependences on filter bandwidth and optical input power (high, medium and low levels) are ana...

BACKGROUND Novel pulse photoplethysmographic-derived indices have been proposed as tools to measure autonomic nervous system (ANS) modulation in anesthetized and awake patients, but nowadays their experimental validation is lacking. The authors aimed to investigate the ability of pulse photoplethysmographic amplitude (PPGA), ANS state (ANSS), and ANSS index (ANSSi) to measure changes of ANS mod...

In order to improve the effect of English teaching, this paper combines with intelligent algorithm construct an interactive teaching system for engineering education. process data processing, specifies time that a single pulse needs be maintained and controls counter maintain certain number FPGA clocks. Moreover, processing is completed in digital domain, modulation method quadrature amplitude ...

Acoustic pattern recognition is important for bringing together males and females in many insect species. We used phonotaxis experiments on a walking compensator to study call recognition in the katydid Neoconocephalus affinis, a species with a double-pulsed call and an atypically slow pulse rate for the genus. Call recognition in this species is unusual because females require the presence of ...

Animal experiments suggest that cortical sensory representations may be remodelled as a consequence of changing synaptic efficacy by timing-dependent associative neuronal activity. Here we describe a timing-based associative form of plasticity in human somatosensory cortex. Paired associative stimulation (PAS) was performed by combining repetitive median nerve stimulation with transcranial magn...

LIU, JIA. Transmitter-based Multiple Access Interference Rejection and Diversity Techniques for Code-division Multiple Access Systems. (Under the direction of Dr. Alexandra Duel-Hallen) For the downlink of direct sequence code-division multiple access (DS-CDMA) systems, transmitter (Tx)-based multiple access interference (MAI) cancellation techniques, termed multiuser precoding, and Tx-based di...

The nitrogen-vacancy center (NVC) in a diamond is promising platform for Floquet engineering. Using the synchronized readout, we investigate NVC's state driven by Carr-Purcell sequence large-amplitude ac magnetic field. We observe dynamics represented as Bessel functions up to 211th order systematic and quantitative agreement with theoretical model. Furthermore, numerical calculations show that...