We demonstrate the first asynchronous 2x2 optical packet switch capable of synchronizing, buffering, and forwarding 10 Gb/s packets generated from independent transmitters with better than 99% packet recovery measured using a burst mode receiver. ©2010 Optical Society of America OCIS codes: (060.1810) Buffers, couplers, routers, switches, and multiplexers; (230.4480) Optical amplifiers

Tuberculosis outbreaks originating in prisons, mines, or hospital wards can spread to the larger community. Recent proposals have targeted these high-transmission institutional amplifiers by improving case detection, treatment, or reducing the size of the exposed population. However, what effects these alternative proposals may have is unclear. We mathematically modeled these control strategies...

The design of frequency-tunable amplifiers is investigated and the tradeoff between linearity, efficiency and tunability is revealed. Several tunable amplifiers using various varactor diode topologies as tunable devices are designed by using loadpull techniques and their performances are compared. The amplifier using anti-series distortion-free varactor stack topology achieves 38% power added e...

using a new numerical model, the pump-to-signal relative intensity noise (rin) transfer in singlepumpfiber optical parametric amplifiers for low modulation frequencies is investigated. the model includesfiber loss, pump depletion, as well as the gain saturation, and therefore, it can describe the practicalcircumstances associated with various applications of fiber optical parametric amplifiers....

Two packaged low noise amplifiers for the 0.3-4 GHz frequency range are described. The amplifiers can be operated at temperatures of 300-4 K and achieve noise temperatures in the 5 K range (<0.1 dB noise figure) at 15 K physical temperature. One amplifier utilizes commercially available, plastic-packaged SiGe transistors for first and second stages; the second amplifier is identical except it u...

There are two figures of merit used to assess the suitability of a nonlinear material for all-optical switching devices [8]. If the loss is dominated by linear absorption, W = A n l a must be larger than unity. In PTS, W > 1 for I > 20MW/cm2, based on attenuation coefficients estimated from those reported by Thakur, Frye and Greene [9]. In the case where two-photon absorption dominates the loss...

The Data Vortex photonic packet switching architecture is designed to be a low-latency topology with minimal node complexity and a high degree of scalability [1,2]. The nodes from which this system is assembled require widebandwidth switching devices with very fast transitioning and minimal signal degradation. Semiconductor optical amplifiers (SOAs) have been selected as the most promising acti...

In this paper an all-optical serial-to-parallel converter (SPC) based on the symmetric Mach-Zehnder (SMZ) interferometers operating at 80 Gb/s is presented. The proposed SPC is simulated and in particular its crosstalk (CXT) characteristics is investigated for a range of different system parameters such as signal and control pulse powers, delay time between the control pulses, and the main phys...

Cellular Neural Networks (CNN) are artificial neural networks displaying multidimensional arrays of cells and local interconnections among the cells. Since in a CNN all the cells are identically, the qualitative behavior of the entire network can be studied via stability results obtained for the interconnected systems. The finite switching speed of amplifiers and communications time between cel...

This paper proposes a high gain and wide bandwidth amplifiers with numerical approach. It is improved that the low-frequency characteristics and the range of gain refers to direct-coupling. The gain is controlled with numerical approach,which makes the gain stability. It is easy to control the gain of the multistage amplifier with adopting uniform gain control voltage. It is useful for numerica...