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...

The study of impulse response technology allows audio engineers to attempt to recreate the tonal characteristics of a certain device. The purpose of this project was to recreate a sonic representation of analog microphone pre amplifiers and acoustic spaces through the use of impulse response technology. By creating these impulses, the student will attain the sonic characteristics of professiona...

In terminals for free-space laser links, optical amplifiers boost transmit powers into the Watt range. As pre-amplifiers, they help obtaining sensitivities of a few ten photons/bit. Concepts and requirements for such applications are discussed. ©2005 Optical Society of America OCIS codes: (060.4510) Optical communications; (250.4480) Optical amplifiers

Ultra low-voltage (ULV) floating-gate (FG) differential amplifiers are presented. In this paper we present several different approaches to CMOS ULV amplifier design. Sinh-shaped and tanh-shaped transconductance amplifiers are described. Measured results are provided. Keywords— Floating-gate, low-voltage, low-power, lowvoltage amplifiers, analog floating-gate circuits.

This paper reviews the major contributions proposed in literature for implementing multi-band low noise amplifiers in CMOS technology. Concurrent, switched and switched concurrent low noise amplifiers are investigated. Advantages and drawbacks are also discussed. The article tries to offer good insights on the implementation of multi-band low noise amplifiers. Keywords-CMOS; low noise amplifier...

The need for high speed, wideband amplifiers is the driving force behind the development of the Current Feedback Amplifier (CFA). The CFA has significant advantages over conventional amplifiers in terms of slew rate performance and inherently wide bandwidth. This paper provides a review of the theory and design of current feedback amplifiers.

Current Feedback Amplifiers (CFA) are discussed in this report. Current Feedback Amplifiers employ the current mode of signal processing to achieve higher gain-bandwidth product and greater slew rates than those of a Voltage Feedback Amplifier (VFA). The Current Feedback Amplifier topology has an inherent advantage over that of the the Voltage Feedback Amplifier, wherein the amplifier gain can ...

We study the combined effects of dynamic gain saturation and two-photon absorption on the amplification of short pulses in semiconductor optical amplifiers and show that two-photon absorption can saturate the amplifier gain and limit the output pulse energies even for amplifiers with large gain saturation energies. We discuss the upper limits for the pulse energies obtainable from semiconductor...