A multistage operational transconductance amplifier with a feedforward compensation scheme which does not use Miller capacitors is introduced. The compensation scheme uses the positive phase shift of left-half-plane (LHP) zeroes caused by the feedforward path to cancel the negative phase shift of poles to achieve a good phase margin. A two-stage path increases further the low frequency gain whi...

This paper describes a design methodology for determining the number of stages in a cascaded time amplifier to minimize the area consumption. The total area consumption is categorized into three parts, which allows mathematical analysis and optimization to be performed. A combination of the proposed mathematical analysis and 2D mapping can determine the number of stages to minimize the area con...

A model is reported allowing one to investigate the TCP/IP performance of a Semiconductor Optical Amplifier (SOA) base switch with 10x10Gbps wavelength striped traffic. Bit Error Rate measurements and Packet Error Rate equivalences were assessed to demonstrate TCP throughput analysis in a cascaded SOA for an optical link.

Different schemes of dispersion management for cascaded transmission systems composed of standard monomode fibers (SMFS) and dispersion compensating fibers have been studied considering the most essential boundary conditions for practical network design. Alternating ordering of the compensation sections is found to improve considerably the eye opening penalty for high amplifier spacings of 120 km.

A numerical study about the generation of extreme events in lumped Raman fibre amplifier is performed. Evolutions of continuous or pulsed signals are analysed using crosscorrelations, spectra and probability density functions. For pulsed signals, the phase evolution is also explored. Both signal and Stokes cascaded waves are considered.

Wavelength multiplexing (WDM) technology along with optical amplifiers is used for optical communication systems in S-band, C-band and L-band. To improve the overall system performance Hybrid amplifiers consisting of cascaded TDFA and EDFA with different gain bandwidths are preferred for long haul wavelength multiplexed optical communication systems. This paper deals with statistical analysis o...

BURRUS, c. A., YOUNG, M. G., ORON, M., and KILLER, B. I.: ‘Balanced operation of a GaInAs/GaInAsP multiple-quantum-well integrated heterodyne receiver’, Photonics Technol. Lett., 1990, 2, pp. 577-580 OKOSHI, I. : ‘Exact noise-figure formulas for optical amplifiers and amplifier-fibre cascaded chains’. OAA ’90, Monterey, Aug. 1990, No. PDP-11 RW, s., and HORIUCHI, Y.: ‘Use of an optical amplifie...

In recent years, there has been an increasing demand for high-speed digital circuits at low power consumption. This paper presents a design of input stage of Operational Amplifier i.e cascode differential amplifier using a standard 65nm CMOS Technology.A comparison betweem gate-driven, bulk-driven and cascode bulk driven bulk-driven differential amplifier is described. The Results demonstrate t...

We demonstrate a simple and practical single-stage ultrafast laser amplifier system that operates at a repetition frequency from 1 to 10 kHz, with millijoule pulse energy and as much as 13 W of average power. The repetition rate can be adjusted continuously from 1 to 10 kHz by new all-solid-state pump laser technology. This is to our knowledge the highest average power ever obtained from a sing...