نتایج جستجو برای: distributed amplifier

تعداد نتایج: 286044  

Journal: :IEEE design & test 2022

Editor’s notes: This article presents a method for designing bandpass (BP) negative group delay (NGD) active circuits. The circuit topology consists of distributed BP NGD passive cascaded with microwave amplifier. design is validated through simulations and measurements prototype implementation...

Journal: :IEEE Journal on Selected Areas in Communications 1990
Haim Kobrinski Mario P. Vecchi Matthew S. Goodman Evan L. Goldstein Thomas E. Chapuran Janet M. Cooper Moshe Tur Chung-En Zah Serafin G. Menocal

This paper discusses system aspects and describes experimental demonstrations of nanosecond wavelength tuning in laser diode structures. Both tunable transmitters and tunable filters are considered. The dependence of the refractive index on the carrier density in semiconductors is exploited to obtain fast wavelength tuning. Experimentally, switching times of < 15 ns have been demonstrated in a ...

2000
John Joseph

A distnbuted amplifier based 5-tap tramversai filter using MESFET implementation of the Gilbert Cell as the tap weights has been designed for use as a fractonally spilfed adjustable equaluer in high speed optical c~mmunication systems. The effective tramconductance of the Gilbert Celi can be adjusted h m negative to positive values and therefore the transversal filter designed has adjustable po...

2008
Keang-Po Ho

The characteristic function of soliton phase jitter is found analytically when the soliton is perturbed by amplifier noise. In additional to that from amplitude jitter, the nonlinear phase noise due to frequency and timing jitter is also analyzed. Because the nonlinear phase noise is not Gaussian distributed, the overall phase jitter is also non-Gaussian. For a fixed mean nonlinear phase shift,...

2011
G Vieux A Lyachev X Yang B Ersfeld J P Farmer E Brunetti R C Issac G Raj G H Welsh S M Wiggins D A Jaroszynski

Raman amplification in plasma has been proposed to be a promising method of amplifying short radiation pulses. Here, we investigate chirped pulse Raman amplification (CPRA) where the pump pulse is chirped and leads to spatiotemporal distributed gain, which exhibits superradiant scaling in the linear regime, usually associated with the nonlinear pump depletion and Compton amplification regimes. ...

Journal: :Optics Letters 2021

A machine learning framework predicting pump powers and noise figure profile for a target distributed Raman amplifier gain is experimentally demonstrated. We employ single-layer neural network to learn the mapping from profiles figures. The obtained results show highly-accurate designs predictions, with maximum error on average of ~0.3dB. This provides comprehensive characterization thus valuab...

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