Seismic energy dispersion compensation by multi-scale morphology

Multi-bunch Energy Compensation*

To obtain a luminosity of 1034cm-2sec-’ in a TeV Linear Collider (TLC), it will probably be necessary to accelerate many bunches in one filling of the RF structure. This has the effect of extracting more energy from the structure and thus enhances the overall efficiency of the accelerator. However, this leads to many problems. First, the train of bunches is subject to cumulative beam breakup tr...

Dispersion Compensation

D to the steady growth in demand for bandwidth, the days when optical fiber was viewed as having unlimited capacity have come to an end. Dispersion, noise, and nonlinearities pose substantial channel impairments that need to be overcome. As a result, over the last decade, signal processing has emerged as a key technology to the advancement of low-cost, high-data rate optical communication syste...

Energy-Efficient Chromatic Dispersion Compensation for Coherent Fiber-Optic Receivers

DSP-based chromatic dispersion compensation accounts for a large part of the overall power dissipation in fiber-optic receiver ASICs. We have implemented and evaluated compensation filters based different design methods using a MATLAB-based coherent fiber-optic system model in respect to compensation performance, filter length, and fixed-point aspects. Possible power savings when taking into ac...

9 Dispersion Compensation Devices

Dispersion Compensation Devices

Dispersion compensation plays a key role in generation, amplification and propagation of femetosecond pulses. In the dispersive medium, the pulse can be broaden or compressed depending on the sign of chirp and dispersion. To obtain the ultrashort pulses, the pulse group delay (GD) should have about frequency independence after the dispersion compensation. Especially to compress a pulse to near ...