Dispersion compensation by a liquid lens (DisCoBALL)

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...

Physical compensation of phase curvature in digital holographic microscopy by use of programmable liquid lens.

Quantitative phase measurements obtained with digital holographic microscopes are strongly dependent on the optical arrangement of the imaging system. The nontelecentric operation provides phase measurements affected by a parabolic phase factor and requires numerical postprocessing, which does not always remove all the perturbation. Accurate phase measurements are achieved by using the imaging ...

Dispersion compensation in atom interferometry by a Sagnac phase

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 ...