Optical buffer is an important component in optical switching and optical signal processing. In this paper, we present a
novel all-optical buffer based on nonlinear polarization rotation induced by injection current of semiconductor optical
amplifier. With Mueller matrix, we theoretically investigate the change of polarization state induced by nonlinear
polarization rotation in semiconductor optical amplifier. The operation of the proposed optical buffer at 2.5Gb/s is
experimentally setup. The loading and reading operations with 1024bit with this optical buffer are demonstrated.
Polarization maintenance is taken into account to give the optimum operation condition
The semiconductor optical amplifiers (SOAs) are employed in all optical networking and all optical signal processing due to the excellent nonlinearity and high speed. The gain recovery time is the key parameter to describe the response speed of the SOA. The relationship between the gain dynamics and a few operation parameters is obtained in this article. A few simple formula and some simulations are demonstrated, from which, a few methods to improve the response speed of the SOA can be concluded as following, lengthening the active area, or lessening the cross area, increasing the injection current, increasing the probe power, operating with a CW holding beam.
KEYWORDS: Dispersion, Waveguides, All optical signal processing, Photonic crystal fibers, Birefringence, Optical signal processing, Interferometers, Control systems, Nonlinear optics, Signal processing
A squeezed elliptical hole air-silica photonic crystal fibre is reported for all optical signal processing, which
has some novel properties of high birefringence and high nonlinearity, according with tailorable dispersion at 1550nm.
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