Spatial two-phase all-optical switching device based on graphene and XPM action and modulation method

Abstract

The invention provides a spatial two-phase all-optical switching device based on graphene and XPM action and a modulation method. The device comprises a first laser, a first half-wave plate, a first polarization beam splitting cube, a chopper, a second polarization beam splitting cube, a second half-wave plate, a focusing lens, a third polarization beam splitting cube, a graphene nonlinear opticalunit, a first reflector, a third half-wave plate, a second reflector and a fourth polarization beam splitting cube; the graphene nonlinear optical unit is located between the third polarization beamsplitting cube and the fourth polarization beam splitting cube. The invention further provides a spatial two-phase all-optical switching modulation method based on the device. According to the deviceand method of the invention, in-phase and out-of-phase modulation of detection signal light is innovatively realized by adjusting pumping power under an optical path system, and the purpose of spatialdouble-phase all-optical switching is achieved.

Description

technical field [0001] The invention relates to the field of space all-optical switches, in particular to a space two-phase all-optical switch device based on the synergistic effect of graphene and XPM and a modulation method thereof. Background technique [0002] With the rapid development of social economy and Internet technology, people's demand for information is also increasing day by day, leading to an exponential growth in the amount of communication information, and people's demand for information transmission and processing speed is never-ending, and demand determines technological leaps. In the existing information processing system, although the information is transmitted in the optical cable through the optical signal to achieve long-distance and large-capacity transmission, each node must perform E-O-E conversion, because the electro-optic modulator and the photoelectric Due to the limited modulation and detection rate of the detector, the processing speed is mu...

AI Technical Summary

Problems solved by technology

The existing technology uses the photothermal and thermo-optic effects of graphene to cause the change of the resonant wavelength of the micro-fiber ring cavity to realize the optical switch, but because of the complex structure and the difficulty of preparation, large-scale applications cannot be realized; the existing technology also uses graphene optical The bistable effect is used to realize the all-optical switch, but because the graphene is embedded in the finely modulated resonant cavity, the process needs to be extremely fine and the structure is complex

It can be seen that the existing all-optical switches generally have technical problems of complex structure, difficult preparation and simple function.

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