All-optical microwave multiplier based on non-linear polarization rotation effect

Abstract

The invention discloses an all-optical microwave multiplier based on the non-linear polarization rotation effect. The all-optical microwave multiplier comprises a first continuous photo-semiconductor laser device, a first polarization controller, an electro-optical intensity modulator, a microwave signal source, a second continuous photo-semiconductor laser device, a second polarization controller, an optical amplifier, a third polarization controller, an optical coupler, a non-linear photoelectric device, a band-pass filter, a polarization beam splitter, an optical circulator, an optical fiber grating, a first photoelectric detector and a second photoelectric detector, which are connected in series. According to the all-optical microwave multiplier based on the non-linear polarization rotation effect, the technical problems that the traditional photo-generated microwave and up-conversion scheme is difficult to get rid of the dependence on a high-frequency external microwave source, the wavelength of an optical carrier of a generated signal is limited, the conversion efficiency is low and even a high-frequency microwave signal is difficultly generated and the like, can be solved.

Description

technical field [0001] The invention belongs to the field of microwave photonics, and more specifically relates to an all-optical microwave frequency multiplier based on the nonlinear polarization rotation effect of highly nonlinear photoelectric devices. Background technique [0002] The International Telecommunication Union has launched the collection of 4G mobile communication technology standards in 2008, which officially opened the prelude to the new generation of broadband wireless mobile communication technology standards and industry development competition. With the popularization of information network applications and the increase in people's demand for interactive and multimedia information services, the convenient and flexible wireless communication network has become the most promising member of the access network, but at the same time, The huge amount of information also poses a great challenge to the load capacity of the current frequency band. In order to av...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an all-optical microwave frequency multiplier based on the nonlinear polarization rotation effect, which can solve the problem that the existing optical microwave and up-conversion schemes are difficult to get rid of the dependence on high-frequency external microwave sources and generate signals. The carrier wavelength is limited, the conversion efficiency is low, and the generation of VHF microwave signals is difficult and other technical problems

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