Microwave photon frequency mixing method and multifunctional microwave photon frequency mixer

An optical mixer and microwave photon technology, which is applied in optical fiber transmission, optical fiber radio, multi-frequency modulation transformation, etc., can solve the problems that the mixing function of microwave photon mixers has not been seen, and cannot be used universally, so as to improve processing Ability, the effect of improving conversion efficiency

Active Publication Date: 2015-02-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the structures of existing microwave photonic mixers with different functions are completely different, and it is impossible

Method used

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  • Microwave photon frequency mixing method and multifunctional microwave photon frequency mixer
  • Microwave photon frequency mixing method and multifunctional microwave photon frequency mixer
  • Microwave photon frequency mixing method and multifunctional microwave photon frequency mixer

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Embodiment Construction

[0023] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0024] The structural principle of the multifunctional microwave photon frequency mixing of the present invention is as follows: figure 1 shown. As shown in the figure, the optical carrier signal output by the laser is divided into two paths through the optical beam splitter. The upper channel passes through the first electro-optical modulation and sideband selector to modulate the radio frequency signal and select one of the first-order sidebands. Suppose the optical carrier frequency is ω c , the frequency of the modulated RF signal is ω R , then the first-order lower sideband signal obtained by the first photoelectric modulation and sideband selector can be expressed as E S =A -1 exp(ω c- ω R )t, where A -1 is the magnitude of the sideband signal. Similarly, the drop channel modulates the local oscillator signal and selects one of the first-...

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Abstract

The invention discloses a microwave photon frequency mixing method, and belongs to the technical field of microwave photonics. The frequency mixing method involves respectively performing photoelectric modulation on radiofrequency signals and local oscillator signals to be mixed, and extracting one first-order sideband signal from modulation signals, obtaining radio frequency first-order sideband signals and local oscillator first-order sideband signals, and performing photoelectric modulation on the two to enable the frequencies of applied optical carrier waves to be the same; and respectively taking the radio frequency first-order sideband signals and the local oscillator first-order sideband signals as the radiofrequency signal input and local oscillator signal input of a 90-DEG light frequency mixer, and performing photoelectric detection on the output signals of the 90-DEG light frequency mixer to obtain frequency mixed signals. The invention also discloses a multifunctional microwave photon frequency mixer. According to the invention, multiple different frequency mixing functions can be simultaneously realized, the stray is small, the linearity is high, and the conversion efficiency is high. Therefore, the method and the frequency mixer are suitable for frequency mixing of large-octave microwave signals.

Description

technical field [0001] The invention relates to a frequency mixing method, in particular to a microwave photon frequency mixing method and a multifunctional microwave photon mixer, belonging to the technical field of microwave photonics. Background technique [0002] Microwave mixers are one of the most commonly used devices in microwave systems. Traditional microwave mixers are mostly based on electronic technology, and often have disadvantages such as low conversion efficiency, low isolation between local oscillator and RF port, low operating frequency, narrow operating bandwidth, and large signal distortion. Due to the increasing shortage of low-frequency spectrum resources and the excellent performance of high-frequency work, microwave systems are gradually advancing to millimeter waves, submillimeter waves, and even THz bands. In this context, in order to meet the system application requirements, the mixer also needs to have the characteristics of high frequency, broad...

Claims

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Application Information

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IPC IPC(8): H04B10/548H04B10/2575H03D7/16
Inventor 潘时龙唐震宙薛敏薄磊闫旭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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