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Microwave photon multi-frequency binary phase coded signal production device and method

A technology of phase-encoded signals and microwave photons, which is applied in photonic quantum communication, electromagnetic wave transmission systems, electrical components, etc., can solve problems such as high cost of implementation, difficulty in simultaneously generating phase-encoded signals, and signal bandwidth limitations, and achieves convenient control, The effect of large-scale expansion of frequency number and strong stability

Active Publication Date: 2018-06-12
EAST CHINA NORMAL UNIV
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Problems solved by technology

Although the phase-encoded signal generated by the above method can be tuned in a wide range of frequencies, it is difficult to simultaneously generate multiple phase-encoded signals of different frequencies. In order to solve this problem, P. A device for simultaneous generation of encoded signals (P.Ghelfi, F.Scotti, F.Laghezza, and A.Bogoni, IEEE J.QuantumElectron.48, 1151(2012)), the method first generates low-frequency phase encoded signals in the electrical domain, Then it is up-converted to multiple different frequencies at the same time through microwave photonics, thus realizing the generation of multi-frequency phase-encoded signals
However, in this method, the low-frequency phase-encoded signal is still generated in the electrical domain, and its signal bandwidth is still limited by the electronic bottleneck.
In order to realize the generation of all-optical multi-frequency microwave phase-encoded signals, D.Zhu et al. proposed a multi-frequency phase-encoded signal generation method based on multi-frequency light sources, polarization modulation, and balanced detection (D.Zhu, W.Xu, Z. Wei, and S.Pan, Opt.Lett.41,107(2016)), D.Wu et al proposed a multi-frequency phase encoding signal generation method based on multi-frequency light sources, dual output intensity modulation, and balanced detection (14.D.Wu , et.al., Opt.Exp.25, 14516(2017)), but related reports only realized the generation of two different frequency phase encoding signals, and the two multi-frequency phase encoding signal generation methods are based on multi-frequency light source and balanced detection, the implementation cost is higher

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  • Microwave photon multi-frequency binary phase coded signal production device and method

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Embodiment 1

[0049] In the present embodiment, the wavelength of the laser is 1550.55nm, and the microwave signal generator produces a microwave signal of 5GHz. The half-wave voltage of the double-drive Mach-Zehnder modulator used is 3.5V, and the coded signal generator produces an amplitude of V 1 = 3.5V binary pseudo-random sequence, adjust the amplitude of the DC power supply amplitude and the microwave signal generated by the microwave signal generator, so that the conditions shown in the formula (6) are met, that is, m = 3.054, That is V 0 = 3.402V, V DC = 1.104V. figure 2 It is the spectrogram of the multi-frequency binary phase encoding signal generated simultaneously at the photodetector place in this embodiment. It can be seen that at the input microwave signal frequency of 5 GHz, at the double frequency of 10 GHz, at the triple frequency of 15 GHz, the modulation with the same power is generated Spectrum. image 3 (a) is the 5GHz binary phase encoding signal waveform (solid ...

Embodiment 2

[0051] In this embodiment, the wavelength of the laser is 1550.55nm, and the microwave signal generator produces a microwave signal of 8GHz. The half-wave voltage of the double-drive Mach-Zehnder modulator used is 3.5V, and the encoded signal generator produces a binary pseudo-random sequence whose amplitude is 3.5V. , adjust the amplitude of the DC power supply and the amplitude of the microwave signal generated by the microwave signal generator, so that the conditions shown in the formula (6) are satisfied, that is, m=3.054, That is m=3.054, That is V 0 = 3.402V, V DC = 1.104V. Figure 5 It is the spectrogram of the multi-frequency binary phase encoding signal simultaneously generated at the photodetector place in this embodiment. It can be seen that at the input microwave signal frequency of 8 GHz, at the double frequency of 16 GHz, at the triple frequency of 24 GHz, the modulation with the same power is generated Spectrum. Figure 6 (a) is the 8GHz binary phase encod...

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Abstract

The invention relates to a microwave photon multi-frequency binary phase coded signal production device and method, and belongs to the technical field of the microwave signal production. The multi-frequency binary phase coded signal production device comprises a laser, a polarization controller, a dual-driver Mach-Zehnder modulator, a coded signal generator, a baseband signal amplifier, a microwave signal generator, a DC power supply and a photoelectric detector; a single-frequency optical signal output by the laser is modulated by the coded signal produced by the coded signal generator and the microwave signal produced by the microwave signal generator at the dual-driver Mach-Zehnder modulator; and the multi-frequency binary phase code signal is generated at the photoelectric detector bycontrolling the microwave signal amplitude, the code signal amplitude and a bias point of the modulator. The device and method disclosed by the invention are simple, and can realize the production ofthe multi-frequency binary phase coded signal.

Description

technical field [0001] The invention relates to the technical field of microwave signal generation, in particular to a microwave photon multi-frequency binary phase encoding signal generation device and method. Background technique [0002] With the continuous development of radar technology and the continuous improvement of people's requirements for radar range, resolution and measurement accuracy, the traditional single-carrier frequency rectangular pulse radar has become more and more difficult to meet the demand. In order to solve the problem of ranging accuracy and distance resolution Due to the contradiction with the operating distance, a new type of pulse compression radar has emerged. [0003] Pulse compression radar transmits wide pulses to increase the average power of the transmitted signal to ensure the speed measurement accuracy, speed resolution and sufficient operating distance of the radar system, and the pulse compression method is used at the receiving end ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/556H04B10/54H04B10/532H04B10/70
CPCH04B10/532H04B10/541H04B10/5561H04B10/5563H04B10/70
Inventor 陈阳
Owner EAST CHINA NORMAL UNIV
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