Independent and incoherent double-laser low-phase-noise 16-multiplying-frequency signal generation device

A low-phase-noise, frequency-doubling signal technology, applied to electrical components, power oscillators, etc., can solve problems such as low frequency multiplication factor and high phase noise

Inactive Publication Date: 2013-07-10
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: using an incoherent dual light source structure to generate millimeter wave signals, the frequency multiplication factor is low and high phase noise will be introduced

Method used

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  • Independent and incoherent double-laser low-phase-noise 16-multiplying-frequency signal generation device
  • Independent and incoherent double-laser low-phase-noise 16-multiplying-frequency signal generation device
  • Independent and incoherent double-laser low-phase-noise 16-multiplying-frequency signal generation device

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Embodiment approach 1

[0020] An independent incoherent dual laser low phase noise 16 frequency multiplication signal generation device, such as figure 1 The shown device includes: laser one 1, laser two 2, radio frequency signal generator 3, phase shifter 4, IQ modulator one 5, IQ modulator two 6, comb filter one 7, photodetector one 8, DC blocker 9 , phase modulator 10 , comb filter 2 11 , comb filter 3 12 , binary baseband modulation signal 13 , intensity modulator 14 , transmission fiber 15 , photodetector 2 16 .

[0021] The specific connection method is: the output terminals of laser one 1 and laser two 2 are connected to the optical input terminal of IQ modulator one 5, the output terminal of radio frequency signal generator 3 is connected to the radio frequency signal input terminal of IQ modulator one 5 and the phase shifter 4 The input end of the IQ modulator one 5 is connected to the optical input end of the IQ modulator two 6, the output end of the phase shifter 4 is connected to the rad...

Embodiment approach 2

[0025] An independent incoherent dual laser low phase noise 16 frequency multiplication signal generation device, such as figure 1 The shown device includes: laser one 1, laser two 2, radio frequency signal generator 3, phase shifter 4, IQ modulator one 5, IQ modulator two 6, comb filter one 7, photodetector one 8, DC blocker 9 , phase modulator 10 , comb filter 2 11 , comb filter 3 12 , binary baseband modulation signal 13 , intensity modulator 14 , transmission fiber 15 , photodetector 2 16 .

[0026] The specific connection method is: the output terminals of laser one 1 and laser two 2 are connected to the optical input terminal of IQ modulator one 5, the output terminal of radio frequency signal generator 3 is connected to the radio frequency signal input terminal of IQ modulator one 5 and the phase shifter 4 The input end of the IQ modulator one 5 is connected to the optical input end of the IQ modulator two 6, the output end of the phase shifter 4 is connected to the rad...

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Abstract

The invention relates to an independent and incoherent double-laser low-phase-noise 16-multiplying-frequency signal generation device, solving the problems that frequency doubling factors are low and high phase noise is introduced when an incoherent dual-light-source structure is adopted to generate millimeter wave signals. According to the device, the independent dual-light-source structure is adopted, an 8-multiplying-frequency signal is generated by utilizing two IQ (in-phase / quadrature) modulators, and a forward modulation technique involving a phase modulator, a photoelectric detector and a DC (direct current) break is combined to generate a 16-multiplying-frequency signal by utilizing three comb filters, so that the millimeter wave signals with high frequency doubling factors and low phase noise are easily obtained under the incoherent dual-light-source structure, and the device is especially suitable for fields such as optical fiber communication, optical fiber sensing, microwave photons and Radio over Fiber (RoF).

Description

technical field [0001] The invention relates to an independent incoherent dual laser low phase noise 16-frequency signal generating device, which is especially suitable for the fields of optical fiber communication, optical fiber sensing, microwave photon, Radio over Fiber (RoF) and the like. technical background [0002] Microwave photonics combines microwave and photonics to become a new technical field, which opens a magical and promising door for the integration of photonic technology, microwave and millimeter wave in the development of long-distance broadband communication. In recent years, technologies such as optical generation, transmission, processing, filtering, and frequency conversion of microwave / millimeter wave signals have produced important application values ​​in the fields of Radio over Fiber (RoF), broadband communication and measurement, and 3G mobile communication. Since the transmission distance of millimeter waves in space is limited, how to realize th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B19/14
Inventor 宁吉粤牟霄寒
Owner BEIJING JIAOTONG UNIV
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