Multi-phase-locked filter structure-based optoelectronic oscillator

A technology of optoelectronic oscillator and filter structure, applied in solid-state lasers and other directions, can solve the problems of unable to calibrate the bottom noise of the signal source, unable to calibrate the signal source analyzer, unable to calibrate the bottom noise, etc., to achieve superior phase noise and superior phase noise index. , The effect of near-carrier phase noise improvement

Active Publication Date: 2017-02-01
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0005] The object of the present invention is to provide a kind of optoelectronic oscillator based on multiple phase-locked filtering structure, solve the following problems that the existing signal source analyzer cannot calibrate: 1, due to the limitation of the noise performance of the signal source itself, the signal source cannot be calibrated Bottom noise; 2. After the signal source analyzer uses the cross-correlation algorithm, the bottom noise cannot be calibrated; 3. The bottom noise in the entire Fourier analysis frequency range cannot be calibrated

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  • Multi-phase-locked filter structure-based optoelectronic oscillator

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[0024] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0025] Such as figure 1 As shown, the optoelectronic oscillator based on the multiple phase-locked filter structure provided by this embodiment includes: DFB laser 1, electro-optic modulator 2, photodetector 3, first mixer 4, YIG oscillator 5, first lock Phase filter loop 6, second mixer 7, harmonic generator 8, third mixer 9, second phase-locked filter loop 10, 500MHz surface acoustic wave oscillator 11, fourth phase-locked filter loop 12. 100MHz voltage controlled oscillator 13, third phase-locked filter loop 14 and 10M...

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Abstract

The invention discloses a multi-phase-locked filter structure-based optoelectronic oscillator, which comprises a positive feedback loop with a plurality of phase-locked filter loops and a lock loop. According to the multi-phase-locked filter structure-based optoelectronic oscillator, near carrier frequency phase noise of the optoelectronic oscillator is improved and side-mode suppression of the single-loop structure optoelectronic oscillator is improved.

Description

technical field [0001] The present invention relates to optoelectronic oscillators. More specifically, it relates to an optoelectronic oscillator based on a multiple phase-locked filter structure. Background technique [0002] The signal source analyzers currently on the market mainly include imported models such as E5052A / B, FSUP and FSWP. The components of these signal source analyzers mainly include phase detectors, internal reference sources, digital loops, high-speed AD and digital processors, etc. . Due to the use of digital cross-correlation technology, the bottom noise of this type of signal source analyzer is very superior, and only one input port of the source to be tested is designed, which makes the phase noise test system verification according to the national military standard GJB / G3414-98 The measurement of the bottom noise by the phase detection bridge method in the Regulations cannot be realized, so the frequency source with superior phase noise performanc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 阎栋梁柳丹
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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