Microwave-signal generating method and device based on excited brillouin scattering effect and optical frequency comb

A technology of stimulated Brillouin and scattering effects, applied in the field of microwave photonics, which can solve problems such as processing rate limitation

Active Publication Date: 2017-08-18
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of the processing rate of electronic devices in the device for generating signal sources by traditional ele

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  • Microwave-signal generating method and device based on excited brillouin scattering effect and optical frequency comb
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  • Microwave-signal generating method and device based on excited brillouin scattering effect and optical frequency comb

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Embodiment 1

[0024] The tunable laser is TSL-510 tunable laser from Santec Company, and the wavelength range of the laser is 1510nm~1630nm; the first dual parallel intensity modulator and the second dual parallel intensity modulator are MXIQ-LN-30-P-P from Photline Company , the bandwidth is 40GHz, and the working optical wavelength is 1530nm~1580nm, the half-wave voltage of the first Mach-Zehnder modulator and the second Mach-Zehnder modulator is 5.5V, and the half-wave voltage of the third Mach-Zehnder modulator The wave voltage is 15V; two sections of highly nonlinear optical fiber with the same properties from YOFC: the length is 1000m, the gain and loss peaks are 5dB, and when the optical carrier wavelength is 1550nm, the stimulated Brillouin gain spectrum linewidth is Γ B =30MHz, stimulated Brillouin frequency shift f b =9.1994GHz; the IO-G-1550-APC optical isolator produced by Thorlabs has an isolation greater than 40dB, and the working wavelength is 1530-1570nm; the intensity modu...

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Abstract

Provided is a microwave-signal generating method and device based on the excited brillouin scattering effect and the optical frequency comb in high nonlinear fibers. The invention belongs to the technical field of microwave photonics. The device comprises a tunable laser, a first coupler, a second coupler, a first circulator, a second circulator, a first high nonlinear fiber, an attenuator, a fourth coupler, a first photoelectric detector, a power divider, an intensity modulator, a fourth DC voltage regulator, a first double parallel mach-zehnder modulator, a fifth DC voltage regulator, a sixth DC voltage regulator, a seventh DC voltage regulator, a third circulator, a second high nonlinear fiber, a third coupler, a second photoelectric detector, a microwave amplifier, a second double parallel mach-zehnder modulator, a first DC voltage regulator, a second DC voltage regulator, a third DC voltage regulator, an isolator, a fifth coupler, a third photoelectric detector and a frequency analyzer. Due to the advantages of mode selection and positive feedback of a photoelectric oscillator, the microwave signals which are output by the device have the advantages of good spectrum purity and low noises.

Description

technical field [0001] The invention belongs to the technical field of microwave photonics, and in particular relates to a microwave signal generation method and device based on the stimulated Brillouin scattering effect in a highly nonlinear optical fiber and an optical frequency comb. Background technique [0002] With the development of modern optoelectronic information technology, high-quality microwave / millimeter wave signal sources have attracted more and more attention, and optoelectronic oscillators integrate electrical components and optical components, because they have microwaves that generate high frequency and low phase noise The characteristics of the signal have a variety of applications in Radio over Fiber (RoF) systems, optical fiber communication systems, radar and sensing. However, due to the limitation of the processing rate of electronic devices in the device for generating signal sources by traditional electrical means, and the electronic bottleneck eff...

Claims

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Application Information

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IPC IPC(8): G02F1/365G02F1/35
CPCG02F1/353G02F1/365
Inventor 董玮王悦张歆东
Owner JILIN UNIV
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