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Photoelectric oscillator on basis of stimulated Brillouin scattering amplification effects and method for regulating photoelectric oscillator

A technology of stimulated Brillouin and optoelectronic oscillators, applied in solid-state lasers and other directions, can solve problems such as limiting the application range of optoelectronic oscillator microwave signal sources and limiting the tuning performance of output microwave signals.

Pending Publication Date: 2017-05-31
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the currently reported schemes, a laser is used, and the tuning properties of the laser limit the tuning performance of the output microwave signal, which limits the application range of these optoelectronic oscillator microwave signal sources

Method used

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  • Photoelectric oscillator on basis of stimulated Brillouin scattering amplification effects and method for regulating photoelectric oscillator
  • Photoelectric oscillator on basis of stimulated Brillouin scattering amplification effects and method for regulating photoelectric oscillator
  • Photoelectric oscillator on basis of stimulated Brillouin scattering amplification effects and method for regulating photoelectric oscillator

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no. 1 example

[0037] Please refer to figure 1 , the present embodiment provides an optoelectronic oscillator 1000 based on the stimulated Brillouin scattering amplification effect, which includes a first laser 100, a circulator 110, an optical fiber unit 120, a second laser 130, a phase modulator 140, a tunable attenuation device 150 , photodetector unit 160 , tunable filter 170 , coupler 180 and electric amplifier 190 .

[0038] In this embodiment, the first laser 100 is an Agilent narrow-linewidth tunable laser (Agilent lightwave measurement system 8164B) with both wavelength and power tunable, and its output wavelength range is 1527.60-1565.5 nm, and its output power range is -13 ~6dBm. In this embodiment, the output wavelength of the first laser 100 is set at 1550 nm, and the output power is set at 5 dBm.

[0039] In this embodiment, the circulator 110 has three ports which are A port, B port and C port respectively, and the signal transmission direction thereof is counterclockwise. ...

no. 2 example

[0060] Please refer to Figure 5 This embodiment provides a method for adjusting an optoelectronic oscillator based on the amplification effect of stimulated Brillouin scattering, which is applied to the optoelectronic oscillator based on the amplification effect of stimulated Brillouin scattering provided in the first embodiment of the present invention. The methods include:

[0061] Step S200: acquiring the first laser signal and the second laser signal;

[0062] Step S210: Obtaining a Brillouin backscattering signal from the first laser signal;

[0063]Step S220: Obtain a phase-modulated multi-frequency signal from the second laser signal;

[0064] Step S230: Acquiring multi-frequency signals amplified by stimulated Brillouin scattering;

[0065] Step S240: attenuating the amplified multi-frequency signal to obtain the attenuated multi-frequency signal;

[0066] Step S250: converting the attenuated multi-frequency signal into an electrical signal for filtering to form a...

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Abstract

The invention provides a photoelectric oscillator on the basis of stimulated Brillouin scattering amplification effects and a method for regulating the photoelectric oscillator, and relates to the field of photoelectric technologies. The photoelectric oscillator comprises a first laser device, a circulator, an optical fiber unit, a second laser device, a phase modulator, a tunable attenuator, a photoelectric detector unit, a tunable filter, a coupler and a power amplifier. Multi-frequency signals can be generated by laser light outputted by the second laser device via the phase modulator, back Brillouin scattering signals are generated by laser signals outputted by the first laser device in the optical fiber unit, the multi-frequency signals and the back Brillouin scattering signals are subjected to stimulated Brillouin scattering amplification, amplified multi-frequency signals are subjected to attenuation, photoelectric conversion and filtering and then are divided into two channels of signals by the coupler, one channel of signals is used as feedback signals to be inputted into the phase modulator, and the other channel of signals is used as microwave signals to be outputted. The photoelectric oscillator and the method have the advantages that output wavelengths of the first laser device can be changed, accordingly, frequencies of the feedback signals can be changed, the required multi-frequency signals can be obtained, and the tunable microwave signals can be ultimately outputted.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a photoelectric oscillator based on the stimulated Brillouin scattering amplification effect and an adjustment method. Background technique [0002] At present, tunable microwave signal sources are necessary and important signal sources for satellite communication systems, radar systems and sensing systems. With the rapid development of information technology and the rapid increase of data transmission services, the bandwidth requirements for signal sources increase accordingly. Compared with traditional microwave signal sources, optoelectronic oscillators have greater advantages in high-frequency signal generation, and the signals have lower phase noise, so researchers have paid great attention to them. [0003] Some researchers use the stimulated Brillouin scattering effect in the optical fiber to phase-shift the carrier of the single-sideband modulated optical signal ...

Claims

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Application Information

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IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 吴帆
Owner YANCHENG INST OF TECH
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