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Microwave signal generating device and method of photoelectric oscillator based on liquid-core optical fiber Brillouin scattering effect

A technology of Brillouin scattering and photoelectric oscillator, applied in solid-state lasers and other directions, can solve the problems of increasing the phase noise of microwave signals, limiting the tunability of microwave signals, and complex broadband tuning, so as to reduce phase noise and improve Brillouin scattering. Efficient, low cost effect

Active Publication Date: 2016-07-27
东台城东科技创业园管理有限公司
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Problems solved by technology

At present, they all use ordinary single-mode fiber as the energy storage element of the optoelectronic oscillator. Therefore, these systems must use longer optical fibers as the energy storage element of the optoelectronic oscillator, which will increase the phase noise of the microwave signal, and the system It is more complicated, which limits the tunability of microwave signals, and it is relatively complicated and difficult to achieve broadband tuning

Method used

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  • Microwave signal generating device and method of photoelectric oscillator based on liquid-core optical fiber Brillouin scattering effect
  • Microwave signal generating device and method of photoelectric oscillator based on liquid-core optical fiber Brillouin scattering effect
  • Microwave signal generating device and method of photoelectric oscillator based on liquid-core optical fiber Brillouin scattering effect

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Embodiment 1

[0020] A microwave signal generating device of a photoelectric oscillator based on the Brillouin scattering effect of a liquid-core optical fiber in this embodiment, such as figure 2As shown, the Brillouin scattering pump laser 204 is an Agilent narrow linewidth tunable laser (Agilentlightwavemeasurementsystem8164B), the output wavelength is set to 1550nm, and the power is 10dBm, and the laser light it sends enters the first port of the first circulator 205, Enter the liquid-core optical fiber 203 through the second port. The liquid-core optical fiber 203 is drawn from a quartz capillary prefabricated body. The purity of the quartz sand is about 99.98%. The outer diameter of the capillary is 110 μm, the inner diameter is 8 μm, and the length is 30 m. , the inside of the capillary is filled with carbon tetrachloride liquid through femtosecond micromachining technology, and its two ends are fused with ordinary single-mode optical fiber to form a highly nonlinear liquid-core opti...

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Abstract

The invention discloses a microwave signal generating device and method of a photoelectric oscillator based on a liquid-core optical fiber Brillouin scattering effect.The microwave signal generating device includes a Brillouin scattering pump laser, an isolator, a modulator, a liquid-core optical fiber, a signal laser, a first circulator, a third laser, a second ring, a polarization beam splitter, a first optical fiber, a second optical fiber, a first polarization controller, a second polarization controller, a polarization beam combiner, a photoelectric detector, a coupler and a power amplifier.The device and the method can not only produce high-frequency microwave signals and can also obtain tunable microwave signals wider in tuning range.

Description

technical field [0001] The invention relates to signal generation technologies in the fields of radar, signal processing, and communication systems, and in particular to a microwave signal generation device and method of a photoelectric oscillator based on liquid-core optical fiber Brillouin scattering effect. Background technique [0002] Broadband tunable optically-generated microwave signal sources have broad potential application prospects, such as radar systems, signal processing and communication systems, and have attracted great attention from researchers. The photoelectric oscillator is considered to be an effective method for generating high-quality microwave signals. This method mainly uses the principle of a composite resonant cavity that combines optical and electrical signals to generate microwave signals with low phase noise, which can effectively reduce phase noise and obtain high-quality microwave signals. microwave signal. In order to obtain lower phase noi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 王如刚吴帆周锋孔维宾周六英
Owner 东台城东科技创业园管理有限公司
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