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Frequency multiplication photoelectric oscillator

A photoelectric oscillator and frequency doubling technology, applied in solid-state lasers and other directions, can solve the problems of increasing cost and complexity, and difficult to control fiber grating dispersion, and achieve the effect of easy control of the operating point, low cost, and stable operation.

Inactive Publication Date: 2013-07-24
SOUTHEAST UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Since the dispersion of fiber gratings is not easy to control, it must be adjusted with a tunable laser to adjust the dispersion, but it increases the cost and complexity

Method used

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  • Frequency multiplication photoelectric oscillator
  • Frequency multiplication photoelectric oscillator
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Embodiment Construction

[0021] The present invention will be further explained below in conjunction with the accompanying drawings.

[0022] like figure 1 As shown, a frequency doubling photoelectric oscillator includes a light source 100, a fundamental wave and frequency doubling dual-output optical modulator module 110, a first photodetector 121, and a photoelectric loop 130; wherein, the fundamental wave and frequency doubling dual output light The input end of the modulator module 110 is connected to the light source 110, and the input end of the first photodetector 121 is connected to the first output end of the fundamental wave and frequency multiplication dual output optical modulator module 110 to output a frequency multiplied microwave signal, and the photoelectric loop The input end of 130 is connected with the second output end of the fundamental wave and frequency multiplication dual output optical modulator module 110 to form a photoelectric oscillation circuit working at the resonant fr...

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Abstract

The invention discloses a frequency multiplication photoelectric oscillator, comprising a light source, a fundamental wave and frequency multiplication double-output light modulator module, an optical detector and a photoelectric loop circuit. The fundamental wave and frequency multiplication double-output light modulator module consists of a mach-zehnder modulator, an optical phase shifter and three optical couplers. The modulation characteristics of the mach-zehnder modulator working at the maximum transmission point and the minimum transmission point are adopted to realize the output of frequency multiplication oscillation signals of the photoelectric oscillator. In order to generate a feedback fundamental frequency microwave signal for maintaining the operation of the photoelectric oscillator, the output light of the mach-zehnder modulator and the other path of light carrier wave after phase shifting are coupled into one path, so as to generate the fundamental frequency microwave signal through coherence interference. The fundamental wave and frequency multiplication double-output light modulator module is integrated on one lithium niobate chip. The frequency multiplication photoelectric oscillator is easy for controlling a working point, can work stably and easily in a temperature change and vibration environment and is lower in cost.

Description

technical field [0001] The invention relates to a frequency doubling photoelectric oscillator, which belongs to the fields of photon technology and microwave technology. Background technique [0002] Most traditional high-performance microwave signal sources use electrical energy storage elements such as dielectric cavity oscillators or acoustic energy storage elements such as quartz crystal oscillators to form resonant cavities. When the operating frequency of the dielectric cavity and crystal resonator exceeds gigahertz, its quality factor (Quality factor, Q) drops rapidly, and the generated microwave signal has poor phase noise. [0003] In the 1990s, X·S·Yao et al first proposed to use an Optoelectronic Oscillator (OEO) to generate high-performance microwave signals, see Chinese Patent No. 00803073 granted to X·S·Yao et al. An optoelectronic oscillator is a microwave oscillator based on energy storage in an optical resonant cavity. A typical optoelectronic oscillator i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
Inventor 杨春崇毓华
Owner SOUTHEAST UNIV
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