Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Light and small photoelectric oscillator based on electromagnetic induced transparency principle and low phase noise microwave signal generation method

A technology of electromagnetically induced transparency and photoelectric oscillators, applied in solid-state lasers and other directions, to achieve the effects of light weight, simple adjustment method, and small volume

Active Publication Date: 2019-12-03
HEFEI UNIV OF TECH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional optoelectronic oscillators require narrow-band electrical filters, double-coupled tapered fibers, or double-coupled prisms and other bulky structures as narrow-band filter elements, and the practical application environment of small and low-noise optoelectronic oscillations puts forward special requirements for optoelectronic oscillations of WGM microcavities. : 1) The bandwidth and transmittance of the resonance spectrum of the WGM microcavity can be stably and finely tuned to regulate the spectral purity and phase noise performance of the oscillation system; 2) The narrow-band filtering is no longer based on the bulky long optical fiber or Add-drop structure, Facilitate its miniaturization and integration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Light and small photoelectric oscillator based on electromagnetic induced transparency principle and low phase noise microwave signal generation method
  • Light and small photoelectric oscillator based on electromagnetic induced transparency principle and low phase noise microwave signal generation method
  • Light and small photoelectric oscillator based on electromagnetic induced transparency principle and low phase noise microwave signal generation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] figure 1It is a structural schematic diagram of the photoelectric oscillator based on the multilayer film optical microcavity proposed by the present invention. The optoelectronic oscillator consists of a laser 1, a polarization controller 2, a Mach-Zehnder intensity modulator 3, an RF amplifier 4, a high-speed photodetector 5, a SNAP microcavity 6 and a laser frequency locking module 8 to form a closed optoelectronic feedback loop. The road is the main structure of the photoelectric oscillator; wherein, the laser 1 is connected to the input end of the Mach-Zehnder intensity modulator 3 after passing through the polarization controller 2, and is used to generate a comb spectrum, and the polarization controller controls the polarization state of the input light, and the Mach-Zehnder intensity modulator 3 The Zender intensity m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a light and small photoelectric oscillator based on the electromagnetic induced transparency principle and a low phase noise microwave signal generation method. A closed photoelectric feedback loop is formed by an optical micro-cavity electromagnetic induced transparency (EIT) generation module, a laser, a polarization controller, a Mach Zehnder intensity modulator, an RF amplifier, a high-speed photodetector and a laser frequency locking module. The optical micro-cavity EIT generation module is used as a high Q value energy storage device and a narrow-band filter device. The laser generates continuous tunable laser. The polarization controller controls the polarization state of the input light. The Mach Zehnder intensity modulator performs intensity modulation on the light from the laser to generate a sideband. The RF amplifier is used for amplifying the microwave signal in the loop. The high-speed photodetector is used for converting optical signals into electrical signals. The laser frequency locking module is used for locking the pump light at the micro-cavity resonant frequency. The phase noise of the signal can be effectively reduced without the need for a traditional electric filter or an Add-drop micro-cavity coupling structure, and miniaturization is easy.

Description

technical field [0001] The invention belongs to the technical field of microwave and optoelectronics, and in particular relates to a light and small photoelectric oscillator based on the principle of electromagnetically induced transparency and a method for generating microwave signals with high spectral purity. Background technique [0002] As the most basic and core components in modern electronic systems, small-scale high-spectrum-purity microwave oscillation signal sources are widely used in many fields such as radar, wireless communication, radio astronomy, satellite, GPS navigation, and instrument measurement. With the development of radar, satellite communication, electronic countermeasures, etc. to higher frequency bands, the electronic system has higher and higher requirements for the frequency coverage, phase noise performance and integration of the oscillator. For example, for military digital array radar systems, the phase noise of the oscillation source has grad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 金雪莹于连栋徐昕赵会宁夏致媛夏豪杰李维诗
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products