Up-conversion device capable of achieving full-gloss microwave based on cross polarization modulation

A cross-polarization modulation and frequency conversion device technology, applied in the field of microwave photonics, can solve the problems of slow up-conversion response speed and limited up-conversion operating frequency, etc., and achieve the effects of low cost, practicality and stable structure

Active Publication Date: 2014-07-23
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the up-conversion technologies use electro-optical modulators, which inevitably require electro-optic conversion, so the response speed of up-conversion is slow, and the bandwidth of the modulator seriously limits the operating frequency of up-conversion.

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
  • Up-conversion device capable of achieving full-gloss microwave based on cross polarization modulation
  • Up-conversion device capable of achieving full-gloss microwave based on cross polarization modulation
  • Up-conversion device capable of achieving full-gloss microwave based on cross polarization modulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0036] figure 1 A schematic structural diagram of an all-optical microwave up-conversion device based on cross-polarization modulation proposed by the present invention is shown, and the device includes:

[0037] A narrow linewidth laser 1 for generating continuous probe light;

[0038] A polarization modulator 2, which uses the microwave signal output by the microwave signal source 3 to modulate the polarization state of the detection optical signal, and outputs an optical carrier detection optical signal and a modulated sideband detection optical signal, and the optical carrier detection optical signal The polarization state of the modulated sideband detection optical signal is perpendicular to each other, and the modu...

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 discloses an up-conversion device capable of achieving full-gloss microwave based on cross polarization modulation. The up-conversion device comprises a narrow line width laser, a first polarization modulator, a microwave signal source, a first polarization controller, a first optical filter, a circulator, a polarization beam splitter, a third polarization controller, a fourth polarization controller, an optical coupler, a high nonlinear optical fiber, a tunable laser, a waveform generator, a strength modulator, a second polarization controller, a polarizer, a second optical fiber, a single mode optical fiber, a photoelectric detector, an electric amplifier, an electric frequency mixer and a low pass filter. The up-conversion device can solve the problems of base band digital signal up-conversion in a radio over fiber system, the change, caused by dispersion, of microwave power along with microwave frequency and periodic damping, caused by the change of propagation length, of microwave power.

Description

technical field [0001] The invention belongs to the field of microwave photonics, and more specifically relates to an all-optical microwave up-conversion device based on cross-polarization modulation. Background technique [0002] In order to meet the needs of users for mobile data services and multimedia big data services, radio frequency over optical technology has emerged as the times require. Radio frequency over fiber technology combines the flexible advantages of wireless communication technology and the broadband and low-loss advantages of optical fiber communication technology. It uses analog optical fiber links instead of metal wires or the atmosphere to transmit high-frequency signals, thereby greatly expanding the coverage of base stations and reducing The cost of wireless communication network construction. The use of analog optical fiber links to transmit radio frequency signals solves the transmission and cost problems of high frequency signals, and also has s...

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): H04B10/516H04B10/2575
Inventor 李伟王文亭孙文惠刘建国祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap