Vector radio frequency signal generation system based on polarization multiplexing intensity modulator

An intensity modulator and polarization multiplexing technology, applied in the field of vector radio frequency signal generation systems, can solve problems such as easy reflection of electrical signals, and achieve the effect of improving system performance

Active Publication Date: 2020-07-28
FUDAN UNIV
View PDF15 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of electrical multiplexing is used to synthesize and then modulate an intensity modulator to generate mu

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
  • Vector radio frequency signal generation system based on polarization multiplexing intensity modulator
  • Vector radio frequency signal generation system based on polarization multiplexing intensity modulator
  • Vector radio frequency signal generation system based on polarization multiplexing intensity modulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention will be further described.

[0028] like figure 1 As shown, the vector radio frequency signal generation system based on the polarization multiplexing intensity modulator, the components and functions are described as follows:

[0029] Laser 1 is used to generate a continuous wave optical carrier with a specified frequency for optical fiber communication. The first radio frequency signal source 21 generates a radio frequency signal with a frequency f1. The second radio frequency signal source 22 generates a radio frequency signal with a frequency f2. The polarization beam splitter 3 (PBS) performs polarization diversity on the optical signal to obtain optical signals in the X polarization direction and the Y polarization direction. Polarizing Beam Coupler 4 (PBC), couples two beams of orthogonally polarized light into one fiber. The polarization multiplexed intensity modulator 5 includes two sub-i...

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 belongs to the technical field of radio over fiber communication, and particularly relates to a vector radio frequency signal generation system based on a polarization multiplexing intensity modulator. The system comprises a laser, a polarization beam splitter, a first radio frequency signal source, a second radio frequency signal source, a polarization multiplexing intensity modulator, a polarization beam coupler, an optical amplifier, an optical filter and a photoelectric detector which are connected in sequence, according to the invention, a polarization multiplexing intensitymodulator is combined with devices such as an optical filter and a photoelectric detector to generate a vector radio frequency signal; a photon synthesis method is adopted, and polarization multiplexing is utilized to overcome crosstalk of optical signals with different frequencies; one modulator bears RF signals with different frequencies and converts the RF signals into optical signals, the optical signals are transmitted through the optical fibers, the polarization directions of the two radio-frequency signals are orthogonal, and the PD has no interference, so that the system performance of optical fiber wireless converged communication is effectively improved, and huge advantages are brought into play in an access network which takes an ROF system as a main part in the future.

Description

technical field [0001] The invention belongs to the technical field of wireless communication over light, and in particular relates to a vector radio frequency signal generation system based on a polarization multiplexing intensity modulator. Background technique [0002] Radio-over-Fiber (ROF) technology has attracted much attention due to its high effective bandwidth, good mobility, and low transmission loss, and is expected to emerge in the future access network. At the same time, the vector modulation format can transmit more information in a limited bandwidth due to its high spectral efficiency, which can reduce the bandwidth requirements of optoelectronic devices and improve the sensitivity of the receiver, so it has also been widely studied. The combination of vector modulation and optical wireless communication can greatly increase the system transmission capacity while maintaining its excellent performance, and it is bound to become a key technology in the future. ...

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
IPC IPC(8): H04B10/50H04B10/54H04B10/2575
CPCH04B10/505H04B10/541H04B10/25752
Inventor 余建军李韦萍
Owner FUDAN UNIV
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