Tunable all-optical microwave photon frequency conversion device without external electric local oscillator

A technology of microwave photonics and frequency conversion devices, applied in optics, nonlinear optics, instruments, etc., can solve problems affecting normal signal reception and noise performance deterioration

Active Publication Date: 2014-12-17
XIAN INSTITUE OF SPACE RADIO TECH
View PDF4 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electro-optic modulator is directly modulated by the high-frequency electric local oscillator, and the nonlinear effect of the waveguide will cause the noise performance to deteriorate
When using a low-frequency electric local oscillator, the entire frequency conversion process needs to use the high-order harmonics of the local oscillator, and the processing process introduces additional clutter interference, which affects the normal reception of the signal

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
  • Tunable all-optical microwave photon frequency conversion device without external electric local oscillator
  • Tunable all-optical microwave photon frequency conversion device without external electric local oscillator
  • Tunable all-optical microwave photon frequency conversion device without external electric local oscillator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] like figure 1 As shown, the all-optical microwave photon frequency conversion device without external electric local oscillator tunable of the present invention includes: narrow linewidth semiconductor laser, nonlinear optical loop, photodetector and low-pass filter, wherein the nonlinear optical loop includes: splitting device, first polarization controller, second polarization controller, optical circulator, dual-drive lithium niobate modulator, optical isolator, single-mode polarization-maintaining fiber, electrical attenuator, electrical power divider, electrical phase shifter, and DC voltage source.

[0039] The optical circulator includes a first port, a second port and a third port, the single-mode polarization-maintaining fiber includes port a and port b, and the dual-drive lithium niobate modulator includes a first radio frequency port, a second radio frequency port and a direct current port.

[0040] The narrow-linewidth semiconductor laser is connected to th...

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 tunable all-optical microwave photon frequency conversion device without an external electric local oscillator. The tunable all-optical microwave photon frequency conversion device mainly comprises a narrow line width semiconductor laser unit, a non-linear optical loop circuit, a photoelectric detector and a low-pass filter; a saturated stimulated brillouin scattering effect is stimulated under the condition of not providing the external electric local oscillator and a circuit is selected to transmit by the non-linear optical loop circuit to generate anti-Stokes light for carrying out frequency conversion on a radio-frequency signal. Noise waves and noise inferences, caused by an optical local oscillator in traditional microwave photon frequency conversion are reduced. Meanwhile, the radio-frequency signal is subjected to high-order modulation by using a double-drive lithium niobate modulator, so that the tunable all-optical microwave photon frequency conversion is realized.

Description

technical field [0001] The invention relates to an all-optical microwave photon frequency conversion device, in particular to a tunable all-optical microwave photon frequency conversion device without an external electric local oscillator, and belongs to the technical field of satellite laser communication and microwave photon processing and forwarding. Background technique [0002] The space-borne broadband microwave photon processing and forwarding system makes full use of the characteristics of microwave photonic technology, such as large bandwidth, integration, strong parallel processing capability, and strong anti-electromagnetic interference ability, to modulate broadband microwave signals into the optical domain, and realize wide bandwidth, multi- Microwave photon processing and forwarding of microwave signals in frequency bands and multi-signal formats. This technology provides an effective solution to solve the problems of small communication capacity, limited numbe...

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): G02F1/35G02F1/355
Inventor 梁栋谭庆贵蒋炜李小军朱忠博窦金芳
Owner XIAN INSTITUE OF SPACE RADIO TECH
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