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

A straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering

A technology of band-stop filtering and resonant system, which is applied in the field of optics, can solve the problems affecting the filtering effect and achieve good filtering effect

Active Publication Date: 2018-03-30
HARBIN INST OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that conventional filters are susceptible to electromagnetic interference and affect the filtering effect due to the use of electrical components for filtering, and propose a straight waveguide-ring-feedback waveguide-straight waveguide resonance for band-stop filtering system

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
  • A straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0020] Specific implementation mode one: combine figure 1 Describe this embodiment, a straight waveguide-loop-feedback waveguide-straight waveguide resonant system for band-stop filtering described in this embodiment, it includes a first resonant structure 1 and a second resonant structure 2, the first resonant structure The output end of 1 is connected to the input end of the second resonant structure 2;

[0021] The first resonant structure 1 includes a first coupler C 1 , the second coupler C 2 , the third coupler C3 and the fourth coupler C 4 , the second resonant structure 2 includes a fifth coupler C 5 , the sixth coupler C 6 , the seventh coupler C 7 and the eighth coupler C 8 , the first coupler C 1 , the second coupler C 2 and the fourth coupler C 4 constitutes the ring resonator of the first resonant structure 1, the second coupler C 2 , the third coupler C 3 and the fourth coupler C 4 constitutes the feedback waveguide of the first resonant structure 1, ...

specific Embodiment approach 2

[0026] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation of a straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering described in Embodiment 1. All optical fibers are single SMF-28 models. mode fiber.

specific Embodiment approach 3

[0027] Specific implementation mode three: combination figure 1 Describe this embodiment. This embodiment is a further definition of the straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering described in the first embodiment. The ring resonance of the first resonant structure The cavity and the ring resonator of the second resonant structure are both horizontally symmetrical, and the second coupler C 2 and the fourth coupler C 4 respectively located at both ends of the horizontal axis of symmetry of the ring resonator of the first resonant structure 1, the sixth coupler C 6 and the eighth coupler C 8 They are respectively located at both ends of the horizontal symmetry axis of the ring resonant cavity of the second resonant structure 2 .

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 straight waveguide-annular waveguide-feedback waveguide-straight waveguide resonator system for a band-elimination filter and belongs to the field of optics. The resonator system aims to solve the problems in the prior art that that conventional electrical filter elements are susceptible to electromagnetic interference and the filtering effect of the conventional electrical filter elements are therefore influenced. The resonator system comprises a first resonant structure and a second resonant structure, wherein the two resonant structures are the same with each other and are in cascade connection. The first resonant structure comprises four single-mode optical fibre couplers arranged in a 2*2 array and connected with each other. Among the four single-mode optical fibre couplers, a first coupler (C1), a second coupler (C2) and a fourth coupler (C4) are successively connected to form an annular resonant cavity, while the second coupler (C2), the a third coupler (C3) and the fourth coupler (C4) are successively connected to form an annular feedback waveguide. The coupling coefficients of all the couplers are preset in such a manner that the ratio of the total length of optical fibers in the annular resonant cavity to the total length of optical fibers in the feedback waveguide is maintained at a certain value. In this way, the band-elimination filtering function is realized. Meanwhile, optical fibers are immune to electromagnetic interference and the filtering effect is good. The resonator system is primarily used for optical filtering.

Description

technical field [0001] The invention relates to a straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering, which belongs to the field of optics. Background technique [0002] Resonators are widely used in optical switches, optical filters, and optical delay lines. Fiber resonators have the advantages of small size, light weight, simple structure, low power consumption, and easy connection to computers. They are widely used in optical communications. And in the fields of biology, chemistry, and environmental monitoring, under the conditions of high voltage, strong electromagnetic interference, or in small and closed spaces, fiber optic resonators have extraordinary performance. [0003] A filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter the frequency point of a specific frequency in the power line or frequencies other than this frequency point to obtain a power signal o...

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 Patents(China)
IPC IPC(8): G02B6/293G01D5/26
CPCG01D5/268G02B6/2934
Inventor 掌蕴东于长秋李慧吴泳锋袁萍
Owner HARBIN INST 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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com