Integrated optical filter with center wavelength and filter bandwidth both adjustable independently

An optical filter, center wavelength technology, applied in the direction of light guide, optics, instruments, etc., can solve the problems of large size of optical filter, difficult adjustment and control, poor stability, etc., to achieve small size, convenient adjustment and control, and stability. high effect

Inactive Publication Date: 2015-01-28
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF5 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide an integrated optical filter with independently adjustable central wavelength and filter bandwidth, which can be used to solve the problems of existing optical filters such as large volume, high cost, poor stability, and difficult adjustment and control.

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
  • Integrated optical filter with center wavelength and filter bandwidth both adjustable independently
  • Integrated optical filter with center wavelength and filter bandwidth both adjustable independently
  • Integrated optical filter with center wavelength and filter bandwidth both adjustable independently

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] 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.

[0023] see figure 1 As shown, the present invention provides an integrated optical filter with independently adjustable center wavelength and filter bandwidth, including:

[0024] The input optical waveguide 101, the broadband optical signal to be processed is input into the integrated optical filter from its input end. The broadband optical signal contains a variety of spectral components, and a section of the spectrum with a passband size of Δλ and a central wavelength of λ is the optical signal to be filtered out by the integrated optical filter proposed by the present invention. The other end of the input optical waveguide 101 is a waveguide that is curved (deflected to the right by 90 degrees) and whose end width gr...

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 integrated optical filter with center wavelength and filter bandwidth both adjustable independently. The optical filter is composed of tunable micro-ring resonators as basic units and comprises an input optical waveguide, a first-level high-order optical filter, an intermediate optical waveguide, a second-level high-order optical filter and an output optical waveguide. The first-level high-order optical filter is used for primary filtering of light guided by the input waveguide; the second-level high-order optical filter is used for secondary filtering of light after the primary filtering. The construction method of the integrated optical filter is that multiple tunable micro-ring resonators are connected in series to form the high-order optical filters with flat-top filter curves; two levels of the high-order optical filters with center wavelength adjustable independently are cascaded to form the integrated optical filter with the center wavelength and filter bandwidth both adjustable independently.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an integrated optical filter with independently adjustable central wavelength and filtering bandwidth. Background technique [0002] Wavelength-Division Multiplexing (WDM, Wavelength-Division Multiplexing) optical fiber communication system has become the basic platform of modern high-speed broadband communication network. As the core equipment of the optical fiber communication system, the use of Reconfigurable Optical Add-Drop Multiplexer (ROADM, Reconfigurable Optical Add-Drop Multiplexer) brings more convenience for business development and lower operation cost to network operation. ROADM adds, drops and multiplexes signals in units of wavelengths in the optical domain. Because of its transparency, flexibility and scalability, it is increasingly favored by network operators. [0003] An ideal reconfigurable optical network is capable of adding or dropping...

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): G02F1/01G02F1/03
CPCG02B6/29338G02B6/12007G02B6/2934G02B6/29353G02B6/29395G02F1/035
Inventor 张磊杨林
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