A Realization Method of High Download Rate Photonic Crystal Demultiplexer Using Injection Technology and Reflective Microcavity

A technology of photonic crystals and demultiplexers, applied in the field of optical communications, can solve problems such as the inability to apply optical integrated circuits, signal interference, and impact on the scalability of demultiplexers.

Inactive Publication Date: 2011-12-07
BEIJING UNIV OF POSTS & TELECOMM
View PDF3 Cites 12 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 two important problems in the manufacturing process of the wave demultiplexer: one is that the download efficiency of the demultiplexer is not high, and traditional solutions such as blocking the output port of the main waveguide will caus

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 Realization Method of High Download Rate Photonic Crystal Demultiplexer Using Injection Technology and Reflective Microcavity
  • A Realization Method of High Download Rate Photonic Crystal Demultiplexer Using Injection Technology and Reflective Microcavity
  • A Realization Method of High Download Rate Photonic Crystal Demultiplexer Using Injection Technology and Reflective Microcavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The structure of photonic crystal demultiplexer with reflective microcavity using injection technique is as follows figure 1 As shown, it contains a W1 photonic crystal waveguide and three pairs of downloading microcavities and coupling microcavities. The download resonant cavity is the second row of the W1 waveguide. One air hole is removed, and it is composed of six air holes adjacent to the air hole. The radius of the air hole near the W1 waveguide and the lower waveguide is 0.23a, and the radius of the remaining air holes is still 0.4 a. Lattice constant a=445nm, ordinary air hole radius r=182nm, refractive index n of dielectric silicon si = 3.48. Because the different refractive index of the air hole will affect the change of the resonance frequency, the basic structure of the photonic crystal multi-channel demultiplexer can be formed by rationally designing the refractive index of the injected microfluid.

[0037] First, the distance between coupling cavities 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 relates to a method for realizing a high-download rate photonic crystal demultiplexer with a reflection micro-cavity employing an implantation technology. In the method, a device structure for introducing the reflection micro-cavity and a microfluid implantation technology into a two-dimensional photonic crystal demultiplexer is designed, and a higher download rate is acquired by increasing the reflection micro-cavity at a specific position on the rear side of a download micro-cavity along a main waveguide direction; and microfluid with different refractive indexes is implanted into an air hole of a resonant cavity at different positions of the demultiplexer, so that a guide die of a photonic crystal is changed, a transmission peak shifts, and multi-channel wavelength demultiplexing is realized. The photonic crystal having a medium background air hole structure in a triangular lattice is utilized, and the method is closer to a silicon-on-insulator (SOI)-based photonic crystal manufacturing technology which is widely applied at present, and is high in realizability. The three channels have the transmissivity of over 95 percent, and good application of the method in photon integration and wavelength division multiplexing (WDM) can be acquired.

Description

technical field [0001] The invention relates to a method for realizing a high download rate photonic crystal demultiplexer using injection technology and having a reflective microcavity, and belongs to the technical field of optical communication. Background technique [0002] With the large-scale application of wavelength division multiplexing (WDM) technology in communication systems, many demultiplexers with different structures have been proposed and widely studied. So far, demultiplexers mainly include semiconductor demultiplexers (Document 1, Koichi Takiguchi, Tsutomu Kitoh, Manabu Oguma, Atsushi Mori, and Hiroshi Takahashi, "Integrated-optic demultiplexers for optical OFDM signals," Optical Fiber Communication Conference (OFC) 2011, and Document 2, Jianjun Chen, Zhi Li, Jia Li, and Qihuang Gong, "Compact and high-resolution plasmonic wavelength demultiplexers based on Fano interference," Optics Express, Vol.19 Issue 10, pp.9976- 9985(2011)), metal grating demultiplex...

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): G02B6/293G02B6/122
Inventor 田慧平申冠生纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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