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

Waveguide coupler chip for semiconductor laser

A technology of lasers and couplers, applied in the coupling of optical waveguides, etc., can solve the problems of low matching degree of doped waveguides 5, limited coupling efficiency, complicated production, etc., and achieve the effects of flexible design, high-efficiency coupling, and easy assembly

Inactive Publication Date: 2010-12-08
ZHEJIANG UNIV
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the one hand K + / Ag + Twice-doped planar optical waveguide chip 7 is complicated to manufacture, and on the other hand, the X-direction divergence angle of end-emitting semiconductor laser 1 is too large, and its output light field is different from that of Ag + The matching degree of doped waveguide 5 is not high, which limits the coupling efficiency

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
  • Waveguide coupler chip for semiconductor laser
  • Waveguide coupler chip for semiconductor laser
  • Waveguide coupler chip for semiconductor laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as Figure 4 As shown, the present invention realizes the coupling of the end surface emitting semiconductor laser 1 and the optical fiber 4 by doping the optical waveguide chip 8 once.

[0018] The size of the optical waveguide on the primary doped optical waveguide chip 8 in the Y direction matches the size of the optical fiber 4 . Along the Z direction, the optical waveguide on the primary doped optical waveguide chip 8 is composed of expansion section waveguides 9 and contraction section waveguides 10 connected in sequence. The width of the input end of the waveguide 9 in the expansion section (the size in the X direction) matches the size of the end surface emitting semiconductor laser 1; the slope of the contour line of the waveguide 9 in the expansion section is equal to the tangent of the divergence angle in the X direction after 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 discloses a waveguide coupler chip for a semiconductor laser. The coupler chip is a primarily doped optical waveguide chip; and along the Z direction, an optical waveguide on the primarily doped optical waveguide chip is formed by sequentially connecting an expansion section waveguide and a shrinkage section waveguide. By utilizing the waveguide characteristic of the optical waveguide with gradually changed sections, the divergence angle of the output beam and the mold field size are gradually changed to realize higher efficiency coupling. The waveguide coupler chip has the characteristics of simple structure, flexible design, easy assembly and the like.

Description

technical field [0001] The invention relates to an optical component, in particular to a waveguide coupler chip for a semiconductor laser. Background technique [0002] In the optical fiber communication system, the emission source is coupled with the optical fiber, and the two are coaxially packaged to form the electro-optic conversion device with the largest consumption. The coupling efficiency is an important performance index of the electro-optic conversion device. Semiconductor lasers are commonly used emission sources. Due to the divergence angle of the laser output by the end-emitting semiconductor lasers in the vertical direction (usually about 30-40°, that is, figure 1 The divergence angle between the X direction shown) and the horizontal direction (usually about 6-10°, that is figure 1 The Y direction shown) is very different, and the mode field mismatch with the fiber is serious, so the direct coupling efficiency is not high. The usual practice is to place a coll...

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): G02B6/42
Inventor 郝寅雷郑斌李宇波周强江晓清杨建义王明华
Owner ZHEJIANG UNIV
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