Unlock instant, AI-driven research and patent intelligence for your innovation.

A Wavelength Division Multiplexer with Flat Image Diffraction Envelope and Its Simulation Optimization Method

A technology of wavelength division multiplexer and image plane, which is applied in the direction of instruments, optical waveguide, optical, etc., can solve the problems of degradation of crosstalk characteristics of devices, limitation of spectral resolution ability of devices, difficulty in manufacturing devices with smaller channel intervals, etc., to achieve diffraction The effect of flat envelope, improved diffraction efficiency, and reduced coupling loss

Active Publication Date: 2020-06-12
SHANGHAI SILIGHT TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only degrades the crosstalk characteristics of the device, but also limits the spectral resolution capability of the device, making it difficult to manufacture devices with smaller channel spacing and more channels

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 Wavelength Division Multiplexer with Flat Image Diffraction Envelope and Its Simulation Optimization Method
  • A Wavelength Division Multiplexer with Flat Image Diffraction Envelope and Its Simulation Optimization Method
  • A Wavelength Division Multiplexer with Flat Image Diffraction Envelope and Its Simulation Optimization Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] The wavelength division multiplexer of the present invention is simulated by the optical waveguide simulation software OptiBPM 9.0. During the simulation, the parameters of the parallel mode converter mainly include: the size of the Rowland circle, the starting width and the end width of the parallel mode converter. Specifically, the simulation is performed using a laser with a wavelength of 1550nm. Set the radius of the Rowland circle at the output end to 850um; set the array waveguide spacing (grating period) to 3.5um; set the ridge width at the beginning of the parallel mode converter at the output end to 2.6um, and set the terminal ridge width to the key dimension cd line width, The current process is 0.25um. The length of the output parallel mode converter in the model can vary.

[0048] refer to Figure 4 , Figure 4 The simulation model without the parallel mode converter is schematically shown, where the input waveguide is a 1.5um low-level ridge waveguide w...

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 wavelength division multiplexer with image surface diffraction envelope flatness and of a Rowland structure and a simulating optimization method thereof. In the light propagation direction, the wavelength division multiplexer comprises an input waveguide, an input-end slab area, an array waveguide area, an output-end slab area and an output waveguide. The input-end slabarea comprises an input-end parallel-mode converter, and the output-end slab area comprises an output-end parallel-mode converter. From an input-end parallel-mode converter terminal to an input-end parallel-mode converter terminal, the waveguide ridge width of the input-end parallel-mode converter is gradually increased. From an output-end parallel-mode converter beginning terminal to an output-end parallel-mode converter terminal, the waveguide ridge width of the output-end parallel-mode converter is gradually reduced.

Description

technical field [0001] The invention relates to the technical field of optoelectronic integrated devices. Specifically, the invention relates to a wavelength division multiplexer with a flat image plane diffraction envelope and a simulation optimization method thereof. Background technique [0002] In the design of wavelength division multiplexers based on Array Waveguide Grating (AWG) technology, in order to solve the problem of loss uniformity among the channels of the device in the previous technical framework, it is necessary to increase the free spectral range of the device ( Free Spectral Range, hereinafter referred to as FSR) implementation. To increase the device FSR, it is necessary to reduce the diffraction order of the device. For example, Georges Przyrembel et al. (Design and fabrication of arrayedwaveguide grating multiplexers on silicon-on-insulator platforms, Optical Engineering 46(9), 094062) in figure 2 It is disclosed in that when the diffraction order m...

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): G02B6/12
CPCG02B6/12016
Inventor 李冰孟超辛田
Owner SHANGHAI SILIGHT TECH