A polymer triple-mode multiplexer based on cascaded tapered couplers

A three-mode, multiplexer technology, applied in the coupling of optical waveguides, instruments, optical waveguides and light guides, etc., can solve the problems of complexity and difficulty, and achieve the effects of low additional loss, controllability, and large bandwidth

Active Publication Date: 2022-05-31
GUILIN UNIV OF ELECTRONIC TECH
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  • Application Information

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Problems solved by technology

Recently, several polymer mode multiplexers that can be applied to board-level optical interconnection have been proposed to realize the mode conversion and multiplexing of the fundamental mode and the second-order mode, but they are based on precise dimension design, including waveguide size and waveguide Relative position, so there is a certain complexity and difficulty in device preparation

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  • A polymer triple-mode multiplexer based on cascaded tapered couplers
  • A polymer triple-mode multiplexer based on cascaded tapered couplers
  • A polymer triple-mode multiplexer based on cascaded tapered couplers

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Embodiment Construction

mode propagation constant of the fundamental mode in straight waveguides of equal degree, β

3b

is the width equal to the width of the large end of the second few-mode tapered waveguide 14

The mode propagation constant of the fundamental mode in the straight waveguide of .

[0019] In this embodiment, the distance between the first single-mode tapered waveguide 11 and the first few-mode tapered waveguide 13 is 2.5 μm.

The distance between the two single-mode tapered waveguides 12 and the second few-mode tapered waveguide 14 is 2.5 μm, and the first single-mode tapered waveguide 11 has a large end

The width of the end is 9 μm, the width of the small end of the first single-mode tapered waveguide 11 is 8 μm, and the width of the small end of the first few-mode tapered waveguide 13 is

10.5 μm, the width of the big end of the first few-mode tapered waveguide 13 is 11.5 μm, and the width of the big end of the second single-mode tapered waveguide 12 is 4.6

μm, the w...

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Abstract

The present invention proposes a polymer three-mode multiplexer based on cascaded tapered couplers, which includes input straight waveguides, few-mode tapered waveguides, single-mode tapered waveguides, S-shaped curved waveguides and output straight waveguides, S-shaped The curved waveguide is used to approach and separate the waveguides. When the fundamental mode is input from the three input straight waveguides and passes through the single-mode tapered waveguide along the S-shaped curved waveguide, the modes evolve through the few-mode tapered waveguide and the single-mode tapered waveguide, respectively. The second-order mode, the fundamental mode and the third-order mode are transmitted in the few-mode tapered waveguide to realize the multiplexing of the three modes. The multiplexer has the advantages of high mode conversion efficiency, low extra loss and large bandwidth, and is expected to be applied to the mode division multiplexing system in board-level optical interconnection.

Description

A polymer three-mode multiplexer based on cascaded tapered couplers technical field The present invention relates to a kind of mode multiplexer, particularly a kind of polymer three-mode based on cascaded tapered couplers multiplexer. Background technique With the increasing demand for large-capacity data transmission of on-board electronic systems, large-capacity, high-performance communication between modules Information transmission has become one of the key challenges. Modular division multiplexing (MDM) technology can effectively expand the data capacity of the transmission channel. A promising method for large-capacity information transmission at the board level. The mode multiplexer / demultiplexer is the key in the mode division multiplexing system components. Currently, mode (de)multiplexers based on different structures have been proposed, including asymmetric Y-branch, multimode interference (MMI), Directional coupling (DC), multimode gratings and adiab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/122G02B6/125G02B6/14G02B6/28
CPCG02B6/122G02B6/1228G02B6/125G02B6/14G02B6/2804
Inventor 尚玉玲郭文杰何翔
Owner GUILIN UNIV OF ELECTRONIC TECH
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