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2X3 light wave guide switch

An optical waveguide and switch technology, applied in the field of optical switch devices, can solve problems such as difficult to meet user requirements, and achieve the effect of ingenious design

Inactive Publication Date: 2005-12-14
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Their common feature is that they are limited to only two output terminals, which is difficult to meet the user's requirements

Method used

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  • 2X3 light wave guide switch
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Embodiment

[0023] The structure diagram of the present invention is shown in Fig. 1 (a), Fig. 1 (b), Fig. 2 (a), Fig. 2 (b), including two single-mode input waveguides A, B, and three single-mode output waveguides 1, 2, 3 and the multimode waveguide area 4, wherein the multimode waveguide area 4 is set between the input waveguides A, B and the output waveguides 1, 2, 3, and the entrance end of the multimode waveguide area 4 is connected to the input waveguides A, B The outlet ends of the multimode waveguide area 4 are connected to the output waveguides 1, 2, and 3 respectively.

[0024] The single-mode output waveguide 2 is composed of a tapered waveguide part 7 and a straight waveguide part 8, wherein one end of the tapered waveguide part 7 is connected to the exit end of the multimode waveguide area 4, and the other end is connected to the straight waveguide part 8.

[0025] The above-mentioned multimode waveguide region 4 is a multimode interference region, and two refractive index ch...

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Abstract

The present invention is one kind of light waveguide switch based on multimode interference principle and with 2x3 structural units. The 2x3 light waveguide switch has 2 monomode input waveguides, 3 monomode output waveguides, and 1 multimode waveguide area set between the input waveguides and the output waveguides and with input connected to the input waveguides and output connected to the output waveguides. The multimode waveguide area is one multimode interference area provided with two refractive index variable regions. The present invention may output light signal from any input port through the three output ports, couple light signals from any two input ports through the middle output port, or couple light signals from any two input ports through the two side output ports. In addition, the 2x3 light waveguide switch may be integrated in one single chip, and may be used widely in whole light communication, and fiber network and system.

Description

1. Technical field: [0001] The invention relates to an optical switch device capable of routing, cross-connecting or coupling optical signals of different wavelengths or the same wavelength in the field of optical communication. It belongs to the innovative technology of optical waveguide switch. 2. Background technology: [0002] The optical switch is one of the most important components in the all-optical communication network, especially in the fiber-to-the-home network. Optical switches can route and switch optical signals, and can transmit different optical signals to different end users according to the needs of different users. The current optical waveguide switches include Y-branch 1×2 optical switches, X-type 2×2 optical switches, 3×2 optical switches, and cascaded formation of Y-branch 1×2 structures or X-type 2×2 structures as basic units. M×N optical switch array. Their common feature is that they are all limited to two output terminals, which is difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122
Inventor 李宝军陈志文李章健
Owner SUN YAT SEN UNIV