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A multi-mode interference type optical switch controlled by input position and its preparation method

A multi-mode interference and input position technology, applied in the coupling of optical waveguides, can solve the problems of high cost, complex structure, and difficult manufacturing process, and achieve the effects of low nonlinearity, simple structure and modulation method, and simple structure

Active Publication Date: 2015-12-30
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing adjustable PLC-type optical switch mainly uses the principles of electro-optic effect, thermo-optic effect, magneto-optic effect, acousto-optic effect and other principles of the material, and needs to add a refractive index modulation module to change the refractive index of the multimode waveguide to realize the switch state adjustable. The production process is difficult, the structure is complex, and the cost is high

Method used

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  • A multi-mode interference type optical switch controlled by input position and its preparation method
  • A multi-mode interference type optical switch controlled by input position and its preparation method
  • A multi-mode interference type optical switch controlled by input position and its preparation method

Examples

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Embodiment

[0046] Example: 1×4 multimode interference optical switch.

[0047] like figure 1 As shown, an input position-controlled multimode interference optical switch of the present invention includes a planar lightwave optical circuit chip 1 , a light source 2 , an input optical fiber array 3 and an electric automatic core adjustment device 4 . The planar lightwave optical circuit chip 1 includes a silicon substrate 101 , a silicon dioxide buffer layer 102 grown on the silicon substrate 101 , a waveguide 103 grown on the silicon dioxide buffer layer 102 , and a cover layer 104 grown on the waveguide 103 . The waveguide 103 includes an input-stage single-mode waveguide 1031 , an intermediate-stage multi-mode waveguide 1032 , and four output-stage single-mode waveguides 1033 . The light source 2 is connected to the input end of the input fiber array 3, the output end of the input fiber array 3 is connected to the input end of the input-stage single-mode waveguide 1031, and the output...

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Abstract

The invention discloses an input position controlled multi-mode interference optical switch, which comprises a planar light wave optical circuit chip, a light source, an input optical fiber array and an electric automatic core adjustment device. The planar light wave optical circuit chip includes a silicon substrate, a silicon dioxide buffer layer, The waveguide, and the covering layer, the waveguide includes an input-level single-mode waveguide, an intermediate-level multimode waveguide and n output-level single-mode waveguides; the light source is connected to the input end of the input fiber array, and the output end of the input fiber array is connected to the input-level single-mode waveguide The input end of the input-level single-mode waveguide is connected to the input end of n output-level single-mode waveguides through the intermediate-level multi-mode waveguide; the input fiber array is fixedly connected to the electric automatic core-aligning device. The switching state of the optical switch is adjustable, and the process and structure are simple, and the cost is low. The invention also discloses an adjustment method of the multi-mode interference optical switch controlled by the input position. The adjustment method is simple and can quickly realize the adjustment of the switch state.

Description

technical field [0001] The invention belongs to the technical field of integrated photonic devices, and in particular relates to an input position controlled multi-mode interference optical switch and a preparation method thereof. Background technique [0002] The optical switch is a key device that can convert the channel of the optical signal in the optical transmission process, and can be widely used in the realization of functions such as routing selection, wavelength selection and optical cross-connection of the all-optical layer. According to the classification of the working medium, optical switches can be divided into free space optical switches and planar waveguide type (hereinafter referred to as: PLC type) optical switches. [0003] The PLC optical switch is manufactured by semiconductor technology, and has the advantages of compact structure, batch production, and high stability. Among them, the PLC-type optical switch based on silicon dioxide on silicon (Englis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/35
Inventor 孙小菡戚健庭蒋卫锋
Owner SOUTHEAST UNIV
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