2*2 optical waveguide switch based on phase change material and preparation method thereof

A phase-change material and optical waveguide technology, applied in the field of optoelectronics, can solve the problems of large volume, large insertion loss, limit switch application, etc.
CN114326164APending Publication Date: 2022-04-12SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SUZHOU UNIV
Publication Date
2022-04-12

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Abstract

The invention discloses a phase change material-based 2 * 2 optical waveguide switch and a preparation method thereof. A 2 * 2 optical switch unit waveguide structure is arranged on a substrate, two waveguides are distributed in an axial symmetry mode and comprise two input ports and two output ports, and a coupling area is arranged between the two waveguides; and a uniform hundred-nanoscale Ge2Sb2Se4Te1 thin film consistent with the components of the target material is prepared in a coupling region by adopting a pulse laser deposition method. The switch unit is controlled by the phase change material covering the waveguide in the coupling area, the phase state of the phase change material is switched to complete the functions of dual-channel selection input, dual-channel gating and mode switching for the transverse electric fundamental mode, and the function of same-side port input and same-side port output for the transverse magnetic fundamental mode is met. The invention has the characteristics of high extinction ratio, small size and high switching speed.
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Description

technical field

[0001] The invention belongs to the technical field of optoelectronics, and in particular relates to a 2×2 optical waveguide switch based on a phase change material and a preparation method thereof. Background technique

[0002] With the development of technologies such as virtual reality, augmented display, cloud computing, big data, and artificial intelligence, higher requirements are placed on communication capacity, and finding new multiplexing technologies has become a new research hotspot in the field of optical communication. The use of spatial dimension as a new resource for information bearing has brought new changes to network technology. The multiplexing of spatial dimension increases the physical dimension and information capacity of communication networks. It is a multiplexing technology that needs to be developed and utilized urgently. Spatial mode multiplexing, referred to as "mode division multiplexing", is a kind of spatial dimension multiple...

Claims

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