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90-degree optical mixer based on hybrid plasmon waveguide structure

A technology of plasmons and optical mixers, applied in optics, optical components, light guides, etc., can solve problems such as difficult chip integration, and achieve the effect of reducing transmission loss and distance

Active Publication Date: 2018-07-31
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

At present, the main choice for integrated optical mixers is the multimode interference coupler (MMI). The structure of traditional optical mixers usually consists of a 4×4MMI or four 2×2MMIs, but traditional MMIs are Based on the dielectric optical waveguide, the device size is on the order of hundreds of microns, and it is not easy to further improve the integration of the chip

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  • 90-degree optical mixer based on hybrid plasmon waveguide structure
  • 90-degree optical mixer based on hybrid plasmon waveguide structure
  • 90-degree optical mixer based on hybrid plasmon waveguide structure

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Embodiment Construction

[0024] The technical solution of the invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0026] In the optical mixer based on the hybrid plasmon waveguide structure, its input and output light is the fundamental mode of the hybrid plasmon optical waveguide transmitted in the interlayer of the waveguide slit medium. When the input light of the mixed plasmon fundamental mode en...

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Abstract

The invention discloses a 90-degree optical mixer based on a hybrid plasmon waveguide structure. The 90-degree optical mixer is composed of a single 4*4 multimode interference coupler (MMI). The hybrid plasmon waveguide structure consists of a dielectric waveguide layer, a slit dielectric interlayer on the dielectric waveguide layer, and a metal layer on the slit dielectric interlayer. When lightenters the hybrid plasmon waveguide, the special structure of the hybrid plasmon waveguide can excite a hybrid plasmon mode and confines the mode in the slit dielectric interlayer so that the propagation distance under the same optical path can be greatly reduced and thus the size of the device is greatly reduced. Thus, compared with a conventional dielectric waveguide mixer, the 90-degree opticalmixer is reduced in size from millimeters to micrometers, provides a new structural solution for highly integrated photonic devices and has far-reaching effects on the further integration of photonicdevices.

Description

technical field [0001] The invention relates to optical frequency mixing technology, in particular to a 90° optical mixer based on a hybrid plasmon waveguide structure. Background technique [0002] Coherent optical communication is an important modern communication method, and the coherent optical receiver is the most important device of the coherent optical communication system. In the coherent optical receiver, the received coherent optical signal is mixed with the optical signal generated by the local oscillator and then output to the photodiode for differential processing. Among them, the optical mixer is one of the most important components of the coherent optical receiver. At present, the main choice for integrated optical mixers is the multimode interference coupler (MMI). The structure of traditional optical mixers usually consists of a 4×4MMI or four 2×2MMIs, but traditional MMIs are Based on the dielectric optical waveguide, the device size is on the order of hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122G02B6/293
Inventor 王瑾翟雨萌祁优张云超陆云清
Owner NANJING UNIV OF POSTS & TELECOMM
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