Mode coupler with wavelength-division multiplexing function, and preparation method thereof

A mode coupling and wavelength division multiplexing technology, which is applied in the coupling of optical waveguides, instruments, light guides, etc., can solve the problems of complex side polishing technology, large additional loss of couplers, and unfavorable mass production, etc., to achieve low loss, The effect of small crosstalk between modes and high accuracy

Inactive Publication Date: 2018-12-18
SHANGHAI UNIV
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Problems solved by technology

[0003] The current manufacturing process mainly includes fusion taper and side polishing. The side polishing technology is complicated and not conducive to mass production, and the couplers produced have large additional losses, low coupling efficiency, low mode purity, and narrow working bandwidth. question

Method used

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  • Mode coupler with wavelength-division multiplexing function, and preparation method thereof
  • Mode coupler with wavelength-division multiplexing function, and preparation method thereof
  • Mode coupler with wavelength-division multiplexing function, and preparation method thereof

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings.

[0028] Such as figure 1 As shown, a mode coupler with wavelength division multiplexing function is made of several optical fibers through adiabatic taper and fused taper to realize simultaneous multiplexing of multiple wavelengths and multiple modes. In this embodiment, two optical fibers are selected, optical fiber I 202 and optical fiber II 203, wherein optical fiber I 202 is a single-mode optical fiber, and optical fiber II 203 is a few-mode optical fiber; wherein optical fiber I 202 transmits a specific mode of a wavelength, and after mode conversion in the coupling region , another specific mode corresponding to this wavelength can be coupled out in the optical fiber II 203, and finally multiplexed with the high-order mode of another wavelength input from the input end 102 in the optical fiber II 203 at the output end 104 of the opt...

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Abstract

The invention provides a mode coupler with a wavelength-division multiplexing function, and a preparation method thereof. The coupler is manufactured by a plurality of optical fibers through a thermalisolation biconical taper and a fused biconical taper so as to realize the simultaneous multiplexing of multiple wavelengths and multiple modes. The thermal isolation fused biconical taper is performed on the optical fiber, the phase matching is realized between the fine-drawn optical fiber cladding, and the wavelength multiplexing is realized by adjusting stretching distance. The mode coupler issimple in operation and high in accuracy. The simultaneous multiplexing of the wavelength and mode is small in loss, high in mode purity, small in inter-mode cross-talking, large in work bandwidth, and stable in performance, and has extensive application prospect in the field of the high-order mode production, the mode conversion, the mode-division multiplexing, the wavelength-division multiplexing, the few-mode optical fiber laser and like fields.

Description

technical field [0001] The invention belongs to the fields of optical fiber wavelength division multiplexing coupler, mode conversion and mode multiplexing, and in particular relates to a mode coupler with wavelength division multiplexing function and a preparation method thereof. Background technique [0002] With the increase of communication capacity, the traditional optical fiber communication technology can no longer meet the demand, and the technology of mode division multiplexing and wavelength division multiplexing has been developed rapidly. The wavelength division multiplexing technology mainly uses different wavelengths in the optical fiber for multiplexing communication, and the mode division multiplexing technology mainly uses the high-order mode in the optical fiber for multiplexing communication, which can greatly improve the communication capacity of the optical fiber. Therefore, For the generation of higher-order patterns, conversion is very important. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293G02B6/255
CPCG02B6/2938G02B6/2552
Inventor 曾祥龙王腾黄译平石帆尧涵程培康
Owner SHANGHAI UNIV
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