A Reconfigurable Optical Filter Based on Microring Array

A technology of optical filter and microring waveguide, which is applied in the field of optical fiber communication and integrated photonics, can solve the problem of single filtering function of the filter, achieve the effect of realizing diversity and improving dynamic flexibility

Active Publication Date: 2021-11-02
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a reconfigurable filter based on a microring array, the purpose of which is to introduce an optical coupler structure with reconfigurable switching states in the coupling region of the microring array , can independently control whether the coupling effect occurs in each coupling area, and then design and combine the switching states of each coupling area, thereby solving the technical problem of single filtering function of the filter based on the micro-ring structure

Method used

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  • A Reconfigurable Optical Filter Based on Microring Array
  • A Reconfigurable Optical Filter Based on Microring Array
  • A Reconfigurable Optical Filter Based on Microring Array

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Embodiment 1

[0046] image 3 It is an equivalent structure diagram of the topology proposed by the present invention as a straight-through type multi-ring cascade, and various coupling zone switch states. like image 3 As shown, the straight-through type multi-riped zeductive structure is characterized by all microcitrocitussions and the same bus waveguide coupling, and the various micro rings are not coupling, and the basic architecture is image 3 The above figure shows. The corresponding four-ring reconfigurable light filter in each coupling region image 3 The following figure shows. It can be seen that when the four micro rings and the coupling region between the first bus waveguide and the coupling zone between the micro rings are set to be closed, it can correspond to the straight-type multi-ri-riped zoom, and it is obtained at the output. The corresponding notch filtering characteristics.

Embodiment 2

[0048] Figure 4 It is an equivalent structural diagram of the topology proposed by the present invention to upload the down-loaded multi-ring cascade and each coupling zone switch state. like Figure 4 As shown, the uploading of the down-loaded multi-ring cascade topology is characterized by all microencyclic average and the first bus waveguide coupled to the second bus waveguide, but the micro rings are not coupling, and the basic architecture is as Figure 4 The above figure shows. The corresponding four-ring reconfigurable light filter in each coupling region Figure 4 As shown in the figure below, it can be seen that when only the working state of the coupling zone between the four micro rings is set to be closed, it can be corresponding to the uploaded multi-ri-riped stage, and the corresponding notch is obtained in the straight-through end. Filter characteristics, obtain the corresponding bandpass filtering characteristics at the download end.

Embodiment 3

[0050] Figure 5 It is an equivalent structure diagram of the topologies proposed by the present invention as a multi-ring series and various coupling zone switches. like Figure 5 As shown, the multi-ring series topology is characterized by a coupling between adjacent microides, and only the first micro-ring and the last micro ring are coupled to the first bus waveguide and the second bus waveguide, and the remaining micro rings are not Bus waveguide coupling. Its basic architecture Figure 5 In the above figure, the corresponding four-ring reconfigurable light filter has a switch state of each coupling region. Figure 5 As shown in the figure below, it can be seen that when the top three micro-rings and the first bus waveguide, the working state of the coupling zone between the three micro rings and the second bus waveguide is set, the rest When the coupling zone is set to open, it can correspond to the multi-ring series top, and the corresponding bandpass filtering characteristics...

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Abstract

The invention discloses a reconfigurable optical filter based on a microring array, which belongs to the technical field of optical fiber communication and integrated photonics. The filter includes a first bus waveguide, a second bus waveguide and a plurality of microrings; the first bus waveguide A plurality of microrings are connected in parallel with the second bus waveguide; a plurality of microrings are equidistantly arranged between the first bus waveguide and the second bus waveguide; a coupling area is provided between the microring and the first bus waveguide; the microring A coupling area is set between the second bus waveguide; a coupling area is set between adjacent microrings; each coupling area is equipped with a reconfigurable optical coupler, and the switch state of the reconfigurable optical coupler can be independently adjusted . The present invention introduces an optocoupler structure with reconfigurable switching state in the coupling area of ​​the microring array, which can independently control whether the coupling effect occurs in each coupling area, and then combine the switching states of each coupling area by design, and can be used in one-dimensional micro A variety of topological structures are implemented in the ring array, which realizes the diversity of filtering functions.

Description

Technical field [0001] The present invention pertains to fiber optic communications and integrated photonics technology, and more particularly, to a reconfigurable array based on micro-optical filter ring. Background technique [0002] Optical communications is one of modern information and transmission of the most important ways, we are moving towards ultra high-speed, high-capacity, high-speed, long-distance, low-cost direction. For full use of the optical wavelength filter optical network resources, the network protection system to maximize unobstructed channel plays an important role, is the all-optical signal processing and WDM systems important device. Micro loop filter is an optical filter. Passive microring, such as silicon, silicon micro-ring filter using the amplitude response of the microring optical signal and phase response characteristics processing, and filtering; using thermo-optic effect, the plasma dispersion effect and the like, can realize good center frequenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/293
CPCG02B6/29343
Inventor 张敏明姚欣怡刘德明
Owner HUAZHONG UNIV OF SCI & TECH
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