WO2019010667A1 - Photonic crystal fibre electro-optic switch and preparation method therefor - Google Patents

Photonic crystal fibre electro-optic switch and preparation method therefor Download PDF

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Publication number
WO2019010667A1
WO2019010667A1 PCT/CN2017/092774 CN2017092774W WO2019010667A1 WO 2019010667 A1 WO2019010667 A1 WO 2019010667A1 CN 2017092774 W CN2017092774 W CN 2017092774W WO 2019010667 A1 WO2019010667 A1 WO 2019010667A1
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photonic crystal
crystal fiber
electro
electrodes
fiber
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PCT/CN2017/092774
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French (fr)
Chinese (zh)
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王义平
张峰
王英
廖常锐
何俊
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深圳大学
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Priority to PCT/CN2017/092774 priority Critical patent/WO2019010667A1/en
Publication of WO2019010667A1 publication Critical patent/WO2019010667A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes

Definitions

  • the invention belongs to the technical field of electro-optical switches, and in particular relates to a photonic crystal fiber electro-optic switch and a preparation method thereof.
  • electro-optical switches As a key component of optical communication and next-generation all-optical networks, electro-optical switches have been widely used in optical layer routing, optical cross-connect, optical add-drop multiplexing, optical network monitoring and other fields.
  • a typical electro-optic switch is a directional-coupled electro-optic switch, but it produces a large loss when the fiber is coupled.
  • the coupling efficiency of the existing integrated waveguide and the optical fiber can reach more than 60%, but the additional loss caused by the coupling is much higher than the connection loss of the all-fiber device.
  • the main schemes of fiber optic electro-optical switches are fiber Bragg grating type, long-period fiber grating type, photonic crystal fiber band gap type, etc., but their switching power is high and the response time of electro-optical switches is slow.
  • the main object of the present invention is to provide a photonic crystal fiber electro-optical switch and a preparation method thereof, aiming at solving the technical problem that the connection loss is large, the coupling additional loss is large, the switching power is high, and the response time is slow when the electro-optical switch is coupled with the optical fiber. .
  • the present invention provides a photonic crystal fiber electro-optic switch comprising: a photonic crystal fiber, two electrodes, a waveguide, and an external voltage device;
  • the electrode and the waveguide are located inside the photonic crystal fiber;
  • the waveguide includes a core of the photonic crystal fiber and a liquid material filled in a first cladding region of the photonic crystal fiber;
  • the electrode is formed of a metal material filled in a pore of a second cladding region of the photonic crystal fiber;
  • the side surface of the photonic crystal fiber is provided with two holes, and the two holes are respectively connected to two electrodes, the holes are filled with a conductive material, and the external voltage device passes through the conductive material and the electrode Connected into a pathway.
  • the two electrodes are symmetrically distributed around the core of the photonic crystal fiber, and the first cladding region filled with the liquid material is symmetrically distributed around the core of the photonic crystal fiber.
  • the first cladding region air hole is located between the two electrodes.
  • the material of the metal material is a low resistance conductive metal material.
  • the metal material is gold or silver.
  • liquid material is a liquid material having an electrooptic effect.
  • liquid material is a liquid crystal material.
  • the overall shape of the pores in the cladding region of the end face of the photonic crystal fiber is hexagonal.
  • the core of the photonic crystal fiber is a solid core.
  • the present invention also provides a method for fabricating a photonic crystal fiber electro-optical switch, the method comprising:
  • the two ends of the photonic crystal fiber are respectively spliced to the single-mode optical fiber, and the single-mode optical fiber at one end of the fusion bonding point is cut at a distance of 10 ⁇ m;
  • Two holes are formed on the side of the photonic crystal fiber, and the hole is filled with a conductive material and connected to an external voltage device to form a photonic crystal fiber electro-optic switch.
  • the femtosecond laser micromachining technology selectively opens the remaining single-mode fiber sheets at the cutting point, and fills the selectively opened two second cladding regions with metal materials to form two
  • the steps of the electrode include:
  • the metal materials are filled in the pores of the two second cladding regions after the melt taper treatment to form two electrodes.
  • the invention provides a method for preparing a photonic crystal fiber electro-optic switch, wherein the photonic crystal fiber electro-optic switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device, the electrode and the waveguide are located inside the photonic crystal fiber, and the waveguide comprises a photonic crystal.
  • the photonic crystal fiber electro-optic switch in the embodiment of the invention uses a photonic crystal fiber as a carrier, which can effectively reduce the connection loss.
  • the switching power can be reduced, and the built-in power can be reduced.
  • the coupling of the electrodes to the waveguide reduces coupling loss and reduces response time.
  • FIG. 1 is a schematic structural view of a photonic crystal fiber electro-optical switch according to a first embodiment of the present invention
  • 2-1 is a schematic structural diagram of an end surface of a photonic crystal fiber according to a first embodiment of the present invention
  • FIG. 2-2 is a schematic structural diagram of an end surface of an expanded photonic crystal fiber according to a first embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a method for preparing a photonic crystal fiber electro-optical switch according to a second embodiment of the present invention
  • FIG. 4 is a schematic flow chart of the refinement step of step S302 in the embodiment shown in FIG. 3.
  • FIG. 1 Schematic diagram of the end face structure of the crystal fiber, the photonic crystal fiber electro-optic switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device;
  • the electrode and the waveguide are located inside the photonic crystal fiber;
  • the waveguide includes a core of the photonic crystal fiber and a liquid material filled in the pores of the first cladding region of the photonic crystal fiber;
  • the electrode is formed of a metal material filled in the pores of the second cladding region of the photonic crystal fiber;
  • the side of the photonic crystal fiber is provided with two holes, and the two holes are respectively connected to the two electrodes, the holes are filled with a conductive material, and the external voltage device is connected to the electrodes through a conductive material to form a path.
  • the second cladding region is subjected to high pressure treatment, and then the second cladding layer after high pressure treatment is performed in the microcell preparation region.
  • the pores of the zone are subjected to a melt taper treatment.
  • the pores in the second cladding region filled with the high pressure gas under high pressure are expanded, and the pores in the surrounding cladding region are gradually collapsed to form an expansion as shown in Fig. 2-2.
  • the second cladding zone is vented.
  • the pores in the cladding region are multi-circle hexagons centered on the core of the photonic crystal fiber, and the pores in the first cladding region are located in the fiber of the photonic crystal fiber.
  • the second cladding region is located in the third to sixth-circle hexagons centered on the core of the photonic crystal fiber.
  • the second cladding region is located in a fourth-circle hexagon centered on the core of the photonic crystal fiber.
  • the second of the first and second cladding regions of the first cladding region is for distinguishing different cladding regions.
  • the two electrodes are symmetrically distributed around the core of the photonic crystal fiber, and the first cladding region filled with the liquid material is symmetrically distributed around the core of the photonic crystal fiber.
  • a cladding zone vent is located between the two electrodes.
  • the material of the metal material is a low resistance conductive metal material.
  • the use of a low-resistance conductive metal material ensures that lower heat is generated upon energization.
  • the metal material is gold or silver.
  • liquid material is a liquid material having an electrooptic effect.
  • liquid material is a liquid crystal material.
  • the overall shape of the pores in the cladding region of the end face of the photonic crystal fiber is hexagonal.
  • a photonic crystal fiber having a hexagonal shape as a whole of the pores in the cladding region is used, and a photonic crystal fiber of other arrangement manner may be used, as long as the photonic crystal fiber is centered on the core.
  • a plurality of symmetrically distributed cladding regions are used, as long as the photonic crystal fiber is centered on the core.
  • the photonic crystal fiber electro-optic switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device, and the waveguide comprises a core of the photonic crystal fiber and is filled in the first cladding region of the photonic crystal fiber.
  • the liquid material, the electrode and the waveguide are located inside the photonic crystal fiber, and the electrode is formed by a metal material filled in the pores of the second cladding region of the photonic crystal fiber, and the side of the photonic crystal fiber is provided with two holes, two holes They are respectively connected to two electrodes, the holes are filled with a conductive material, and the external voltage device is connected to the electrodes through a conductive material to form a path.
  • the photonic crystal fiber electro-optic switch in the embodiment of the invention uses a photonic crystal fiber as a carrier, which can effectively reduce the connection loss.
  • the switching power can be reduced, and the built-in power can be reduced.
  • the coupling of the electrodes to the waveguide reduces coupling loss and reduces response time.
  • FIG. 3 is a schematic flow chart of a method for fabricating a photonic crystal fiber electro-optic switch according to a second embodiment of the present invention.
  • the method is used for preparing a photonic crystal fiber electro-optic switch according to any one of claims 1 to 8, the method comprising :
  • Step S301 The two ends of the photonic crystal fiber are respectively spliced with the single-mode fiber, and the single-mode fiber at one end of the welding point is cut at a distance of 10 ⁇ m;
  • Step S302 selectively opening the remaining single-mode fiber sheet at the cutting portion by femtosecond laser micro-machining technology, and filling the selectively opened two second cladding regions with a metal material to form two electrodes;
  • step S302 includes:
  • Step S401 performing selective opening of the remaining single-mode optical fiber sheets at the cutting position by femtosecond laser micro-machining technology, and performing high-pressure processing on the selectively opened two second cladding regions.
  • the air holes of the second cladding region are symmetrically distributed around the core.
  • the pores in the cladding region are multi-circle hexagons centered on the core of the photonic crystal fiber, and the pores in the second cladding region are located in the fiber of the photonic crystal fiber.
  • the core is centered in the third to sixth circle of the hexagon.
  • the second cladding region is located in a fourth-circle hexagon centered on the core of the photonic crystal fiber.
  • Step S402 performing melt taper processing on the pores of the two second cladding regions that have been subjected to high pressure processing
  • the stomata of the second cladding region shown in FIG. 2-1 is subjected to high pressure processing, and then the stomata of the second cladding region after the high pressure treatment is subjected to fusion taper processing in the microcell preparation region.
  • the high-pressure treated second cladding region filled with high-pressure gas will expand, and the surrounding cladding region will gradually collapse, forming an expanded second cladding region as shown in Figure 2-2.
  • the pores in the second cladding region after the molten taper treatment are still symmetrically distributed around the core.
  • step S403 the metal materials are filled into the pores of the two second cladding regions after the melt taper processing to form two electrodes.
  • the material of the metal material is a low-resistance conductive metal material, and the low-resistance conductive metal material can ensure low heat generation when energized.
  • the metallic material is gold or silver.
  • Step S303 selectively opening the single-mode optical fiber sheet by femtosecond laser micro-machining technology, and filling the liquid materials of the two first cladding regions selectively opened;
  • the liquid material is a liquid material having an electrooptic effect.
  • the pores in the cladding region are multi-circle hexagons centered on the core of the photonic crystal fiber, and the pores in the first cladding region are located in the fiber of the photonic crystal fiber.
  • the core is centered in the second circle of hexagons.
  • the liquid material is a liquid crystal material.
  • the liquid material since the diameter of the pores in the first cladding region is extremely small and has surface tension, the liquid material does not flow out after filling the liquid material.
  • the end of the selectively opened two first cladding regions is welded to the single mode fiber, and the single mode fiber of the end is cut at a distance of 10 ⁇ m from the fusion point.
  • the single-mode optical fiber sheet remaining after the cutting process seals the pores in the first cladding region, and the liquid material does not flow out.
  • Step S304 two holes are formed on the side of the photonic crystal fiber, and the hole is filled with a conductive material and connected to an external voltage device to form a photonic crystal fiber electro-optic switch.
  • FIG. 1 the structure diagram of the photonic crystal fiber electro-optic switch shown in FIG. 1.
  • One end of the external voltage device is connected to one hole, and the other end of the external voltage device is connected to another hole, thereby forming a path.
  • the two ends of the photonic crystal fiber are respectively spliced with the single-mode optical fiber, and the single-mode optical fiber at one end of the fusion-welding point is cut at a distance of 10 ⁇ m, and the remaining singles are cut by the femtosecond laser micro-machining technology.
  • the mold fiber sheet is selectively opened, and the metal materials are filled into the selectively opened two second cladding regions to form two electrodes, and the single mode fiber sheet is selectively selected by femtosecond laser micromachining technology.
  • the photonic crystal fiber electro-optic switch in the embodiment of the invention uses a photonic crystal fiber as a carrier, which can effectively reduce the connection loss.
  • the switching power can be reduced, and the built-in power can be reduced.
  • the coupling of the electrodes to the waveguide reduces coupling loss and reduces response time.

Abstract

Provided is a photonic crystal fibre electro-optic switch. The photonic crystal fibre electro-optic switch comprises: a photonic crystal fibre, two electrodes, a waveguide and an external voltage apparatus, wherein the electrodes and the waveguide are located inside the photonic crystal fibre; the waveguide comprises a fibre core of the photonic crystal fibre and a liquid material filled in a first cladding area air hole in the photonic crystal fibre; the electrodes are formed by a metal material filled in a second cladding area air hole in the photonic crystal fibre; a side face of the photonic crystal fibre is provided with two holes; the two holes are respectively connected to the two electrodes, and the holes are filled with conductive materials; and the external voltage apparatus is connected to the electrodes by means of the conductive materials to form a path. A preparation method for a photonic crystal fibre electro-optic switch. The effects of low connection loss, low additional loss of coupling, low switch power and fast response are achieved.

Description

一种光子晶体光纤电光开关及其制备方法Photonic crystal fiber electro-optic switch and preparation method thereof 技术领域Technical field
本发明属于电光开关技术领域，尤其涉及一种光子晶体光纤电光开关及其制备方法。 The invention belongs to the technical field of electro-optical switches, and in particular relates to a photonic crystal fiber electro-optic switch and a preparation method thereof.
背景技术Background technique
电光开关作为光通信和新一代全光网络的关键器件，已被广泛应用于光层路由选择、光交叉连接、光分插复用、光网络监控等领域。比较典型的电光开关是定向耦合型电光开关，但其在光纤耦合连接时会产生较大损耗。而现有的集成波导与光纤的耦合效率虽可以达到60%以上，但是耦合带来的附加损耗却远远高于全光纤器件的连接损耗。光纤电光开关的主流方案有光纤布拉格光栅型、长周期光纤光栅型、光子晶体光纤带隙型等，但其开关功率高且电光开关的响应时间慢。As a key component of optical communication and next-generation all-optical networks, electro-optical switches have been widely used in optical layer routing, optical cross-connect, optical add-drop multiplexing, optical network monitoring and other fields. A typical electro-optic switch is a directional-coupled electro-optic switch, but it produces a large loss when the fiber is coupled. However, the coupling efficiency of the existing integrated waveguide and the optical fiber can reach more than 60%, but the additional loss caused by the coupling is much higher than the connection loss of the all-fiber device. The main schemes of fiber optic electro-optical switches are fiber Bragg grating type, long-period fiber grating type, photonic crystal fiber band gap type, etc., but their switching power is high and the response time of electro-optical switches is slow.
因此，现有技术中存在着电光开关与光纤耦合时会连接损耗大、耦合附加损耗大、开关功率高及响应时间慢的技术问题。Therefore, in the prior art, there is a technical problem that when the electro-optical switch is coupled with the optical fiber, the connection loss is large, the coupling additional loss is large, the switching power is high, and the response time is slow.
技术问题technical problem
本发明的主要目的在于提出一种光子晶体光纤电光开关及其制备方法，旨在解决存在着电光开关与光纤耦合时会连接损耗大、耦合附加损耗大、开关功率高及响应时间慢的技术问题。 The main object of the present invention is to provide a photonic crystal fiber electro-optical switch and a preparation method thereof, aiming at solving the technical problem that the connection loss is large, the coupling additional loss is large, the switching power is high, and the response time is slow when the electro-optical switch is coupled with the optical fiber. .
技术解决方案Technical solution
为实现上述目的，本发明提供一种光子晶体光纤电光开关，所述光子晶体光纤电光开关包括：光子晶体光纤、两个电极、波导及外接电压装置；To achieve the above object, the present invention provides a photonic crystal fiber electro-optic switch comprising: a photonic crystal fiber, two electrodes, a waveguide, and an external voltage device;
所述电极及所述波导位于所述光子晶体光纤的内部；The electrode and the waveguide are located inside the photonic crystal fiber;
所述波导包括所述光子晶体光纤的纤芯及填充在所述光子晶体光纤的第一包层区气孔中的液体材料；The waveguide includes a core of the photonic crystal fiber and a liquid material filled in a first cladding region of the photonic crystal fiber;
所述电极由填充在所述光子晶体光纤的第二包层区气孔中的金属材料所形成；The electrode is formed of a metal material filled in a pore of a second cladding region of the photonic crystal fiber;
所述光子晶体光纤的的侧面设有两个孔，两个所述孔分别与两个所述电极相连，所述孔中填充导电材料，所述外接电压装置通过所述导电材料与所述电极连接成通路。The side surface of the photonic crystal fiber is provided with two holes, and the two holes are respectively connected to two electrodes, the holes are filled with a conductive material, and the external voltage device passes through the conductive material and the electrode Connected into a pathway.
进一步地，两个所述电极以所述光子晶体光纤的纤芯为中心呈对称分布，填充了液体材料的所述第一包层区气孔以所述光子晶体光纤的纤芯为中心呈对称分布，所述第一包层区气孔位于所述两个电极之间。Further, the two electrodes are symmetrically distributed around the core of the photonic crystal fiber, and the first cladding region filled with the liquid material is symmetrically distributed around the core of the photonic crystal fiber. The first cladding region air hole is located between the two electrodes.
进一步地，所述金属材料的材料为低电阻导电金属材料。Further, the material of the metal material is a low resistance conductive metal material.
进一步地，所述金属材料为金或银。Further, the metal material is gold or silver.
进一步地，所述液体材料为具有电光效应的液体材料。Further, the liquid material is a liquid material having an electrooptic effect.
进一步地，所述液体材料为液晶材料。Further, the liquid material is a liquid crystal material.
进一步地，所述光子晶体光纤的端面分布的包层区气孔的整体形状为六边形。Further, the overall shape of the pores in the cladding region of the end face of the photonic crystal fiber is hexagonal.
进一步地，所述光子晶体光纤的纤芯为实芯纤芯。Further, the core of the photonic crystal fiber is a solid core.
为实现上述目的，本发明还提供一种光子晶体光纤电光开关的制备方法，所述方法包括：To achieve the above object, the present invention also provides a method for fabricating a photonic crystal fiber electro-optical switch, the method comprising:
将所述光子晶体光纤的两端分别与单模光纤熔接，且将距离熔接点10μm处的一端单模光纤进行切断处理；The two ends of the photonic crystal fiber are respectively spliced to the single-mode optical fiber, and the single-mode optical fiber at one end of the fusion bonding point is cut at a distance of 10 μm;
通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并向选择性打开的2个第二包层区气孔中填充金属材料，以形成两个电极；Selectively opening the remaining single-mode fiber sheet at the cutting point by femtosecond laser micromachining technology, and filling the selectively opened two second cladding regions with a metal material to form two electrodes;
通过所述飞秒激光微加工技术再次对所述单模光纤薄片进行选择性开孔，并向选择性打开的2个第一包层区气孔中填充液体材料；Performing the selective opening of the single-mode fiber sheet by the femtosecond laser micromachining technology, and filling the liquid materials of the two first cladding regions selectively opened;
在所述光子晶体光纤的侧面打两个孔，向所述孔中填充导电材料并接入外接电压装置，以形成光子晶体光纤电光开关。Two holes are formed on the side of the photonic crystal fiber, and the hole is filled with a conductive material and connected to an external voltage device to form a photonic crystal fiber electro-optic switch.
进一步地，所述通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并向选择性打开的2个第二包层区气孔中填充金属材料，以形成两个电极的步骤包括：Further, the femtosecond laser micromachining technology selectively opens the remaining single-mode fiber sheets at the cutting point, and fills the selectively opened two second cladding regions with metal materials to form two The steps of the electrode include:
通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并对选择性打开的2个第二包层区气孔进行高压处理；Selectively opening the remaining single-mode fiber sheets at the cutting point by femtosecond laser micromachining technology, and performing high-pressure treatment on the selectively opened two second cladding regions.
对已进行高压处理的2个第二包层区气孔进行熔融拉锥处理；Performing a melt taper process on the pores of the two second cladding regions that have been subjected to high pressure treatment;
向进行熔融拉锥处理后的2个第二包层区气孔中填充金属材料，以形成两个电极。The metal materials are filled in the pores of the two second cladding regions after the melt taper treatment to form two electrodes.
有益效果Beneficial effect
本发明提出的一种光子晶体光纤电光开关的制备方法，光子晶体光纤电光开关包括：光子晶体光纤、两个电极、波导及外接电压装置，电极及波导位于光子晶体光纤的内部，波导包括光子晶体光纤的纤芯及填充在光子晶体光纤的第一包层区气孔中的液体材料，电极由填充在光子晶体光纤的第二包层区气孔中的金属材料所形成，光子晶体光纤的的侧面设有两个孔，两个孔分别与两个电极相连，孔中填充导电材料，外接电压装置通过导电材料与电极连接成通路。与现有技术相比，本发明实施例中的光子晶体光纤电光开关以光子晶体光纤为载体，可有效降低连接损耗，通过将电极内置在光子晶体光纤电光开关中，可以降低开关功率，通过内置电极与波导的耦合可以减少耦合附加损耗以及减少响应时间。 The invention provides a method for preparing a photonic crystal fiber electro-optic switch, wherein the photonic crystal fiber electro-optic switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device, the electrode and the waveguide are located inside the photonic crystal fiber, and the waveguide comprises a photonic crystal. a core of the optical fiber and a liquid material filled in the pores of the first cladding region of the photonic crystal fiber, the electrode being formed of a metal material filled in the pores of the second cladding region of the photonic crystal fiber, and a side surface of the photonic crystal fiber There are two holes, two holes are respectively connected with two electrodes, the holes are filled with a conductive material, and an external voltage device is connected to the electrodes through a conductive material to form a path. Compared with the prior art, the photonic crystal fiber electro-optic switch in the embodiment of the invention uses a photonic crystal fiber as a carrier, which can effectively reduce the connection loss. By incorporating the electrode in the photonic crystal fiber electro-optical switch, the switching power can be reduced, and the built-in power can be reduced. The coupling of the electrodes to the waveguide reduces coupling loss and reduces response time.
附图说明DRAWINGS
图1是本发明第一实施例提供的一种光子晶体光纤电光开关的结构示意图；1 is a schematic structural view of a photonic crystal fiber electro-optical switch according to a first embodiment of the present invention;
图2-1为本发明第一实施例提供的一种光子晶体光纤的端面结构示意图；2-1 is a schematic structural diagram of an end surface of a photonic crystal fiber according to a first embodiment of the present invention;
图2-2为本发明第一实施例提供的一种膨胀的光子晶体光纤的端面结构示意图；2-2 is a schematic structural diagram of an end surface of an expanded photonic crystal fiber according to a first embodiment of the present invention;
图3为本发明第二实施例提供的一种光子晶体光纤电光开关的制备方法的流程示意图；3 is a schematic flow chart of a method for preparing a photonic crystal fiber electro-optical switch according to a second embodiment of the present invention;
图4为图3所示的实施例中的步骤S302的细化步骤的流程示意图。FIG. 4 is a schematic flow chart of the refinement step of step S302 in the embodiment shown in FIG. 3.
本发明的实施方式Embodiments of the invention
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而非全部实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. The embodiments are merely a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
为了说明本发明的技术方案，下面通过具体实施例来进行说明。In order to explain the technical solution of the present invention, the following description will be made by way of specific embodiments.
为了更好的理解本发明，请参阅图1所示的一种光子晶体光纤电光开关的结构示意图、图2-1所示的光子晶体光纤的端面结构示意图及图2-2所示膨胀的光子晶体光纤的端面结构示意图，光子晶体光纤电光开关包括：光子晶体光纤、两个电极、波导及外接电压装置；For a better understanding of the present invention, please refer to the structural diagram of a photonic crystal fiber electro-optic switch shown in FIG. 1, the end face structure diagram of the photonic crystal fiber shown in FIG. 2-1, and the expanded photon shown in FIG. 2-2. Schematic diagram of the end face structure of the crystal fiber, the photonic crystal fiber electro-optic switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device;
电极及波导位于光子晶体光纤的内部；The electrode and the waveguide are located inside the photonic crystal fiber;
波导包括光子晶体光纤的纤芯及填充在光子晶体光纤的第一包层区气孔中的液体材料；The waveguide includes a core of the photonic crystal fiber and a liquid material filled in the pores of the first cladding region of the photonic crystal fiber;
电极由填充在光子晶体光纤的第二包层区气孔中的金属材料所形成；The electrode is formed of a metal material filled in the pores of the second cladding region of the photonic crystal fiber;
光子晶体光纤的的侧面设有两个孔，两个孔分别与两个电极相连，孔中填充导电材料，外接电压装置通过导电材料与电极连接成通路。The side of the photonic crystal fiber is provided with two holes, and the two holes are respectively connected to the two electrodes, the holes are filled with a conductive material, and the external voltage device is connected to the electrodes through a conductive material to form a path.
在本发明实施例中，请参阅图2-1所示的第二包层区气孔，对第二包层区气孔进行高压处理，再在微单元制备区域对进行高压处理后的第二包层区气孔进行熔融拉锥处理，此时高压处理的充有高压气体的第二包层区气孔会膨胀，而周围的包层区气孔会逐渐塌缩，形成如图2-2所示的膨胀的第二包层区气孔。In the embodiment of the present invention, referring to the second cladding region vent as shown in FIG. 2-1, the second cladding region is subjected to high pressure treatment, and then the second cladding layer after high pressure treatment is performed in the microcell preparation region. The pores of the zone are subjected to a melt taper treatment. At this time, the pores in the second cladding region filled with the high pressure gas under high pressure are expanded, and the pores in the surrounding cladding region are gradually collapsed to form an expansion as shown in Fig. 2-2. The second cladding zone is vented.
需要注意的是，如图2-1及2-2所示，包层区气孔以光子晶体光纤的纤芯为中心构成多圈六边形，第一包层区气孔位于以光子晶体光纤的纤芯为中心的第二圈六边形中，第二包层区气孔位于以光子晶体光纤的纤芯为中心的第三圈至第六圈六边形中。It should be noted that, as shown in Figures 2-1 and 2-2, the pores in the cladding region are multi-circle hexagons centered on the core of the photonic crystal fiber, and the pores in the first cladding region are located in the fiber of the photonic crystal fiber. In the second-circle hexagon with the core centered, the second cladding region is located in the third to sixth-circle hexagons centered on the core of the photonic crystal fiber.
优选的，第二包层区气孔位于以光子晶体光纤的纤芯为中心的第四圈六边形中。Preferably, the second cladding region is located in a fourth-circle hexagon centered on the core of the photonic crystal fiber.
其中，第一包层区气孔中的第一和第二包层区气孔中的第二是用于区分不同的包层区气孔。Wherein the second of the first and second cladding regions of the first cladding region is for distinguishing different cladding regions.
进一步地，参阅图2-2，两个电极以光子晶体光纤的纤芯为中心呈对称分布，填充了液体材料的第一包层区气孔以光子晶体光纤的纤芯为中心呈对称分布，第一包层区气孔位于两个电极之间。Further, referring to FIG. 2-2, the two electrodes are symmetrically distributed around the core of the photonic crystal fiber, and the first cladding region filled with the liquid material is symmetrically distributed around the core of the photonic crystal fiber. A cladding zone vent is located between the two electrodes.
进一步地，金属材料的材料为低电阻导电金属材料。Further, the material of the metal material is a low resistance conductive metal material.
在本发明实施例中，采用低电阻导电金属材料可以保证在通电时产生较低的热量。In the embodiment of the present invention, the use of a low-resistance conductive metal material ensures that lower heat is generated upon energization.
进一步地，金属材料为金或银。Further, the metal material is gold or silver.
进一步地，液体材料为具有电光效应的液体材料。Further, the liquid material is a liquid material having an electrooptic effect.
进一步地，液体材料为液晶材料。Further, the liquid material is a liquid crystal material.
进一步地，参阅图2-1，光子晶体光纤的端面分布的包层区气孔的整体形状为六边形。Further, referring to FIG. 2-1, the overall shape of the pores in the cladding region of the end face of the photonic crystal fiber is hexagonal.
在本发明实施例中，采用的是包层区气孔的整体形状为六边形的光子晶体光纤，也可以采用其他的排布方式的光子晶体光纤，只要该光子晶体光纤以纤芯为中心有多个对称分布的包层区气孔。In the embodiment of the present invention, a photonic crystal fiber having a hexagonal shape as a whole of the pores in the cladding region is used, and a photonic crystal fiber of other arrangement manner may be used, as long as the photonic crystal fiber is centered on the core. A plurality of symmetrically distributed cladding regions.
在本发明实施例中，光子晶体光纤电光开关包括：光子晶体光纤、两个电极、波导及外接电压装置，波导包括光子晶体光纤的纤芯及填充在光子晶体光纤的第一包层区气孔中的液体材料，电极及波导位于光子晶体光纤的内部，电极由填充在光子晶体光纤的第二包层区气孔中的金属材料所形成，光子晶体光纤的的侧面设有两个孔，两个孔分别与两个电极相连，孔中填充导电材料，外接电压装置通过导电材料与电极连接成通路。与现有技术相比，本发明实施例中的光子晶体光纤电光开关以光子晶体光纤为载体，可有效降低连接损耗，通过将电极内置在光子晶体光纤电光开关中，可以降低开关功率，通过内置电极与波导的耦合可以减少耦合附加损耗以及减少响应时间。In the embodiment of the present invention, the photonic crystal fiber electro-optic switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device, and the waveguide comprises a core of the photonic crystal fiber and is filled in the first cladding region of the photonic crystal fiber. The liquid material, the electrode and the waveguide are located inside the photonic crystal fiber, and the electrode is formed by a metal material filled in the pores of the second cladding region of the photonic crystal fiber, and the side of the photonic crystal fiber is provided with two holes, two holes They are respectively connected to two electrodes, the holes are filled with a conductive material, and the external voltage device is connected to the electrodes through a conductive material to form a path. Compared with the prior art, the photonic crystal fiber electro-optic switch in the embodiment of the invention uses a photonic crystal fiber as a carrier, which can effectively reduce the connection loss. By incorporating the electrode in the photonic crystal fiber electro-optical switch, the switching power can be reduced, and the built-in power can be reduced. The coupling of the electrodes to the waveguide reduces coupling loss and reduces response time.
请参阅图3，为本发明第二实施例提供的一种光子晶体光纤电光开关的制备方法的流程示意图，方法用于制备如权利要求1至8任意一项的光子晶体光纤电光开关，方法包括：3 is a schematic flow chart of a method for fabricating a photonic crystal fiber electro-optic switch according to a second embodiment of the present invention. The method is used for preparing a photonic crystal fiber electro-optic switch according to any one of claims 1 to 8, the method comprising :
步骤S301、将光子晶体光纤的两端分别与单模光纤熔接，且将距离熔接点10μm处的一端单模光纤进行切断处理；Step S301: The two ends of the photonic crystal fiber are respectively spliced with the single-mode fiber, and the single-mode fiber at one end of the welding point is cut at a distance of 10 μm;
步骤S302、通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并向选择性打开的2个第二包层区气孔中填充金属材料，以形成两个电极；Step S302, selectively opening the remaining single-mode fiber sheet at the cutting portion by femtosecond laser micro-machining technology, and filling the selectively opened two second cladding regions with a metal material to form two electrodes;
进一步地，请参阅图4，步骤S302包括：Further, referring to FIG. 4, step S302 includes:
步骤S401、通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并对选择性打开的2个第二包层区气孔进行高压处理；Step S401, performing selective opening of the remaining single-mode optical fiber sheets at the cutting position by femtosecond laser micro-machining technology, and performing high-pressure processing on the selectively opened two second cladding regions.
在本发明实施例中，请参阅图2-1，第二包层区气孔以纤芯为中心呈对称分布。In the embodiment of the present invention, referring to FIG. 2-1, the air holes of the second cladding region are symmetrically distributed around the core.
需要注意的是，如图2-1及2-2所示，包层区气孔以光子晶体光纤的纤芯为中心构成多圈六边形，第二包层区气孔位于以光子晶体光纤的纤芯为中心的第三圈至第六圈六边形中。It should be noted that, as shown in Figures 2-1 and 2-2, the pores in the cladding region are multi-circle hexagons centered on the core of the photonic crystal fiber, and the pores in the second cladding region are located in the fiber of the photonic crystal fiber. The core is centered in the third to sixth circle of the hexagon.
优选的，第二包层区气孔位于以光子晶体光纤的纤芯为中心的第四圈六边形中。Preferably, the second cladding region is located in a fourth-circle hexagon centered on the core of the photonic crystal fiber.
步骤S402、对已进行高压处理的2个第二包层区气孔进行熔融拉锥处理；Step S402, performing melt taper processing on the pores of the two second cladding regions that have been subjected to high pressure processing;
在本发明实施例中，对图2-1所示的第二包层区气孔进行高压处理，再在微单元制备区域对进行高压处理后的第二包层区气孔进行熔融拉锥处理，此时高压处理的充有高压气体的第二包层区气孔会膨胀，而周围的包层区气孔会逐渐塌缩，形成如图2-2所示的膨胀的第二包层区气孔。In the embodiment of the present invention, the stomata of the second cladding region shown in FIG. 2-1 is subjected to high pressure processing, and then the stomata of the second cladding region after the high pressure treatment is subjected to fusion taper processing in the microcell preparation region. The high-pressure treated second cladding region filled with high-pressure gas will expand, and the surrounding cladding region will gradually collapse, forming an expanded second cladding region as shown in Figure 2-2.
其中，熔融拉锥处理后的第二包层区气孔仍以纤芯为中心呈对称分布。Wherein, the pores in the second cladding region after the molten taper treatment are still symmetrically distributed around the core.
步骤S403、向进行熔融拉锥处理后的2个第二包层区气孔中填充金属材料，以形成两个电极。In step S403, the metal materials are filled into the pores of the two second cladding regions after the melt taper processing to form two electrodes.
在本发明实施例中，金属材料的材料为低电阻导电金属材料，采用低电阻导电金属材料可以保证在通电时产生较低的热量。In the embodiment of the present invention, the material of the metal material is a low-resistance conductive metal material, and the low-resistance conductive metal material can ensure low heat generation when energized.
可选地，金属材料为金或银。Alternatively, the metallic material is gold or silver.
步骤S303、通过飞秒激光微加工技术再次对单模光纤薄片进行选择性开孔，并向选择性打开的2个第一包层区气孔中填充液体材料；Step S303, selectively opening the single-mode optical fiber sheet by femtosecond laser micro-machining technology, and filling the liquid materials of the two first cladding regions selectively opened;
在本发明实施例中，液体材料为具有电光效应的液体材料。In an embodiment of the invention, the liquid material is a liquid material having an electrooptic effect.
需要注意的是，如图2-1及2-2所示，包层区气孔以光子晶体光纤的纤芯为中心构成多圈六边形，第一包层区气孔位于以光子晶体光纤的纤芯为中心的第二圈六边形中。It should be noted that, as shown in Figures 2-1 and 2-2, the pores in the cladding region are multi-circle hexagons centered on the core of the photonic crystal fiber, and the pores in the first cladding region are located in the fiber of the photonic crystal fiber. The core is centered in the second circle of hexagons.
可选地，液体材料为液晶材料。Optionally, the liquid material is a liquid crystal material.
在本发明实施例中，因第一包层区气孔的直径极小，有表面张力，所以填充液体材料后，液体材料不会流出。In the embodiment of the present invention, since the diameter of the pores in the first cladding region is extremely small and has surface tension, the liquid material does not flow out after filling the liquid material.
可选地，在填充液体材料后，再次将选择性打开的2个第一包层区气孔所在的一端与单模光纤进行熔接，并在距离熔接点10μm处对该端的单模光纤进行切断处理，切断处理后剩余的单模光纤薄片封住了第一包层区气孔，液体材料就不会流出。Optionally, after filling the liquid material, the end of the selectively opened two first cladding regions is welded to the single mode fiber, and the single mode fiber of the end is cut at a distance of 10 μm from the fusion point. The single-mode optical fiber sheet remaining after the cutting process seals the pores in the first cladding region, and the liquid material does not flow out.
步骤S304、在光子晶体光纤的侧面打两个孔，向孔中填充导电材料并接入外接电压装置，以形成光子晶体光纤电光开关。Step S304, two holes are formed on the side of the photonic crystal fiber, and the hole is filled with a conductive material and connected to an external voltage device to form a photonic crystal fiber electro-optic switch.
在本发明实施中，请参阅图1所示的光子晶体光纤电光开关的结构示意图，外接电压装置一端接入一个孔中，外接电压装置另一端接入另一个孔中，即形成了通路。In the implementation of the present invention, please refer to the structure diagram of the photonic crystal fiber electro-optic switch shown in FIG. 1. One end of the external voltage device is connected to one hole, and the other end of the external voltage device is connected to another hole, thereby forming a path.
在本发明实施例中，将光子晶体光纤的两端分别与单模光纤熔接，且将距离熔接点10μm处的一端单模光纤进行切断处理，通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并向选择性打开的2个第二包层区气孔中填充金属材料，以形成两个电极，通过飞秒激光微加工技术再次对单模光纤薄片进行选择性开孔，并向选择性打开的2个第一包层区气孔中填充液体材料，在光子晶体光纤的侧面打两个孔，向孔中填充导电材料并接入外接电压装置，以形成光子晶体光纤电光开关。与现有技术相比，本发明实施例中的光子晶体光纤电光开关以光子晶体光纤为载体，可有效降低连接损耗，通过将电极内置在光子晶体光纤电光开关中，可以降低开关功率，通过内置电极与波导的耦合可以减少耦合附加损耗以及减少响应时间。In the embodiment of the present invention, the two ends of the photonic crystal fiber are respectively spliced with the single-mode optical fiber, and the single-mode optical fiber at one end of the fusion-welding point is cut at a distance of 10 μm, and the remaining singles are cut by the femtosecond laser micro-machining technology. The mold fiber sheet is selectively opened, and the metal materials are filled into the selectively opened two second cladding regions to form two electrodes, and the single mode fiber sheet is selectively selected by femtosecond laser micromachining technology. Opening a hole, and filling the liquid material of the two first cladding regions selectively opened, two holes on the side of the photonic crystal fiber, filling the hole with a conductive material and connecting an external voltage device to form a photonic crystal Fiber optic switch. Compared with the prior art, the photonic crystal fiber electro-optic switch in the embodiment of the invention uses a photonic crystal fiber as a carrier, which can effectively reduce the connection loss. By incorporating the electrode in the photonic crystal fiber electro-optical switch, the switching power can be reduced, and the built-in power can be reduced. The coupling of the electrodes to the waveguide reduces coupling loss and reduces response time.
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners.
需要说明的是，对于前述的各方法实施例，为了简便描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其它顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定都是本发明所必须的。It should be noted that, for the foregoing method embodiments, for the sake of brevity, they are all described as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其它实施例的相关描述。In the above embodiments, the descriptions of the various embodiments are all focused, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.
以上为对本发明所提供的一种光子晶体光纤电光开关及其制备方法的描述，对于本领域的技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本发明的限制。The above is a description of a photonic crystal fiber electro-optic switch and a preparation method thereof provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be changes in specific implementation modes and application ranges. In conclusion, the contents of the specification are not to be construed as limiting the invention.

Claims (10)

  1. 一种光子晶体光纤电光开关，其特征在于，所述光子晶体光纤电光开关包括：光子晶体光纤、两个电极、波导及外接电压装置；A photonic crystal fiber electro-optical switch, characterized in that the photonic crystal fiber electro-optical switch comprises: a photonic crystal fiber, two electrodes, a waveguide and an external voltage device;
    所述电极及所述波导位于所述光子晶体光纤的内部；The electrode and the waveguide are located inside the photonic crystal fiber;
    所述波导包括所述光子晶体光纤的纤芯及填充在所述光子晶体光纤的第一包层区气孔中的液体材料；The waveguide includes a core of the photonic crystal fiber and a liquid material filled in a first cladding region of the photonic crystal fiber;
    所述电极由填充在所述光子晶体光纤的第二包层区气孔中的金属材料所形成；The electrode is formed of a metal material filled in a pore of a second cladding region of the photonic crystal fiber;
    所述光子晶体光纤的的侧面设有两个孔，两个所述孔分别与两个所述电极相连，所述孔中填充导电材料，所述外接电压装置通过所述导电材料与所述电极连接成通路。The side surface of the photonic crystal fiber is provided with two holes, and the two holes are respectively connected to two electrodes, the holes are filled with a conductive material, and the external voltage device passes through the conductive material and the electrode Connected into a pathway.
  2. 根据权利要求1所述的光子晶体光纤电光开关，其特征在于，两个所述电极以所述光子晶体光纤的纤芯为中心呈对称分布，填充了液体材料的所述第一包层区气孔以所述光子晶体光纤的纤芯为中心呈对称分布，所述第一包层区气孔位于所述两个电极之间。The photonic crystal fiber electro-optical switch according to claim 1, wherein the two electrodes are symmetrically distributed around a core of the photonic crystal fiber, and the first cladding region of the liquid material is filled with pores. The core of the photonic crystal fiber is symmetrically distributed, and the first cladding region is located between the two electrodes.
  3. 根据权利要求1所述的光子晶体光纤电光开关，其特征在于，所述金属材料的材料为低电阻导电金属材料。The photonic crystal fiber electro-optical switch according to claim 1, wherein the material of the metal material is a low-resistance conductive metal material.
  4. 根据权利要求3所述的光子晶体光纤电光开关，其特征在于，所述金属材料为金或银。The photonic crystal fiber electro-optical switch according to claim 3, wherein the metal material is gold or silver.
  5. 根据权利要求1所述的光子晶体光纤电光开关，其特征在于，所述液体材料为具有电光效应的液体材料。The photonic crystal fiber electro-optical switch according to claim 1, wherein the liquid material is a liquid material having an electrooptic effect.
  6. 根据权利要求5所述的光子晶体光纤电光开关，其特征在于，所述液体材料为液晶材料。The photonic crystal fiber electro-optical switch according to claim 5, wherein the liquid material is a liquid crystal material.
  7. 根据权利要求1所述的光子晶体光纤电光开关，其特征在于，所述光子晶体光纤的端面分布的包层区气孔的整体形状为六边形。The photonic crystal fiber electro-optical switch according to claim 1, wherein the overall shape of the pores in the cladding region of the end face of the photonic crystal fiber is hexagonal.
  8. 根据权利要求1所述的光子晶体光纤电光开关，其特征在于，所述光子晶体光纤的纤芯为实芯纤芯。The photonic crystal fiber electro-optical switch according to claim 1, wherein the core of the photonic crystal fiber is a solid core.
  9. 一种光子晶体光纤电光开关的制备方法，其特征在于，所述方法用于制备如权利要求1至8任意一项所述的光子晶体光纤电光开关，所述方法包括：A method of fabricating a photonic crystal fiber electro-optic switch, characterized in that the method is used for preparing the photonic crystal fiber electro-optical switch according to any one of claims 1 to 8, the method comprising:
    将所述光子晶体光纤的两端分别与单模光纤熔接，且将距离熔接点10μm处的一端单模光纤进行切断处理；The two ends of the photonic crystal fiber are respectively spliced to the single-mode optical fiber, and the single-mode optical fiber at one end of the fusion bonding point is cut at a distance of 10 μm;
    通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并向选择性打开的2个第二包层区气孔中填充金属材料，以形成两个电极；Selectively opening the remaining single-mode fiber sheet at the cutting point by femtosecond laser micromachining technology, and filling the selectively opened two second cladding regions with a metal material to form two electrodes;
    通过所述飞秒激光微加工技术再次对所述单模光纤薄片进行选择性开孔，并向选择性打开的2个第一包层区气孔中填充液体材料；Performing the selective opening of the single-mode fiber sheet by the femtosecond laser micromachining technology, and filling the liquid materials of the two first cladding regions selectively opened;
    在所述光子晶体光纤的侧面打两个孔，向所述孔中填充导电材料并接入外接电压装置，以形成光子晶体光纤电光开关。Two holes are formed on the side of the photonic crystal fiber, and the hole is filled with a conductive material and connected to an external voltage device to form a photonic crystal fiber electro-optic switch.
  10. 根据权利要求9所述的方法，其特征在于，所述通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并向选择性打开的2个第二包层区气孔中填充金属材料，以形成两个电极的步骤包括：The method according to claim 9, wherein said single-mode fiber sheet remaining at the cutting portion is selectively opened by femtosecond laser micromachining technology, and selectively opened to two second cladding regions The steps of filling the pores with a metal material to form two electrodes include:
    通过飞秒激光微加工技术对切断处剩余的单模光纤薄片进行选择性开孔，并对选择性打开的2个第二包层区气孔进行高压处理；Selectively opening the remaining single-mode fiber sheets at the cutting point by femtosecond laser micromachining technology, and performing high-pressure treatment on the selectively opened two second cladding regions.
    对已进行高压处理的2个第二包层区气孔进行熔融拉锥处理；Performing a melt taper process on the pores of the two second cladding regions that have been subjected to high pressure treatment;
    向进行熔融拉锥处理后的2个第二包层区气孔中填充金属材料，以形成两个电极。The metal materials are filled in the pores of the two second cladding regions after the melt taper treatment to form two electrodes.
PCT/CN2017/092774 2017-07-13 2017-07-13 Photonic crystal fibre electro-optic switch and preparation method therefor WO2019010667A1 (en)

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