CN204807610U - Full fiber current sensor with light path integrates - Google Patents
Full fiber current sensor with light path integrates Download PDFInfo
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- CN204807610U CN204807610U CN201520460127.1U CN201520460127U CN204807610U CN 204807610 U CN204807610 U CN 204807610U CN 201520460127 U CN201520460127 U CN 201520460127U CN 204807610 U CN204807610 U CN 204807610U
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Abstract
The utility model relates to a full fiber current sensor with light path integrates, including integrated module of interconnect's photoelectricity light path and the integrated module of modulation light path, when the integrated module of photoelectricity light path with the integrated module of modulation light path during in different basement, integrated module of photoelectricity light path and two modules of the integrated module of modulation light path for encapsulating respectively, 0 butt fusion is pressed to the output tail optical fiber and the input tail optical fiber of the integrated module of modulation light path of the integrated module of photoelectricity light path, when the integrated module of photoelectricity light path with the integrated module of modulation light path during in the same basement, the subassembly that has or not the integrated module of modulation light path the that encapsulate shell in the third collimater output optical axis orientation setting of beam splitting Prism's terminal surface laminating is in order to form the space light path, the integrated module of photoelectricity light path wholly encapsulates together with the integrated module of modulation light path and forms. Full fiber current sensor possess the SNR height, small, the installation is simple and easy, low in production cost's advantage.
Description
Technical field
The utility model relates to a kind of current transformer technical field, particularly a kind of novel all-fiber current transformator with modularization, integrated light path.
Background technology
Current transformer plays a part accurate Quick Measurement electric current in electrical network, it is the nucleus equipment of intelligent grid, all-fiber current transformator based on Faraday magnetooptical effect can realize non-intervention type sensing measurement to high-tension current, is the main development direction of high-voltage electronic current transformer.The light path of the all-fiber current transformator (FOCT) of current domestic main flow employs and is separated from each other and all has the light source of individual packages shell, beam splitter, the polarizer, straight wave guide (or Y waveguide), the optical device compositions such as photodetector, typical straight wave guide design proposal as shown in Figure 1a, the light that light source 101 sends is through beam splitter 102, enter the polarizer 103 to be polarized, produce the linearly polarized light of high-polarization, after carrying out 45 ° of weldings with straight wave guide 104, split into the mutually perpendicular two row light waves in polarization direction, be subject to the closed loop phase modulation of straight wave guide 104, by optical fibre delay loop 105, transmission cable enters in sensing ring 106, reflect through catoptron 107 again produce Faraday magnetooptical effect in sensing ring 106 after, the other end being back to beam splitter 102 along original optical path finally carries out the detection of opto-electronic conversion settling signal at photodetector 108 place.Fig. 1 b is then the design proposal adopting Y waveguide, and Y waveguide 110 and polarization-maintaining beam splitter 111 substitute the polarizer 103 and straight wave guide 104, and ultimate principle communicates with straight wave guide scheme, does not describe in detail.In view of optical device producer is rare, and only can develop separately, production part of devices, required light path is set up with the optical device be separated in optical fiber current mutual inductor manufacturing plant, the mode of tail optical fiber welding is adopted between each optical device, as in Fig. 1 a and Fig. 1 b, black round dot represents the tail optical fiber fusion point 109 between each device, and the light path part before optical fibre delay loop 105 just at least needs 5,6 fusion points.
The performance that fusion point crosses multipair light path has many adverse influences, main manifestations be following some:
1, increase the polarization interference in light path, reduce the signal to noise ratio (S/N ratio) of light path.The light path design knowledge of and all-fiber current transformator theoretical according to fiber optics, each fusion point in light path is a very important polarization interference point, and the impact of the polarization interference point brought more than fiber kinks is much bigger.So, in its light path design with when producing, to the welding angle of each fusion point, clear and definite requirement can be proposed, but owing to also can not accurately control welding angle utterly with during optical fiber splicer welding optic fibre, cause welding angle and design load to there is deviation, thus introduce the polarization interference of certain amplitude.Obviously, fusion point is more, and the probability introducing polarization interference in light path is larger, and amplitude is also larger.Therefore high performance light path General Requirements fusion point is more few better.
2, process complexity and the reliability of light path assembling is added.Due to physical dimension requirement, all-fiber current transformator usually can not be too many to the installation site that light path is reserved, and this just requires that light path assembling is compact, make full use of space.But not only have 4 in a set of light path, 5 kind of optical device, 5,6 fusion points, also has the device tail optical fiber of more than the 10 long left and right of rice, partial optical device also needs to weld electrical wire, design, layout howsoever, the assembly technology of whole light path all can seem very complicated, loaded down with trivial details, simultaneously these operations all cannot can only by manually completing with machine, and its long-term reliability is also very alarming.
3, add the frequency of utilization of optical fiber splicer, add production cost, reduce production capacity.Obviously, fusion point is more, use the number of times of optical fiber splicer then more, and optical fiber splicer is all generally very expensive equipment, each optical fiber current mutual inductor manufacturing plant also can not purchase too much usually, uses optical fiber splicer continually, can reduce its life-span, extend activity time, reduce the production capacity of all-fiber current transformator.
Utility model content
The utility model is for problems such as in the light path design scheme of existing all-fiber current transformator, fusion point are too much, signal to noise ratio (S/N ratio) is low, complex process, poor reliability and production cost are high, a kind of novel all-fiber current transformator with integrated light path is provided, realize the modularization of all-fiber current transformator, integrated light path design, possess that signal to noise ratio (S/N ratio) is high, volume is little, it is simple and easy to install, production cost is low advantage.
The technical solution of the utility model is as follows:
There is an all-fiber current transformator for integrated light path, it is characterized in that, comprise interconnective photoelectricity light path integration module and modulation light path integration module,
Described photoelectricity light path integration module comprises and is arranged on a suprabasil light source chip, photoelectric detector chip, Amici prism and the collimating apparatus of all pasting at three end faces of Amici prism, described light source chip is without package casing and have light source electrical lead wire, described photoelectric detector chip is without package casing and have photodetector electrical lead wire, described Amici prism is arranged on the intersection that light source chip exports light and photoelectric detector chip input light, the described Amici prism end face corresponding with light source chip pastes first collimating apparatus, the Amici prism end face corresponding with photoelectric detector chip pastes second collimating apparatus, Amici prism and the opposing end face of light source chip paste the 3rd collimating apparatus, the output optics end face of light source chip, the input optics end face of photoelectric detector chip forms space optical path respectively and between its each self-corresponding collimating apparatus,
Described modulation light path integration module, is arranged in identical or different substrate with photoelectricity light path integration module, comprises without package casing and has the phase-modulator of waveguide electrical lead wire,
When photoelectricity light path integration module and modulation light path integration module are in different base, described photoelectricity light path integration module and modulation light path integration module are two modules encapsulated respectively, one section of optical fiber that 3rd collimating apparatus of fitting with the end face of Amici prism carries out aiming at, fix is the output tail optical fiber of photoelectricity light path integration module, described modulation light path integration module leaves input tail optical fiber and exports tail optical fiber, and the output tail optical fiber of described photoelectricity light path integration module and the input tail optical fiber of modulation light path integration module are by 0 ° of welding;
When photoelectricity light path integration module and modulation light path integration module are in same substrate, assembly without the modulation light path integration module of package casing is provided with to form space optical path in the 3rd the collimating apparatus output optical axis direction that the end face of Amici prism is fitted, described modulation light path integration module is provided with output tail optical fiber, and described photoelectricity light path integration module overall package together with modulation light path integration module forms.
When modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in different base time, described modulation light path integration module to be included in another substrate all without the polarizer chip of package casing with straight wave guide chip and the two optical axis point-blank and polarization principal axis is parallel, described straight wave guide chip has straight wave guide electrical lead wire, described polarizer chip has input tail optical fiber, first paragraph polarization maintaining optical fibre is provided with between described polarizer chip and straight wave guide chip, described first paragraph polarization maintaining optical fibre one end according to 45 ° with the output optical side of polarizer chip in the face of accurate, fixing, the described first paragraph polarization maintaining optical fibre other end is aimed at by 0 ° with the input optics end face of straight wave guide chip, fixing, aim at the output optics end face of described straight wave guide chip, fixing second segment polarization maintaining optical fibre is the output tail optical fiber of modulation light path integration module.
When modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in different base time, described modulation light path integration module comprise all without the polarizer chip of package casing and straight wave guide chip and the two optical axis point-blank and polarization principal axis 45 °, described straight wave guide chip has straight wave guide electrical lead wire, described polarizer chip has input tail optical fiber, the 4th collimating apparatus is provided with and the optical axis of described 4th collimating apparatus and the two optical axis coincidence between described polarizer chip and straight wave guide chip, described 4th collimating apparatus and polarizer chip, space optical path is formed between straight wave guide chip, aim at the output optics end face of described straight wave guide chip, one section of fixing polarization maintaining optical fibre is the output tail optical fiber of modulation light path integration module.
When modulate the phase-modulator in light path integration module and be Y waveguide chip and photoelectricity light path integration module and modulation light path integration module in different base time, described modulation light path integration module is included in Y waveguide chip and optical splitter all without package casing in another substrate, described Y waveguide chip has Y waveguide electrical lead wire and input tail optical fiber, two polarization maintaining optical fibres are provided with between described Y waveguide chip and optical splitter, described two polarization maintaining optical fibres are respectively according to 0 °, 90 ° export optical side in the face of accurate with two of Y waveguide chip, fixing two output tail optical fibers as Y waveguide chip, described optical splitter exports tail optical fiber by described two to carry out melting, wire drawing, coupling be made and reserve wherein tail optical fiber as the output tail optical fiber of modulation light path integration module.
When modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in same substrate time, described modulation light path integration module comprise all without the polarizer chip of package casing and straight wave guide chip and the two optical axis point-blank and polarization principal axis 45 °, described straight wave guide chip has straight wave guide electrical lead wire, described polarizer chip is arranged on the 3rd collimating apparatus output optical axis direction of the end face laminating of described Amici prism to form space optical path, the 4th collimating apparatus is provided with between described polarizer chip and straight wave guide chip, described 4th collimating apparatus and polarizer chip, space optical path is formed between straight wave guide chip, aim at the output optics end face of described straight wave guide chip, one section of fixing polarization maintaining optical fibre is the output tail optical fiber of modulation light path integration module.
Technique effect of the present utility model is as follows:
The all-fiber current transformator of integrated light path that what the utility model related to have, comprise interconnective photoelectricity light path integration module and modulation light path integration module, can encapsulate respectively or overall package in two integration modules, the inner each component design of integration module is exquisite, simple and compact for structure, Amici prism is arranged on the intersection that light source chip exports light and photoelectric detector chip input light, three end faces of Amici prism all paste collimating apparatus to focus on light and to be coupled, the substrate identical or different with photoelectricity light path integration module is arranged and modulates light path integration module, the optical device of inside modules makes successively, achieve photoelectricity light path and modulate the integrated of light path, modularization light path design, eliminate traditional F OCT light path be separated from each other and the polarization interference that too much causes of the fusing point all with each optical module of individual packages shell is large, signal to noise ratio (S/N ratio) is low, the variety of problems such as poor reliability and production cost height, the output optics end face of light source chip, the input optics end face of photoelectric detector chip forms space optical path between each self-corresponding collimating apparatus respectively and on Amici prism, space optical path replaces fusing point welding, eliminate traditional F OCT light path by be separated from each other and the polarization interference that too much causes of the fusing point all with each optical module of individual packages shell is large, signal to noise ratio (S/N ratio) is low, the variety of problems such as poor reliability and production cost height.The photoelectricity light path integration module of this all-fiber current transformator adopts the shaping light path design scheme of chipset, considerably reduce the quantity of fusion point, signal to noise ratio (S/N ratio) is promoted, integrated modular design makes installation simple and easy, the development of current FOCT light path can be solved, fusing point many difficult problem when producing, more easily be easily accepted by a user, be beneficial to applying of all-fiber current transformator, be specially adapted to require real-time monitor optical source power or the occasion not too high to small form factor requirements.
When two integration modules are in different base, FOCT light path is designed to two independently integrated modules, instead of the optical device be separated, when two integration modules are in same substrate, FOCT light path design becomes a whole integrated module, overall package is carried out to it, all-fiber current transformator of the present utility model redesigns the outline packages of module, photoelectricity light path integrated respectively and modulation light path externally only have output tail optical fiber and electrical lead wire, user is in use without the need to considering that complicated optical device is installed, the problems such as tail optical fiber welding, possesses signal to noise ratio (S/N ratio) high, volume is little, install simple and easy, easy to use, the advantage that production cost is low.
Accompanying drawing explanation
Fig. 1 a and Fig. 1 b is the structural representation of traditional all-fiber current transformator.
Fig. 2 is the structural representation that the utility model has the all-fiber current transformator of integrated light path.
Fig. 3 is the structural representation of photoelectricity light path integration module of the present utility model.
Fig. 4, Fig. 5 and Fig. 6 are the structural representation of three kinds of embodiments of modulation light path integration module of the present utility model.
Fig. 7 is the structural representation that the utility model has another embodiment of the all-fiber current transformator of integrated light path.
In figure, each label lists as follows:
101-light source; 102-optical splitter; The 103-polarizer; 104-straight wave guide; 105-optical fibre delay loop; 106-sensing ring; 107-catoptron; 108-photodetector; 109-fusion point; 110-Y waveguide; 111-polarization-maintaining beam splitter;
1-photoelectricity light path integration module; 2-modulates light path integration module; 3-FOCT light path;
201-light source chip; 2011-light source electrical lead wire; 202-photoelectric detector chip; 2021-photodetector electrical lead wire; 203-Amici prism; The output tail optical fiber of 204-photoelectricity light path; 205-modulates the input tail optical fiber of light path; 206-polarizer chip; 207-straight wave guide chip; 2071-straight wave guide electrical lead wire; 208-modulates the output tail optical fiber of light path; 209-Y waveguide chip; 2091-Y waveguide electrical lead wire; 210-optical splitter; 211-waveguide electrical lead wire; 2121-first collimating apparatus; 2122-second collimating apparatus; 2123-the 3rd collimating apparatus; 2124-the 4th collimating apparatus; 213-space optical path.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described.
The utility model relates to a kind of all-fiber current transformator with integrated light path, its structure as shown in Figure 2, comprise interconnective photoelectricity light path integration module and modulation light path integration module, photoelectricity light path integration module is provided with light source electrical lead wire 2011 and photodetector electrical lead wire 2021, modulation light path integration module is provided with waveguide electrical lead wire 211, input tail optical fiber and exports tail optical fiber 208, and the output tail optical fiber of photoelectricity light path integration module and the input tail optical fiber of modulation light path integration module are by 0 ° of welding.The device pin that the utility model adopts the mode of electrical lead wire to replace prior art to have encapsulated, is conducive to reduced volume and improves the dirigibility be electrically welded.
Photoelectricity light path integration module carries out the integrated of photoelectricity light path, photoelectricity light path after integrated achieves the light source in traditional F OCT light path, beam splitter, the function of the optical device such as photodetector, but design concept and production process have internal difference, the photoelectricity light path integration module of the application adopts the shaping process program of chipset, its structure as shown in Figure 3, photoelectricity light path integration module 1 comprises and to be arranged in a substrate and all without light source chip 201 and the photoelectric detector chip 202 of package casing, also comprise the collimating apparatus that Amici prism 203 is all pasted at three end faces of Amici prism 203, light source chip 201 has light source electrical lead wire 2011, photoelectric detector chip 202 has photodetector electrical lead wire 2021, Amici prism 203 is arranged on light source chip 201 and exports the intersection that light and photoelectric detector chip 202 input light, Amici prism 203 end face corresponding with light source chip 201 pastes first collimating apparatus 2121, Amici prism 203 end face corresponding with photoelectric detector chip 202 pastes second collimating apparatus 2122, Amici prism 203 end face opposing with light source chip 201 pastes the 3rd collimating apparatus 2123, the output optics end face of light source chip 201, the input optics end face of photoelectric detector chip 202 forms space optical path 213 respectively and between its each self-corresponding collimating apparatus.
The concrete manufacture craft of photoelectricity light path integration module is, in a substrate, first produce without package casing and there is the light source chip 201 of light source electrical lead wire 2011 and without package casing there is the photoelectric detector chip 202 of photodetector electrical lead wire 2021, this light source chip 201 can be SLD chip, and this photoelectric detector chip 202 can be PIN-FET chip, the Amici prism 203 of suitable dimension is arranged on light source chip 201 and exports the intersection that light and photoelectric detector chip 202 input light, and all collimating apparatus is pasted to focus on light and to be coupled on three end faces of Amici prism 203, to fit respectively on three end faces of Amici prism 203 as shown in Figure 3 first collimating apparatus 2121 (end face corresponding with light source chip 201), second collimating apparatus 2122 (end face corresponding with photoelectric detector chip 202) and the 3rd collimating apparatus 2123 (end face opposing with light source chip 201), the output optics end face of light source chip 201, the input optics end face of photoelectric detector chip 202 forms space optical path 213 respectively and between its each self-corresponding collimating apparatus, that is, the output optics end face of light source chip 201, the input optics end face of photoelectric detector chip 202 leaves clearance respectively and between its each self-corresponding collimating apparatus, light wave utilizes space optical path 213 to propagate.The program make use of the technology that integrated chip makes, and in photoelectricity light path 1 inside without the need to using Fiber connection, it also avoid optical fiber fusion welding point.Photoelectricity light path integration module in embodiment illustrated in fig. 3 and modulation light path integration module are in different base, now, photoelectricity light path integration module is undertaken aiming at, fixing by one section of optical fiber and the 3rd collimating apparatus 2123 making is last, so that as the output tail optical fiber 204 of photoelectricity light path.
Modulation light path integration module carries out modulating the integrated of light path, modulation light path after integrated achieves the function of the optical device such as rising of traditional F OCT light path is inclined, phase-modulation, but design concept and production process have internal difference, the modulation light path integration module of the application can adopt pigtail coupling type process program or adopt the shaping process program of chipset.Modulation light path integration module, can be arranged in identical or different substrate with photoelectricity light path integration module, comprise without package casing and there is the phase-modulator of waveguide electrical lead wire, when photoelectricity light path integration module and modulation light path integration module are in different base, photoelectricity light path integration module and modulation light path integration module are two modules encapsulated respectively, 3rd collimating apparatus of fitting with the end face of Amici prism is aimed at, one section of fixing optical fiber is the output tail optical fiber of photoelectricity light path integration module, modulation light path integration module leaves input tail optical fiber and exports tail optical fiber, the output tail optical fiber of described photoelectricity light path integration module and the input tail optical fiber of modulation light path integration module are by 0 ° of welding, when photoelectricity light path integration module and modulation light path integration module are in same substrate, assembly without the modulation light path integration module of package casing is provided with to form space optical path in the 3rd the collimating apparatus output optical axis direction that the end face of Amici prism is fitted, described modulation light path integration module is provided with output tail optical fiber, and described photoelectricity light path integration module overall package together with modulation light path integration module forms.
When modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in different base time, the structure of modulation light path integration module 2 as shown in Figure 4, to be included in another substrate all without the polarizer chip 206 of package casing with straight wave guide chip 207 and the two optical axis point-blank and polarization principal axis is parallel, straight wave guide chip 207 has straight wave guide electrical lead wire 2071, polarizer chip 206 has input tail optical fiber 205, first paragraph polarization maintaining optical fibre is provided with between polarizer chip 206 and straight wave guide chip 207, described first paragraph polarization maintaining optical fibre one end according to 45 ° with the output optical side of polarizer chip 206 in the face of accurate, fixing, the described first paragraph polarization maintaining optical fibre other end is aimed at by 0 ° with the input optics end face of straight wave guide chip 207, fixing, aim at the output optics end face of described straight wave guide chip 207, fixing second segment polarization maintaining optical fibre is the output tail optical fiber 208 of modulation light path integration module.
Modulation light path integration module embodiment illustrated in fig. 4 adopts pigtail coupling type process program, its concrete manufacture craft is, first produce all without polarizer chip 206 and the straight wave guide chip 207 of package casing in another substrate, and making the two optical axis point-blank and polarization principal axis is parallel, straight wave guide chip has straight wave guide electrical lead wire 2071; Carry out aiming at, fixing, as the input tail optical fiber 205 of modulation light path with one section of optical fiber and the input optics end face of polarizer chip 206 again; Then with first paragraph polarization maintaining optical fibre by its one end according to 45 ° instead of common 0 ° with the output optical side of polarizer chip 206 in the face of accurate, fixing, then this first paragraph polarization maintaining optical fibre other end is undertaken aiming at, fixing by 0 ° with the input optics end face of straight wave guide chip 207; Finally carry out aiming at, fixing, as the output tail optical fiber 208 of modulation light path with second segment polarization maintaining optical fibre and the output optics end face of straight wave guide chip 207 again.
When modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in different base time, the structure of modulation light path integration module 2 as shown in Figure 5, comprise all without the polarizer chip 206 of package casing and straight wave guide chip 207 and the two optical axis point-blank but polarization principal axis then needs at 45 °, straight wave guide chip 207 has straight wave guide electrical lead wire 2071, the output tail optical fiber of photoelectricity light path integration module is aimed at the input optics end face of polarizer chip 206, fixing, as the input tail optical fiber 205 of modulation light path, be provided with the 4th collimating apparatus 2124 between polarizer chip 206 and straight wave guide chip 207 and make optical axis and the two optical axis coincidence of the 4th collimating apparatus 2124, between the 4th collimating apparatus 2124 and polarizer chip 206, straight wave guide chip 207, forming space optical path 213, the one section of polarization maintaining optical fibre carrying out with the output optics end face of straight wave guide chip 207 aiming at, fixing is the output tail optical fiber 208 modulating light path integration module.
Modulation light path integration module embodiment illustrated in fig. 5 adopts the shaping process program of chipset, its concrete manufacture craft is, first produce all without polarizer chip 206 and the straight wave guide chip 207 of package casing in another substrate, and making the two optical axis point-blank and polarization principal axis then needs at 45 °, straight wave guide chip 207 has straight wave guide electrical lead wire 2071; Carry out aiming at, fixing, as the input tail optical fiber 205 of modulation light path with one section of optical fiber and the input optics end face of polarizer chip 206 again; Then the 4th collimating apparatus 2124 be installed between polarizer chip 206 and straight wave guide chip 207 and make optical axis and the two optical axis coincidence of the 4th collimating apparatus 2124, between the 4th collimating apparatus 2124 and polarizer chip 206, straight wave guide chip 207, forming space optical path 213; Finally export optics end face with one section of polarization maintaining optical fibre and straight wave guide chip 207 again to carry out aiming at, fixing, as the output tail optical fiber 208 of modulation light path.
When modulate the phase-modulator in light path integration module and be Y waveguide chip and photoelectricity light path integration module and modulation light path integration module in different base time, the structure of modulation light path integration module 2 as shown in Figure 6, be included in Y waveguide chip 209 and optical splitter 210 all without package casing in another substrate, Y waveguide chip 209 has Y waveguide electrical lead wire 2091 and input tail optical fiber 205, two polarization maintaining optical fibres are provided with between Y waveguide chip 209 and optical splitter 210, these two polarization maintaining optical fibres export optical side in the face of accurate according to two of 0 ° and 90 ° and Y waveguide chip 209 respectively, fixing two output tail optical fibers as Y waveguide chip 209, optical splitter 210 exports tail optical fiber by described two to carry out melting, wire drawing, coupling be made and reserve wherein tail optical fiber as the output tail optical fiber 208 of modulation light path integration module.
Modulation light path integration module embodiment illustrated in fig. 6 adopts pigtail coupling type process program, its concrete manufacture craft is, elder generation makes without package casing and has the Y waveguide chip 209 of Y waveguide electrical lead wire 2091 in another substrate, then carries out aiming at, fixing as the input tail optical fiber 205 modulating light path with one section of optical fiber and the input optics end face of Y waveguide chip 209; Then with the 3rd section and the 4th section of polarization maintaining optical fibre respectively by two of 0 ° and 90 ° and Y waveguide chip 209 exports standard faced by optical side, two of fixing as Y waveguide chip 209 export tail optical fiber; Finally described two are exported that tail optical fibers carry out melting, wire drawing, coupling are made into optical splitter 210, and reserve wherein tail optical fiber as the output tail optical fiber 208 of modulation light path.
Fig. 2-6 illustrated embodiment is the scheme that photoelectricity light path integration module and modulation light path integration module adopt when different base, now FOCT light path design is become two large integration modules, then two large integration modules (or perhaps to integrated photoelectricity light path and integrated modulation light path) are encapsulated respectively, then the output tail optical fiber of photoelectricity light path integration module and the input tail optical fiber of modulation light path integration module are pressed 0 ° of welding.
In addition to the implementation, photoelectricity light path integration module and modulation light path integration module also can design in same substrate, namely in same substrate, make the light path integration module of complete set, realize the repertoire of FOCT light path, inner without any optical fiber fusion welding point, can reduced volume to greatest extent, improve integrated level, whole FOCT light path integration module externally only has one to export tail optical fiber and electrical lead wire, user is regarded as an independently device in use, is directly mounted in FOCT product and gets final product work.
When modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in same substrate time, light path (the i.e. FOCT light path 3) structure with the all-fiber current transformator of integrated light path can with reference to shown in figure 7, modulation light path integration module now comprise all without the polarizer chip 206 of package casing and straight wave guide chip 207 and the two optical axis point-blank and polarization principal axis 45 °, straight wave guide chip 207 has straight wave guide electrical lead wire 2071, polarizer chip 206 is arranged at the output optical axis direction of the 3rd collimating apparatus 2123 of the end face laminating of Amici prism 203 to form space optical path 213, the 4th collimating apparatus 2124 is provided with and the optical axis of the 4th collimating apparatus 2124 and the two optical axis coincidence between polarizer chip 206 and straight wave guide chip 207, 4th collimating apparatus 2124 and polarizer chip 206, space optical path 213 is formed between straight wave guide chip 207, the one section of polarization maintaining optical fibre carrying out with the output optics end face of straight wave guide chip 207 aiming at, fixing is the output tail optical fiber 208 modulating light path integration module.
FOCT light path embodiment illustrated in fig. 7 is similar to be made in same substrate in order by the photoelectricity light path integration module 1 in Fig. 3 and Fig. 5, modulation light path integration module 2, its concrete manufacture craft is, first make all without light source chip 201, the photoelectric detector chip 202 of package casing, then carry out light splitting by three collimating apparatuss that Amici prism 203 and its three end faces are pasted; 3rd the collimating apparatus 2123 output optical axis direction correct position of fitting at the end face of Amici prism 203 again make all without the polarizer chip 206 of package casing and straight wave guide chip 207 to form space optical path 213, and the optical axis making polarizer chip 206 and straight wave guide chip 207 point-blank and polarization principal axis 45 °, straight wave guide chip 207 has straight wave guide electrical lead wire 2071; Then 4th collimating apparatus 2124 be installed between polarizer chip and straight wave guide chip for focus light, aligning make optical axis and the two optical axis coincidence of the 4th collimating apparatus 2124, between the 4th collimating apparatus 2124 and polarizer chip 206, straight wave guide chip 207, form space optical path 213; Finally export optics end face with one section of polarization maintaining optical fibre and straight wave guide chip 207 again to carry out aiming at, fixing, as the output tail optical fiber 208 of modulation light path.
Photoelectricity light path integration module and modulation light path integration module do not limit a kind of embodiment of Fig. 7 when same substrate, when phase-modulator in modulation light path integration module is straight wave guide chip, can also adopt similar to the photoelectricity light path integration module 1 in Fig. 3 and Fig. 4, modulation light path integration module 2 makes in order in same substrate, the output tail optical fiber 204 of the photoelectricity light path integration module 1 in this embodiment is aimed at the input optics end face of polarizer chip 206, fixing, as the input tail optical fiber of modulation light path integration module, and then make polarizer chip 206, save optical fiber fusing point.In addition, when two integration modules are in same substrate, phase-modulator in modulation light path integration module also can be chosen as Y waveguide chip, similar photoelectricity light path integration module 1 in Fig. 3 and Fig. 6, modulation light path integration module 2 to be made in order in same substrate, the output tail optical fiber 204 of the photoelectricity light path integration module 1 in this embodiment and the input optics end face of Y waveguide chip 209 carry out aiming at, fixing, as the input tail optical fiber of modulation light path, and then make Y waveguide chip 209, save optical fiber fusing point.
The utility model has the all-fiber current transformator of integrated light path, by modularization, Integration Design, shaping and the pigtail coupling type process program of chipset can avoid the generation of optical fiber fusion welding point (inside modules does not exist any fusion point), improve light path performance, can reduced volume to greatest extent, improve integrated level, FOCT light path can be used as a module or assembly is arranged on optical fiber current mutual inductor, is specially adapted to the occasion requiring miniaturization, high integration, production in enormous quantities.
It should be pointed out that the above embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore; although this instructions has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can modify to the invention or equivalent replacement; in a word, all do not depart from technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (5)
1. there is an all-fiber current transformator for integrated light path, it is characterized in that, comprise interconnective photoelectricity light path integration module and modulation light path integration module,
Described photoelectricity light path integration module comprises and is arranged on a suprabasil light source chip, photoelectric detector chip, Amici prism and the collimating apparatus of all pasting at three end faces of Amici prism, described light source chip is without package casing and have light source electrical lead wire, described photoelectric detector chip is without package casing and have photodetector electrical lead wire, described Amici prism is arranged on the intersection that light source chip exports light and photoelectric detector chip input light, the described Amici prism end face corresponding with light source chip pastes first collimating apparatus, the Amici prism end face corresponding with photoelectric detector chip pastes second collimating apparatus, Amici prism and the opposing end face of light source chip paste the 3rd collimating apparatus, the output optics end face of light source chip, the input optics end face of photoelectric detector chip forms space optical path respectively and between its each self-corresponding collimating apparatus,
Described modulation light path integration module, is arranged in identical or different substrate with photoelectricity light path integration module, comprises without package casing and has the phase-modulator of waveguide electrical lead wire,
When photoelectricity light path integration module and modulation light path integration module are in different base, described photoelectricity light path integration module and modulation light path integration module are two modules encapsulated respectively, one section of optical fiber that 3rd collimating apparatus of fitting with the end face of Amici prism carries out aiming at, fix is the output tail optical fiber of photoelectricity light path integration module, described modulation light path integration module leaves input tail optical fiber and exports tail optical fiber, and the output tail optical fiber of described photoelectricity light path integration module and the input tail optical fiber of modulation light path integration module are by 0 ° of welding;
When photoelectricity light path integration module and modulation light path integration module are in same substrate, assembly without the modulation light path integration module of package casing is provided with to form space optical path in the 3rd the collimating apparatus output optical axis direction that the end face of Amici prism is fitted, described modulation light path integration module is provided with output tail optical fiber, and described photoelectricity light path integration module overall package together with modulation light path integration module forms.
2. the all-fiber current transformator with integrated light path according to claim 1, it is characterized in that, when modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in different base time, described modulation light path integration module to be included in another substrate all without the polarizer chip of package casing with straight wave guide chip and the two optical axis point-blank and polarization principal axis is parallel, described straight wave guide chip has straight wave guide electrical lead wire, described polarizer chip has input tail optical fiber, first paragraph polarization maintaining optical fibre is provided with between described polarizer chip and straight wave guide chip, described first paragraph polarization maintaining optical fibre one end according to 45 ° with the output optical side of polarizer chip in the face of accurate, fixing, the described first paragraph polarization maintaining optical fibre other end is aimed at by 0 ° with the input optics end face of straight wave guide chip, fixing, aim at the output optics end face of described straight wave guide chip, fixing second segment polarization maintaining optical fibre is the output tail optical fiber of modulation light path integration module.
3. the all-fiber current transformator with integrated light path according to claim 1, it is characterized in that, when modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in different base time, described modulation light path integration module comprise all without the polarizer chip of package casing and straight wave guide chip and the two optical axis point-blank and polarization principal axis 45 °, described straight wave guide chip has straight wave guide electrical lead wire, described polarizer chip has input tail optical fiber, the 4th collimating apparatus is provided with and the optical axis of described 4th collimating apparatus and the two optical axis coincidence between described polarizer chip and straight wave guide chip, described 4th collimating apparatus and polarizer chip, space optical path is formed between straight wave guide chip, aim at the output optics end face of described straight wave guide chip, one section of fixing polarization maintaining optical fibre is the output tail optical fiber of modulation light path integration module.
4. the all-fiber current transformator with integrated light path according to claim 1, it is characterized in that, when modulate the phase-modulator in light path integration module and be Y waveguide chip and photoelectricity light path integration module and modulation light path integration module in different base time, described modulation light path integration module is included in Y waveguide chip and optical splitter all without package casing in another substrate, described Y waveguide chip has Y waveguide electrical lead wire and input tail optical fiber, two polarization maintaining optical fibres are provided with between described Y waveguide chip and optical splitter, described two polarization maintaining optical fibres are respectively according to 0 °, 90 ° export optical side in the face of accurate with two of Y waveguide chip, fixing two output tail optical fibers as Y waveguide chip, described optical splitter exports tail optical fiber by described two to carry out melting, wire drawing, coupling be made and reserve wherein tail optical fiber as the output tail optical fiber of modulation light path integration module.
5. the all-fiber current transformator with integrated light path according to claim 1, it is characterized in that, when modulate the phase-modulator in light path integration module and be straight wave guide chip and photoelectricity light path integration module and modulation light path integration module in same substrate time, described modulation light path integration module comprise all without the polarizer chip of package casing and straight wave guide chip and the two optical axis point-blank and polarization principal axis 45 °, described straight wave guide chip has straight wave guide electrical lead wire, described polarizer chip is arranged on the 3rd collimating apparatus output optical axis direction of the end face laminating of described Amici prism to form space optical path, the 4th collimating apparatus is provided with between described polarizer chip and straight wave guide chip, described 4th collimating apparatus and polarizer chip, space optical path is formed between straight wave guide chip, aim at the output optics end face of described straight wave guide chip, one section of fixing polarization maintaining optical fibre is the output tail optical fiber of modulation light path integration module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520460127.1U CN204807610U (en) | 2015-06-30 | 2015-06-30 | Full fiber current sensor with light path integrates |
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| CN201520460127.1U CN204807610U (en) | 2015-06-30 | 2015-06-30 | Full fiber current sensor with light path integrates |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044424A (en) * | 2015-06-30 | 2015-11-11 | 易能乾元（北京）电力科技有限公司 | All-fiber current transformer with integrated light path and manufacturing process thereof |
| CN112082736A (en) * | 2020-09-04 | 2020-12-15 | 哈尔滨工程大学 | Polarization maintaining optical fiber ring polarization crosstalk bidirectional measuring device and method based on multifunctional optical switch |
-
2015
- 2015-06-30 CN CN201520460127.1U patent/CN204807610U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044424A (en) * | 2015-06-30 | 2015-11-11 | 易能乾元（北京）电力科技有限公司 | All-fiber current transformer with integrated light path and manufacturing process thereof |
| CN105044424B (en) * | 2015-06-30 | 2018-01-23 | 马鞍山万兆科技有限公司 | A kind of all-fiber current transformator and its manufacture craft with integrated light path |
| CN112082736A (en) * | 2020-09-04 | 2020-12-15 | 哈尔滨工程大学 | Polarization maintaining optical fiber ring polarization crosstalk bidirectional measuring device and method based on multifunctional optical switch |
| CN112082736B (en) * | 2020-09-04 | 2022-07-15 | 哈尔滨工程大学 | Polarization maintaining optical fiber ring polarization crosstalk bidirectional measuring device and method based on multifunctional optical switch |
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