CN107843954B - Embedded optical fiber lantern based on plastic photonic crystal optical fiber perform - Google Patents
Embedded optical fiber lantern based on plastic photonic crystal optical fiber perform Download PDFInfo
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- CN107843954B CN107843954B CN201711220688.4A CN201711220688A CN107843954B CN 107843954 B CN107843954 B CN 107843954B CN 201711220688 A CN201711220688 A CN 201711220688A CN 107843954 B CN107843954 B CN 107843954B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02319—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by core or core-cladding interface features
- G02B6/02323—Core having lower refractive index than cladding, e.g. photonic band gap guiding
- G02B6/02328—Hollow or gas filled core
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02366—Single ring of structures, e.g. "air clad"
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- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention belongs to the field of astronomical photonics, and particularly relates to an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform. The invention removes the outer cladding of a plurality of plastic optical fibers, inserts the plastic optical fibers into a plurality of holes near the center of a plastic photonic crystal optical fiber prefabricated rod with periodic air holes, the arrangement mode of the plastic scintillating optical fibers is not fixed, so the optical fibers can be embedded into different air holes according to actual requirements to manufacture fiber core structures with different shapes, which is more beneficial to the transmission of light beams, and then the prefabricated rod is tapered, thereby the optical fiber lantern is manufactured into an optical fiber connector with one end being a plurality of optical fibers and the other end being an optical fiber convergence end, wherein the plurality of holes inserted into the plastic optical fibers become fiber cores of the optical fiber convergence end, the surrounding holes not inserted into the plastic optical fibers become air cladding, and finally, the transmission of light is realized. The invention has simple manufacture, flexible structure and reduced loss of optical signals, and can be used in a water Cerenkov detector.
Description
Technical Field
The invention belongs to the field of astronomical photonics, and particularly relates to an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform.
Background
Because the effective area of the space detector is small and the flux of the high-energy cosmic ray particles is small, scientists usually adopt a ground mode to indirectly observe the high-energy cosmic ray. Common ground cosmic ray detection techniques include atmospheric cerenkov light telescopes, atmospheric fluorescence telescopes, ground particle detector arrays, water cerenkov detectors, and the like. The water Cerenkov detector combines the advantages of a low energy threshold value of an atmospheric Cerenkov telescope, a large visual field and a high working period of a ground particle detector array and the like, and is widely applied to the field of forward physics research such as gamma-ray astronomy, cosmic ray detection, mesoparticle detection and the like. For high-energy rays, because the energy of the particles is more, the high-energy particles not only have long stroke after entering the detector, but also have secondary clustering, so that a larger number of new particles are generated, the number of the new particles is in direct proportion to the energy of the incident particles, and at the moment, the number of the incident particles and the total energy of the incident particles can be measured by measuring the Cerenkov light generated in the detector, so that the aim of monitoring the number and the energy of the high-energy cosmic ray particles is fulfilled. Among the sensitive detectors used for high-energy ray imaging, the more commonly used detectors are scintillator detectors or semiconductor detectors.
The scintillator detector mainly comprises a scintillator, an optical waveguide or an optical fiber and a photoelectric converter, wherein the optical waveguide or the optical fiber is mainly used for collecting photons generated by the scintillator, and the photoelectric converter is used for converting the photons into electrons and finally outputting an electric signal to a computer.
The plastic flashing optical fiber is an element with the functions of ray detection and optical signal transmission, and the detector made of it has the advantages of high space resolution, good time resolution, radiation resistance, etc., and because the main component is plastic, it can be bent into different shapes and extended to any position in space, and when it is irradiated by high-energy radiation, it can give out the fluorescent signal of visible light or infrared light, and can be extensively used in high-energy particle detection. However, plastic scintillating fibers have severe energy attenuation when transmitting optical signals, and if the optical fibers are used for long-distance transmission in a water Cerenkov detector, the collected optical signals are weak. There is therefore a need for a device that collects the light signals in plastic scintillating fibers, and then transmits the collected light signals through the device to a white optical fiber with little energy attenuation, and then transmits the light signals from the white optical fiber to a remote photodetector.
Wangweibiao and Xumei disclose a polymer photonic crystal fiber in the invention patent of a polymer photonic crystal fiber preparation method and its optical fiber (publication No. CN1542472A), which selects high refractive index material to make polymer hollow round rod, stretches the made polymer hollow round rod into capillary, piles the capillary into regular and uniform arranged hexagonal body, prepares hollow or solid structure polymer photonic crystal fiber prefabricated rod, further draws into photonic crystal fiber.
The air holes of the photonic crystal fiber are high in arrangement flexibility, and the light transmission characteristics of the photonic crystal fiber can be changed by designing structures of the photonic crystal fibers with different cladding air holes. Based on the special optical property of photonic crystals, the invention provides an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform. The plastic scintillating fibers without the outer cladding are inserted into a plurality of holes near the center of the plastic photonic crystal fiber perform, the integral equivalent refractive index of the fiber core part of the plastic scintillating fibers after the cladding is removed is larger than the equivalent refractive index of a plurality of air holes around the plastic scintillating fibers, the structure can limit the transmission of light beams and concentrate the energy at the center of the plastic photonic crystal fiber perform. And then the optical fiber tapering is carried out on the plastic photonic crystal optical fiber preform, the optical signal in the plastic scintillation optical fiber is concentrated to the fiber core part of the optical fiber converging end of the tapering part of the plastic photonic crystal optical fiber preform and is connected with a white light fiber with very small energy attenuation, and the white light fiber transmits the optical signal to a remote photoelectric detector.
Disclosure of Invention
The invention aims to provide an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform, which utilizes the special light transmission property of photonic crystal optics, can converge an optical signal transmitted in a plastic scintillation optical fiber 1 with serious energy attenuation to a tapered part, is connected with a white optical fiber 5 with very small energy attenuation, and then transmits the optical signal to a remote photoelectric detector 6.
The purpose of the invention is realized as follows:
an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform is characterized in that the parts of a plurality of plastic scintillation optical fibers 1 without a cladding are embedded into a plurality of holes close to the center of a plastic photonic crystal optical fiber preform 2 with periodic air holes, the parts of the plurality of plastic scintillation optical fibers 1 without the cladding extend out of the plurality of holes close to the center of one end of the plastic photonic crystal optical fiber preform 2 to receive and transmit optical signals, the diameter of the tapered part is reduced after the other end of the plastic photonic crystal optical fiber preform 2 is tapered by an optical fiber tapering device 8, the plastic scintillation optical fiber preform 2 after the tapered part is connected with a white optical fiber 5, the part of the plastic scintillation optical fiber 1 at the optical fiber converging end of the plastic photonic crystal optical fiber preform 2 is an equivalent optical core part of the optical fiber converging end, and the diameter of the equivalent optical core 3 at the optical fiber converging end is equal to the diameter of the white optical fiber 5, the air hole 2-1 part of the optical fiber convergence end is an equivalent cladding part of the optical fiber convergence end, the other end of the white optical fiber 5 is connected with the photoelectric detector 6, and the other end of the photoelectric detector 6 is connected with the information processing system 7.
The plastic photonic crystal fiber preform 2 comprises a plurality of air holes 2-1 and an outer cladding layer 2-2.
The length of the plastic scintillation fiber 1 without the cladding layer is equal to the length of the plastic photonic crystal fiber preform 2.
The integral equivalent refractive index of the fiber core part of the plastic scintillating fiber 1 after the cladding is removed is larger than the equivalent refractive index of a plurality of air holes 2-1 around the plastic scintillating fiber 1.
The optical fiber arrangement mode of the plastic scintillation optical fiber 1 without the cladding layer positioned in the plastic photonic crystal optical fiber perform 2 is not fixed, and the arrangement mode of the air holes of the plastic photonic crystal optical fiber perform 2 is not fixed.
After the optical fiber tapering device 8 tapers a part of one end of the plastic photonic crystal optical fiber preform 2 with the periodic air holes, which is embedded with a plurality of plastic scintillating optical fibers 1 without cladding, the shape of the optical fiber taper in the tapering region is not fixed, including a slow taper shape and a steep taper shape.
The white optical fiber 5 is a single mode optical fiber.
The optical fiber parameters of the plastic scintillation optical fibers 1 embedded into the plastic photonic crystal optical fiber preform 2 with the periodic air holes are the same.
The equivalent cladding 4 diameter of the fiber convergence end is equal to the cladding diameter of the white fiber 5.
The invention has the beneficial effects that: the invention is simple to realize, the structure is flexible, solve the problem that the signal loss amount is very large and the transmission distance is short when the traditional plastic optical fiber 1 transmits the optical signal, limit and transmission to the light beam can be realized by embedding the plastic scintillating optical fiber 1 into the plastic photonic crystal optical fiber prefabricated rod 2 and only embedding the optical fiber into the hole of the plastic photonic crystal optical fiber prefabricated rod 2 close to the center, optical fiber lanterns with different fiber cores can be manufactured according to the actual requirement, finally, a plurality of plastic scintillating optical fibers 1 are integrated into one optical fiber to be connected with the white optical fiber 5 with negligible energy attenuation, and finally, long-distance transmission of the optical signal of the plastic scintillating optical fiber 1 is realized.
Drawings
FIG. 1 is a perspective view of an embedded fiber lantern based on a plastic photonic crystal fiber preform after 7 plastic scintillating fibers with cladding removed are embedded;
FIG. 2 is a schematic cross-sectional structure of a solid photonic crystal fiber preform after 7 plastic scintillating fibers with cladding removed are embedded;
FIG. 3 is a schematic cross-sectional structure diagram of a hollow photonic crystal fiber preform after 6 plastic scintillating fibers with cladding removed are embedded;
FIG. 4 is a schematic cross-sectional structure of a solid photonic crystal fiber preform after 4 plastic scintillating fibers with cladding removed are embedded;
FIG. 5 is a schematic cross-sectional structure of a hollow photonic crystal fiber preform after 3 plastic scintillating fibers with cladding removed are embedded;
FIG. 6 is a schematic cross-sectional view of the fiber converging end of 7 embedded plastic scintillating fibers with the cladding removed, at the tapering portion of a preform rod of a plastic photonic crystal fiber;
FIG. 7 is a schematic view of the overall structure of the apparatus;
the specific implementation mode is as follows:
the invention is further described with reference to the accompanying figures 1 to 7:
example 1
The invention relates to an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform, which comprises a plastic scintillation optical fiber 1, a plastic photonic crystal optical fiber preform 2, a fiber core 3 of an optical fiber convergence end of the tapering part of the plastic photonic crystal optical fiber preform 2, a cladding 4 of the optical fiber convergence end of the tapering part of the plastic photonic crystal optical fiber preform 2, a white light fiber 5, a photoelectric detector 6, an information processing system 7 and an optical fiber tapering device 8.
The parts of the plastic scintillation fibers 1 without the claddings are embedded into a plurality of holes close to the center of a plastic photonic crystal fiber preform 2 with periodic air holes, the parts of the plastic scintillation fibers 1 without the claddings extend out from a plurality of holes close to the center of one end of the plastic photonic crystal fiber preform 2 and receive and transmit optical signals, the diameter of the tapered part is reduced after the other end of the plastic photonic crystal fiber preform 2 is tapered by an optical fiber tapering device 8, the plastic photonic crystal fiber preform 2 after the tapered part is connected with a white light fiber 5, the part of the plastic scintillation fibers 1 at the fiber converging end of the tapered part of the plastic photonic crystal fiber preform 2 is the equivalent fiber core part of the fiber converging end, the equivalent fiber core 3 diameter of the fiber converging end is equal to the fiber core diameter of the white light fiber 5, and the part of the air holes 2-1 at the fiber converging end is the equivalent cladding part of the fiber converging end, the diameter of an equivalent cladding 4 at the fiber convergence end is equal to that of a cladding of a white fiber 5, the other end of the white fiber 5 is connected with a photoelectric detector 6, and the other end of the photoelectric detector 6 is connected with an information processing system 7.
The plastic photonic crystal optical fiber preform 2 comprises a plurality of air holes 2-1 and an outer cladding layer 2-2, and the outer cladding layer 2-2 has the function of reducing the loss of optical signals.
The overall equivalent refractive index of the fiber core part of the plastic scintillating fiber 1 after the cladding is removed is larger than the equivalent refractive index of a plurality of air holes 2-1 around the plastic scintillating fiber 1.
The length of the plastic scintillation fiber 1 with the cladding removed is equal to that of the plastic photonic crystal fiber preform 2.
The arrangement mode of the optical fibers of the plastic scintillation optical fiber 1 without the cladding layer in the plastic photonic crystal optical fiber perform 2 is not fixed, the arrangement mode of the air holes 2-1 in the plastic photonic crystal optical fiber perform 2 is not fixed, and when the arrangement mode of the air holes 2-1 and the plastic scintillation optical fiber 1 is changed, the transmission mode of light is also changed.
The optical fiber tapering device 8 tapers a part of one end of a plastic photonic crystal optical fiber preform 2 embedded with a plurality of plastic scintillation optical fibers 1 and provided with periodic air holes, the shape of the optical fiber taper in the tapering region is not fixed and comprises a slow taper shape and a steep taper shape, the main purpose of tapering is to transmit light in the plastic photonic crystal optical fiber preform 2 embedded with a plurality of plastic scintillation optical fibers 1 and provided with periodic air holes to a white optical fiber 5 as much as possible, so that the equivalent fiber core diameters of the white optical fiber and the white optical fiber are required to be the same, the tapering method is adopted in the invention, and light energy after tapering can be more converged at the fiber core 3 at the fiber converging end of the tapering part of the plastic photonic crystal optical fiber preform 2.
The optical fiber parameters of a plurality of plastic scintillation optical fibers 1 embedded in a plastic photonic crystal optical fiber preform 2 with periodic air holes are the same.
The concrete manufacturing steps of an embedded optical fiber lantern based on a plastic photonic crystal optical fiber perform are as follows:
And 2, extending the parts of the plastic scintillation fibers 1 without the claddings from a plurality of holes near the center at one end of the plastic photonic crystal fiber preform 2 to receive and transmit optical signals, and then inserting the plastic scintillation fibers 1 without the claddings into the holes near the center of the plastic photonic crystal fiber preform 2 with periodic air holes to prepare tapering.
And 4, removing the cladding of the plastic scintillation fiber 1, completely embedding the plastic scintillation fiber 1 into a plurality of air holes 2-1 near the center of a plastic photonic crystal fiber preform 2 with periodic air holes, receiving optical signals by the plastic scintillation fiber 1 without removing the cladding, connecting the tapered plastic photonic crystal fiber preform 2 with a white optical fiber 5, and transmitting the optical signals to the white optical fiber 5.
And 5, connecting the white optical fiber 5 with the photoelectric detector 6, collecting data by the photoelectric detector 6, connecting the photoelectric detector 6 with the information processing system 7, and processing and analyzing the data collected by the photoelectric detector 6 by the information processing system 7.
Example 2
The invention discloses an embedded optical fiber lantern based on a plastic photonic crystal optical fiber preform, which can be applied to the field of astronomical photonics. The embedded optical fiber lantern of the plastic photonic crystal optical fiber perform is characterized in that a plurality of plastic scintillation optical fibers 1 are inserted into a hole near the center of a plastic photonic crystal optical fiber perform 2 with a periodic hole after an outer cladding layer is removed, and then the plastic scintillation optical fibers are tapered by an optical fiber tapering device 8, so that the optical fiber lantern is manufactured into an optical fiber connector with one end provided with a plurality of optical fibers and the other end provided with an optical fiber converging end, and the embedded optical fiber lantern can be used for water Cerenkov detection. Wherein, the plastic photonic crystal fiber preform 2 after tapering is connected with the white light fiber 5 to realize the transmission of light. The invention has simple manufacture and flexible structure, the air holes 2-1 of the prefabricated rod are various in arrangement mode, and the plastic scintillating fibers 1 embedded into the plastic photonic crystal fiber prefabricated rod 2 are also various in arrangement mode, so that the fibers can be embedded into different air holes 2-1 according to actual requirements to manufacture fiber core structures with different shapes, thereby being beneficial to the transmission of light beams.
The embedded optical fiber lantern based on the plastic photonic crystal optical fiber perform is simple to realize and flexible in structure, can transmit optical signals transmitted in plastic scintillation optical fibers 1 with serious energy attenuation to white optical fibers 5 with very small energy attenuation, and then transmit the optical signals to a remote photoelectric detector 6.
The invention relates to an embedded optical fiber lantern of a plastic photonic crystal optical fiber perform, wherein after an outer cladding layer of a plurality of plastic scintillation optical fibers 1 is removed, the plastic scintillation optical fibers 1 with the removed cladding layers are embedded into the plastic photonic crystal optical fiber perform 2 with periodic air holes, because the perform per se contains a regular arrangement sequence of the air holes 2-1, the parts of the plastic scintillation optical fibers 1 with the removed cladding layers are embedded into a hole close to the center, the integral equivalent refractive index of the core part of the plastic scintillation optical fibers 1 after the removal of the cladding layers is larger than the equivalent refractive index of the air holes 2-1 around the plastic scintillation optical fibers 1, light can be totally reflected when being transmitted inside, and the structure can limit the transmission of light beams and concentrate energy on the equivalent core part of the plastic photonic crystal optical fiber perform 2. And then, tapering the plastic photonic crystal fiber preform 2 with periodic air holes, which is embedded with a plurality of plastic scintillating fibers 1 without cladding, by using an optical fiber tapering device 8, so that the plastic photonic crystal fiber preform 2 is manufactured into an optical fiber connector with one end being a plurality of optical fibers and the other end being an optical fiber convergence end structure. The part of the plastic scintillating fiber 1 without the cladding becomes an equivalent fiber core 3 of the fiber convergence end, and the surrounding air holes 2-1 which are not inserted into the plastic scintillating fiber 1 become an equivalent cladding 4 of the fiber convergence end, so that the transmission of light is realized. The convergence ends of a plurality of optical fiber ends of the manufactured embedded optical fiber lantern based on the plastic photonic crystal optical fiber perform are connected with the white optical fiber 5 with very small energy attenuation, so that the functions of collecting optical signals and transmitting the optical signals to the remote photoelectric detector 6 are realized. In addition, the embedded optical fiber lantern based on the plastic photonic crystal optical fiber preform 2 can be suitable for underwater application in a water Cerenkov detector.
The invention is simple to realize and flexible in structure, can realize the limitation and transmission of light beams by embedding the plastic scintillation fibers 1 into the plastic photonic crystal fiber perform 2 only by embedding the plastic scintillation fibers 1 without cladding into the holes close to the center, can also manufacture fiber lanterns with fiber cores in different shapes according to actual requirements, finally realizes the collection of a plurality of plastic scintillation fibers 1 into one fiber, and can collect optical signals underwater.
And 2, extending the parts of the plastic scintillation fibers 1 without the claddings from a plurality of holes near the center at one end of the plastic photonic crystal fiber preform 2 to receive and transmit optical signals, and then inserting the plastic scintillation fibers 1 without the claddings into the holes near the center of the plastic photonic crystal fiber preform 2 with periodic air holes to prepare tapering.
And 4, removing the cladding of the plastic scintillation fiber 1, completely embedding the plastic scintillation fiber 1 into a plurality of air holes 2-1 near the center of a plastic photonic crystal fiber preform 2 with periodic air holes, receiving optical signals by the plastic scintillation fiber 1 without removing the cladding, connecting the tapered plastic photonic crystal fiber preform 2 with a white optical fiber 5, and transmitting the optical signals to the white optical fiber 5.
And 5, connecting the white optical fiber 5 with the photoelectric detector 6, collecting data by the photoelectric detector 6, connecting the photoelectric detector 6 with the information processing system 7, and processing and analyzing the data collected by the photoelectric detector 6 by the information processing system 7.
It should be noted that other structures not described in the present invention are known in the art, and those skilled in the art can find relevant documents according to the names or functions of the present invention, so that no further description is provided. The technical means disclosed in the present embodiment is not limited to the technical means disclosed in the above embodiments, and includes any combination of the above technical features.
Claims (1)
1. The utility model provides an embedded fiber lantern based on prefabricated stick of plastics photonic crystal fiber which characterized in that: the parts of a plurality of plastic scintillation fibers (1) without the claddings are embedded into a plurality of holes close to the center of a plastic photonic crystal fiber preform (2) with periodic air holes, the parts of the plurality of plastic scintillation fibers (1) without the claddings extend out from a plurality of holes close to the center of one end of the plastic photonic crystal fiber preform (2) and receive and transmit optical signals, the diameter of the tapered part is reduced after the other end of the plastic photonic crystal fiber preform (2) is tapered by an optical fiber tapering device (8), the plastic photonic crystal fiber preform (2) after the tapering is connected with a white light fiber (5), the part of the plastic scintillation fibers (1) at the fiber converging end of the tapered part of the plastic photonic crystal fiber preform (2) is the equivalent fiber core part of the fiber converging end, the equivalent fiber core (3) diameter of the fiber converging end is equal to the fiber core diameter of the white light fiber (5), the air hole (2-1) part of the optical fiber convergence end is an equivalent cladding part of the optical fiber convergence end, the other end of the white optical fiber (5) is connected with the photoelectric detector (6), and the other end of the photoelectric detector (6) is connected with the information processing system (7);
the plastic photonic crystal optical fiber preform (2) comprises a plurality of air holes (2-1) and an outer cladding (2-2);
the length of the plastic scintillation fiber (1) without the cladding is equal to the length of the plastic photonic crystal fiber preform (2);
the integral equivalent refractive index of the fiber core part of the plastic scintillating fiber (1) after the cladding is removed is larger than the equivalent refractive index of a plurality of air holes (2-1) around the plastic scintillating fiber (1);
the arrangement mode of the optical fibers of the plastic scintillation optical fiber (1) without the cladding layer in the plastic photonic crystal optical fiber perform (2) is not fixed, and the arrangement mode of the air holes of the plastic photonic crystal optical fiber perform (2) is not fixed;
after the optical fiber tapering device (8) tapers a part of one end of a plastic photonic crystal optical fiber perform rod (2) which is embedded with a plurality of plastic scintillation optical fibers (1) without cladding and provided with periodic air holes, the shape of an optical fiber taper in a tapering area is not fixed and comprises a slow taper shape and a steep taper shape;
the white optical fiber (5) is a single-mode optical fiber;
the optical fiber parameters of the plastic scintillation optical fibers (1) embedded into the plastic photonic crystal optical fiber preform (2) with the periodic air holes are the same;
the diameter of an equivalent cladding (4) of the fiber convergence end is equal to that of a cladding of a white fiber (5);
step 1, selecting a certain number of plastic scintillating fibers with the same parameters, and stripping the outer cladding of the plastic scintillating fibers;
step 2, extending the parts of the plastic scintillation fibers without the claddings from a plurality of holes near the center at one end of the plastic photonic crystal fiber perform to receive and transmit optical signals, inserting the plastic scintillation fibers without the claddings into the holes near the center of the plastic photonic crystal fiber perform with periodic air holes, and preparing tapering;
step 3, tapering a plastic photonic crystal fiber preform with periodic air holes embedded in the plastic scintillation fiber by using an optical fiber tapering device, wherein the equivalent fiber core diameter of the fiber converging end of the tapered part of the plastic photonic crystal fiber preform is equal to the fiber core diameter of the white fiber, and the equivalent cladding diameter of the fiber converging end of the tapered part of the plastic photonic crystal fiber preform is equal to the cladding diameter of the white fiber 5;
step 4, the part of the plastic scintillation fiber with the removed cladding is completely embedded into an air hole close to the center of a plastic photonic crystal fiber preformed rod with a periodic air hole, the part of the plastic scintillation fiber without the removed cladding receives an optical signal, the plastic photonic crystal fiber preformed rod after tapering is connected with a white optical fiber, and the optical signal is transmitted to the white optical fiber;
and 5, connecting the white optical fiber with a photoelectric detector, collecting data by the photoelectric detector, connecting the photoelectric detector with an information processing system, and processing and analyzing the data collected by the photoelectric detector by the information processing system.
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| CN110208907B (en) * | 2019-04-30 | 2020-08-04 | 北京邮电大学 | Method and device for manufacturing orbital angular momentum photon lantern |
| CN110018544A (en) * | 2019-05-14 | 2019-07-16 | 南开大学 | A kind of efficient automatic coupling device of spatial light based on photon lantern and its implementation |
| ES2822223A1 (en) * | 2019-10-29 | 2021-04-29 | Consejo Superior Investigacion | Combined optical telescope with scalable aperture (Machine-translation by Google Translate, not legally binding) |
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| EP3029860A1 (en) * | 2014-12-05 | 2016-06-08 | Alcatel Lucent | Optical amplification system |
| CN104820233B (en) * | 2015-05-15 | 2019-03-01 | 中国科学院高能物理研究所 | The neutron detector of scintillator arrays structure and application the scintillator arrays structure |
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