Three-color plastic scintillation optical fiber array and preparation method and application thereof

Abstract

The invention discloses a three-color plastic scintillation optical fiber array and a preparation method and application thereof, and belongs to the technical field of plastic scintillation optical fiber arrays. The three-color plastic scintillation optical fiber array is composed of plastic scintillation optical fibers emitting red light, green light and blue light, and the three-color plastic scintillation optical fibers are arranged according to the color rule of a set pattern to form the three-color plastic scintillation optical fiber array. The optical fiber array is simple in structure, low in manufacturing cost and capable of being popularized and applied on a large scale. The three-color plastic scintillation optical fiber array has the characteristics of miniaturization, long-distance transmission and electromagnetic interference resistance, and is very suitable for radiation detection in a complex environment. Meanwhile, the optical fiber array covers red, green and blue wavelength bands, can be matched with more photoelectric detectors with different wavelength sensitivities, can realize high-resolution and long-distance imaging when being applied to X-ray imaging, can form different patterns under X-ray irradiation, and can be widely applied to the fields of radiation detection, industrial detection, medical imaging and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic scintillating optical fiber arrays, and in particular to a three-color plastic scintillating optical fiber array and a preparation method and application thereof. Background Art

[0002] With the development of society, the demand for radiation detection is growing. Plastic scintillating optical fibers and optical fiber arrays made from rare earth complexes and organic scintillators are widely used in radiation detection, environmental protection, nuclear medicine, and industrial applications. Some organic scintillators have excellent neutron-gamma ray discrimination capabilities.

[0003] Plastic scintillating optical fibers are suitable for mass production and commercial applications due to their small size, light weight, ease of molding, and low cost. These fiber arrays offer advantages such as miniaturization, long-distance transmission, and immunity to electromagnetic interference, making them ideal for radiation detection in complex environments. Furthermore, these fiber arrays are used in X-ray imaging, enabling high-resolution and long-distance imaging.

[0004] Two major advantages of three-color plastic scintillating fiber arrays over conventional plastic scintillating fiber arrays are that they cover the red, green, and blue wavelength bands, making them compatible with a wider range of photodetectors with different wavelength sensitivities. Another advantage is that three-color plastic scintillating fiber arrays can be arranged into various patterns. However, there are currently no reports of fiber arrays composed of red, green, and blue fibers being used as radiation detection and imaging sensors. Summary of the Invention

[0005] The present invention provides a three-color plastic scintillating optical fiber array and a preparation method and application thereof, which can solve the wavelength range limitation problem of the plastic scintillating optical fiber array in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for preparing a three-color plastic scintillating optical fiber array comprises the following steps:

[0008] S1. Prepare red, green, and blue optical fibers. Arrange the three-color plastic scintillating fibers in one dimension using a precision displacement platform. Use a flattening mold to adjust the horizontal distribution of the fibers to avoid deformation.

[0009] S2. Fixing the two ends of the arranged optical fibers with adhesive to form a single-row optical fiber array;

[0010] S3. Repeat the above operation to form multiple rows of optical fiber arrays. The multiple rows of optical fiber arrays are aligned in an orderly manner up and down according to the set pattern, fixed with adhesive, and the end faces are polished to form a three-color plastic flashing optical fiber array. The end faces of the array emit light to present the logo combination pattern.

[0011] Furthermore, the diameter of the three-color plastic scintillating optical fiber is 100-2000 μm. The red optical fiber, the green optical fiber and the blue optical fiber are optical fibers that emit red, green and blue light respectively.

[0012] Furthermore, the logo combination pattern is a letter combination shape or a geometric figure, and a dynamic color display effect is formed by arranging three-color plastic flashing optical fibers. In the arrangement of the optical fiber array, the positions of the three-color plastic flashing optical fibers can be interchanged to form a display effect with variable colors but fixed font shapes.

[0013] Furthermore, the adhesive is UV curing glue or super glue.

[0014] Furthermore, the material of the three-color plastic scintillating optical fiber is polymethyl methacrylate or polystyrene.

[0015] Furthermore, the scintillator material of the core layer of the red light optical fiber is a europium rare earth complex or an organic compound;

[0016] The europium rare earth complex is at least one of tris(thenoyltrifluoroacetone)bis(triphenylphosphine oxide)europium(III), (1,10-phenanthroline)tris[4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione]europium(III) and tris(dibenzoylmethane)mono(phenanthroline)europium(III);

[0017] The organic compound is at least one of 1,4-dimethyl-9,10-diphenylanthracene and 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminophenylvinyl)-4H-pyran;

[0018] The added amount of the scintillator material is 0.1-10 wt % of the total mass of the core layer.

[0019] Furthermore, the scintillator material of the core layer of the green optical fiber is a terbium rare earth complex or an organic compound;

[0020] The terbium rare earth complex is at least one of 1,10-phenanthroline triacetylacetonate terbium (III), tris(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione)terbium (III) and tris(dibenzoylmethane)mono(phenanthroline)terbium (III);

[0021] The organic compound is at least one of 9,10-bisphenylethynylanthracene and 3-hydroxyflavone;

[0022] The scintillator material accounts for 0.02-8 wt% of the total mass of the core layer.

[0023] Furthermore, the scintillator material of the core layer of the blue optical fiber is an oxazole compound or a polycyclic aromatic hydrocarbon compound;

[0024] The oxazole compound is at least one of 2-(4-biphenyl)-5-phenyloxadiazole and 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole;

[0025] The polycyclic aromatic hydrocarbon compound is at least one of 9,10-diphenylanthracene and p-terphenyl;

[0026] The added amount of the scintillator material is 0.01-10 wt % of the total mass of the core layer.

[0027] Furthermore, the scintillator material of the core layer of the green optical fiber is 1,10-phenanthroline triacetylacetonate terbium (III) or 9,10-bisphenylethynyl anthracene, and the added amount is 0.1-5wt% of the total mass of the core layer.

[0028] Furthermore, the scintillator material of the core layer of the green optical fiber is tris(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione)terbium(III), and the addition amount is 0.2-6wt% of the total mass of the core layer.

[0029] Furthermore, the scintillator material of the core layer of the green optical fiber is tris(dibenzoylmethane)mono(phenanthroline)terbium(III), and the addition amount is 0.2-8wt% of the total mass of the core layer.

[0030] Furthermore, the scintillator material of the core layer of the green optical fiber is 3-hydroxyflavone, and the added amount is 0.02-5 wt% of the total mass of the core layer.

[0031] Furthermore, the scintillator material of the core layer of the blue optical fiber is 2-(4-biphenyl)-5-phenyloxadiazole, and the added amount is 0.2-10 wt% of the total mass of the core layer.

[0032] Furthermore, the scintillator material of the core layer of the blue optical fiber is 2-(4'-tert-butylphenyl)-5-(4'-biphenyl)-1,3,4-oxadiazole or 9,10-diphenylanthracene, and the added amount is 0.01-8wt% of the total mass of the core layer.

[0033] The present invention also provides a three-color plastic scintillating optical fiber array, which is prepared by the above-mentioned preparation method. The three-color plastic scintillating optical fiber array has radiation responsiveness, anti-electromagnetic interference and long-distance transmission capability.

[0034] The present invention also provides an application of a three-color plastic scintillating optical fiber array. The three-color plastic scintillating optical fiber prepared by the above preparation method is suitable for preparing radiation detection and imaging sensors, and can be used for radiation detection, industrial testing and medical imaging.

[0035] Beneficial effects of the present invention:

[0036] (1) The three-color plastic scintillating fiber array provided by the present invention is composed of plastic scintillating fibers that emit red, green, and blue light. The preparation method is simple and easy to implement. The fibers are made of polymethyl methacrylate (PMMA) or polystyrene (PS), which have good toughness. These three types of fibers have good radiation responsiveness and stability.

[0037] (2) The three-color plastic scintillating optical fiber array prepared by the present invention can be used to prepare radiation detection and imaging sensors. The optical fiber array has a simple structure and low manufacturing cost and can be promoted and applied on a large scale.

[0038] (3) The three-color plastic scintillating fiber array prepared by the present invention features miniaturization, long-distance transmission, and resistance to electromagnetic interference, making it ideal for radiation detection in complex environments. Furthermore, the fiber array is used in X-ray imaging, enabling high-resolution and long-distance imaging, and is widely applicable in radiation detection, industrial testing, medical imaging, and many other fields.

[0039] (4) The three-color plastic scintillating optical fiber array prepared by the present invention covers the red, green and blue wavelength bands, and therefore can match more photodetectors with different wavelength sensitivities.

[0040] (5) The three-color plastic scintillating optical fiber array prepared by the present invention can be arranged into different pattern combinations and can form different patterns under X-ray irradiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] Figure 1 The absorption and emission spectra of the scintillator materials tris(thenoyltrifluoroacetone)bis(triphenylphosphine oxide)europium(III), 9,10-bisphenylethynylanthracene, and 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole used in the preparation of the three-color plastic scintillating optical fiber array in Example 1 of the present invention are shown;

[0043] Figure 2 is the X-ray dose response of three types of plastic scintillating optical fibers required for the three-color plastic scintillating optical fiber array prepared in Example 1 of the present invention;

[0044] Figure 3 1 is a diagram showing the arrangement structure of a three-color plastic scintillating optical fiber array prepared in Example 1 of the present invention;

[0045] Figure 4 1 is a diagram showing the arrangement structure of a three-color plastic scintillating optical fiber array prepared in Example 2 of the present invention;

[0046] Figure 5 This is a physical picture of the three-color plastic scintillating optical fiber array prepared in Example 1 of the present invention;

[0047] Figure 6 This is an X-ray irradiation image of the three-color plastic scintillating optical fiber array prepared in Example 1 of the present invention in a dark environment;

[0048] Figure 7 This is an X-ray imaging diagram of a small circular ring produced by the three-color plastic scintillating optical fiber array prepared in Example 4 of the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] Example 1

[0051] A method for preparing a three-color plastic scintillating optical fiber array comprises:

[0052] Step 1. Select three-color plastic scintillating optical fibers with a diameter of 1000 μm, including red, green, and blue optical fibers. The material of the three-color plastic scintillating optical fibers is polystyrene. The scintillator material of the core layer of the red optical fiber (PSF-R) is tris(thienoyltrifluoroacetone)bis(triphenylphosphine oxide) europium (III), and the addition amount is 2 wt% of the total mass of the core layer; the scintillator material of the core layer of the green optical fiber (PSF-G) is 9,10-bisphenylethynyl anthracene, and the addition amount is 0.4 wt% of the total mass of the core layer; the scintillator material of the core layer of the blue optical fiber (PSF-B) is 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole, and the addition amount is 3 wt% of the total mass of the core layer.

[0053] Step 2: Take an optical fiber of appropriate length, fix its position, and use a 55°C blade to quickly thermally cut the optical fiber. Use sandpaper specially used for polishing optical fibers to polish both ends to ensure that the end faces are flat, and then wipe them with alcohol to make them neat.

[0054] Step 3: Use a precision displacement platform to arrange the three-color plastic scintillating optical fibers in an orderly manner along a one-dimensional direction to ensure a strict arrangement relationship between adjacent optical fibers. Use a flat mold to adjust the horizontal distribution of the optical fibers to avoid optical fiber deformation.

[0055] Step 4: Fix both ends of the arranged optical fibers with UV-curable adhesive to form a single-row optical fiber array.

[0056] Step 5. Repeat the above operation to form multiple rows of optical fiber arrays. The multiple rows of optical fiber arrays are aligned in order according to the set pattern, fixed with UV curing glue, and the end faces are polished with sandpaper specially used for polishing optical fibers to form a three-color plastic flashing optical fiber array. The arrangement structure diagram is attached. Figure 3 , the sample is marked as S1.

[0057] Example 2

[0058] The only difference from Example 1 is that the material of the three-color plastic scintillating optical fiber is polymethyl methacrylate.

[0059] A method for preparing a three-color plastic scintillating optical fiber array comprises:

[0060] Step 1. Select three-color plastic scintillating optical fibers with a diameter of 1000 μm, including red, green, and blue optical fibers. The material of the three-color plastic scintillating optical fibers is polymethyl methacrylate. The scintillator material of the core layer of the red optical fiber (referred to as PMMA-R) is tris(thienoyltrifluoroacetone)bis(triphenylphosphine oxide) europium (III), and the addition amount is 2 wt% of the total mass of the core layer; the scintillator material of the core layer of the green optical fiber (referred to as PMMA-G) is 9,10-bisphenylethynyl anthracene, and the addition amount is 0.4 wt% of the total mass of the core layer; the scintillator material of the core layer of the blue optical fiber (referred to as PMMA-B) is 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole, and the addition amount is 3 wt% of the total mass of the core layer.

[0061] Step 2: Take an optical fiber of appropriate length, fix its position, and use a 55°C blade to quickly thermally cut the optical fiber. Use sandpaper specially used for polishing optical fibers to polish both ends to ensure that the end faces are flat, and then wipe them with alcohol to make them neat.

[0062] Step 3: Use a precision displacement platform to arrange the three-color plastic scintillating optical fibers in an orderly manner along a one-dimensional direction to ensure a strict arrangement relationship between adjacent optical fibers. Use a flat mold to adjust the horizontal distribution of the optical fibers to avoid optical fiber deformation.

[0063] Step 4: Fix both ends of the arranged optical fibers with UV-curable adhesive to form a single-row optical fiber array.

[0064] Step 5. Repeat the above operation to form multiple rows of optical fiber arrays. The multiple rows of optical fiber arrays are aligned in order according to the set pattern, fixed with UV curing glue, and the end faces are polished with sandpaper specially used for polishing optical fibers to form a three-color plastic flashing optical fiber array. The arrangement structure diagram is attached. Figure 4 , the sample is marked as S2.

[0065] Example 3

[0066] The only difference from Example 1 is that the scintillator material and addition amount of the core layer of the three-color plastic scintillating optical fiber are different. The other steps are the same as Example 1. The specific materials and addition amounts are as follows:

[0067] The scintillator material of the core layer of the red light fiber (PSF-R) is tris(dibenzoylmethane)mono(phenanthroline)europium(III), and the addition amount is 1wt% of the total mass of the core layer; the scintillator material of the core layer of the green light fiber (PSF-G) is tris(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione)terbium(III), and the addition amount is 3wt% of the total mass of the core layer; the scintillator material of the core layer of the blue light fiber (PSF-B) is p-terphenyl, and the addition amount is 2wt% of the total mass of the core layer.

[0068] The sample is labeled S3.

[0069] Example 4

[0070] The only difference from Example 1 is that the scintillator material and addition amount of the core layer of the three-color plastic scintillating optical fiber are different. The other steps are the same as Example 1. The specific materials and addition amounts are as follows:

[0071] The scintillator material of the core layer of the red light fiber (PSF-R) is (1,10-phenanthroline) tris[4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione] europium (III), and the addition amount is 2wt% of the total mass of the core layer; the scintillator material of the core layer of the green light fiber (PSF-G) is 3-hydroxyflavone, and the addition amount is 2wt% of the total mass of the core layer; the scintillator material of the core layer of the blue light fiber (PSF-B) is 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole, and the addition amount is 4wt% of the total mass of the core layer.

[0072] The sample is labeled S4.

[0073] Example 5

[0074] The only difference from Example 1 is that the scintillator material and addition amount of the core layer of the three-color plastic scintillating optical fiber are different. The other steps are the same as Example 1. The specific materials and addition amounts are as follows:

[0075] The scintillator material of the core layer of the red light fiber (PSF-R) is tris(thenoyltrifluoroacetone)bis(triphenylphosphine oxide) europium(III), and the addition amount is 4wt% of the total mass of the core layer; the scintillator material of the core layer of the green light fiber (PSF-G) is 9,10-bisphenylethynylanthracene, and the addition amount is 0.25wt% of the total mass of the core layer; the scintillator material of the core layer of the blue light fiber (PSF-B) is 9,10-diphenylanthracene, and the addition amount is 1.5wt% of the total mass of the core layer.

[0076] The sample is labeled S5.

[0077] Example 6

[0078] The only difference from Example 1 is that the scintillator material and addition amount of the core layer of the three-color plastic scintillating optical fiber are different. The other steps are the same as Example 1. The specific materials and addition amounts are as follows:

[0079] The scintillator material of the core layer of the red light fiber (PSF-R) is tris(thenoyltrifluoroacetone)bis(triphenylphosphine oxide) europium (III), and the addition amount is 4wt% of the total mass of the core layer; the scintillator material of the core layer of the green light fiber (PSF-G) is 1,10-phenanthroline triacetylacetonate terbium (III), and the addition amount is 2wt% of the total mass of the core layer; the scintillator material of the core layer of the blue light fiber (PSF-B) is 2-(4-biphenyl)-5-phenyloxadiazole, and the addition amount is 2wt% of the total mass of the core layer.

[0080] The sample was labeled S6.

[0081] Comparative Example 1

[0082] This comparative example is an optical fiber matrix prepared from the optical fiber obtained in Example 1 of the patent document publication number CN117368242A.

[0083] Comparative Example 2

[0084] This comparative example is the optical fiber matrix prepared in Example 1 of the patent document with publication number CN108381955A.

[0085] Performance characterization:

[0086] The three-color plastic scintillating optical fiber array prepared in Example 1 was used as an example for testing.

[0087] The absorption and emission spectra of the three optical fiber scintillator materials required for the prepared three-color plastic scintillating optical fiber array S1 were tested, such as Figure 1 As shown in Figure 1, the scintillating materials of these optical fibers are suitable scintillating materials, and their emission peaks are located in the red, green and blue bands, respectively, which are easy to distinguish visually.

[0088] The X-ray dose response test was performed on the three plastic scintillating fibers required for the prepared three-color plastic scintillating fiber array S1. Figure 2 As shown in Figure 2, the dose detection limits of these scintillating fibers are 0.555 μGy / s, 2.775 μGy / s, and 2.22 μGy / s, respectively. Plastic scintillating fibers have good radiation response and stability.

[0089] The prepared three-color plastic scintillating fiber array S1 was subjected to an X-ray imaging test, and the test method is as follows: an imaging system was built, which includes an X-ray source, a plastic scintillating fiber array, a reflector, and a CCD (image sensor). The reflector reflects visible light to prevent X-rays from hitting the CCD directly and causing damage to the CCD. The small ring is located between the X-ray source and the plastic scintillating fiber array. The X-rays will have some of their energy blocked by the small ring, and the X-rays will interact with the plastic scintillating fiber array, which then absorbs these X-rays and emits fluorescence. Finally, the CCD sensor receives visible light and captures the image. The X-ray source uses the X-ray crystal analyzer of Dandong Tongda Co., Ltd., and its current is set to 30mA and the voltage is set to 20KV. The X-ray imaging effect of the three-color plastic scintillating fiber array S1 in a dark environment is shown in the figure below. Figure 6 As shown, the X-ray imaging of the small ring is as follows Figure 7 shown.

[0090] Compared with the comparative example, the three-color plastic scintillating optical fiber array of the technical solution of the present invention can be combined into any pattern, such as Figure 3 , as shown in Figure 4, it covers the red, green and blue wavelength bands and can match more photodetectors with different wavelength sensitivities. The fiber array has a simple production process and a complete structure (such as Figure 5 The three-color plastic scintillating fiber array radiation detection and imaging sensor demonstrates outstanding radiation detection and X-ray imaging capabilities. Its miniaturization, long-distance transmission, and resistance to electromagnetic interference make it ideal for radiation detection in complex environments. Furthermore, its application in X-ray imaging enables high-resolution and long-distance imaging. These results demonstrate that the three-color plastic scintillating fiber array radiation detection and imaging sensor is suitable for a variety of advanced applications, such as radiation detection, industrial inspection, and medical imaging.

[0091] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0092] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a three-color plastic scintillating optical fiber array, characterized in that: The following steps are involved: S1. Prepare red, green, and blue optical fibers, arrange the three-color plastic scintillating fibers in one dimension, and use a flattening mold to adjust the horizontal distribution of the fibers to avoid deformation. S2. Fixing the two ends of the arranged optical fibers with adhesive to form a single-row optical fiber array; S3. Repeat the operations of S1 and S2 to form a multi-row optical fiber array. The multi-row optical fiber array is aligned in an orderly manner up and down according to the set pattern, fixed with adhesive, and the end face is polished to form a three-color plastic flashing optical fiber array. The end face of the array emits light to present the identification combination pattern.

2. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The diameter of the three-color plastic scintillating optical fiber is 100-2000 μm.

3. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The logo combination pattern is a letter combination shape or a geometric figure.

4. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The adhesive is UV curing glue or super glue.

5. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The material of the three-color plastic scintillating optical fiber is polymethyl methacrylate or polystyrene.

6. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The scintillator material of the core layer of the red light optical fiber is a europium rare earth complex or an organic compound; The europium rare earth complex is at least one of tris(thenoyltrifluoroacetone)bis(triphenylphosphine oxide)europium(III), (1,10-phenanthroline)tris[4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione]europium(III) and tris(dibenzoylmethane)mono(phenanthroline)europium(III); The organic compound is at least one of 1,4-dimethyl-9,10-diphenylanthracene and 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminophenylvinyl)-4H-pyran; The added amount of the scintillator material is 0.1-10 wt % of the total mass of the core layer.

7. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The scintillator material of the core layer of the green optical fiber is a terbium rare earth complex or an organic compound; The terbium rare earth complex is at least one of 1,10-phenanthroline triacetylacetonate terbium (III), tris(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione)terbium (III) and tris(dibenzoylmethane)mono(phenanthroline)terbium (III); The organic compound is at least one of 9,10-bisphenylethynyl anthracene and 3-hydroxyflavone; The scintillator material accounts for 0.02-8 wt% of the total mass of the core layer.

8. The method for preparing a three-color plastic scintillating optical fiber array according to claim 1, characterized in that: The scintillator material of the core layer of the blue light optical fiber is an oxazole compound or a polycyclic aromatic hydrocarbon compound; The oxazole compound is at least one of 2-(4-biphenyl)-5-phenyloxadiazole and 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole; The polycyclic aromatic hydrocarbon compound is at least one of 9,10-diphenylanthracene and p-terphenyl; The added amount of the scintillator material is 0.01-10 wt % of the total mass of the core layer.

9. A three-color plastic scintillating optical fiber array, characterized in that: The three-color plastic scintillating optical fiber array is prepared by the preparation method according to any one of claims 1 to 8. The three-color plastic scintillating optical fiber array has radiation responsiveness, electromagnetic interference resistance, and long-distance transmission capability.

10. An application of a three-color plastic scintillating optical fiber array, characterized in that: The three-color plastic scintillating optical fiber prepared by the preparation method according to any one of claims 1 to 8 is suitable for preparing radiation detection and imaging sensors, and can be used for radiation detection, industrial testing and medical imaging.

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