Glass optical fiber light beam transmission structure with high filling rate

Abstract

The utility model relates to the technical field of light-guide fibers, in particular to a high-filling-rate glass optical fiber light transmission beam structure, which comprises first glass optical fibers, the first glass optical fibers are single optical fibers with circular sections, and in the cross section of a light transmission beam, a plurality of first glass optical fibers are closely arranged according to a regular quadrangle or a regular hexagon; first gaps are formed among the first glass optical fibers which are tightly arranged according to the regular quadrangle, and second gaps are formed among the first glass optical fibers which are tightly arranged according to the regular hexagon; and the second glass optical fibers are filled in the first gaps or the second gaps. The optical fibers with different diameters are tightly arranged to form the light transmission beam, part of the optical fibers are tightly arranged in a square or hexagonal mode, the gaps are filled with the other optical fibers, the light transmission beam with the filling rate higher than 90% can be obtained through the method, especially for the optical fibers arranged in a square mode, the filling rate of the optical fibers is increased by at least 12%, and the filling rate of the optical fibers is increased by at least 12%. And the light transmission efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fibers, in particular to a glass optical fiber light transmission structure with a high filling rate. Background Art

[0002] Glass optical fiber is a type of optical fiber. It is composed of high-refractive index glass as the core layer and low-refractive index glass as the cladding. It is a fiber filament with a concentric circle structure drawn at high temperature by the rod-tube method or the double crucible method. The diameter can range from a few microns to hundreds of microns. The thinner the diameter of the optical fiber, the softer it is.

[0003] Compared with quartz optical fiber used for optical fiber communication, glass optical fiber usually has a larger transmission loss and is only suitable for short-distance applications. The energy that a single glass optical fiber can transmit is very small, and it is also difficult to couple light, split light into multiple paths, and combine multiple paths into one. Therefore, glass optical fiber needs to be made into an optical fiber transmission beam to have real practical value. The high-filling-rate glass optical fiber transmission beam structure is composed of dozens to tens of millions of optical fiber strands of the same specification (diameter) and length gathered into a bundle. The two ends of the optical fiber strands (one end is the input end and the other end is the output end) are fixed in the end sleeve (usually metal or plastic material) with adhesive and cut and polished into a plane. The scattered optical fiber strands in the middle are protected in a sheath hose (plastic, rubber, metal hose, etc.) to ensure the flexibility and bending performance of the transmission beam.

[0004] If one end is a bundle of optical fibers, the other end is also a bundle of optical fibers, which is called a one-in-one-out fiber bundle; if one end is a bundle of optical fibers, the other end is divided into multiple bundles of optical fibers, which is called a one-drop-to-multiple-channel fiber bundle.

[0005] The high filling rate glass fiber transmission beam structure is mainly used for short-distance light transmission, energy transmission, signal transmission, image transmission, etc. within 50 meters, and the light transmission efficiency is the most important performance indicator of the high filling rate glass fiber transmission beam structure. The higher the light transmission efficiency, the less energy loss, the longer the transmission distance, and the higher the signal sensitivity.

[0006] Simply put, the light transmission efficiency of an optical fiber beam is the ratio of the light intensity (total) at the output end to the light intensity (total) at the input end. When the performance of the glass optical fiber is determined, the light transmission efficiency is proportional to the cross-sectional area of ​​the beam: the larger the cross-sectional area of ​​the beam, the more optical fibers can transmit light, and the higher the light transmission efficiency. When the cross-sectional area of ​​the beam (the size inside the end sleeve) is fixed, the light transmission efficiency is proportional to the filling rate of the optical fiber filaments in the end sleeve: the higher the filling rate of the optical fiber filaments in the ends of the beam, the larger the cross-sectional area of ​​the optical fiber that can transmit light, and the higher the light transmission efficiency. For optical fiber beams with the same diameter, when the optical fiber filament filling rate is increased from 90% to 95%, the light transmission efficiency can be increased by 11.42% compared with the original optical fiber beam.

[0007] The fiber filling rate can be understood as the ratio of the total area of ​​all fiber cross-sections to the area inside the end sleeve. Because the cross-section of the fiber is circular, when the fiber is tightly packed, there will still be gaps between the fiber filaments, so the fiber filling rate can never reach 100%.

[0008] At present, all glass fiber beam transmission structures with high filling rate on the market are made of a certain fixed diameter of optical fiber. If the optical fiber of the same diameter (D) is tightly packed in a square in the end sleeve, the maximum filling rate of the optical fiber can be calculated to be about 78.54%; if it is tightly packed in a regular hexagon, the maximum filling rate of the optical fiber can be calculated to be about 90.69%. Therefore, the current solution is to try to arrange the optical fiber tightly in a regular hexagon in order to achieve the highest optical fiber filling rate. Utility Model Content

[0009] In view of the technical problems existing in the optical fiber light transmission technology in the prior art, the utility model proposes a technical solution, a glass optical fiber light transmission structure with a high filling rate, comprising:

[0010] a first glass optical fiber, wherein the first glass optical fiber is a single optical fiber with a circular cross section, wherein in the cross section of the transmission light beam, a plurality of the first glass optical fibers are closely arranged in a regular quadrilateral or a regular hexagon, a first gap is formed between the first glass optical fibers closely arranged in a regular quadrilateral, and a second gap is formed between the first glass optical fibers closely arranged in a regular hexagon;

[0011] A second glass optical fiber filled in each of the first gap or the second gap;

[0012] The cross-sectional area of ​​the first glass optical fiber is greater than the cross-sectional area of ​​the second glass optical fiber, and the second glass optical fiber is a single optical fiber or an optical fiber bundle consisting of multiple optical fibers.

[0013] Preferably, the optical fiber bundle comprises at least two types of glass optical fibers having circular cross-sections.

[0014] Preferably, the diameter of the second glass optical fiber filled in the first gap and the second gap is 14%-45% of the diameter of the first glass optical fiber.

[0015] Preferably, the second glass optical fiber is a single optical fiber, and the second glass optical fiber includes an optical fiber a filled in the first gap, and the diameter of the first glass optical fiber is defined as D1, and the diameter of the optical fiber a filled in the first gap is defined as D2, wherein,

[0016] Preferably, the second glass optical fiber filled in the first gap is an optical fiber bundle, the optical fiber bundle includes four optical fibers b and four optical fibers c, the four optical fibers b are arranged in a regular quadrilateral, and the cross tangents of the four optical fibers b coincide with the cross tangents of the four first glass optical fibers around the first gap, the four optical fibers c are distributed in the first gap along the four corners pointed by the cross tangents, and the axes of the optical fibers c are on the cross tangents;

[0017] The optical fiber b, the optical fiber c and the first glass optical fiber are tangent to each other.

[0018] Preferably, the diameter of the first glass optical fiber is defined as D1, the diameter of optical fiber b is defined as D3, and the diameter of optical fiber C is defined as D4, wherein:

[0019] Preferably, the second glass optical fiber filled in the second gap is a single optical fiber, and the second glass optical fiber includes an optical fiber e, and the optical fiber e is tangent to the surrounding first glass optical fibers. The diameter of the first glass optical fiber is defined as D1, and the diameter of the optical fiber e is defined as D5, wherein,

[0020] Preferably, the diameter D1 of the first glass optical fiber is 50 microns.

[0021] Compared with the prior art, the advantages of the utility model are:

[0022] The present application forms a light transmission beam by closely arranging optical fibers of different diameters. Some optical fibers are closely arranged in a square or hexagon, and the remaining optical fibers are filled in the gaps. This method can obtain a light transmission beam with a filling rate higher than 90%. In particular, for optical fibers arranged in a square, the filling rate of the optical fibers is increased by at least 12%, and the light transmission efficiency is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a schematic diagram of the first arrangement of the high filling rate glass optical fiber light transmission structure shown in the utility model;

[0025] Figure 2 It is a schematic diagram of the second arrangement of the glass optical fiber light transmission structure with a high filling rate shown in the utility model;

[0026] Figure 3It is a schematic diagram of the third arrangement of the glass optical fiber light transmission structure with a high filling rate shown in the utility model. DETAILED DESCRIPTION

[0027] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0028] It should be understood that the fiber filaments with a concentric circle structure drawn from a glass rod at high temperature can have a diameter ranging from a few microns to hundreds of microns. Therefore, the present application aims to obtain a glass fiber beam transmission structure with a higher filling rate by arranging optical fibers of various diameters.

[0029] The utility model proposes a technical solution, a glass optical fiber light transmission structure with a high filling rate, comprising a first glass optical fiber and a second glass optical fiber, wherein the diameters of the first glass optical fiber and the second glass optical fiber are different, wherein the first glass optical fiber is used as a main optical fiber and is closely arranged in a regular quadrilateral or a regular hexagon to form a main light transmission part, and the second glass optical fiber can be filled into a gap formed after the main optical fiber is arranged, thereby further increasing the filling rate of the optical fiber light transmission beam.

[0030] Furthermore, the first glass optical fiber is a single optical fiber with a circular cross-section. In the cross-section of the transmission light beam, multiple first glass optical fibers are closely arranged in a regular quadrilateral or a regular hexagon, first gaps are formed between the first glass optical fibers closely arranged in a regular quadrilateral, and second gaps are formed between the first glass optical fibers closely arranged in a regular hexagon; the second glass optical fiber is filled in each first gap or second gap.

[0031] The cross-sectional area of ​​the first glass optical fiber is greater than that of the second glass optical fiber. The second glass optical fiber is a single optical fiber or an optical fiber bundle consisting of multiple optical fibers. The optical fiber bundle includes at least two types of glass optical fibers with circular cross-sections and diameters.

[0032] It should be understood that when the diameter of the glass optical fiber is larger, the gap formed after being closely arranged in a regular quadrilateral or regular hexagon is larger, and there are more selectivity for optical fibers of different sizes to fill the gap, but the hardness of the transmission light beam is also greater, and the application scenarios will be more limited. Therefore, the size selection of the main optical fiber also determines the actual application and filling rate of the transmission light beam.

[0033] In a preferred embodiment, the diameter D1 of the first glass optical fiber is 50 microns.

[0034] Optionally, the diameter of the second glass optical fiber filled in the first gap and the second gap is 14%-45% of the diameter of the first glass optical fiber.

[0035] Combination Figure 1As shown, the second glass optical fiber is a single optical fiber, and the second glass optical fiber includes an optical fiber a12 filled in the first gap. The diameter of the first glass optical fiber 11 is defined as D1, and the diameter of the optical fiber a12 filled in the first gap is defined as D2, wherein,

[0036] In a specific embodiment, the diameter of the first glass optical fiber 11 is 50 microns, the diameter of the optical fiber a12 is about 20.7 microns, the first glass optical fibers 11 are tightly arranged in a square, and the optical fibers a12 are distributed in the gaps of the first glass optical fibers 11 tightly arranged in a square. The resulting filling rate K1 of the transmission light beam is 92%, while the filling rate of the transmission light beam arranged in a square is 78.54%.

[0037] Furthermore, Figure 2 As shown, when the second glass optical fiber filled in the first gap is a fiber bundle, the fiber bundle includes four optical fibers b22 and four optical fibers c23, the four optical fibers b22 are arranged in a regular quadrilateral, and the cross tangents of the four optical fibers b22 coincide with the cross tangents of the four first glass optical fibers around the first gap, the four optical fibers c23 are distributed in the first gap along the four corners pointed by the cross tangents, and the axis of the optical fiber c23 is on the cross tangent; the optical fiber b, the optical fiber c and the first glass optical fiber are tangent to each other.

[0038] In this embodiment, the diameter of the first glass optical fiber 11 is defined as D1, the diameter of the optical fiber b22 is defined as D3, and the diameter of the optical fiber c23 is defined as D4, wherein:

[0039] When the diameter of the first glass optical fiber 11 is 50 microns, the diameter of the optical fiber b22 is about 8.6 microns, and the diameter of the optical fiber c23 is about 7.33 microns. The resulting light beam filling rate K2 is 94.58%, while the light beam filling rate arranged in a square is 78.54%.

[0040] In an optional embodiment, if Figure 3 As shown, the second glass optical fiber filled in the second gap is a single optical fiber, and the second glass optical fiber includes an optical fiber e31, and the optical fiber e31 is tangent to the surrounding first glass optical fiber 11. The diameter of the first glass optical fiber is defined as D1, and the diameter of the optical fiber e31 is defined as D5, wherein,

[0041] Specifically, taking the diameter of the first glass optical fiber 11 as 50 microns as an example, the diameter of the optical fiber e31 is about 7.73 microns, the obtained filling rate K3 of the transmission light beam is 92.86%, and the filling rate of the transmission light beam arranged in a hexagonal shape is 90.7%.

[0042] It can be seen from the above embodiments that the filling rate of the transmission light beam formed by filling optical fibers of different diameters is improved regardless of whether it is a square arrangement or a hexagonal arrangement, and the corresponding light transmission efficiency is also increased to varying degrees.

[0043] Methods for improving the filling rate of light beam

[0044] A method for improving the filling rate of a transmission light beam: preparing a first glass optical fiber and a second glass optical fiber, and arranging the first glass optical fiber and the second glass optical fiber according to the arrangement specified in the above-mentioned high filling rate glass optical fiber transmission light beam structure;

[0045] Among them, according to Figure 1 After the arrangement is arranged in the prescribed arrangement mode in the high filling rate glass optical fiber transmission beam structure shown, the filling rate of the transmission beam obtained is 92%;

[0046] according to Figure 2 After the arrangement is arranged in the prescribed arrangement mode in the high filling rate glass optical fiber transmission beam structure shown, the filling rate of the transmission beam obtained is 94.58%;

[0047] according to Figure 3 After the glass optical fiber beam transmission structure with high filling rate is arranged in the prescribed arrangement, the filling rate of the beam transmission light obtained is 92.86%.

[0048] Preferably, when arranged in the arrangement manner specified in the above-mentioned high filling rate glass optical fiber light transmission structure, the following steps are included:

[0049] Step a1, preparing a first glass optical fiber with a diameter of D1 and an optical fiber a with a diameter of D2;

[0050] Step a2, arranging the first glass optical fiber and the optical fiber a alternately in sequence layer by layer upward until a predetermined number of layers is reached;

[0051] When optical fiber a is arranged, its axis is aligned with the tangent line of the first glass optical fiber.

[0052] Specifically, Figure 1 As shown, during arrangement, the first glass optical fibers 11 of the first layer are first arranged closely so that adjacent first glass optical fibers 11 are in contact with each other, and then the second layer of optical fibers a12 are arranged, with the optical fibers a12 arranged in the gaps between the two first glass optical fibers 11, and then the third layer of first glass optical fibers 11 are arranged, and the arrangement is repeated in this way.

[0053] Preferably, in accordance with Figure 3 When the arrangement of the glass optical fiber beam transmission structure with high filling rate is arranged in the prescribed arrangement, the following steps are included:

[0054] Step a1, preparing a first glass optical fiber with a diameter of D1 and an optical fiber e with a diameter of D5;

[0055] Step a2, arranging upwards according to a plurality of circulation layers until a predetermined number of layers is reached, and each circulation layer is arranged upwards layer by layer in the order of the first glass optical fiber - optical fiber e - optical fiber e;

[0056] Among them, in each circulation layer, in order from bottom to top, the axis of the first layer of optical fiber e31 is aligned with the tangent of the first glass optical fiber, the axis of the second layer of optical fiber e31 corresponds to the axis of the first glass optical fiber, and the axis of the first glass optical fiber in the circulation layer above it corresponds to the axis of the first layer of optical fiber e31.

[0057] Specifically, the first glass optical fibers 11 are closely arranged so that adjacent first glass optical fibers 11 are in contact with each other, and then the first layer of optical fibers e31 are arranged. The second layer of optical fibers e31 is arranged in the gap between the two first glass optical fibers 11. It is required that each optical fiber e31 is at the top of the first glass optical fiber 11. During the arrangement, auxiliary tools can be used to limit the position of the optical fibers e31.

[0058] Preferably, in accordance with Figure 2 When the high filling rate glass optical fiber beam transmission structure is arranged in the prescribed arrangement, the following steps are included:

[0059] Step b1, preparing a first glass optical fiber with a diameter of D1, an optical fiber b with a diameter of D3, and an optical fiber c with a diameter of D4;

[0060] Step b2, arranging upwards according to a plurality of circulation layers until a predetermined number of layers is reached, each circulation layer being arranged upwards layer by layer in the order of first glass optical fiber-optical fiber c-optical fiber b-optical fiber c-optical fiber b-optical fiber c;

[0061] Among them, in each circulation layer, in order from bottom to top, the first layer of optical fiber c is tangent to the first glass optical fiber, the first layer of optical fiber b is tangent to the first layer of optical fiber c and the first glass optical fiber, the second layer of optical fiber c is tangent to the first glass optical fiber and the first layer of optical fiber b, the second layer of optical fiber b is tangent to the first layer of optical fiber b and the second layer of optical fiber c, and the third layer of optical fiber c is tangent to the second layer of optical fiber b.

[0062] Specifically, according to Figure 2In the arrangement order shown, the first layer arranges the first glass optical fibers 11 closely so that adjacent first glass optical fibers 11 are in contact with each other, the second layer arranges a layer of optical fiber c23 in the gap, the third layer arranges two optical fibers b22 in the two gaps formed between the optical fiber c23 and the first glass optical fiber 11, the fourth layer arranges the second layer of optical fiber c23 in the gap formed between the optical fiber b22 and the first glass optical fiber 11, the fifth layer arranges the second layer of optical fiber b22 above the optical fiber c23 and the optical fiber b22, and the sixth layer arranges the third layer of optical fiber c23 in the gap between the optical fibers b22.

[0063] In combination with the above embodiments, the present application forms a light transmission beam by closely arranging optical fibers of different diameters. Some optical fibers are closely arranged in a square or hexagon, and the remaining optical fibers are filled in the gaps. This method can obtain a light transmission beam with a filling rate higher than 90%. In particular, for optical fibers arranged in a square, the filling rate of the optical fibers is increased by at least 12%, and the light transmission efficiency is further improved.

[0064] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A glass optical fiber light transmission structure with a high filling rate, characterized in that: include: a first glass optical fiber, wherein the first glass optical fiber is a single optical fiber with a circular cross section, wherein in the cross section of the transmission light beam, a plurality of the first glass optical fibers are closely arranged in a regular quadrilateral or a regular hexagon, a first gap is formed between the first glass optical fibers closely arranged in a regular quadrilateral, and a second gap is formed between the first glass optical fibers closely arranged in a regular hexagon; A second glass optical fiber filled in the first gap or the second gap; The cross-sectional area of ​​the first glass optical fiber is greater than the cross-sectional area of ​​the second glass optical fiber, and the second glass optical fiber is a single optical fiber or an optical fiber bundle consisting of multiple optical fibers.

2. The high filling rate glass optical fiber beam transmission structure according to claim 1, characterized in that: The optical fiber bundle includes at least two kinds of glass optical fibers with circular cross-sections and diameters.

3. The high filling rate glass optical fiber beam transmission structure according to claim 2, characterized in that: The diameter of the second glass optical fiber filled in the first gap and the second gap is 14%-45% of the diameter of the first glass optical fiber.

4. The high filling rate glass optical fiber beam transmission structure according to claim 3, characterized in that: The second glass optical fiber is a single optical fiber, and the second glass optical fiber includes an optical fiber a filled in the first gap. The diameter of the first glass optical fiber is defined as D1, and the diameter of the optical fiber a filled in the first gap is defined as D2, wherein:

5. The glass optical fiber light transmission structure with high filling rate according to claim 3, characterized in that: The second glass optical fiber filled in the first gap is an optical fiber bundle, and the optical fiber bundle includes four optical fibers b and four optical fibers c. The four optical fibers b are arranged in a regular quadrilateral, and the cross tangents of the four optical fibers b coincide with the cross tangents of the four first glass optical fibers around the first gap. The four optical fibers c are distributed in the first gap along the four corners pointed by the cross tangents, and the axes of the optical fibers c are on the cross tangents; The optical fiber b, the optical fiber c and the first glass optical fiber are tangent to each other.

6. The glass optical fiber light transmission structure with high filling rate according to claim 5, characterized in that: The diameter of the first glass optical fiber is defined as D1, the diameter of optical fiber b is defined as D3, and the diameter of optical fiber C is defined as D4, wherein:

7. The glass optical fiber beam transmission structure with high filling rate according to claim 1, characterized in that: The second glass optical fiber filled in the second gap is a single optical fiber, and the second glass optical fiber includes an optical fiber e, and the optical fiber e is tangent to the surrounding first glass optical fibers. The diameter of the first glass optical fiber is defined as D1, and the diameter of the optical fiber e is defined as D5, wherein:

8. The glass optical fiber light transmission structure with high filling rate according to any one of claims 1 to 7, characterized in that: The diameter D1 of the first glass optical fiber is 50 microns.

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