Optical fiber disk

Abstract

The present invention provides a fiber optic disc, which includes an optical module heat sink, a cover plate, an optical fiber, and a cladding light stripper. The optical module heat sink has an optical fiber groove, and the optical fiber is arranged in the optical fiber groove. The cover plate is arranged above the optical module heat sink to seal the first area. The optical module heat sink includes the first area and a hollow area, and the hollow area is arranged at the center of the optical fiber groove. The cladding light stripper is arranged in the hollow area. The cooling medium flows from the top to the bottom of the heat sink module fiber optic disc through the hollow area, thereby improving the heat dissipation of the optical fiber disc. The cladding light stripper is placed in the hollow area. When the cooling medium flows in the hollow area, it can directly take away the heat accumulated on the surface of the cladding light stripper, which can fully improve the heat dissipation performance of the cladding light stripper.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor heat dissipation, and in particular to an optical fiber disk. Background Art

[0002] With the demand for high-power laser output in the semiconductor field, especially in the laser field, higher requirements are placed on the fiber optic reel, the optical components on the fiber optic reel, and especially the cladding power stripper (CPS). The fiber optic reel needs to be able to carry high-power laser energy without thermal damage. Therefore, the heat dissipation of the fiber optic reel needs to be improved to ensure that the optical fiber can quickly dissipate heat when it is subjected to high-power laser energy.

[0003] In addition, the CPS needs to be able to withstand high pump signal power to meet the needs of high-power lasers. The CPS should have high stripping efficiency and be able to effectively strip off the residual pump light in the cladding and even the reflected signal light returned in the cladding. Therefore, the CPS needs to have good heat dissipation capabilities so that the CPS has high stability and reliability requirements.

[0004] At present, in order to improve the heat dissipation performance of CPS, heat dissipation teeth are provided on the CPS shell, but the heat dissipation efficiency of the heat dissipation teeth is limited; cooling water is passed through the inside of the CPS shell, but the structure is complex, and a separate water supply is required, which is costly. Summary of the invention

[0005] The purpose of the present invention is to provide a fiber optic disc that can meet the heat dissipation requirements of high-power lasers for the fiber optic disc and optical elements in the fiber optic disc, such as a cladding light stripper, can meet the requirements for miniaturization of the fiber optic disc, can reduce the weight of the fiber optic disc, and reduce the manufacturing cost of the high heat dissipation cladding light stripper.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] The present invention provides an optical fiber disk, which includes an optical module heat sink, a cover plate, an optical fiber, and a cladding light stripper. The optical module heat sink has an optical fiber groove, and the optical fiber is arranged in the optical fiber groove. The cover plate is arranged above the optical module heat sink to seal a first area. The optical module heat sink includes the first area and a hollow area, and the hollow area is arranged at the center of the optical fiber groove. The cladding light stripper is arranged in the hollow area.

[0008] In an optional embodiment, the optical module heat sink includes an air-cooled optical module heat sink, and the back side of the air-cooled optical module heat sink includes closely-spaced heat dissipation teeth.

[0009] In an optional embodiment, the optical module heat sink includes a water-cooled optical module heat sink, and the back side of the water-cooled optical module heat sink includes a heat sink having a water channel inside.

[0010] In an optional embodiment, the optical fiber groove is in an O-shaped racetrack shape, or an 8-shaped racetrack shape.

[0011] In an optional embodiment, the hollow area is a ventilation slot, a single through-hole structure, or a double through-hole structure.

[0012] In an optional embodiment, the hollow area includes two water holes, one of which is a water inlet of the heat sink of the water-cooled optical module, and the other of which is a water outlet of the heat sink of the water-cooled optical module.

[0013] In an optional embodiment, the cladding light stripper includes an optical fiber, a quartz tube, and a shell. The quartz tube is sleeved on the outside of the optical fiber. The shell has an upper shell and a lower shell. The outer surface of the upper shell has heat dissipation teeth, and the lower shell is integrally formed with the heat dissipation plate of the optical module.

[0014] In an optional embodiment, the upper shell and the lower shell define a accommodating space for arranging the quartz tube; the accommodating space includes several sections of accommodating space, the accommodating space includes a first accommodating space and a second accommodating space, and the radius of the first accommodating space is not equal to the radius of the second accommodating space.

[0015] In an optional embodiment, the radius of the first accommodating space is 1.1-1.2 times the radius of the quartz tube; the radius of the second accommodating space is 1.3-1.6 times the radius of the quartz tube.

[0016] In an optional embodiment, the optical fiber tray further comprises an optical fiber input port and an optical fiber output port, the optical fiber input port and the optical fiber output port have an inclination angle, and the inclination angle is less than 5°.

[0017] In an optional embodiment, the optical fiber includes a connected optical fiber reducing section and a second optical fiber section, the second optical fiber section is arranged in the optical fiber groove, the diameter of the optical fiber reducing section gradually changes from a first diameter to a second diameter, wherein the first diameter is greater than the second diameter, and the diameter of the second optical fiber section is the second diameter.

[0018] The beneficial technical effects of the present invention include: a hollow area is provided in the optical fiber disk, and a cooling medium flows from the upper side to the lower side of the optical fiber disk through the hollow area, thereby improving the heat dissipation of the optical fiber disk; a cladding light stripper is placed in the hollow area, and when the cooling medium flows in the hollow area, it directly takes away the heat accumulated on the surface of the cladding light stripper, thereby greatly improving the heat dissipation efficiency of the cladding light stripper; in addition, the upper shell and the lower shell define a storage space for arranging the quartz tube; the storage space includes a plurality of storage spaces, the storage space includes a first storage space and a second storage space, and the radius of the first storage space is not equal to the radius of the second storage space. Through the structural characteristics of the storage spaces with multiple sections and different radii, on the one hand, the light of the quartz tube in the second storage space can be fully reflected, thereby further improving the heat dissipation efficiency of the cladding light stripper, and on the other hand, through the structural characteristics of the alternating arrangement of the first storage space and the second storage space, the technical problem of the quartz tube being destroyed or damaged due to excessive stress in the closed shell can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of an optical fiber disk provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of a cladding light stripper provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of an exploded structure of an optical fiber disk provided in an embodiment of the present invention;

[0023] Figure 4 A partial structural cross-sectional view of an optical fiber tray provided in an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of an optical fiber reducing section provided in an embodiment of the present invention;

[0025] Figure 6 A rear view of the optical fiber tray structure provided in an embodiment of the present invention;

[0026] Icon: 1-fiber disk; 2-optical module heat sink; 3-cover plate; 4-optical fiber; 5-cladding light stripper; 11-hollow area; 12-first area; 14-heat dissipation teeth; 22-sealing groove; 23-threaded hole; 31 threaded mounting hole; 41-optical fiber groove; 42-optical fiber reducing section; 51-shell; 52-accommodating space; 511-upper shell; 512-lower shell; 513-heat dissipation shovel teeth; 521-first accommodation space; 522-second accommodation space; 541-optical fiber introduction section; 542-optical fiber lead-out section; 61-optical fiber input port; 62-optical fiber output port. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings and specific implementations in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] An optical fiber tray provided in an embodiment of the present invention has a structure as follows: Figure 1 As shown, it includes an optical module heat sink 2, a cover plate 3, an optical fiber 4, and a cladding light stripper 5, wherein the optical module heat sink 2 has an optical fiber groove 41, and the optical fiber 4 is arranged in the optical fiber groove 41. The cover plate 3 is arranged above the optical module heat sink 2 to seal the first area 12, and the optical module heat sink 2 includes the first area 12 and a hollow area 11, the hollow area 11 is arranged at the center of the optical fiber groove, and the cladding light stripper 5 is arranged in the hollow area 11. The central hollow area 11 of the optical fiber groove 41 can reduce the weight of the optical fiber disc, and the cooling medium flows from the upper side of the optical fiber disc 1 to the lower side through the hollow area 11, thereby improving the heat dissipation of the optical fiber disc. The cladding light stripper 5 is placed on the side of the hollow area 11 away from the cover plate, and the cooling medium flows from top to bottom in the hollow area 11, directly taking away the heat accumulated on the surface of the cladding light stripper 5 placed on the flow channel of the cooling medium, greatly improving the heat dissipation performance of the cladding light stripper 5, and greatly reducing the risk of the cladding light stripper 5 being damaged by high temperature.

[0034] The optical module heat sink 2 is provided with a sealing groove 22 and a threaded hole 23 at the edge of the hollow area 11 and the outer periphery of the optical fiber groove 41. The cover plate 3 is provided with a threaded mounting hole 31 corresponding to the threaded hole 23, and the cover plate 3 is also provided with a hollow area, and the shape of the edge of the hollow area is consistent with the shape of the sealing groove 22; through the matching connection between the threaded mounting hole 31 and the threaded hole 23 and the matching installation of the edge of the hollow area and the sealing groove 22, the cover plate 3 is sealed on the upper surface of the optical module heat sink 2, which can prevent dust from entering the interior of the optical fiber disk and preventing dust from damaging the optical fiber and optical components.

[0035] The structure of the cladding light stripper 5 is as follows: Figure 2 As shown, the cladding light stripper 5 includes an optical fiber, a quartz tube, and a housing 51, wherein the quartz tube is sleeved outside the optical fiber, and the housing 51 includes an upper housing 511 and a lower housing 512. The outer surface of the upper housing 511 has heat dissipation teeth 513, and the heat dissipation teeth 513 can improve the heat dissipation capacity of the outer surface of the housing 51 of the cladding light stripper 5. Figure 3As shown, the lower housing 512 and the optical module heat sink 2 are integrally formed, thereby increasing the structural stability of the cladding light stripper.

[0036] The housing 51 has a receiving space 52 for the cladding light stripper 5. The structure of the receiving space 52 is as follows: Figure 2-Figure 3 As shown, the accommodation space 52 has a five-section structure, specifically including the first section, the second section, the third section, the fourth section and the fifth section connected in sequence. The first section, the third section and the fifth section are the first accommodation space 521, and the second section and the fourth section are the second accommodation space 522. The radius of the first accommodation space 521 is smaller than the radius of the second accommodation space 522. The quartz tube of the cladding light stripper 5 is fixed in the upper shell 511 through the first section, the third section and the fifth section. The fixing method is not limited. It can be glued in the upper shell 511 by optical glue or can be clamped in the upper shell 511 by clamping. In addition, there is a certain gap between the quartz tube of the cladding light stripper 5 and the shell in the second accommodation space 522. Through this setting, the stripping light absorbed by the quartz tube of the cladding light stripper 5 in the second accommodation space 522 can be fully reflected, thereby further improving the heat dissipation efficiency of the cladding light stripper 5; by fixing the quartz tube in the first section, the third section and the fifth section, the structural stability of the cladding light stripper 5 can be improved, and the concentrated stress at both ends of the quartz tube can be reduced.

[0037] Furthermore, in some optional embodiments, the outer surface of the upper shell 511 in the area corresponding to the third section of the accommodating space may not be provided with heat dissipation shovel teeth. Since the main function of the third section of the accommodating space is to fix the quartz tube, heat dissipation shovel teeth are not provided on the outer surface of the upper shell 511 corresponding to this area. This can ensure that the cover plate 3 is connected and fixed to the upper shell 511 in this area, thereby increasing structural reliability.

[0038] The radius of the first accommodating space 521 is 1.1-1.2 times the radius of the quartz tube in the cladding light stripper 5; the radius of the second accommodating space 522 is 1.3-1.6 times the radius of the quartz tube in the cladding light stripper 5; the first accommodating space 521 is used to fix the quartz tube of the cladding light stripper 5, and the multi-stage fixing structure can improve the structural stability and reduce the problem of stress concentration at both ends of the quartz tube; there is a certain gap between the second accommodating space 522 and the quartz tube, so that the stray light emitted by the quartz tube can be fully reflected in the second accommodating space 522, thereby improving the heat dissipation efficiency of the cladding light stripper 5.

[0039] The upper shell 511 and the lower shell 512 of the cladding light stripper 5 have adaptive grooves and convex grooves respectively. The upper shell 511 and the lower shell 512 of the cladding light stripper 5 seal the quartz tube through the grooves, the convex grooves and the sealing ring.

[0040] In addition, the upper shell 511 and the lower shell 512 of the cladding light stripper 5 are provided with the optical fiber introduction section 541 and the optical fiber lead-out section 542 of the cladding light stripper 5, and the optical fibers in the optical fiber introduction section 541 and the optical fiber lead-out section 542 are sealed and fixedly connected to the upper shell 511 and the lower shell 512 by optical glue.

[0041] In an optional embodiment, since the laser power of the current pump source is getting larger and larger, the cladding light stripper 5 in the optical fiber disk 1 must be able to handle a large amount of optical power and have a high stripping efficiency. Therefore, a plurality of cladding light strippers 5 may be provided in the hollow area 11 .

[0042] like Figure 3-Figure 4 As shown, the optical fiber tray 1 also includes an optical fiber input port 61 and an optical fiber output port 62. The optical fiber input port 61 and the optical fiber output port 62 have an inclination angle, which is less than 5° to prevent the optical fiber from bending. The optical fiber of the pump source needs to be introduced through the optical fiber input port 61 and needs to be led out through the optical fiber output port 62. Bending of the optical fiber will cause light signal overflow, micro cracks, and permanent damage to the optical fiber. Therefore, an inclination angle is set at the optical fiber input port and the optical fiber output port, and the inclination angle is less than the bending radius of the optical fiber to avoid bending of the optical fiber.

[0043] like Figure 3 , Figure 5 As shown, the optical fiber of the optical fiber disc 1 includes a connected optical fiber reducing section 42 and a second optical fiber section, wherein the second optical fiber section is arranged in the optical fiber groove 41, the diameter of the optical fiber reducing section 42 gradually changes from a first diameter to a second diameter, wherein the first diameter is greater than the second diameter, the diameter of the second optical fiber section is the second diameter, and the optical fiber is fusion-welded at the first diameter of the optical fiber. Specifically, the diameter of the first end of the optical fiber reducing section 42 is the first diameter, the diameter of the second end of the optical fiber reducing section 42 is the second diameter, and the second end of the optical fiber reducing section 42 is connected to the second optical fiber section. The optical fiber of the optical fiber disc needs to be fusion-welded with the optical fiber of the pump source, and the optical fiber core diameter mismatch and optical fiber axis misalignment during fusion will cause optical fiber loss, so an optical fiber reducing section is provided, and the optical fiber is fusion-welded at the first diameter section (i.e., the first end of the optical fiber reducing section 42), because the radius of the optical fiber is relatively thick, the loss of the optical fiber during fusion can be reduced.

[0044] Embodiment 2

[0045] The optical module heat sink 2 is an air-cooled heat sink. Figure 6As shown, the back of the air-cooled heat sink is densely distributed with heat dissipation teeth 14. The hollow area 11 can be composed of ventilation slots, a single through-hole structure, or a double through-hole structure. During operation, the airflow can flow from the top of the air-cooled heat sink through the ventilation slots and through-holes in the hollow area 11 to the bottom of the air-cooled heat sink. The cladding light stripper 5 is arranged in the hollow area 11. During operation, the airflow passing through the hollow area can directly take away the heat accumulated on the surface of the cladding light stripper 5, which greatly improves the heat dissipation efficiency of the cladding light stripper 5.

[0046] Embodiment 3

[0047] The optical module heat sink 2 is a water-cooled heat sink, the back of which is a heat sink with a water channel inside. Two water holes are arranged in the hollow area 11, one of which is the water inlet of the water-cooled heat sink, and the other is the water outlet of the water-cooled heat sink. The cladding light stripper 5 is arranged in the hollow area 11, and the cooling water flow rate of the water inlet and the water outlet is large and the temperature is low, which can quickly take away the heat accumulated on the surface of the cladding light stripper 5, greatly improving the heat dissipation efficiency of the cladding light stripper 5.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical fiber tray, characterized in that: The optical fiber disk includes an optical module heat sink, a cover plate, an optical fiber, and a cladding light stripper. The optical module heat sink has an optical fiber groove, and the optical fiber is arranged in the optical fiber groove. The cover plate is arranged above the optical module heat sink to seal the first area. The optical module heat sink includes the first area and a hollow area, and the hollow area is arranged at the center of the optical fiber groove. The cladding light stripper is arranged in the hollow area, and the cooling medium flows from top to bottom in the hollow area.

2. The optical fiber tray according to claim 1, characterized in that: The optical module heat sink includes an air-cooled optical module heat sink, and the back side of the air-cooled optical module heat sink includes closely-spaced heat dissipation teeth.

3. The optical fiber tray according to claim 1, characterized in that: The optical module heat sink comprises a water-cooled optical module heat sink, and the back side of the water-cooled optical module heat sink comprises a heat sink with a water channel inside.

4. The optical fiber tray according to claim 1, characterized in that: The optical fiber groove is in an O-shaped racetrack shape or an 8-shaped racetrack shape.

5. The optical fiber tray according to claim 2, characterized in that: The hollow area is a ventilation slot, a single through-hole structure, or a double through-hole structure.

6. The optical fiber tray according to claim 3, characterized in that: The hollow area includes two water holes, one of which is a water inlet of the heat sink of the water-cooled light module, and the other of which is a water outlet of the heat sink of the water-cooled light module.

7. The optical fiber tray according to claim 1, characterized in that: The cladding light stripper comprises an optical fiber, a quartz tube, and a shell. The quartz tube is sleeved on the outside of the optical fiber. The shell comprises an upper shell and a lower shell. The outer surface of the upper shell has heat dissipation shovel teeth. The lower shell is integrally formed with the heat dissipation plate of the optical module.

8. The optical fiber tray according to claim 7, characterized in that: The upper shell and the lower shell define a containing space for arranging the quartz tube; the containing space includes a plurality of containing spaces, the containing space includes a first containing space and a second containing space, and the radius of the first containing space is different from the radius of the second containing space.

9. The optical fiber tray according to claim 8, characterized in that: The radius of the first accommodating space is 1.1-1.2 times the radius of the quartz tube; the radius of the second accommodating space is 1.3-1.6 times the radius of the quartz tube.

10. The optical fiber tray according to claim 1, characterized in that: The optical fiber tray further comprises an optical fiber input port and an optical fiber output port, wherein the optical fiber input port and the optical fiber output port have an inclination angle, and the inclination angle is less than 5°.

11. The optical fiber tray according to claim 1, characterized in that: The optical fiber includes a connected optical fiber reducing section and a second optical fiber section, the second optical fiber section is arranged in the optical fiber groove, the diameter of the optical fiber reducing section gradually changes from a first diameter to a second diameter, wherein the first diameter is greater than the second diameter, and the diameter of the second optical fiber section is the second diameter.

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