Optical fiber array and optical component

Abstract

The present invention provides an optical fiber array and an optical component, which improves the integration by integrating the transmitting end optical fiber and the receiving end optical fiber into the same optical fiber array. At the same time, since the transmitting end optical fiber and the receiving end optical fiber are integrated into the same optical fiber array, the lengths of the optical fibers used in this embodiment are relatively consistent, and the longer optical fibers will not have greater stress due to the large difference in length between the optical fibers, thereby avoiding optical fiber deviation. At the same time, the transmitting end optical fiber and the receiving end optical fiber are arranged at different horizontal heights in the optical fiber array, thereby avoiding the scattered light signal generated by the turning optical fiber from interfering with other types of optical fibers.

Description

Technical Field

[0001] The present invention relates to the field of optical communication, and in particular to an optical fiber array and an optical component. Background Art

[0002] At present, the research and development of fiber arrays plays an important role in the optical communication industry. 100G DRSM4, 400G DR4 and 800G DR8 products all use fiber array coupling packaging, and their optical interfaces are generally in the form of MPO (multifiber push on, multi-core fiber connector). However, for 800G DR8 products, their optical interfaces also include Dual MPO12, MPO16 and double-layer MPO12, and their internal coupling optical components are mostly fiber arrays. Under the condition of MPO16 optical interface, the number of channels of 800G DR8 products is 16, including 8 at the receiving end and 8 at the transmitting end. Normally, the transmitting end of 8 channels is made into a FA (Fiber Array), and the receiving end is made into 2 FA components. The coupling of the whole process involves the FA coupling of the transmitting end and the FA coupling of the receiving end, the lens coupling of the transmitting end, and other assembly processes, and finally an optical module is formed. In this process, different FAs have different fiber lengths and there are certain tolerances. If the fiber is too long, it will cause greater stress on the fiber and there is a risk of deviation. If the fiber is too short, the MT-FA will not be installed in the tube shell and the device packaging will fail.

[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the lengths of the optical fibers used in the process of coupling the transmitting end channel and the receiving end channel are quite different. If the optical fiber is too long, it will cause greater stress on the optical fiber and there is a risk of easy deviation. If the optical fiber is too short, the MT-FA cannot be installed in the tube shell, the device packaging fails, and the stability of the packaging is affected.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, an optical fiber array is provided, wherein a first preset number of first V-grooves 31 are provided at a middle position inside the optical fiber array 3, a second preset number of second V-grooves 32 are provided at one side inside the optical fiber array 3, and a second preset number of third V-grooves 33 are provided at the other side inside the optical fiber array 3, wherein the first V-grooves 31, the second V-grooves 32 and the third V-grooves 33 are respectively used to accommodate a transmitting end optical fiber or a receiving end optical fiber;

[0007] The first V-groove 31 is introduced straightly from the front end surface of the optical fiber array 3 and passes through the back end surface of the optical fiber array 3;

[0008] The second V-groove 32 and the third V-groove 33 are both introduced from the back end surface of the optical fiber array 3, and pass through the two side end surfaces of the optical fiber array 3 after turning inside the optical fiber array 3;

[0009] When the first V-groove 31 is provided with a transmitting optical fiber, and the second V-groove 32 and the third V-groove 33 are provided with a receiving optical fiber, the front position of the optical fiber array 3 is used for coupling with the laser assembly 2, and the positions on both sides of the optical fiber array 3 are used for coupling with the PD4;

[0010] When the first V-groove 31 is used to set the receiving end optical fiber, and the second V-groove 32 and the third V-groove 33 are used to set the transmitting end optical fiber, the two side positions of the optical fiber array 3 are used to couple with the laser assembly 2, and the front position of the optical fiber array 3 is used to couple with the PD4.

[0011] Preferably, the first V-groove 31 , the second V-groove 32 and the third V-groove 33 are all arranged at different levels inside the optical fiber array 3 .

[0012] Preferably, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all arranged at different levels inside the optical fiber array 3, specifically including:

[0013] The optical fiber array 3 includes a top cover 34 and three stacked plates 35;

[0014] The first V-groove 31, the second V-groove 32 and the third V-groove 33 are respectively arranged on any one of the plates 35;

[0015] The top cover 34 covers the upper end of the uppermost plate 35 and is used to protect the optical fiber in the V-groove on the uppermost plate 35 and to limit the optical fiber.

[0016] Preferably, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all arranged at different levels inside the optical fiber array 3, specifically including:

[0017] The optical fiber array 3 includes a base 37 and a cover plate 36;

[0018] The upper end of the base 37 is provided with three steps 371 of different heights, which are respectively located at the middle position and two sides of the upper end of the base 37. The first V-groove 31 is provided on the step 371 at the middle position, and the second V-groove 32 or the third V-groove 33 is provided on the upper ends of the steps 371 at the two sides.

[0019] The cover plate 36 is provided with three table surfaces of different heights, which are respectively located in the middle and two sides of the upper end of the cover plate 36 , and each table surface is correspondingly arranged above a corresponding step 371 .

[0020] Preferably, the end surface of the optical fiber array 3 facing the laser assembly 2 is provided with a first inclined surface 38 with a bottom end facing inward and an angle greater than or equal to 8 degrees, so as to prevent the reflected light from affecting the laser assembly 2 .

[0021] Preferably, the end face of the optical fiber array 3 facing the PD4 is provided with a second inclined surface 39 with an upper end facing inward and an angle greater than or equal to 42 degrees, for ensuring that the optical signal inside the receiving end optical fiber enters the PD4 after being reflected by the end face of the second inclined surface 39.

[0022] In a second aspect, an optical component comprises a substrate 1, a laser component 2, an optical fiber array 3 as claimed in any one of claims 1 to 6, and a PD 4; the optical fiber array 3 is arranged on the substrate 1;

[0023] When the first V-groove 31 is provided with a transmitting end optical fiber, and the second V-groove 32 and the third V-groove 33 are provided with a receiving end optical fiber, the laser assembly 2 is provided at the front position of the optical fiber array 3 on the substrate 1 and directly faces the transmitting end optical fiber, and is used to transmit an optical signal to the transmitting end optical fiber, and the PD4 is provided at the positions on both sides of the optical fiber array 3 on the substrate 1, and is connected to the receiving end optical fiber, and is used to receive an optical signal;

[0024] When the first V-groove 31 is provided with a receiving end optical fiber, and the second V-groove 32 and the third V-groove 33 are provided with a transmitting end optical fiber, the laser assembly 2 is provided at both sides of the optical fiber array 3 on the substrate 1, and is directly opposite to the transmitting end optical fiber, and is used to transmit an optical signal to the transmitting end optical fiber. The PD4 is provided at the front position of the optical fiber array 3 on the substrate 1, and is connected to the receiving end optical fiber, and is used to receive an optical signal.

[0025] Preferably, the laser assembly 2 comprises: a laser 21, a TEC 22, a lens 23 and an isolator 24, wherein:

[0026] The TEC 22 is disposed on the substrate 1, the laser 21 is disposed on the TEC 22, the temperature of the laser 21 is controlled by the TEC 22, and the lens 23 is disposed on the TEC 22 and faces the optical path of the laser 21;

[0027] The isolator 24 is disposed on the substrate 1 and is located between the lens 23 and the optical fiber array 3 , and is located on the optical path of the laser 21 , so as to prevent the optical signal from being reflected back to the laser 21 .

[0028] Preferably, an optical fiber limiting block 5 is further provided on the substrate 1. The optical fiber limiting block 5 is located at the back of the optical fiber array 3 and is used to partition and fix the transmitting end optical fiber and the receiving end optical fiber.

[0029] Preferably, the optical fiber array 3 is arranged on the substrate 1, and specifically comprises:

[0030] The substrate 1 is provided with an optical fiber array limiting groove 11 matching the optical fiber array 3 , which is used to fix the optical fiber array 3 and prevent the optical fiber array 3 from being displaced on the substrate 1 .

[0031] The present invention provides an optical fiber array and an optical component, which improves the integration by integrating the transmitting end optical fiber and the receiving end optical fiber into the same optical fiber array. At the same time, since the transmitting end optical fiber and the receiving end optical fiber are integrated into the same optical fiber array, the lengths of the optical fibers used are relatively consistent, and the longer optical fiber will not have greater stress due to the large difference in length between the optical fibers, thereby preventing the optical fiber from deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of a structure in which an optical fiber array provided by an embodiment of the present invention is installed on an optical component;

[0034] Figure 2 is a structural schematic diagram of another way of installing an optical fiber array on an optical component provided by an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of a cross-sectional structure of an optical fiber array provided by an embodiment of the present invention;

[0036] Figure 4 is a schematic structural diagram of an optical fiber array provided by an embodiment of the present invention;

[0037] Figure 5 is a schematic diagram of the structure of an optical fiber array deployed according to an embodiment of the present invention;

[0038] Figure 6 is a schematic diagram of another structure of an unfolded optical fiber array provided by an embodiment of the present invention;

[0039] Figure 7 is a side view of an optical fiber array provided by an embodiment of the present invention installed on an optical component;

[0040] Figure 8 is a front view of an optical fiber array provided by an embodiment of the present invention installed on an optical component;

[0041] Fig. 9 is a schematic structural diagram of another optical fiber array provided by an embodiment of the present invention;

[0042] Fig.10 is a schematic structural diagram of another optical fiber array base provided by an embodiment of the present invention;

[0043] Fig.11 is a structural schematic diagram of an optical fiber array assembly provided by an embodiment of the present invention;

[0044] Fig.12 is a schematic structural diagram of a substrate of an optical fiber array assembly provided by an embodiment of the present invention;

[0045] Fig.13 is a schematic structural diagram of a substrate of another optical fiber array assembly provided by an embodiment of the present invention;

[0046] Fig.14 It is a schematic diagram of another structure of an optical fiber array provided by an embodiment of the present invention installed on an optical component;

[0047] Fig.15 It is a structural schematic diagram of an optical fiber limit block of an optical component provided by an embodiment of the present invention;

[0048] The diagram numbers are as follows:

[0049] Substrate 1; laser assembly 2; optical fiber array 3; PD4; first V-groove 31; second V-groove 32; third V-groove 33; top cover 34; plate 35; cover plate 36; base 37; step 371; laser 21; TEC 22; lens 23; isolator 24; first inclination angle slope 38; second inclination angle slope 39; optical fiber stop block 5; optical fiber array stop groove 11; TEC groove 12. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0051] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0052] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] Embodiment 1:

[0054] Embodiment 1 of the present invention provides an optical fiber array;

[0055] like Figure 1-Figure 3 As shown, a first preset number of first V-grooves 31 are provided in the middle position of the optical fiber array 3, a second preset number of second V-grooves 32 are provided on one side of the optical fiber array 3, and a second preset number of third V-grooves 33 are provided on the other side of the optical fiber array 3. The first V-grooves 31, the second V-grooves 32 and the third V-grooves 33 are respectively used to accommodate the transmitting end optical fiber or the receiving end optical fiber;

[0056] Among them, the V-groove is a V-shaped groove, which matches the size of the optical fiber and is used to set part of the optical fiber in the direction of the V-groove, so as to position the part of the optical fiber. Multiple V-grooves are arranged in parallel to ensure that the optical fibers are laid out in a preset manner; one side inside the optical fiber array 3 and the other side inside the optical fiber array 3 in this embodiment refer to the two sides located in the middle position of the optical fiber array 3, not the two side surfaces of the optical fiber array 3.

[0057] In this embodiment, the substrate 1 is made of tungsten copper.

[0058] In this embodiment, the optical interface is an MPOmultifiber push on, a multi-core fiber optic connector optical interface, and the fiber array assembly is applied to high-speed transmission products of 800G DR8 and above. The MPO optical interface establishes a transceiver relationship of optical signals with the fiber array assembly through optical fibers. The optical fiber used by the fiber array assembly to transmit to the optical interface is the transmitting end optical fiber, and the optical fiber used by the fiber array assembly to receive from the optical interface is the receiving end optical fiber. The number of optical fibers used in this implementation is 16, the first preset number is 8, and the second preset number is 4, or the first preset number and the second preset number are set by technical personnel in this field according to the optical interface model, and ensure that the first preset number is twice the second preset number.

[0059] The first V-groove 31 can be used to set a transmitting end optical fiber or a receiving end optical fiber, the second V-groove 32 and the third V-groove 33 can be used to set a transmitting end optical fiber or a receiving end optical fiber, and the optical fiber types set in the second V-groove 32 and the third V-groove 33 must be the same, and the optical fiber type set in the first V-groove 31 must be different from the optical fiber type set in the second V-groove 32 and the third V-groove 33.

[0060] The first V-groove 31 is introduced straightly from the front end surface of the optical fiber array 3 and passes through the back end surface of the optical fiber array 3;

[0061] The second V-groove 32 and the third V-groove 33 are both introduced from the back end surface of the optical fiber array 3, and pass through the two side end surfaces of the optical fiber array 3 after turning inside the optical fiber array 3;

[0062] In this embodiment, the back side of the optical fiber array 3 is the side facing the optical interface, and the front side of the optical fiber array 3 is the side facing away from the optical interface;

[0063] The first V-groove 31 is perpendicular to the back end face of the optical fiber array 3, and is horizontally introduced into the interior of the optical fiber array 3, straightly passes through the interior of the optical fiber array 3 and passes out from the front end face of the optical fiber array 3; the second V-groove 32 and the third V-groove 33 are symmetrical with the middle position of the optical fiber array 3 as the center, and the second V-groove 32 and the third V-groove 33 are also perpendicular to the back of the optical fiber array 3 and are horizontally introduced into the interior of the optical fiber array 3, make 90 degree turns in opposite directions on the horizontal plane inside the optical fiber array 3, and pass out from the two side end faces of the optical fiber array 3 respectively.

[0064] In order to prevent the corners of the second V-groove 32 and the third V-groove 33 from damaging the optical fiber and affecting the transmission of optical signals, the corners of the second V-groove 32 and the third V-groove 33 are rounded to alleviate the bending of the optical fiber.

[0065] Since the bending part of the optical fiber will cause the light signal to be scattered here, and the scattered light signal will affect other optical fibers, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all arranged at different levels inside the optical fiber array 3, so as to avoid the scattered light of different groups of optical fibers from each other.

[0066] Since the transmitting end optical fiber and the receiving end optical fiber are integrated into the same optical fiber array 3, the lengths of the optical fibers used in this embodiment are substantially the same.

[0067] like Figure 1 As shown, when the first V-groove 31 is provided with a transmitting end optical fiber, and the second V-groove 32 and the third V-groove 33 are provided with a receiving end optical fiber, the front position of the optical fiber array 3 is used for coupling with the laser assembly 2, and the positions on both sides of the optical fiber array 3 are used for coupling with the PD (photoelectric detector) 4;

[0068] like Figure 2As shown, when the first V-groove 31 is used to set the receiving end optical fiber, and the second V-groove 32 and the third V-groove 33 are used to set the transmitting end optical fiber, the two side positions of the optical fiber array 3 are used to couple with the laser assembly 2, and the front position of the optical fiber array 3 is used to couple with the PD4.

[0069] This embodiment improves the integration by integrating the transmitting end optical fiber and the receiving end optical fiber into the same optical fiber array 3. When coupling, it is only necessary to perform optical fiber coupling on the PD4 at the receiving end, and then the lens 23 at the transmitting end can be coupled, thereby shortening the product production cycle. At the same time, since the transmitting end optical fiber and the receiving end optical fiber are integrated into the same optical fiber array 3, the optical fiber lengths used in this embodiment are relatively consistent, and the longer optical fiber will not have greater stress due to the large difference in length between the optical fibers, thereby avoiding optical fiber deviation.

[0070] Since the bending part of the optical fiber will cause the light signal to be scattered here, and the scattered light signal will affect other optical fibers, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all arranged at different levels inside the optical fiber array 3, so as to avoid the scattered light of different groups of optical fibers from each other.

[0071] In this embodiment, the optical fiber array 3 is divided into three layers of plates 35 stacked in sequence, and the first V-groove 31, the second V-groove 32 and the third V-groove 33 are respectively arranged on different plates 35, thereby achieving the first V-groove 31, the second V-groove 32 and the third V-groove 33 being arranged at different heights in the optical fiber array 3.

[0072] like Figure 4-Figure 6 As shown, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all arranged at different levels inside the optical fiber array 3, specifically including:

[0073] The optical fiber array 3 includes a top cover 34 and three stacked plates 35;

[0074] The first V-groove 31, the second V-groove 32 and the third V-groove 33 are respectively arranged on any one of the plates 35;

[0075] The top cover 34 covers the upper end of the uppermost plate 35 and is used to protect the optical fiber in the V-groove on the uppermost plate 35 and to limit the position of the optical fiber.

[0076] In the preferred solution, each plate 35 can be provided with one type of V-groove among the first V-groove 31, the second V-groove 32 and the third V-groove 33, and each type of V-groove is only provided on one plate 35. The sizes of the three plates 35 are basically the same, and the different plates 35 are tightly connected to each other. The optical fiber is fixed in the V-groove through the pressure of the upper plate 35 or the top cover 34 on the lower plate 35, ensuring that the optical fiber will not fall out from the top of the V-groove.

[0077] Since the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all at different levels inside the optical fiber array 3, during actual setting and installation, the docking level of the laser assembly 2 and the PD4 should be consistent with the level of the corresponding optical fiber in the V-groove.

[0078] Considering that when the transmitting end optical fiber receives the optical signal from the laser 21, the reflected light will affect the laser 21, a bevel should be set on the end face of the optical fiber array 3 that receives the optical signal from the laser 21 to avoid the above situation.

[0079] like Figure 7 As shown, the end face of the optical fiber array 3 facing the laser assembly 2 is provided with a first inclined surface 38 with a bottom end facing inward and an angle greater than or equal to 8 degrees, so as to prevent the reflected light from affecting the laser assembly 2.

[0080] In this embodiment, since the transmitting optical fiber may only be arranged on one or two plates 35, it is only necessary to set the first inclined surface 38 on the end face of the plate 35 where the transmitting optical fiber is located facing the laser 21. The plate 35 where the transmitting optical fiber is not arranged does not need to be set with the first inclined surface 38. The first inclined surface 38 is formed by grinding.

[0081] Considering that when PD4 receives the optical signal from the receiving optical fiber, it is necessary to ensure that the optical signal enters the photosensitive surface of PD4, it is necessary to set a bevel on the end face of the optical fiber array 3 facing PD4 to facilitate the above situation.

[0082] like Figure 8 As shown, the end face of the optical fiber array 3 facing the PD4 is provided with a second inclined surface 39 with an upper end facing inward and greater than or equal to 42 degrees, which is used to ensure that the optical signal inside the receiving end optical fiber enters the PD4 after being reflected by the end face of the second inclined surface 39.

[0083] In this embodiment, since the receiving optical fiber may only be arranged on one or two plates 35, it is only necessary to set a second inclined surface 39 on the end face of the plate 35 where the receiving optical fiber is located facing PD4. The plate 35 where the transmitting optical fiber is not arranged does not need to be set with a second inclined surface 39. The second inclined surface 39 is formed by grinding.

[0084] Embodiment 2:

[0085] Embodiment 2 of the present invention provides another optical fiber array based on Embodiment 1, and adopts a different method to set the first V-groove 31, the second V-groove 32 and the third V-groove 33 at different levels inside the optical fiber array 3.

[0086] like Fig. 9 and Fig.10 As shown, the optical fiber array 3 includes a base 37 and a cover plate 36;

[0087] The upper end of the base 37 is provided with three steps 371 of different heights, which are respectively located at the middle position and two sides of the upper end of the base 37. The first V-groove 31 is provided on the step 371 at the middle position, and the second V-groove 32 or the third V-groove 33 is provided on the upper ends of the steps 371 at the two sides.

[0088] The cover plate 36 is provided with three table surfaces of different heights, which are respectively located in the middle and two sides of the upper end of the cover plate 36 , and each table surface is correspondingly arranged above a corresponding step 371 .

[0089] In the preferred embodiment, each step 371 is only provided with one type of the first V-groove 31, the second V-groove 32 and the third V-groove 33, and each type of V-groove is only provided on one step 371. The optical fiber is fixed in the V-groove through the pressure of the cover plate 36 on the base 37 to ensure that the optical fiber will not fall out from the top of the V-groove.

[0090] In this embodiment, since the transmitting optical fiber can only be arranged on one or two steps 371, it is only necessary to set the first inclined surface 38 on the end face of the step 371 where the transmitting optical fiber is located facing the laser 21. The step 371 where the transmitting optical fiber is not arranged does not need to be set with the first inclined surface 38. The first inclined surface 38 is formed by grinding.

[0091] In this embodiment, since the receiving optical fiber can only be arranged on one or two steps 371, it is only necessary to set a second inclined surface 39 on the end face of the step 371 where the receiving optical fiber is located facing PD4. The step 371 where the transmitting optical fiber is not arranged does not need to be set with a second inclined surface 39. The second inclined surface 39 is formed by grinding.

[0092] Embodiment 3:

[0093] Embodiment 3 of the present invention provides an optical component based on Embodiment 1 and Embodiment 2;

[0094] like Figure 1 and Figure 2As shown, it includes a substrate 1, a laser assembly 2, an optical fiber array 3 as described in any one of claims 1 to 6, and a PD 4; the optical fiber array 3 is arranged on the substrate 1;

[0095] When the first V-groove 31 is provided with a transmitting end optical fiber, and the second V-groove 32 and the third V-groove 33 are provided with a receiving end optical fiber, the laser assembly 2 is provided at the front position of the optical fiber array 3 on the substrate 1 and directly faces the transmitting end optical fiber, and is used to transmit an optical signal to the transmitting end optical fiber, and the PD4 is provided at the positions on both sides of the optical fiber array 3 on the substrate 1, and is connected to the receiving end optical fiber, and is used to receive an optical signal;

[0096] When the first V-groove 31 is provided with a receiving end optical fiber, and the second V-groove 32 and the third V-groove 33 are provided with a transmitting end optical fiber, the laser assembly 2 is provided at both sides of the optical fiber array 3 on the substrate 1, and is directly opposite to the transmitting end optical fiber, and is used to transmit an optical signal to the transmitting end optical fiber. The PD4 is provided at the front position of the optical fiber array 3 on the substrate 1, and is connected to the receiving end optical fiber, and is used to receive an optical signal.

[0097] like Figure 11-13 As shown, the laser assembly 2 includes: a laser 21, a TEC 22, a lens 23 and an isolator 24, wherein:

[0098] The TEC 22 is disposed on the substrate 1, the laser 21 is disposed on the TEC 22, the temperature of the laser 21 is controlled by the TEC 22, and the lens 23 is disposed on the TEC 22 and faces the optical path of the laser 21;

[0099] The isolator 24 is disposed on the substrate 1 and is located between the lens 23 and the optical fiber array 3 , and is located on the optical path of the laser 21 , so as to prevent the optical signal from being reflected back to the laser 21 .

[0100] The laser 21 and the lens 23 in the laser assembly 2 are both arranged above the TEC 22, and a TEC groove 12 is also arranged on the substrate 1, and the TEC groove 12 matches the size of the TEC 22, and the TEC 22 is arranged in the TEC groove 12; when the first V groove 31 is used to set the transmitting end optical fiber, and the second V groove 32 and the third V groove 33 are used to set the receiving end optical fiber, the TEC groove 12 is arranged at the front position of the optical fiber array 3, and the TEC 22 is arranged in the TEC groove 12, The laser 21 and the lens 23 are mounted on the TEC22, and the isolator 24 is arranged between the lens 23 and the optical fiber array 3; when the first V-groove 31 is used to set the receiving end optical fiber, and the second V-groove 32 and the third V-groove 33 are used to set the transmitting end optical fiber, the TEC groove 12 is set at both sides of the optical fiber array 3, and the TEC22 is set in the TEC groove 12, the laser 21 and the lens 23 are mounted on the TEC22, and the isolator 24 is set between the lens 23 and the optical fiber array 3.

[0101] In this embodiment, since the receiving optical fiber may only be arranged on one or two plates 35, it is only necessary to set a second inclined surface 39 on the end face of the plate 35 where the receiving optical fiber is located facing PD4. The plate 35 where the transmitting optical fiber is not arranged does not need to be set with a second inclined surface 39. The second inclined surface 39 is formed by grinding.

[0102] In order to prevent the optical fiber array 3 from moving as a whole due to optical fiber stress, the optical fiber array 3 needs to be fixed as a whole on the substrate 1. Therefore, this embodiment also involves the following designs:

[0103] The optical fiber array 3 is arranged on the substrate 1, and specifically comprises:

[0104] The substrate 1 is provided with an optical fiber array limiting groove 11 matching the optical fiber array 3 , which is used to fix the optical fiber array 3 and prevent the optical fiber array 3 from being displaced on the substrate 1 .

[0105] After the optical fiber array 3 is set in the optical fiber array limiting groove 11, the optical fiber array 3 is fixed to the substrate 1 by curing the glue, thereby avoiding the problem of optical path failure caused by the movement of the optical fiber array 3.

[0106] In order to further reduce the stress caused by the entire optical fiber, the present embodiment further absorbs the stress caused by the optical fiber by fixing the optical fiber in partitions.

[0107] like Fig.14 and Fig.15As shown, a fiber stop block 5 is also provided on the substrate 1. The fiber stop block 5 is located at the back of the fiber array 3 and is used to partition and fix the transmitting end fiber and the receiving end fiber.

[0108] At least four bosses are arranged on the optical fiber limit block 5, and a partition is formed between every two bosses, so as to ensure that there are at least three partitions on an optical fiber limit block 5, which are respectively used to fix the optical fiber in the first V-groove 31, the optical fiber in the second V-groove 32 and the optical fiber in the third V-groove 33. The optical fibers are arranged in different partitions, and each partition is filled with glue, so that the optical fibers in each partition are limited and fixed, thereby further reducing the stress of the optical fiber.

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical fiber array, characterized in that: A first preset number of first V-grooves (31) are arranged at a middle position inside the optical fiber array (3), a second preset number of second V-grooves (32) are arranged at one side inside the optical fiber array (3), and a second preset number of third V-grooves (33) are arranged at the other side inside the optical fiber array (3), wherein the first V-grooves (31), the second V-grooves (32) and the third V-grooves (33) are respectively used to accommodate a transmitting end optical fiber or a receiving end optical fiber; The first V-groove (31) is introduced straightly from the front end surface of the optical fiber array (3) and passes through the back end surface of the optical fiber array (3); The second V-groove (32) and the third V-groove (33) are both introduced from the back end surface of the optical fiber array (3), and after turning inside the optical fiber array (3), they pass through the end surfaces on both sides of the optical fiber array (3); the first V-groove (31), the second V-groove (32) and the third V-groove (33) are all arranged at different levels inside the optical fiber array (3); When the first V-groove (31) is provided with a transmitting optical fiber, and the second V-groove (32) and the third V-groove (33) are provided with a receiving optical fiber, the front position of the optical fiber array (3) is used for coupling with the laser assembly (2), and the positions on both sides of the optical fiber array (3) are used for coupling with the PD (4); When the first V-groove (31) is provided with a receiving optical fiber, and the second V-groove (32) and the third V-groove (33) are provided with a transmitting optical fiber, the positions on both sides of the optical fiber array (3) are used to couple with the laser assembly (2), and the front position of the optical fiber array (3) is used to couple with the PD (4).

2. The optical fiber array according to claim 1, characterized in that: The first V-groove (31), the second V-groove (32) and the third V-groove (33) are all arranged at different levels inside the optical fiber array (3), and specifically include: The optical fiber array (3) comprises a top cover (34) and three stacked plates (35); The first V-groove (31), the second V-groove (32) and the third V-groove (33) are respectively arranged on any one of the plates (35); The top cover (34) covers the upper end of the uppermost plate (35) and is used to protect the optical fiber in the V-groove on the uppermost plate (35) and to limit the position of the optical fiber.

3. The optical fiber array according to claim 1, characterized in that: The first V-groove (31), the second V-groove (32) and the third V-groove (33) are all arranged at different levels inside the optical fiber array (3), and specifically include: The optical fiber array (3) comprises a base (37) and a cover plate (36); The upper end of the base (37) is provided with three steps (371) of different heights, which are respectively located at the middle position and two side positions of the upper end of the base (37); the first V-groove (31) is provided on the step (371) at the middle position, and the second V-groove (32) or the third V-groove (33) is provided on the upper ends of the steps (371) at the two side positions; The cover plate (36) is provided with three table surfaces of different heights, which are respectively located in the middle and on both sides of the upper end of the cover plate (36), and each table surface is correspondingly arranged above a corresponding step (371).

4. The optical fiber array according to claim 1, characterized in that: The end surface of the optical fiber array (3) facing the laser assembly (2) is provided with a first inclined surface (38) with a bottom end facing inwards and an angle greater than or equal to 8 degrees, so as to prevent reflected light from affecting the laser assembly (2).

5. The optical fiber array according to claim 1, characterized in that: The end face of the optical fiber array (3) facing the PD (4) is provided with a second inclined surface (39) with an upper end facing inward and an angle greater than or equal to 42 degrees, so as to ensure that the optical signal inside the optical fiber at the receiving end enters the PD (4) after being reflected by the end face of the second inclined surface (39).

6. An optical component, characterized in that: It comprises a substrate (1), a laser assembly (2), an optical fiber array (3) as claimed in any one of claims 1 to 5, and a PD (4); the optical fiber array (3) is arranged on the substrate (1); When the first V-groove (31) is provided with a transmitting optical fiber, and the second V-groove (32) and the third V-groove (33) are provided with a receiving optical fiber, the laser assembly (2) is arranged at a front position of the optical fiber array (3) on the substrate (1) and directly faces the transmitting optical fiber, and is used to transmit an optical signal to the transmitting optical fiber; the PD (4) is arranged at two sides of the optical fiber array (3) on the substrate (1), and is connected to the receiving optical fiber, and is used to receive the optical signal; When the first V-groove (31) is provided with a receiving optical fiber, and the second V-groove (32) and the third V-groove (33) are provided with a transmitting optical fiber, the laser assembly (2) is arranged at two sides of the optical fiber array (3) on the substrate (1) and directly faces the transmitting optical fiber, and is used to transmit an optical signal to the transmitting optical fiber; the PD (4) is arranged at the front position of the optical fiber array (3) on the substrate (1), and is connected to the receiving optical fiber, and is used to receive the optical signal.

7. The optical assembly according to claim 6, characterized in that: The laser assembly (2) comprises: a laser (21), a TEC (22), a lens (23) and an isolator (24), wherein: The TEC (22) is arranged on the substrate (1), the laser (21) is arranged on the TEC (22), the temperature of the laser (21) is controlled by the TEC (22), and the lens (23) is arranged on the TEC (22) and faces the optical path of the laser (21); The isolator (24) is arranged on the substrate (1) and is located between the lens (23) and the optical fiber array (3), and is located on the optical path of the laser (21), and is used to prevent the optical signal from being reflected back to the laser (21).

8. The optical assembly according to claim 6, characterized in that: The substrate (1) is also provided with an optical fiber stop block (5), which is located at the back of the optical fiber array (3) and is used to partition and fix the transmitting end optical fiber and the receiving end optical fiber.

9. The optical assembly according to claim 6, characterized in that: The optical fiber array (3) is arranged on the substrate (1), and specifically comprises: The substrate (1) is provided with an optical fiber array limiting groove (11) matching the optical fiber array (3) and used for fixing and installing the optical fiber array (3) to prevent the optical fiber array (3) from being displaced on the substrate (1).

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