CN115933075A - Optical fiber array and optical assembly - Google Patents
Optical fiber array and optical assembly Download PDFInfo
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- CN115933075A CN115933075A CN202310000750.8A CN202310000750A CN115933075A CN 115933075 A CN115933075 A CN 115933075A CN 202310000750 A CN202310000750 A CN 202310000750A CN 115933075 A CN115933075 A CN 115933075A
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Abstract
The invention provides an optical fiber array and an optical assembly, which improve the integration level by integrating a transmitting end optical fiber and a receiving end optical fiber in the same optical fiber array, and simultaneously, because the transmitting end optical fiber and the receiving end optical fiber are integrated in the same optical fiber array, the lengths of the optical fibers used in the embodiment are relatively consistent, and the longer optical fibers cannot have larger stress due to overlarge length difference between the optical fibers, so that the optical fibers are prevented from deviating; meanwhile, the transmitting end optical fiber and the receiving end optical fiber are arranged on different horizontal heights in the optical fiber array, so that scattered light signals generated by the turning optical fiber are prevented from interfering with other types of optical fibers.
Description
Technical Field
The present invention relates to the field of optical communications, and in particular, to an optical fiber array and an optical module.
Background
At present, the development of the fiber array and its development play an important role in the optical communication industry, for the products 100G PSM4, 400G DR4 and 800G DR8, a coupling package of the fiber array is used, and its optical interface is generally in the form of MPO (multi fiber press on, multi fiber connector), but for the product 800G DR8, its optical interface also includes Dual MPO12, MPO16 and double-layer MPO12, and its internal coupling optical components are mostly fiber arrays, and under the condition of MPO16 optical interface, the number of channels of the 800G DR8 product is 16, including 8 receiving ends and 8 transmitting ends. In general, an emitting end with 8 channels is made into a Fiber Array (FA), a receiving end is made into 2 FA components, the coupling in the whole process relates to the FA coupling of the emitting end and the FA coupling of the receiving end, the lens coupling of the emitting end and other assembly processes, and finally an optical module is formed.
In view of this, overcoming the drawbacks of the prior art is a problem to be solved urgently in the art.
Disclosure of Invention
The technical problem to be solved by the 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 different greatly, if the optical fibers are too long, the optical fibers have larger stress, the risk of deviation is easy to exist, and if the optical fibers are too short, the MT-FA cannot be installed into the tube shell, and the encapsulation of the device is invalid, so that the encapsulation stability is influenced.
The invention adopts the following technical scheme:
in a first aspect, a first V-shaped groove 31 with a first preset number is arranged in the middle of the inside of an optical fiber array 3, a second V-shaped groove 32 with a second preset number is arranged on one side of the inside of the optical fiber array 3, a third V-shaped groove 33 with a second preset number is arranged on the other side of the inside of the optical fiber array 3, and the first V-shaped groove 31, the second V-shaped groove 32, and the third V-shaped groove 33 are respectively used for accommodating a transmitting end optical fiber or a receiving end optical fiber;
the first V-groove 31 leads straight from the front end face of the optical fiber array 3 and passes through the back end face of the optical fiber array 3;
the second V-groove 32 and the third V-groove 33 are both led in from the back end face of the optical fiber array 3, and are respectively led out from the two side end faces of the optical fiber array 3 after being turned inside the optical fiber array 3;
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 two side positions of the optical fiber array 3 are used for coupling with the PD4;
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, two side positions of the optical fiber array 3 are used for coupling with the laser component 2, and a front position of the optical fiber array 3 is used for coupling with the PD 4.
Preferably, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all disposed at different levels inside the optical fiber array 3.
Preferably, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all disposed 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 plate members 35;
the top cover 34 covers the upper end of the plate 35 on the uppermost layer, and is used for protecting the optical fiber in the V-shaped groove on the plate 35 on the uppermost layer and limiting the optical fiber.
Preferably, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are all disposed at different horizontal heights 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 with different heights, which are respectively positioned at the middle position and two side positions of the upper end of the base 37, the step 371 at the middle position is provided with the first V-shaped groove 31, and the upper ends of the steps 371 at the two side positions are provided with the second V-shaped groove 32 or the third V-shaped groove 33;
the cover plate 36 is provided with three mesas with different heights, which are respectively located at the middle position and two side positions of the upper end of the cover plate 36, and each mesa is correspondingly arranged above the corresponding step 371.
Preferably, the end face of the optical fiber array 3 facing the laser assembly 2 is provided with a first inclined slope 38 with a bottom end facing inwards and a degree greater than or equal to 8, for preventing the reflected light from affecting the laser assembly 2.
Preferably, the end face of the optical fiber array 3 facing the PD4 is provided with a second inclined slope 39 with an inward upper end and an angle greater than or equal to 42 degrees, so as 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 slope 39.
In a second aspect, an optical assembly comprising a substrate 1, a laser assembly 2, an optical fiber array 3 according to any one of claims 1 to 6, and a PD4; the optical fiber array 3 is arranged on the substrate 1;
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 arranged at the front position of the optical fiber array 3 on the substrate 1 and is opposite to the transmitting end optical fiber for transmitting an optical signal to the transmitting end optical fiber, and the PDs 4 are arranged at the two side positions of the optical fiber array 3 on the substrate 1, are butted with the receiving end optical fiber, and are used for receiving the optical signal;
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 disposed at two side positions of the optical fiber array 3 on the substrate 1 and faces the transmitting end optical fiber for transmitting an optical signal to the transmitting end optical fiber, and the PD4 is disposed at a front position of the optical fiber array 3 on the substrate 1 and is butted with the receiving end optical fiber for receiving the optical signal.
Preferably, the laser assembly 2 comprises: laser 21, TEC22, lens 23 and isolator 24, wherein:
the TEC22 is arranged on the substrate 1, the laser 21 is arranged on the TEC22, the temperature of the laser 21 is controlled through the TEC22, and the lens 23 is arranged on the TEC22 and is opposite to the light path of the laser 21;
the isolator 24 is disposed on the substrate 1, between the lens 23 and the optical fiber array 3, and on the optical path of the laser 21, and is configured to prevent the optical signal from being reflected back to the laser 21.
Preferably, the substrate 1 is further provided with an optical fiber limiting block 5, and the optical fiber limiting block 5 is located at the back position of the optical fiber array 3 and used for partitioning and fixing the transmitting end optical fiber and the receiving end optical fiber.
Preferably, the optical fiber array 3 is disposed on the substrate 1, and specifically includes:
the substrate 1 is provided with an optical fiber array limiting groove 11 matched with the optical fiber array 3 and used for fixedly mounting the optical fiber array 3 and preventing the optical fiber array 3 from displacing on the substrate 1.
The invention provides an optical fiber array and an optical assembly, which improve the integration level by integrating a transmitting end optical fiber and a receiving end optical fiber in the same optical fiber array, and simultaneously, because the transmitting end optical fiber and the receiving end optical fiber are integrated in the same optical fiber array, the used optical fibers are relatively consistent in length, larger stress of longer optical fibers can not be caused due to overlarge length difference between the optical fibers, and the optical fibers are prevented from deviating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of an optical fiber array mounted on an optical module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative fiber array mounted on an optical package according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional diagram of an optical fiber array according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an optical fiber array according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an expanded structure of an optical fiber array according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an expanded structure of an alternative optical fiber array provided by an embodiment of the present invention;
FIG. 7 is a side view of an optical fiber array mounted on an optical package according to an embodiment of the present invention;
FIG. 8 is a front view of an optical fiber array mounted on an optical package according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of another optical fiber array provided by an embodiment of the present invention;
FIG. 10 is a schematic diagram of a base structure of another optical fiber array provided in an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a fiber array assembly according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a substrate of a fiber array package according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of another alternative fiber array package substrate according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of an alternative fiber array mounted on an optical package according to an embodiment of the present invention;
FIG. 15 is a schematic structural diagram of an optical fiber stopper of an optical subassembly according to an embodiment of the present invention;
the reference numbers are as follows:
a substrate 1; a laser assembly 2; an optical fiber array 3; PD4; a first V groove 31; a second V-groove 32; a third V groove 33; a top cover 34; a plate 35; a cover plate 36; a base 37; step 371; a laser 21; TEC22; a lens 23; an isolator 24; a first angled ramp 38; a second angled ramp 39; an optical fiber stopper 5; an optical fiber array limiting groove 11; and a TEC well 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are for convenience in describing the present invention only and do not require that the present invention be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1:
as shown in fig. 1-3, a first V-shaped groove 31 with a first preset number is disposed in a middle position inside the optical fiber array 3, a second V-shaped groove 32 with a second preset number is disposed on one side inside the optical fiber array 3, a third V-shaped groove 33 with a second preset number is disposed on the other side inside the optical fiber array 3, and the first V-shaped groove 31, the second V-shaped groove 32, and the third V-shaped groove 33 are respectively used for accommodating a transmitting end optical fiber or a receiving end optical fiber;
the optical fiber positioning device comprises a plurality of optical fibers, a plurality of V-shaped grooves and a plurality of optical fiber positioning units, wherein the V-shaped grooves are V-shaped grooves which are matched with the optical fibers in size and used for arranging part of the optical fibers in the V-shaped grooves according to the running direction of the V-shaped grooves so as to position the part of the optical fibers, and the plurality of V-shaped grooves are arranged in parallel to ensure that the optical fibers are distributed in a preset mode; the inner side of the optical fiber array 3 and the inner side of the optical fiber array 3 refer to two sides located in the middle of the optical fiber array 3 in this embodiment, but not two sides of the optical fiber array 3.
The substrate 1 is made of tungsten copper in this embodiment.
In this embodiment, the optical interface is an MPOmultifiber push on, multi-fiber connector optical interface, the optical fiber array assembly is applied to high-speed transmission products of 800G DR8 and above, the MPO optical interface establishes a transceiving relationship of optical signals with the optical fiber array assembly through optical fibers, the optical fibers used by the optical fiber array assembly to transmit to the optical interface are transmitting-end optical fibers, and the optical fibers used by the optical fiber array assembly to receive signals from the optical interface are receiving-end optical fibers; the number of the optical fibers used in the implementation is 16, the first preset number is 8, the second preset number is 4, or the first preset number and the second preset number are set by a person skilled in the art according to the type of the optical interface, and the first preset number is twice as large as the second preset number.
The first V-groove 31 may be provided with a transmitting end optical fiber or a receiving end optical fiber, the second V-groove 32 and the third V-groove 33 may be provided with a transmitting end optical fiber or a receiving end optical fiber, and the type of the optical fiber provided by the second V-groove 32 and the third V-groove 33 must be the same, while the type of the optical fiber provided by the first V-groove 31 must be different from the type of the optical fiber provided by the second V-groove 32 and the third V-groove 33.
The first V-groove 31 is straight led in from the front end face of the optical fiber array 3 and passes out from the back end face of the optical fiber array 3;
the second V-groove 32 and the third V-groove 33 are both led in from the back end face of the optical fiber array 3, and are respectively led out from the two side end faces of the optical fiber array 3 after being turned inside the optical fiber array 3;
in this embodiment, the back surface of the optical fiber array 3 is a surface facing the optical interface, and the front surface of the optical fiber array 3 is a surface facing away from the optical interface;
the first V-shaped groove 31 is perpendicular to the back end face of the optical fiber array 3, is horizontally introduced into the optical fiber array 3, and straightly passes through the inside of the optical fiber array 3 and penetrates out of the front end face of the optical fiber array 3; the second V-shaped groove 32 and the third V-shaped groove 33 are symmetrical left and right with the middle position of the optical fiber array 3 as a center, the second V-shaped groove 32 and the third V-shaped groove 33 are also perpendicular to the back surface of the optical fiber array 3 and are horizontally introduced into the optical fiber array 3, and 90-degree corner turning is respectively performed on the horizontal plane in the optical fiber array 3 in opposite directions and respectively penetrates out of the end surfaces of two sides of the optical fiber array 3.
In order to prevent the corners of the second V-groove 32 and the corners of the third V-groove 33 from breaking the optical fiber and simultaneously affecting the optical signal transmission, the corners of the second V-groove 32 and the corners of the third V-groove 33 are rounded, thereby alleviating the bending of the optical fiber.
Since the bent portion of the optical fiber may cause the optical signal to be scattered at this position, and the scattered optical signal may affect other optical fibers, the first V-groove 31, the second V-groove 32, and the third V-groove 33 are all disposed at different levels inside the optical fiber array 3, so that the scattered light of different groups of optical fibers is avoided from each other.
Since the transmitting end optical fiber and the receiving end optical fiber are integrated in the same optical fiber array 3, the optical fibers used in this embodiment have substantially the same length.
As shown in fig. 1, 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 both side positions of the optical fiber array 3 are used for coupling with a PD (photo detector) 4;
as shown in fig. 2, 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, two side positions of the optical fiber array 3 are used for coupling with the laser module 2, and a front position of the optical fiber array 3 is used for coupling with the PD 4.
This embodiment is through integrateing launch end optic fibre and receiving terminal optic fibre in same fiber array 3, the integrated level has been improved, only need carry out optical fiber coupling to the PD4 of receiving terminal when carrying out the coupling simultaneously, then just can carry out the lens 23 coupling of launch end, the preparation cycle of product has been shortened, simultaneously because all integrate launch end optic fibre and receiving terminal optic fibre in same fiber array 3, consequently, the optical fiber length that this embodiment used is unanimous relatively, can not be because length difference is too big between the optic fibre, lead to longer optic fibre to have great stress, avoid the optic fibre off tracking.
Since the bent portion of the optical fiber may cause the optical signal to be scattered at this position, and the scattered optical signal may affect other optical fibers, the first V-groove 31, the second V-groove 32, and the third V-groove 33 are all disposed at different levels inside the optical fiber array 3, so that the scattered light of different groups of optical fibers is avoided from each other.
In the present embodiment, the first V-groove 31, the second V-groove 32 and the third V-groove 33 are arranged at different heights in the optical fiber array 3 by dividing the optical fiber array 3 into three layers of plate members 35 stacked in sequence and arranging the first V-groove 31, the second V-groove 32 and the third V-groove 33 on different plate members 35 respectively.
As shown in fig. 4 to 6, the first V-groove 31, the second V-groove 32, and the third V-groove 33 are disposed 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 plate members 35;
the top cover 34 covers the upper end of the plate 35 on the uppermost layer to protect the optical fiber in the V-groove on the plate 35 on the uppermost layer and limit the optical fiber
In a preferred embodiment, each plate 35 can be provided with one V-groove type of the first V-groove 31, the second V-groove 32 and the third V-groove 33, while each type of V-groove is provided on only one plate 35, the three plates 35 have substantially the same size, the different plates 35 are tightly connected with each other, and the optical fiber is fixed in the V-groove by the pressure of the upper plate 35 or the top cover 34 on the lower plate 35, so as to ensure that the optical fiber cannot be pulled out from the upper part of the V-groove.
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, the butt-joint level of the laser assemblies 2 and PD4 should be consistent with the level of their corresponding optical fibers in the V-grooves in the actual installation.
Considering that the reflected light affects the laser 21 when the transmitting end fiber receives the optical signal from the laser 21, a slope should be provided on the end surface of the fiber array 3 on the side receiving the optical signal from the laser 21 to avoid the above situation.
As shown in fig. 7, the end surface of the optical fiber array 3 facing the laser assembly 2 is provided with a first inclined slope 38 with a bottom end facing inwards and a first angle greater than or equal to 8 degrees, for preventing the reflected light from affecting the laser assembly 2.
In this embodiment, since the emission end optical fiber may be disposed on only one or two plate members 35, only the end surface of the plate member 35 where the emission end optical fiber is disposed facing the laser 21 needs to be provided with the first inclined angle surface 38, and the plate member 35 not provided with the emission end optical fiber does not need to be provided with the first inclined angle surface 38, where the first inclined angle surface 38 is formed by grinding.
Considering that the PD4 needs to ensure that the optical signal enters the photosensitive surface of the PD4 when receiving the optical signal from the optical fiber at the receiving end, a slope is required to be provided on the end surface of the optical fiber array 3 facing the PD4 to facilitate the above situation.
As shown in fig. 8, the end face of the optical fiber array 3 facing the PD4 is provided with a second inclined plane 39 with an upper end facing inwards and an angle greater than or equal to 42 degrees, so as 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 plane 39.
In this embodiment, since the receiving end optical fiber may be disposed on only one or two plates 35, only the plate 35 on which the receiving end optical fiber is disposed needs to be provided with the second inclined angle 39 toward the end surface of the PD4, and the plate 35 not provided with the transmitting end optical fiber does not need to be provided with the second inclined angle 39, and the second inclined angle 39 is formed by grinding.
Example 2:
As shown in fig. 9 and 10, the optical fiber array 3 includes a base 37 and a cover plate 36;
the upper end of the base 37 is provided with three steps 371 with different heights, which are respectively positioned at the middle position and two side positions of the upper end of the base 37, the step 371 at the middle position is provided with the first V-shaped groove 31, and the upper ends of the steps 371 at the two side positions are provided with the second V-shaped groove 32 or the third V-shaped groove 33;
the cover plate 36 is provided with three mesas with different heights, which are respectively located in the middle and two sides of the upper end of the cover plate 36, and each mesa is correspondingly arranged above the corresponding step 371.
In a preferred embodiment, each step 371 is provided with only 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 provided on only one step 371, so that the optical fiber is fixed in the V groove by the pressure of the cover plate 36 on the base 37, and the optical fiber is ensured not to be pulled out from the upper side of the V groove.
In this embodiment, since the emission end optical fiber may be disposed on only one or two steps 371, only the step 371 on which the emission end optical fiber is disposed is required to be provided with the first inclined slope 38 toward the end surface of the laser 21, and the step 371 on which the emission end optical fiber is not disposed is not required to be provided with the first inclined slope 38, and the first inclined slope 38 is formed by grinding.
In this embodiment, since the receiving-end optical fiber may be disposed on only one or two steps 371, only the step 371 on which the receiving-end optical fiber is disposed is required to be provided with the second inclined surface 39 toward the end surface of the PD4, and the step 371 on which the transmitting-end optical fiber is not disposed is not required to be provided with the second inclined surface 39, and the second inclined surface 39 is formed by grinding.
Example 3:
as shown in fig. 1 and 2, comprising a substrate 1, a laser assembly 2, an optical fiber array 3 according to any one of claims 1 to 6, and a PD4; the optical fiber array 3 is arranged on the substrate 1;
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 arranged at the front position of the optical fiber array 3 on the substrate 1 and is opposite to the transmitting end optical fiber for transmitting an optical signal to the transmitting end optical fiber, and the PDs 4 are arranged at the two side positions of the optical fiber array 3 on the substrate 1, are butted with the receiving end optical fiber, and are used for receiving the optical signal;
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 disposed at two side positions of the optical fiber array 3 on the substrate 1 and faces the transmitting end optical fiber for transmitting an optical signal to the transmitting end optical fiber, and the PD4 is disposed at a front position of the optical fiber array 3 on the substrate 1 and is butted with the receiving end optical fiber for receiving the optical signal.
As shown in fig. 11 to 13, the laser module 2 includes: laser 21, TEC22, lens 23 and isolator 24, wherein:
the TEC22 is arranged on the substrate 1, the laser 21 is arranged on the TEC22, the temperature of the laser 21 is controlled through the TEC22, and the lens 23 is arranged on the TEC22 and is opposite to the light path of the laser 21;
the isolator 24 is disposed on the substrate 1, between the lens 23 and the optical fiber array 3, and on the optical path of the laser 21, and is configured to prevent the optical signal from being reflected back to the laser 21.
A laser 21 and a lens 23 in the laser component 2 are both arranged above the TEC22, the substrate 1 is further provided with a TEC groove 12, the TEC groove 12 is matched with the TEC22 in size, and the TEC22 is arranged in the TEC groove 12; when the first V-groove 31 is used for arranging an emission end optical fiber, and the second V-groove 32 and the third V-groove 33 are used for arranging a receiving end optical fiber, the TEC groove 12 is arranged at a front position of the optical fiber array 3, the TEC22 is arranged in the TEC groove 12, the laser 21 and the lens 23 are attached to 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 for arranging a receiving end optical fiber, the second V-groove 32 and the third V-groove 33 are used for arranging a transmitting end optical fiber, the TEC groove 12 is arranged at two sides of the optical fiber array 3, the TEC22 is arranged in the TEC groove 12, the laser 21 and the lens 23 are attached to the TEC22, and the isolator 24 is arranged between the lens 23 and the optical fiber array 3.
In this embodiment, since the receiving end optical fiber may be disposed on only one or two plates 35, only the plate 35 on which the receiving end optical fiber is disposed needs to be provided with the second inclined angle 39 toward the end surface of the PD4, and the plate 35 not provided with the transmitting end optical fiber does not need to be provided with the second inclined angle 39, and the second inclined angle 39 is formed by grinding.
In order to prevent the entire optical fiber array 3 from moving due to the stress of the optical fibers, the entire optical fiber array 3 needs to be fixed on the substrate 1, and therefore the present embodiment also relates to the following design:
the optical fiber array 3 is disposed on the substrate 1, and specifically includes:
the substrate 1 is provided with an optical fiber array limiting groove 11 matched with the optical fiber array 3 and used for fixedly mounting the optical fiber array 3 and preventing the optical fiber array 3 from displacing on the substrate 1.
After the optical fiber array 3 is arranged in the optical fiber array limiting groove 11, the optical fiber array 3 and the substrate 1 are fixed through glue water solidification, and the problem that a light path fails due to movement of the optical fiber array 3 is solved.
Further, in order to reduce the stress caused by the whole optical fiber, the optical fiber is fixed in a partitioned manner in this embodiment, so that the stress caused by the optical fiber is further absorbed.
As shown in fig. 14 and 15, an optical fiber stopper 5 is further disposed on the substrate 1, and the optical fiber stopper 5 is located at a back position of the optical fiber array 3 and is used for partitioning and fixing the transmitting end optical fiber and the receiving end optical fiber.
The optical fiber limiting block 5 is at least provided with four bosses, a partition is arranged between every two bosses, at least three partitions are guaranteed to exist on one optical fiber limiting block 5 and are respectively used for fixing and limiting the optical fiber of the first V-shaped groove 31, the optical fiber of the second V-shaped groove 32 and the optical fiber of the third V-shaped groove 33, the optical fibers are arranged and arranged in different partitions, and the partitions are filled with glue, so that the optical fibers in the partitions are limited and fixed, and the stress of the optical fibers is further reduced.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. An optical fiber array is characterized in that a first V-shaped groove (31) with a first preset number is formed in the middle of the inside of the optical fiber array (3), a second V-shaped groove (32) with a second preset number is formed in one side of the inside of the optical fiber array (3), a third V-shaped groove (33) with a second preset number is formed in the other side of the inside of the optical fiber array (3), and the first V-shaped groove (31), the second V-shaped groove (32) and the third V-shaped groove (33) are used for accommodating a transmitting end optical fiber or a receiving end optical fiber respectively;
the first V-shaped groove (31) is led in straight from the front end face of the optical fiber array (3) and penetrates out of the back end face of the optical fiber array (3);
the second V-shaped groove (32) and the third V-shaped groove (33) are introduced from the back end face of the optical fiber array (3) and respectively penetrate out from the two side end faces of the optical fiber array (3) after being turned inside the optical fiber array (3);
when the first V-shaped groove (31) is provided with a transmitting end optical fiber, and the second V-shaped groove (32) and the third V-shaped groove (33) are provided with a receiving end optical fiber, the front position of the optical fiber array (3) is used for being coupled with the laser assembly (2), and the two side positions of the optical fiber array (3) are used for being coupled with the PD (4);
when the first V-shaped groove (31) is provided with a receiving end optical fiber, and the second V-shaped groove (32) and the third V-shaped groove (33) are provided with a transmitting end optical fiber, the two side positions of the optical fiber array (3) are used for being coupled with the laser assembly (2), and the front position of the optical fiber array (3) is used for being coupled with the PD (4).
2. 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).
3. Optical fiber array according to claim 2, wherein 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), in particular comprising:
the optical fiber array (3) comprises a top cover (34) and three stacked plates (35);
the first V-shaped groove (31), the second V-shaped groove (32) and the third V-shaped groove (33) are respectively arranged on any one plate (35);
the top cover (34) covers the upper end of the plate (35) on the uppermost layer, is used for protecting the optical fibers in the V-shaped groove on the plate (35) on the uppermost end, and limits the optical fibers.
4. Optical fiber array according to claim 2, wherein 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), in particular comprising:
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) with different heights, the three steps are respectively positioned at the middle position and two side positions of the upper end of the base (37), the step (371) at the middle position is provided with the first V groove (31), and the upper ends of the steps (371) at the two side positions are provided with the second V groove (32) or the third V groove (33);
the cover plate (36) is provided with three table tops with different heights, the three table tops are respectively positioned in the middle position and two side positions of the upper end of the cover plate (36), and each table top is correspondingly arranged above the corresponding step (371).
5. Optical fiber array according to claim 1, wherein the end face of the optical fiber array (3) facing the laser assembly (2) is provided with a first inclined slope (38) with a bottom end facing inwards and a degree greater than or equal to 8 degrees for preventing reflected light from affecting the laser assembly (2).
6. The optical fiber array according to claim 1, wherein the optical fiber array (3) faces an end face of the PD (4) and is provided with a second inclined slope (39) with an upper end facing inwards and an angle of 42 degrees or more, so as to ensure that the optical signal inside the receiving end optical fiber enters the PD (4) after being reflected by the end face of the second inclined slope (39).
7. An optical assembly comprising a substrate (1), a laser assembly (2), a fiber array (3) according to any one of claims 1 to 6 and a PD (4); the optical fiber array (3) is arranged on the substrate (1);
when the first V-shaped groove (31) is provided with an emitting end optical fiber, and the second V-shaped groove (32) and the third V-shaped groove (33) are provided with a receiving end optical fiber, the laser assembly (2) is arranged at the front position of an optical fiber array (3) on the substrate (1), is opposite to the emitting end optical fiber and is used for emitting optical signals to the emitting end optical fiber, and the PDs (4) are arranged at the two side positions of the optical fiber array (3) on the substrate (1), are butted with the receiving end optical fiber and are used for receiving the optical signals;
when the first V-shaped groove (31) is provided with a receiving end optical fiber, and the second V-shaped groove (32) and the third V-shaped groove (33) are provided with a transmitting end optical fiber, the laser assembly (2) is arranged at the positions of the two sides of the optical fiber array (3) on the substrate (1) and is opposite to the transmitting end optical fiber, and is used for transmitting optical signals to the transmitting end optical fiber, and the PD (4) is arranged at the front position of the optical fiber array (3) on the substrate (1), is in butt joint with the receiving end optical fiber, and is used for receiving the optical signals.
8. The fiber array assembly of claim 7, wherein 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 through the TEC (22), and the lens (23) is arranged on the TEC (22) and is opposite to the light path of the laser (21);
the isolator (24) is arranged on the substrate (1), is positioned between the lens (23) and the optical fiber array (3), is positioned on an optical path of the laser (21), and is used for preventing an optical signal from being reflected back to the laser (21).
9. The optical fiber array assembly of claim 7, wherein a fiber stopper (5) is further disposed on the substrate (1), and the fiber stopper (5) is located at a back position of the optical fiber array (3) for partitioning and fixing the transmitting end optical fiber and the receiving end optical fiber.
10. The optical fiber array assembly according to claim 7, wherein the optical fiber array (3) is disposed on the substrate (1), and specifically comprises:
the optical fiber array fixing device is characterized in that an optical fiber array limiting groove (11) matched with the optical fiber array (3) is formed in the substrate (1) and used for fixedly mounting the optical fiber array (3) and preventing the optical fiber array (3) from displacing on the substrate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310000750.8A CN115933075A (en) | 2023-01-03 | 2023-01-03 | Optical fiber array and optical assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310000750.8A CN115933075A (en) | 2023-01-03 | 2023-01-03 | Optical fiber array and optical assembly |
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| Publication Number | Publication Date |
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| CN115933075A true CN115933075A (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310000750.8A Pending CN115933075A (en) | 2023-01-03 | 2023-01-03 | Optical fiber array and optical assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116931200A (en) * | 2023-09-19 | 2023-10-24 | 武汉钧恒科技有限公司 | 400G DR4 optical device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116931200A (en) * | 2023-09-19 | 2023-10-24 | 武汉钧恒科技有限公司 | 400G DR4 optical device |
| CN116931200B (en) * | 2023-09-19 | 2023-12-12 | 武汉钧恒科技有限公司 | 400G DR4 optical device |
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