CN211627878U - Miniature optical fiber array and optical device - Google Patents
Miniature optical fiber array and optical device Download PDFInfo
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- CN211627878U CN211627878U CN202020517923.5U CN202020517923U CN211627878U CN 211627878 U CN211627878 U CN 211627878U CN 202020517923 U CN202020517923 U CN 202020517923U CN 211627878 U CN211627878 U CN 211627878U
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Abstract
The embodiment of the utility model discloses a miniature optical fiber array and an optical device, wherein the miniature optical fiber array comprises a substrate, a cover plate and a plurality of optical fibers; a plurality of groove structures are formed on the surface of the substrate, the groove structures correspond to the optical fibers one by one, and the optical fibers are arranged in the groove structures; a plurality of the groove structures are arranged along a first direction, each groove structure extends along a second direction, and the second direction is intersected with the first direction; along the second direction, the length L of the substrate is more than or equal to 3mm and less than or equal to 6 mm. By adopting the technical scheme, the length L of the substrate in the extending direction of the groove is less than or equal to 3mm and less than or equal to 6mm, the structure of the micro optical fiber array is small and exquisite and easy to position while various performances of the optical fiber array are met, the development trend of miniaturization of the optical fiber array is met, the capacity expansion requirement of an optical device applying the micro optical fiber array is increased, and the development trend of high integration level and large capacity of the optical device is met.
Description
Technical Field
The embodiment of the utility model provides a relate to fiber array technical field, especially, set up a miniature fiber array and optical device.
Background
At present, with the rapid development of communication technology and the rapid increase of practical application, the research of large-capacity optical fiber communication systems has great application value. As the demand for long distance information transmission becomes greater, optical fibers are increasingly used.
The optical fiber array is widely applied to optical devices, and corresponding optical splitters with different branch ratios of 1:4, 1:8, 1:16, 1:32 and the like can be manufactured by using optical splitter chips and optical fiber arrays with different channels. However, the structure of the optical fiber array in the prior art is large, and the miniaturization development trend of the optical fiber array is not met; meanwhile, the overall structure of the optical device integrated with the optical fiber array is larger, and the development trend of realizing high integration level of the optical device is not facilitated, so that the further capacity expansion requirement of the optical device is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a miniature fiber array and optical device solves the great fiber array size among the prior art, is unfavorable for realizing the technical problem of optical device dilatation demand.
The embodiment of the utility model provides a miniature optical fiber array, which comprises a substrate, a cover plate and a plurality of optical fibers;
a plurality of groove structures are formed on the surface of the substrate, the groove structures correspond to the optical fibers one by one, and the optical fibers are arranged in the groove structures;
a plurality of the groove structures are arranged along a first direction, each groove structure extends along a second direction, and the second direction is intersected with the first direction;
along the second direction, the length L of the substrate is more than or equal to 3mm and less than or equal to 6 mm.
Optionally, the substrate comprises a first substrate section, a second substrate section and a connection connecting between the first substrate section and the second substrate section; a height of the first substrate subsection being greater than a height of the second substrate subsection in a third direction; the third direction is perpendicular to the surface of the substrate;
the groove structure is arranged on the surface of the first substrate subsection.
Optionally, the optical fiber includes a first optical fiber subsection and a second optical fiber subsection, the first optical fiber subsection includes a first fiber core, the second optical fiber subsection includes a second fiber core and a coating layer sleeved on an outer surface of the second fiber core, and the first fiber core is connected with the second fiber core;
a portion of the first optical fiber section is disposed within the groove structure, a remaining portion of the first optical fiber section is disposed on the second substrate section, and a portion of the second optical fiber section is disposed on the second substrate section.
Optionally, the length of the first optical fiber subsection is greater than the length of the first substrate subsection and less than the length of the substrate along the second direction.
Optionally, in the third direction, a distance from the center of the first core to the bottom of the groove structure is the same as a distance from the center of the second core to the surface of the second substrate subsection.
Optionally, in a third direction, a sum of thicknesses of the substrate and the cover plate is less than or equal to 1.5 mm; the third direction is perpendicular to the surface of the substrate.
Optionally, the cross-sectional shape of the groove structure includes at least one of a V-shape, a U-shape, a trapezoid shape, and a rectangular shape.
Optionally, along the third direction, the groove depth of the groove structure is smaller than the thickness of the substrate; the third direction is perpendicular to the surface of the substrate.
Optionally, the micro optical fiber array further includes a filling adhesive, and the filling adhesive fills a gap between the groove structure and the optical fiber and a gap between the cover plate and the substrate.
In a second aspect, the present invention provides an optical device, including the micro optical fiber array of the first aspect.
The embodiment of the utility model provides a miniature fiber array and optical device, length L on the recess extending direction through the length that sets up the base plate satisfies 3mm and is less than or equal to L and is less than or equal to 6mm, guarantees the small and exquisite easy location of miniature fiber array structure when satisfying fiber array each item performance, accords with the miniaturized development trend of fiber array, increases the dilatation demand of using this miniature fiber array's optical device, accords with the development trend of optical device high integration, large capacity.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic top view of a micro optical fiber array according to an embodiment of the present invention;
fig. 2 is a schematic side view of a micro fiber array according to an embodiment of the present invention;
fig. 3 is a schematic top view of a substrate and an optical fiber according to an embodiment of the present invention;
fig. 4 is a schematic top view of a substrate according to an embodiment of the present invention;
fig. 5 is a schematic side view of a substrate according to an embodiment of the present invention;
fig. 6 is a schematic front view of a substrate according to an embodiment of the present invention;
fig. 7 is a schematic front view of a micro fiber array according to an embodiment of the present invention;
fig. 8 is an enlarged schematic view of area a of the front view structural schematic provided in fig. 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail through the following embodiments with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, not all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention all fall into the protection scope of the present invention.
Fig. 1 is a schematic diagram of a top view structure of a micro optical fiber array provided in an embodiment of the present invention, fig. 2 is a schematic diagram of a side view structure of a micro optical fiber array provided in an embodiment of the present invention, fig. 3 is a schematic diagram of a top view structure of a substrate and optical fibers provided in an embodiment of the present invention, and as shown in fig. 1 to fig. 3, a micro optical fiber array 10 provided in an embodiment of the present invention includes a substrate 11, a cover plate 12, and a plurality of optical fibers 13; a plurality of groove structures 111 are formed on the surface of the substrate 11, the groove structures 111 correspond to the optical fibers 13 one by one, and the optical fibers 13 are arranged in the groove structures 111; the plurality of groove structures 111 are arranged along a first direction, each groove structure 111 extends along a second direction, and the second direction is intersected with the first direction; along the second direction, the length L of the substrate 11 satisfies that L is more than or equal to 3mm and less than or equal to 6 mm.
Exemplarily, as shown in fig. 1, fig. 2 and fig. 3, the micro fiber array 10 provided by the embodiment of the present invention includes a substrate 11, a cover plate 12 and a plurality of optical fibers 13, wherein the substrate 11 may be a glass substrate, and the cover plate 12 may be a glass cover plate, and the embodiment of the present invention does not limit the material of the substrate 11 and the cover plate 12. Further, a plurality of groove structures 111 are formed on a surface of the substrate 11 facing the cover 12, the groove structures 111 are arranged along a first direction (X direction shown in the figure), each groove structure 111 extends along a second direction (Y direction shown in the figure), and an optical fiber 13 is disposed in each groove structure 11, so that the substrate 11, the cover 12 and the optical fibers 13 are packaged to obtain an optical fiber array. Furthermore, the embodiment of the present invention provides an extension length L of the substrate 11 in the second direction, which is less than or equal to 3mm and less than or equal to L and less than or equal to 6mm, for example, the extension length L of the substrate 11 in the second direction can be 5mm or 6mm, so as to obtain the micro optical fiber array 10 with a smaller extension length in the second direction.
To sum up, the embodiment of the utility model provides a miniature fiber array satisfies 3mm through the length L who sets up the base plate on the recess extending direction and is less than or equal to L and is less than or equal to 6mm, guarantees the small and exquisite easy location of miniature fiber array structure when satisfying fiber array each item performance, accords with the miniaturized development trend of fiber array, increases the dilatation demand of using this miniature fiber array's optical device, accords with the development trend of optical device high integration, large capacity.
Optionally, fig. 4 is a schematic top view structure diagram of a substrate provided in an embodiment of the present invention, fig. 5 is a schematic side view structure diagram of a substrate provided in an embodiment of the present invention, fig. 6 is a schematic front view structure diagram of a substrate provided in an embodiment of the present invention, as shown in fig. 4-6, a substrate 11 provided in an embodiment of the present invention includes a first substrate subsection 11a, a second substrate subsection 11b, and a connecting portion 11c connecting the first substrate subsection 11a and the second substrate subsection 11 b; in the third direction, the height of the first substrate subsection 11a is greater than the height of the second substrate subsection 11 b; the third direction is perpendicular to the surface of the substrate 11; the groove structure 111 is disposed on the surface of the first substrate subsection 11 a.
Illustratively, the third direction may be a direction perpendicular to the surface of the substrate 11, such as the Z direction shown in the figures, and the upper surface of the substrate 11 may have different heights, and the height of the first substrate subsection 11a is greater than the height of the second substrate subsection 11b in the direction perpendicular to the substrate 10, and the connection portion 11c connecting the first substrate subsection 11a and the second substrate subsection 11b may be an inclined surface. Alternatively, the extension length of the first substrate subsection 11a and the extension length of the second substrate subsection 11b along the second direction (Y direction as shown in the figure) may be the same or different, which is not limited by the embodiment of the present invention, and fig. 4 and 5 only illustrate the case where the extension length of the first substrate subsection 11a is greater than the extension length of the second substrate subsection 11b along the second direction.
Optionally, with continued reference to fig. 3, the optical fiber 13 may include a first fiber subsection 13a and a second fiber subsection 13b, the first fiber subsection 13a includes a first fiber core, the second fiber subsection 13b includes a second fiber core and a coating layer sleeved on an outer surface of the second fiber core, and the first fiber core is connected with the second fiber core; wherein a portion of the first optical fiber subsection 13a is disposed within the groove structure 111, a remaining portion of the first optical fiber subsection 13a is disposed on the second substrate subsection 11b, and a portion of the second optical fiber subsection 13b is disposed on the second substrate subsection 11 b.
For example, as shown in fig. 3, the first optical fiber subsection 13a may be a portion where the coating is stripped off and only the first core is left, the second optical fiber subsection 13b may be a portion including the second core and the coating covering the second core, and the first core and the second core may be the same core. Part of the first optical fiber subsection 13a is directly arranged in the groove structure 111, the rest of the first optical fiber subsection 13a is arranged on the second substrate subsection 11b, part of the second optical fiber subsection 13b is arranged on the second substrate subsection 11b, and the rest of the second optical fiber subsection 13b is arranged outside the substrate 11, so that the first optical fiber subsection 13a comprises a part exceeding the length of the groove structure 111, the length of the first optical fiber subsection 13a is larger than that of the first substrate subsection 11a and smaller than that of the substrate, and the first fiber core is completely arranged in the groove structure 111.
Optionally, in the third direction, a distance from the center of the first core to the bottom of the groove structure is the same as a distance from the center of the second core to the surface of the second substrate subsection.
Exemplarily, the first optical fiber subsection 13a with the coating stripped off is disposed in the groove structure 111, the second optical fiber subsection 13b with the coating is disposed on the second substrate subsection 11b, the groove structure 111 is disposed on the first substrate subsection 11a, and the height of the first substrate subsection 11a is higher than that of the second substrate subsection 11b, at this time, the arrangement is along the third direction, the distance from the center of the first fiber core to the bottom of the groove structure is the same as the distance from the center of the second fiber core to the surface of the second substrate subsection, so that it can be ensured that the first fiber core and the second fiber core have the same height, so that the whole optical fiber is at the same height, no bending occurs, the position of the optical fiber is ensured to be stable, and the optical signal transmission is stable.
Optionally, with continued reference to fig. 2, in a third direction (the Z direction as shown in the figure), the sum of the thicknesses of the base plate 11 and the cover plate 12 is less than or equal to 1.5 mm; the third direction is perpendicular to the surface of the substrate 11.
Illustratively, the sum of the thicknesses of the base plate 11 and the cover plate 12 in the prior art is typically 2.5 mm. The embodiment of the utility model provides a third direction is followed in the setting, the thickness sum of base plate 11 and apron 12 is less than or equal to 1.5mm, the thickness of the thickness sum of base plate 11 and apron 12 reduces on a large scale, guarantee that miniature fiber array has less thickness in the third direction, be favorable to realizing the frivolous and miniaturized design of miniature fiber array, guarantee the small and exquisite easy location of miniature fiber array structure when satisfying each item performance of fiber array, accord with the miniaturized development trend of fiber array, increase the dilatation demand of using this miniature fiber array's optical device, accord with the high integration of optical device, the development trend of large capacity.
Optionally, fig. 7 is a front view structure diagram of a micro optical fiber array provided by an embodiment of the present invention, fig. 8 is an enlarged schematic diagram of an area a in the front view structure diagram provided by fig. 7, as shown in fig. 7 and fig. 8, in the micro optical fiber array provided by an embodiment of the present invention, a sectional shape of the groove structure 111 may include at least one of a V-shape, a U-shape, a trapezoid and a rectangle, the embodiment of the present invention does not limit the sectional shape of the groove structure 111, and the sectional shape of the groove structure 111 is only illustrated as the V-shape in the drawing.
Further, when groove structure 111's cross sectional shape is the V type, the contained angle of the angular bisector of two sides and groove structure 111's the V-arrangement angle of groove structure 111 can be 30, also can be other angles, the embodiment of the utility model provides a do not prescribe a limit to this.
Optionally, as shown in fig. 7, the groove structure 111 has a groove depth smaller than the thickness of the substrate 11 along a third direction (the Z direction shown in the figure), wherein the third direction is perpendicular to the surface of the substrate 11, so that the groove structure 111 is not cut through the substrate 11, and the optical fibers disposed in the groove structure 111 are not directly exposed to the outside, so that the protection effect of the substrate 11 on the optical fibers 13 can be enhanced.
Optionally, the embodiment of the utility model provides a miniature fiber array can also include the filling adhesive (not shown in the figure), and the filling adhesive fills the clearance between groove structure 111 and optic fibre 13 and the clearance between apron 12 and the base plate 11, guarantees miniature fiber array 10 stable in structure, can not cause the position between the different devices to change because of external influence in the transportation, guarantees miniature fiber array 10 and normally works.
Optionally, as shown in fig. 3 or fig. 4, in the micro optical fiber array provided in the embodiment of the present invention, along the first direction (X direction shown in the figure), the distance between any two adjacent groove structures 111 is the same, so that it is ensured that the distance between two adjacent optical fibers 13 located in the groove structures 111 is the same, the influence of the optical signals transmitted by the optical fibers on each other is the same, and the stability of the optical signals transmitted by the micro optical fiber array is ensured.
Optionally, the distance between any two adjacent groove structures 111 may be 127 μm, or 250 μm, or 500 μm, according to the number of signals to be transmitted, which is not limited in the embodiment of the present invention.
Based on the same inventive concept, the following is a brief description of the fabrication process of the micro-fiber array:
firstly, preparing a groove structure on a substrate at a certain interval;
cleaning the substrate with the groove structure;
peeling off a coating layer part with a certain length from an optical fiber to obtain a first optical fiber subsection without a coating layer and a second optical fiber subsection coated with the coating layer;
placing the optical fiber into the groove structure through a specific tool;
placing a cover plate gland for fixing and injecting filling glue to fill the gap between the groove structure and the optical fiber and the gap between the cover plate and the substrate;
grinding and polishing the end face of the prepared micro optical fiber array;
inspecting the ground end face;
and testing the polishing angle to ensure good connection relation between the micro optical fiber array and other optical elements connected with the micro optical fiber array.
It should be noted that the embodiment of the utility model provides a miniature fiber array compares the structure of the fiber array several times small and exquisite among the prior art, need use the specific frock that matches with it when putting into groove structure with optic fibre through the frock in, simultaneously in the grinding and polishing processing procedure, also need use the grinding structure and the polishing structure that match with it.
Based on same utility model concept, the embodiment of the utility model provides an optical device is still provided, include the embodiment of the utility model provides a miniature fiber array, possess corresponding beneficial effect, no longer describe here. When the length L of the substrate in the extending direction of the groove is equal to or less than 3mm and equal to or less than 6mm, under the condition of the same optical device volume, a plurality of micro optical fiber array structures can be arranged in the optical device simultaneously, so that the capacity expansion requirement of the optical device can be met, and the development trend of high integration and large capacity of the optical device is met.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, but that the features of the various embodiments of the invention may be partially or fully coupled to each other or combined and may cooperate with each other and be technically driven in various ways. Numerous obvious variations, rearrangements, combinations, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A micro optical fiber array is characterized by comprising a substrate, a cover plate and a plurality of optical fibers;
a plurality of groove structures are formed on the surface of the substrate, the groove structures correspond to the optical fibers one by one, and the optical fibers are arranged in the groove structures;
a plurality of the groove structures are arranged along a first direction, each groove structure extends along a second direction, and the second direction is intersected with the first direction;
along the second direction, the length L of the substrate is more than or equal to 3mm and less than or equal to 6 mm.
2. The array of micro optical fibers of claim 1, wherein the substrate comprises a first substrate section, a second substrate section, and a connection connecting between the first substrate section and the second substrate section; a height of the first substrate subsection being greater than a height of the second substrate subsection in a third direction; the third direction is perpendicular to the surface of the substrate;
the groove structure is arranged on the surface of the first substrate subsection.
3. The array of micro-fibers of claim 2, wherein the optical fibers comprise a first fiber segment and a second fiber segment, the first fiber segment comprising a first core, the second fiber segment comprising a second core and a coating layer disposed on an outer surface of the second core, the first core and the second core being connected;
a portion of the first optical fiber section is disposed within the groove structure, a remaining portion of the first optical fiber section is disposed on the second substrate section, and a portion of the second optical fiber section is disposed on the second substrate section.
4. The array of micro optical fibers of claim 3, wherein along the second direction, the length of the first optical fiber section is greater than the length of the first substrate section and less than the length of the substrate.
5. The micro optical fiber array according to claim 3, wherein a distance from a center of the first core to a bottom of the groove structure is the same as a distance from a center of the second core to a surface of the second substrate subsection in the third direction.
6. The array of micro optical fibers of claim 1, wherein, in a third direction, a sum of thicknesses of the substrate and the cover plate is less than or equal to 1.5 mm; the third direction is perpendicular to the surface of the substrate.
7. The array of micro-fibers of claim 1, wherein the groove structure has a cross-sectional shape comprising at least one of a V-shape, a U-shape, a trapezoid shape, and a rectangular shape.
8. The array of micro optical fibers of claim 1, wherein, along the third direction, the groove structure has a groove depth less than the thickness of the substrate; the third direction is perpendicular to the surface of the substrate.
9. The array of micro optical fibers of claim 1, further comprising a filler glue filling a gap between the groove structure and the optical fibers and a gap between the cover plate and the substrate.
10. An optical device comprising an array of micro-fibers according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020517923.5U CN211627878U (en) | 2020-04-10 | 2020-04-10 | Miniature optical fiber array and optical device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020517923.5U CN211627878U (en) | 2020-04-10 | 2020-04-10 | Miniature optical fiber array and optical device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112540424A (en) * | 2020-12-07 | 2021-03-23 | 中国科学院半导体研究所 | Optical fiber array and manufacturing method thereof |
| CN114578488A (en) * | 2020-12-01 | 2022-06-03 | 深南电路股份有限公司 | Optical fiber circuit board unit, optical transmission device, and photoelectric hybrid circuit board |
-
2020
- 2020-04-10 CN CN202020517923.5U patent/CN211627878U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114578488A (en) * | 2020-12-01 | 2022-06-03 | 深南电路股份有限公司 | Optical fiber circuit board unit, optical transmission device, and photoelectric hybrid circuit board |
| CN114578488B (en) * | 2020-12-01 | 2024-03-12 | 深南电路股份有限公司 | Optical fiber circuit board unit, optical transmission device and photoelectric hybrid circuit board |
| CN112540424A (en) * | 2020-12-07 | 2021-03-23 | 中国科学院半导体研究所 | Optical fiber array and manufacturing method thereof |
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