A multi-channel signal transmission silicon optical module for preventing crosstalk

Abstract

The present invention discloses a multi-channel signal transmission silicon optical module for preventing crosstalk, which includes an optical fiber array and a silicon optical chip. The optical fiber array includes a substrate, a cover plate and optical fibers. The upper surface of the substrate is provided with eight fiber channels arranged side by side. The input ends and output ends of the eight fiber channels are arranged at the same spacing. The two fiber channels located in the center are the first fiber channels, and the other fiber channels are the second fiber channels. The first fiber channels are straight channels, and the second fiber channels are curved channels. The optical fiber array can not only meet the needs of a silicon optical chip with a high integration degree and a small-spacing light output port array, but also increase the spacing between the optical fibers during the signal transmission process of the optical fibers in adjacent fiber channels, effectively reducing the signal transmission crosstalk between multiple optical fibers in the optical fiber array, and further realizing the crosstalk prevention of the multi-channel signal transmission silicon optical module.

Description

Technical Field

[0001] The present invention relates to the field of optical communication, and particularly to a multi-channel signal transmission silicon optical module with anti-crosstalk. Background Art

[0002] With the rapid growth of business requirements such as data transmission and cloud computing, data centers with efficient server collaboration and data processing capabilities are carrying the rapidly growing demand for the total amount and density of information. Therefore, as the core functional devices for optical interconnection and optical switching inside data centers, high-speed optical modules are inevitably facing the replacement from low speed to high speed.

[0003] Currently, high-speed optical modules are not limited to single-channel signal transmission, which poses new challenges to the overall design and packaging of optical modules. To solve this problem, in related technologies, a silicon optical module is constructed through a scheme of multi-channel parallel signals inside a fiber array or a multi-core optical fiber, and different-channel signals are transmitted in different optical fibers to achieve the purpose of signal separation.

[0004] A fiber array (FA) is an array formed by installing a bundle of optical fibers or an optical fiber ribbon on a substrate with V-grooves at a specified interval. In the processing process of the fiber array, the bare optical fiber part after removing the optical fiber coating is placed in the V-groove, a pressure component presses this part of the optical fiber, an adhesive is added for bonding, and finally the surface is ground and polished to the required precision.

[0005] In traditional silicon optical module solutions, the light output ports of silicon optical chips are usually arranged in a side-by-side array. When the array pitch of the light output ports of the silicon optical chip is set to be small, arranging the fiber array at the same pitch may cause the problem of excessive crosstalk between optical fibers, thus unable to guarantee the quality of multi-channel signals inside the silicon optical module. However, a small light port pitch is an inevitable choice to improve the integration of silicon optical chips. Therefore, how to reduce the crosstalk between multi-channel optical fibers in the fiber array is a problem that must be faced in the multi-channel signal transmission silicon optical module solution. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem in the prior art that in order to improve the integration of silicon optical chips, the array pitch of the light output ports of the silicon optical chip is set to be small, and arranging the fiber array at the same pitch will cause excessive crosstalk between optical fibers and unable to guarantee the quality of multi-channel signals inside the silicon optical module, and to provide a multi-channel signal transmission silicon optical module with anti-crosstalk.

[0007] To achieve the above invention purpose, the present invention provides the following technical solutions:

[0008] A multi-channel signal transmission silicon optical module for preventing crosstalk, comprising an optical fiber array and a silicon optical chip, characterized in that the optical fiber array includes a substrate, a cover plate and optical fibers. The upper surface of the substrate is provided with eight fiber channels arranged side by side. The input ends and output ends of the eight fiber channels are arranged at the same spacing. The two fiber channels located in the center are the first fiber channels, and the other fiber channels are the second fiber channels. The first fiber channels are straight channels, and the second fiber channels are curved channels. Each fiber channel is provided with an optical fiber. The cover plate fixes the optical fiber in the fiber channel by pressing the optical fiber. The optical fiber array is coupled with the output optical waveguide of the silicon optical chip.

[0009] A multi-channel signal transmission silicon optical module for preventing crosstalk according to the present invention includes an optical fiber array and a silicon optical chip. The optical fiber array includes a substrate. The upper surface of the substrate is provided with eight fiber channels arranged side by side. The fiber channels are used to accommodate and arrange optical fibers. The input ends of the eight fiber channels are arranged at equal distances, and the input ends are coupled with the output optical waveguides of the silicon optical chips. The optical fiber array can adapt to silicon optical chips with a small spacing of the output optical port array. The output ends of the eight fiber channels are arranged at equal distances and the spacing is the same as that of the input ends, ensuring that the output ends can be connected to the connectors at the optical port end of the optical module. The optical fiber array can realize the coupling between the silicon optical chip and the optical port. The two fiber channels located in the center are the first fiber channels, and the first fiber channels are straight channels. The other fiber channels are the second fiber channels, and the second fiber channels are curved channels. Each fiber channel is provided with an optical fiber. The cover plate fixes the optical fiber in the fiber channel by pressing the optical fiber. The distance between the second fiber channels and the first fiber channels and between the second fiber channels is larger than the spacing between the input ends and output ends of the fiber channels, increasing the spacing between adjacent fiber channels and effectively reducing the signal transmission crosstalk between multiple optical fibers. A multi-channel signal transmission silicon optical module for preventing crosstalk according to the present invention includes an optical fiber array. The optical fiber array meets the needs of silicon optical chips with a high integration degree and a small-spacing output optical port array by setting the input ends and output ends of the fiber channels at the same spacing. The optical fiber array divides the fiber channels into the first fiber channels with straight channels and the second fiber channels with curved channels, increasing the spacing between the optical fibers during the signal transmission process of the optical fibers in adjacent fiber channels, effectively reducing the signal transmission crosstalk between multiple optical fibers in the optical fiber array, and further realizing the crosstalk prevention of the multi-channel signal transmission silicon optical module.

[0010] As a preferred embodiment of the present invention, the second optical fiber channels are arc channels and are all minor arcs. The center of each of the second optical fiber channels is located on the side of the second optical fiber channel close to the first optical fiber channel. The second optical fiber channels with such a structure ensure that the distance between the first optical fiber channel and the adjacent second optical fiber channels and the distance between adjacent second optical fiber channels can be greater than the spacing between the input and output ends of the optical fiber channels, effectively reducing the signal crosstalk of the optical fibers in the adjacent optical fiber channels.

[0011] As a preferred solution of the present invention, the arc lengths of the three second optical fiber channels located on the same side of the first optical fiber channel are all different, and the arc lengths of the three second optical fiber channels increase in the direction away from the first optical fiber channel. The second optical fiber channels are arranged in this way, that is, the spacing between adjacent second optical fiber channels increases in the direction away from the first optical fiber channel, which can better reduce the signal crosstalk of the optical fibers in the adjacent optical fiber channels.

[0012] As a preferred solution of the present invention, the two first optical fiber channels are parallel to each other and symmetrical about the symmetry axis, and the three second optical fiber channels on the left side of the first optical fiber channel and the three second optical fiber channels on the right side are symmetrical about the symmetry axis. The optical fiber array thus configured has a simple structure, can reduce the volume of the optical fiber array, is convenient for installation in a silicon photonic module, and is easy to manufacture.

[0013] As a preferred solution of the present invention, the angle between the tangent line of the two end points of the second optical fiber channel and the line connecting the two end points is less than or equal to 45 degrees. That is, the bending radius of the second optical fiber channel is limited to ensure that the optical fiber can achieve smooth bending, avoid large-angle deflection of the optical fiber at the input end and the output end, thereby reducing the optical performance of the optical fiber and affecting signal transmission.

[0014] As a preferred solution of the present invention, two cover plates are included, and the lower surface of the substrate is provided with eight fiber channels arranged side by side. The fiber channels on the upper and lower surfaces are staggered and do not overlap, and each fiber channel on the lower surface is provided with one fiber. The cover plate fixes the fiber in the fiber channel by covering and pressing the fiber. The upper and lower surfaces of the substrate are both provided with eight fiber channels, which is equivalent to combining two eight-channel fiber arrays into one fiber array, thereby improving the integration of the fiber array.

[0015] As a preferred embodiment of the present invention, the eight optical fibers provided on one side of the substrate are TX optical fibers, and the eight optical fibers provided on the other side of the substrate are RX optical fibers. The eight TX optical fibers are respectively coupled to the eight output optical waveguides of the silicon photonics chip, and the eight RX optical fibers are coupled to the multi-channel optical chip through lenses. By integrating the transmitting optical fibers and the receiving optical fibers into the same optical fiber array, the integration degree of the optical fiber array can be improved. When it is applied to a silicon photonics module, only the optical fiber array needs to be coupled once, greatly simplifying the coupling difficulty of the optical fiber array and improving the coupling speed and production capacity of the optical fiber array.

[0016] As a preferred embodiment of the present invention, isolation grooves are provided between each adjacent optical fiber channel, and an optical signal isolation medium is fixedly provided in the isolation grooves. By inserting an isolation medium with a low refractive index and a high absorption coefficient between the optical fiber channels, the leaked optical signals can be absorbed or scattered, thereby suppressing the signal crosstalk between the optical fibers in the adjacent optical fiber channels.

[0017] As a preferred embodiment of the present invention, the optical fiber channels are V-shaped grooves, U-shaped grooves or rectangular grooves, and a refractive index matching glue is filled between the optical fiber channels and the optical fibers. The optical fiber channels arranged in this way can accurately accommodate and position each optical fiber, ensuring the stability and accuracy of the optical fiber position during the packaging process; filling a refractive index matching glue between the optical fiber and the substrate reduces the reflection and scattering losses at the interface between the optical fiber and the substrate, and at the same time further fixes the optical fiber position to prevent the optical fiber from shifting during use.

[0018] As a preferred embodiment of the present invention, the substrate is made of a ceramic material, and the cover plate is made of a glass material. Ceramics have excellent insulation properties, which can effectively avoid electrical interference between different optical fiber channels in the optical fiber array and between the optical fibers and the external environment, ensuring the stability and accuracy of optical signal transmission; ceramics have relatively high hardness and mechanical strength, which can provide effective support and protection for the optical fibers, making them not easily displaced or damaged when subjected to external force impacts, vibrations, etc., enhancing the durability and anti-interference ability of the optical fiber array; the cover plate made of glass material has good optical flatness and mechanical strength, which can not only protect the optical fibers from being polluted and physically damaged by the external environment, but also ensure the normal transmission of optical signals.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. A crosstalk - proof multi - channel signal transmission silicon optical module of the present invention includes an optical fiber array. The input end and output end of the optical fiber channels in the optical fiber array are set to the same pitch to meet the requirements of a silicon optical chip with high integration and a small - pitch light - emitting port array. The optical fiber array divides the optical fiber channels into a first optical fiber channel with a straight channel and a second optical fiber channel with a curved channel, increasing the pitch between the optical fibers during the signal transmission process in adjacent optical fiber channels, effectively reducing the signal transmission crosstalk between multiple optical fibers in the optical fiber array, and thus achieving crosstalk prevention for the multi - channel signal transmission silicon optical module.

[0021] 2. Preferably, in a crosstalk - proof multi - channel signal transmission silicon optical module of the present invention, by integrating the transmitting - end optical fiber and the receiving - end optical fiber into the same optical fiber array, the integration degree of the optical fiber array can be improved. When it is applied to a silicon optical module, the optical fiber array is only coupled once, greatly simplifying the coupling difficulty of the optical fiber array and improving the coupling speed and production capacity of the optical fiber array. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three - dimensional structure schematic diagram of a crosstalk - proof multi - channel signal transmission silicon optical module of the present invention;

[0023] Figure 2 is a side view of a crosstalk - proof multi - channel signal transmission silicon optical module of the present invention;

[0024] Figure 3 is a three - dimensional structure schematic diagram of an embodiment of the optical fiber array of the present invention;

[0025] Figure 4 is a top view of an embodiment of the optical fiber array of the present invention;

[0026] Figure 5 is a front view of an embodiment of the optical fiber array of the present invention;

[0027] Figure 6 is a three - dimensional structure schematic diagram of another embodiment of the optical fiber array of the present invention;

[0028] Figure 7 is a top view of another embodiment of the optical fiber array of the present invention;

[0029] Figure 8 is a front view of another embodiment of the optical fiber array of the present invention.

[0030] Reference numerals in the figures: 1 - optical fiber array, 11 - substrate, 111 - optical fiber channel, 112 - first optical fiber channel, 113 - second optical fiber channel, 114 - isolation groove, 12 - cover plate, 13 - optical fiber, 2 - silicon optical chip, 3 - multi - channel optical chip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present invention will be further described in detail below in combination with test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention. Embodiment

[0032] Embodiment 1, as Figures 1 to 8 shown, a multi-channel signal transmission silicon optical module for preventing crosstalk includes an optical fiber array 1 and a silicon optical chip 2. The optical fiber array 1 is used to realize the coupling between the silicon optical chip 2 and the optical module optical port end connector. The optical fiber array 1 includes a substrate 11 and optical fibers 13. The upper surface of the substrate 11 is provided with eight fiber channels 111 arranged side by side. The fiber channels 111 are used to accommodate and arrange the optical fibers 13. The input ends of the eight fiber channels 111 are arranged at equal intervals and are coupled to the output optical waveguides of the silicon optical chip 2. The optical fiber array 1 can adapt to the silicon optical chip 2 with a smaller output optical port array pitch. The output ends of the eight fiber channels 111 are arranged at equal intervals and the interval is the same as that of the input ends, ensuring that the output ends can be connected to the connector at the optical port end of the optical module. The optical fiber array 1 can realize the coupling between the silicon optical chip 2 and the optical port. The two fiber channels 111 located in the center are the first fiber channels 112, and the other fiber channels 111 are the second fiber channels 113. The first fiber channels 112 are straight channels, and the second fiber channels 113 are curved channels. The distance between the second fiber channels 113 and the first fiber channels 111 and between the second fiber channels 113 is larger than the interval between the input end and the output end of the fiber channels 111, increasing the interval between adjacent fiber channels 111 and effectively reducing the signal transmission crosstalk between multiple optical fibers. The optical fiber array 1 further includes a cover plate 12. Each fiber channel 111 is provided with an optical fiber 13. The cover plate 12 fixes the optical fiber 13 in the fiber channel 111 by pressing the optical fiber 13, protecting the optical fiber 13 from being polluted by the external environment and physically damaged, and ensuring the normal transmission of optical signals.

[0033] Those skilled in the art can understand that the input ends of the fiber channels 111 are coupled to the output optical waveguides of the silicon optical chip. Therefore, the input ends of the fiber channels 111 should be arranged at equal intervals and the same as the arrangement of the output optical waveguides of the silicon optical chip. The output ends of the fiber channels 111 should be coupled to the optical port end of the silicon optical module. Therefore, the output ends of the fiber channels 111 should be arranged at equal intervals and the same as the arrangement of the optical port end of the silicon optical module.

[0034] A multi-channel signal transmission silicon optical module with anti-crosstalk, comprising an optical fiber array 1. The input end and output end of the optical fiber channel of the optical fiber array 1 are set with the same pitch to meet the requirements of a silicon optical chip with high integration and a small-pitch light-emitting port array. The optical fiber array 1 further divides the optical fiber channel 111 into a first optical fiber channel 112 with a straight channel and a second optical fiber channel 113 with a curved channel, increasing the pitch between the optical fibers during the signal transmission process in adjacent optical fiber channels, effectively reducing the signal transmission crosstalk between multiple optical fibers in the optical fiber array 1, and further achieving anti-crosstalk of the multi-channel signal transmission silicon optical module. Embodiment

[0035] Embodiment 2, as Figures 1 to 2 , Figures 6 to 8 shown, on the basis of Embodiment 1, this embodiment has further optimized design. Specifically, in this embodiment, the substrate 11 is made of ceramic material. Ceramic has excellent insulation performance, which can effectively avoid electrical interference between different optical fiber channels in the optical fiber array and between the optical fiber and the external environment, ensuring the stability and accuracy of the optical signal transmission; ceramic has relatively high hardness and mechanical strength, which can provide effective support and protection for the optical fiber, so that when it is subjected to external force impacts, vibrations, etc., it is not easy to shift, damage, etc., enhancing the durability and anti-interference ability of the optical fiber array; the cover plate 12 is made of glass material, and the cover plate 12 is fixed to the substrate 11 by glue or mechanical clamps to fix and protect the optical fiber. The glass cover plate has good optical flatness and mechanical strength, which can not only protect the optical fiber from being polluted and physically damaged by the external environment, but also ensure the normal transmission of optical signals; a single-mode quartz optical fiber with low loss and low refractive index distribution non-uniformity is selected as the optical fiber 13. The core of the optical fiber 13 has a graded refractive index distribution. From the center to the edge of the core, the refractive index gradually decreases. This distribution helps to reduce intermodal dispersion and further reduce signal crosstalk caused by dispersion. The core diameter of the optical fiber 13 is 9 microns, the cladding diameter of the optical fiber 13 is 125 microns, and the numerical aperture is 0.14.

[0036] Furthermore, the optical fiber channel 111 is a V-groove, U-groove or rectangular groove. The optical fiber channel 111 set in this way can accurately accommodate and position each optical fiber 13, ensuring the stability and accuracy of the position of the optical fiber 13 during the encapsulation process. Specifically, in this embodiment, the optical fiber channel 111 is a V-groove. The depth of the V-groove is 50 microns, the width is 130 microns, and the angle is 60 degrees, which can accurately accommodate and position the optical fiber 13. The surface of the V-groove is finely ground and polished, and the roughness is less than 10 nanometers to reduce the scattering loss between the optical fiber 13 and the substrate 11.

[0037] Further, a refractive index matching gel is filled between the optical fiber channel 111 and the optical fiber 13. Filling the refractive index matching gel between the optical fiber 13 and the substrate 11 can reduce the reflection and scattering losses at the interface between the optical fiber 13 and the substrate 11. At the same time, it can further fix the position of the optical fiber 13 and prevent the optical fiber 13 from shifting during use. Specifically, in this embodiment, the refractive index of the refractive index matching gel is between 1.44 and 1.46, and the light transmittance after curing is greater than 98%.

[0038] Further, the second optical fiber channel 113 is an arc channel and all are inferior arcs. The center of each second optical fiber channel 113 is located on the side of the second optical fiber channel 113 close to the first optical fiber channel 112. That is, along the optical signal transmission direction, the second optical fiber channel 113 gradually bends from the input end to the output end. The second optical fiber channel 113 with such a structure ensures that the distance between the first optical fiber channel 112 and the adjacent second optical fiber channel 113 and the distance between the adjacent second optical fiber channels 113 can be greater than the spacing between the input end and the output end of the optical fiber channel, effectively reducing the signal crosstalk of the optical fibers in the adjacent optical fiber channels 111. Specifically, in this embodiment, the spacing between the input end and the output end of the optical fiber channel 111 is 50 microns.

[0039] Further, the arc lengths of the three second optical fiber channels 113 on the same side of the first optical fiber channel 112 are all different, and the arc lengths of the three second optical fiber channels 113 increase in the direction away from the first optical fiber channel 112. That is, the spacing between the adjacent second optical fiber channels 113 is also different. In the direction away from the first optical fiber channel 112, the spacing between the adjacent second optical fiber channels 113 is increasing, which can better reduce the signal crosstalk of the optical fibers in the adjacent optical fiber channels 111.

[0040] Further, the two first optical fiber channels 112 are parallel to each other and symmetric about the axis of symmetry. The three second optical fiber channels 113 on the left side of the first optical fiber channel 112 are symmetric about the axis of symmetry with the three second optical fiber channels 113 on the right side. The optical fiber array arranged in this way has a simple structure, can reduce the volume of the optical fiber array, is convenient to be installed in the silicon optical module, and is convenient for production and manufacturing.

[0041] Those skilled in the art can understand that the optical fiber channel 111 can also be designed in an asymmetric form, so that the optical signals in different channels experience different path lengths during transmission, thereby reducing the coherence between the optical signals and reducing the possibility of crosstalk. The asymmetric optical fiber channel 111 is included in the protection scope of the present invention.

[0042] Further, the angle between the tangent lines at the two endpoints of the second optical fiber channel 113 and the line connecting the two endpoints is less than or equal to 45 degrees. That is, the bending radius of the second optical fiber channel 113 is restricted to ensure that the optical fiber 13 can be bent smoothly, avoiding large-angle deflection of the optical fiber 13 at the input end and the output end, which reduces the optical performance of the optical fiber and thus affects signal transmission.

[0043] Further, an isolation groove 114 is provided between each adjacent optical fiber channel 111, and an optical signal isolation medium is fixedly arranged in the isolation groove 114. By inserting an isolation medium with a low refractive index and a high absorption coefficient between the optical fiber channels 111, the leaked optical signals can be absorbed or scattered, thereby suppressing signal crosstalk between the optical fibers in the adjacent optical fiber channels. Specifically, in this embodiment, the optical signal isolation medium is graphene oxide. Embodiment

[0044] Embodiment 3, as Figures 3 to 5 shown, on the basis of Embodiment 1, this embodiment has further optimized design. Specifically, in this embodiment, the substrate 11 is made of glass material, the cover plate 12 is made of glass material, the optical fiber 13 is a low-loss and high-stability quartz optical fiber, the refractive index of the core is about 1.46, and the optical fiber channel 111 is a rectangular groove.

[0045] Further, in this embodiment, the second optical fiber channel 113 is an arc channel and all are minor arcs. The center of each second optical fiber channel 113 is located on the side of the second optical fiber channel 113 close to the first optical fiber channel 112, and the arc lengths of each second optical fiber channel 113 are the same. Embodiment

[0046] Embodiment 4, as Figures 1 to 8 shown, on the basis of Embodiment 2 or Embodiment 3, this embodiment has further optimized design. Specifically, in this embodiment, it includes two cover plates 12. The lower surface of the substrate 11 is provided with eight optical fiber channels 111 arranged side by side. The areas of the optical fiber channels 111 opened on the upper and lower surfaces are offset and do not overlap. Each optical fiber channel 111 on the lower surface is provided with an optical fiber 13, and the cover plate 12 fixes the optical fiber 13 in the optical fiber channel 111 by pressing the optical fiber 13. The upper and lower surfaces of the substrate 11 are both provided with eight optical fiber channels 111, which is equivalent to integrating two eight-channel optical fiber arrays into one optical fiber array, improving the integration degree of the optical fiber array.

[0047] Further, the eight optical fibers 13 provided on one side of the substrate 11 are TX optical fibers, and the eight optical fibers 13 provided on the other side of the substrate 11 are RX optical fibers. The eight TX optical fibers are respectively coupled to the eight output optical waveguides of the silicon photonics chip 2, and the eight RX optical fibers are coupled to a multi-channel optical chip through lenses.

[0048] Those skilled in the art can understand that a traditional 800G DR8 silicon photonics module is equipped with one optical fiber array for transmission (TX) and one optical fiber array for reception (RX). Then, the number of optical fiber arrays in the 800G DR8 silicon photonics module is at least two, resulting in difficult coupling. In this embodiment, by integrating the transmitting optical fibers (TX optical fibers) and the receiving optical fibers (RX optical fibers) into the same optical fiber array, the integration degree of the optical fiber array 1 can be improved. When it is applied to a silicon photonics module, only one coupling of the optical fiber array is required, greatly simplifying the coupling difficulty of the optical fiber array and improving the coupling speed and production capacity of the optical fiber array.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crosstalk-proof multi-channel signal transmission silicon photonic module, comprising an optical fiber array (1) and a silicon photonic chip (2), characterized in that: The optical fiber array (1) comprises a substrate (11), a cover plate (12) and an optical fiber (13); the upper surface of the substrate (11) is provided with eight optical fiber channels (111) arranged side by side; the input ends and output ends of the eight optical fiber channels (111) are arranged at the same interval; the two optical fiber channels (111) located in the center are first optical fiber channels (112); the other optical fiber channels (111) are second optical fiber channels (113); the first optical fiber channels (112) are straight channels; the second optical fiber channels (113) are curved channels; one optical fiber (13) is arranged in each optical fiber channel (111); the cover plate (12) fixes the optical fiber (13) in the optical fiber channel (111) by covering and pressing the optical fiber (13); the optical fiber array (1) is coupled to the light output waveguide of the silicon photonic chip (2); The second optical fiber channels (113) are arc channels and are all minor arcs, and the center of each second optical fiber channel (113) is located on a side of the second optical fiber channel (113) close to the first optical fiber channel (112).

2. The anti-crosstalk multi-channel signal transmission silicon photonic module according to claim 1, characterized in that: The arc lengths of the three second optical fiber channels (113) located on the same side of the first optical fiber channel (112) are all different, and the arc lengths of the three second optical fiber channels (113) increase in a direction away from the first optical fiber channel (112).

3. The anti-crosstalk multi-channel signal transmission silicon photonic module according to claim 2, characterized in that: The two first optical fiber channels (112) are parallel to each other and symmetrical about the symmetry axis, and the three second optical fiber channels (113) on the left side of the first optical fiber channel (112) and the three second optical fiber channels (113) on the right side are symmetrical about the symmetry axis.

4. The anti-crosstalk multi-channel signal transmission silicon photonic module according to claim 1, characterized in that: The angle between the tangent line of the two end points of the second optical fiber channel (113) and the line connecting the two end points is less than or equal to 45 degrees.

5. The anti-crosstalk multi-channel signal transmission silicon photonic module according to claim 1, characterized in that: The invention comprises two cover plates (12), the lower surface of the base plate (11) is provided with eight optical fiber channels (111) arranged side by side, the optical fiber channels (111) opened on the upper and lower surfaces are staggered and do not overlap, each optical fiber channel (111) on the lower surface is provided with an optical fiber (13), and the cover plate (12) fixes the optical fiber (13) in the optical fiber channel (111) by covering and pressing the optical fiber (13).

6. The crosstalk-proof multi-channel signal transmission silicon photonic module according to claim 5, characterized in that: The eight optical fibers (13) arranged on one side of the substrate (11) are TX optical fibers, and the eight optical fibers (13) arranged on the other side of the substrate (11) are RX optical fibers. The eight TX optical fibers are respectively coupled to the eight light output waveguides of the silicon photonic chip (2), and the eight RX optical fibers are coupled to the multi-channel optical chip via lenses.

7. The crosstalk-proof multi-channel signal transmission silicon photonic module according to claim 1, characterized in that: An isolation groove (114) is provided between each adjacent optical fiber channel (111), and an optical signal isolation medium is fixedly provided in the isolation groove (114).

8. The anti-crosstalk multi-channel signal transmission silicon photonic module according to claim 1, characterized in that: The optical fiber channel (111) is a V-shaped groove, a U-shaped groove or a rectangular groove, and a refractive index matching glue is filled between the optical fiber channel (111) and the optical fiber (13).

9. The anti-crosstalk multi-channel signal transmission silicon photonic module according to claim 1, characterized in that: The substrate (11) is made of ceramic material, and the cover plate (12) is made of glass material.

Images