A back-to-back miniaturized BOSA device and QSFP+ optical module

Abstract

This utility model relates to a back-to-back miniaturized BOSA device, comprising a first transmitting TO-CAN and a first receiving TO-CAN located at the rear of a base, a second transmitting TO-CAN and a second receiving TO-CAN located at the front of the base, and a first adapter and a second adapter located on the right side of the base; the first transmitting TO-CAN, the first receiving TO-CAN, the second transmitting TO-CAN, the second receiving TO-CAN, the first adapter, the second adapter, a first roof reflector prism, a first filter, a second filter, a third filter, a fourth filter, a second roof reflector prism, a first reflector, and a second reflector are fixed at corresponding positions on the base. A QSFP+ optical module, with the back-to-back miniaturized BOSA device mounted inside a housing, offers the following advantages: the total width is less than or equal to 12mm, allowing for encapsulation within a conventional housing, thereby increasing the capacity of a single optical module.

Description

Technical Field

[0001] This utility model relates to the field of optical module technology, specifically to a back-to-back miniaturized BOSA device and a QSFP+ optical module. Background Technology

[0002] Traditional QSFP+ optical module packages use a single BOSA device. However, to increase the capacity of a single optical module, the number of BOSA devices within a single module has been increased from one to two. Currently, the internal dimensions of the QSFP+ optical module housing are approximately 14.7mm. Since the TO-CAN pins of the BOSA device are soldered to the PCB using an FPC flexible board, the total width of the BOSA device must be at least less than 14mm. If two conventional BOSA devices are placed back-to-back inside the housing, and the total width is required to be less than 14mm while maintaining a 6.25mm distance between the center lines of the two adapter optical axes of the two conventional BOSA devices, then interference will occur in the original optical components within each BOSA device. Specifically, as shown below... Figure 1 As shown, this results in the inability to meet the usage requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a back-to-back miniaturized BOSA device and QSFP+ optical module to overcome the shortcomings of the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A back-to-back miniaturized BOSA device includes:

[0006] A first transmitting TO-CAN and a first receiving TO-CAN are arranged side by side on the rear side of the base and distributed longitudinally; a second transmitting TO-CAN and a second receiving TO-CAN are arranged side by side on the front side of the base and distributed longitudinally; and a first adapter and a second adapter are arranged side by side on the right side of the base and distributed laterally.

[0007] The light emitted by the first transmitting TO-CAN sequentially passes through the first roof reflector prism, the first filter, the second roof reflector prism, and the first reflector prism before being coupled into the first adapter; the light emitted by the first adapter sequentially passes through the first reflector prism, the second roof reflector prism, the first filter, and the third filter before being coupled into the first receiving TO-CAN.

[0008] The light emitted by the second transmitting TO-CAN passes sequentially through the first roof reflector prism, the second filter, the second roof reflector prism, and the second reflector prism before being coupled into the second adapter; the light emitted by the second adapter passes sequentially through the second reflector prism, the second roof reflector prism, the second filter, and the fourth filter before being coupled into the second receiving TO-CAN.

[0009] The beneficial effects of this utility model are as follows: By adjusting the layout and orientation of the first transmitting TO-CAN, the first receiving TO-CAN, the second transmitting TO-CAN, and the second receiving TO-CAN, and by introducing the first roof reflecting prism, the second roof reflecting prism, the first reflecting prism, and the second reflecting prism to adjust the optical path of the transmitted and received light, the back-to-back miniaturized BOSA device in this utility model can achieve a total width of less than or equal to 12mm while maintaining the same function and having a 6.25mm distance between the optical axis centerlines of the two adapters. This allows it to be packaged inside a conventional housing, thereby increasing the capacity of a single optical module and achieving miniaturized high-density packaging.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, a first optical isolator is fixed on the base between a reflective surface of the first roof ridge reflector prism and the first filter. The light emitted by the first TO-CAN emitted by the first roof ridge reflector prism is deflected and coupled into the first filter through the first optical isolator.

[0012] Furthermore, a second optical isolator is fixed on the base between the other reflective surface of the first roof ridge reflector and the second filter. The light emitted by the second TO-CAN emission is reflected and redirected by the other reflective surface of the first roof ridge reflector and then coupled into the second filter through the second optical isolator. The first optical isolator and the second optical isolator are staggered to the left and right.

[0013] Furthermore, the two reflecting surfaces of the first ridge reflecting prism are tilted at 45°, and the two reflecting surfaces of the second ridge reflecting prism are tilted at 45°.

[0014] Furthermore, the first filter is a 45° filter, and the second filter is a 45° filter.

[0015] Furthermore, the first reflecting prism is a 45° reflecting prism, and the second reflecting prism is a 45° reflecting prism.

[0016] Furthermore, the third filter is a 0° filter, and the fourth filter is a 0° filter.

[0017] Based on the above technical solution, this utility model also provides a QSFP+ optical module, including: a housing and a back-to-back miniaturized BOSA device, wherein the back-to-back miniaturized BOSA device is installed inside the housing.

[0018] The further beneficial effect of adopting the above is that the capacity of a single optical module can be increased without changing the internal size of the housing, thus achieving miniaturized high-density packaging.

[0019] Furthermore, there are two back-to-back miniaturized BOSA devices, which are stacked vertically inside the housing.

[0020] The further beneficial effect of adopting the above is that its capacity is increased by 3 times compared to the traditional QSFP+ optical module. Attached Figure Description

[0021] Figure 1 This is an assembly diagram of two conventional BOSA devices in the prior art;

[0022] Figure 2 This is a structural diagram of the back-to-back miniaturized BOSA device in this utility model;

[0023] Figure 3 This is a diagram of the outer shell structure.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Base; 2. First Transmitting TO-CAN; 3. First Receiving TO-CAN; 4. Second Transmitting TO-CAN; 5. Second Receiving TO-CAN; 6. First Adapter; 7. Second Adapter; 8. First Roof Reflecting Prism; 9. First Filter; 10. Second Filter; 11. Third Filter; 12. Fourth Filter; 13. Second Roof Reflecting Prism; 14. First Reflecting Prism; 15. Second Reflecting Prism; 16. First Optical Isolator; 17. Second Optical Isolator; 18. Housing. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] Example 1

[0028] like Figure 2As shown, a back-to-back miniaturized BOSA device includes: a base 1 and a first transmitting TO-CAN2, a first receiving TO-CAN3, a second transmitting TO-CAN4, a second receiving TO-CAN5, a first adapter 6, a second adapter 7, a first roof reflector prism 8, a first filter 9, a second filter 10, a third filter 11, a fourth filter 12, a second roof reflector prism 13, a first reflector 14, and a second reflector 15, wherein the first transmitting TO-CAN2 and the first receiving TO-CAN3 are arranged side by side on the rear side of the base 1 and distributed longitudinally, and the second transmitting TO-CAN5... - CAN4 and the second receiving TO-CAN5 are arranged side by side on the front side of the base 1 and distributed longitudinally. The first adapter 6 and the second adapter 7 are arranged side by side on the right side of the base 1 and distributed laterally. It can be understood that: the layout direction of the first transmitting TO-CAN2 is perpendicular to the layout direction of the first adapter 6, the layout direction of the first receiving TO-CAN3 is perpendicular to the layout direction of the first adapter 6, the layout direction of the second transmitting TO-CAN4 is perpendicular to the layout direction of the second adapter 7, the layout direction of the second receiving TO-CAN5 is perpendicular to the layout direction of the second adapter 7, the first adapter 6 is an LC adapter, and the second adapter 7 is also an LC adapter.

[0029] The first roof-shaped reflecting prism 8 is located between the first transmitting TO-CAN2 and the second transmitting TO-CAN4. The first roof-shaped reflecting prism 8 has a first reflecting surface and a second reflecting surface, which are arranged in a roof-shaped pattern. The first reflecting surface of the first roof-shaped reflecting prism 8 is coupled to the first transmitting TO-CAN2, and the second reflecting surface of the first roof-shaped reflecting prism 8 is coupled to the second transmitting TO-CAN4. Between the first receiving TO-CAN3 and the second receiving TO-CAN5, a third filter 11, a first filter 9, a second filter 10, and a fourth filter 12 are arranged sequentially from back to front. The second roof-shaped reflecting prism 13 is located between the first adapter 6 and the second adapter 7. The second roof prism 13 has a first reflecting surface and a second reflecting surface. The first reflecting surface and the second reflecting surface of the second roof prism 13 are distributed in a roof shape. The first reflecting surface of the second roof prism 13 is coupled to the first adapter 6 via the first reflecting mirror 14. The second reflecting surface of the second roof prism 13 is coupled to the second adapter 7 via the second reflecting mirror 15. The first filter 9 is coupled to the first reflecting surface of the second roof prism 13. The second filter 10 is coupled to the second reflecting surface of the second roof prism 13. The reflecting surface of the first filter 9 is coupled to the first receiver TO-CAN 3 via the third filter 11. The reflecting surface of the second filter 10 is coupled to the second receiver TO-CAN 5 via the fourth filter 12.

[0030] The light emitted by the first transmitter TO-CAN2 is coupled into the first adapter 6 after passing through the first roof reflecting prism 8, the first filter 9, the second roof reflecting prism 13, and the first reflecting prism 14 in sequence. Specifically, the light emitted by the first transmitter TO-CAN2 is coupled into the first adapter 6 after being reflected and redirected by the first reflecting surface of the first roof reflecting prism 8, transmitted through the first filter 9, reflected and redirected by the first reflecting surface of the second roof reflecting prism 13, and reflected and redirected by the first reflecting prism 14 in sequence.

[0031] The light emitted by the first adapter 6 is coupled into the first receiving TO-CAN3 after passing through the first reflecting prism 14, the second roof reflecting prism 13, the first filter 9, and the third filter 11 in sequence. Specifically, the light emitted by the first adapter 6 is reflected and redirected by the first reflecting prism 14, the first reflecting surface of the second roof reflecting prism 13, the first filter 9, and the third filter 11 in sequence before being coupled into the first receiving TO-CAN3. That is, the first filter 9 transmits the light emitted by the first transmitting TO-CAN2, while the first filter 9 reflects the light emitted by the first adapter 6.

[0032] The light emitted by the second transmitter TO-CAN4 is coupled into the second adapter 7 after passing through the first roof reflecting prism 8, the second filter 10, the second roof reflecting prism 13, and the second reflecting prism 15 in sequence. Specifically, the light emitted by the second transmitter TO-CAN4 is coupled into the second adapter 7 after being reflected and redirected by the second reflecting surface of the first roof reflecting prism 8, transmitted through the second filter 10, reflected and redirected by the second reflecting surface of the second roof reflecting prism 13, and reflected and redirected by the second reflecting prism 15 in sequence.

[0033] The light emitted by the second adapter 7 is coupled into the second receiver TO-CAN 5 after passing through the second reflecting prism 15, the second roof reflecting prism 13, the second filter 10, and the fourth filter 12 in sequence. Specifically, the light emitted by the second adapter 7 is coupled into the second receiver TO-CAN 5 after being reflected and redirected by the second reflecting prism 15, the second reflecting surface of the second roof reflecting prism 13, the second filter 10, and the fourth filter 12. That is, the second filter 10 transmits the light emitted by the second transmitting TO-CAN 4, while the second filter 10 reflects the light emitted by the second adapter 7.

[0034] The first transmitting TO-CAN2, the first receiving TO-CAN3, the second transmitting TO-CAN4, the second receiving TO-CAN5, the first adapter 6, the second adapter 7, the first roof reflector prism 8, the first filter 9, the second filter 10, the third filter 11, the fourth filter 12, the second roof reflector prism 13, the first reflector 14, and the second reflector 15 fixed on the base 1 are actually distributed in a symmetrical state.

[0035] By adjusting the layout and orientation of the first transmitting TO-CAN2, the first receiving TO-CAN3, the second transmitting TO-CAN4, and the second receiving TO-CAN5, and by introducing the first roof reflecting prism 8, the second roof reflecting prism 13, the first reflecting prism 14, and the second reflecting prism 15 to adjust the optical path of the transmitted and received light, the back-to-back miniaturized BOSA device of this invention can achieve a total width of less than or equal to 12mm (excluding pin dimensions, calculated in the same way as in the prior art) while maintaining the same function and with the optical axis centerline distance between the two adapters being 6.25mm. This allows it to be packaged inside a conventional housing, thereby increasing the capacity of a single optical module and achieving miniaturized high-density packaging.

[0036] Example 2

[0037] like Figure 2 As shown, this embodiment is a further improvement on embodiment 1, as detailed below:

[0038] A first optical isolator 16 is fixed on the base 1 between a reflective surface of the first roof ridge reflecting prism 8 and a first filter 9. The light emitted by the first emission TO-CAN2 is first reflected and redirected by a reflective surface of the first roof ridge reflecting prism 8, and then coupled into the first optical isolator 16. Then, it is coupled into the first filter 9 via the first optical isolator 16. As mentioned above, the two reflective surfaces of the first roof ridge reflecting prism 8 are defined as the first reflective surface and the second reflective surface. This description can be specifically understood as follows: A first optical isolator 16 is fixed on the base 1 between the first reflective surface of the first roof ridge reflecting prism 8 and the first filter 9. The light emitted by the first emission TO-CAN2 is first reflected and redirected by the first reflective surface of the first roof ridge reflecting prism 8, and then coupled into the first optical isolator 16. Then, it is coupled into the first filter 9 via the first optical isolator 16.

[0039] Furthermore, a second optical isolator 17 is fixed on the base 1 between the other reflective surface of the first roof ridge reflecting prism 8 and the second filter 10. The first optical isolator 16 and the second optical isolator 17 are offset to the left and right. The other reflective surface of the first roof ridge reflecting prism 8 first reflects and redirects the light emitted by the second emission TO-CAN4, and then couples it into the second optical isolator 17, and then couples it into the second filter 10 through the second optical isolator 17. Similarly, with the two reflective surfaces of the first roof ridge reflecting prism 8 defined as the first reflective surface and the second reflective surface as described above, this description can be specifically understood as follows: A second optical isolator 17 is fixed on the base 1 between the second reflective surface of the first roof ridge reflecting prism 8 and the second filter 10. The second reflective surface of the first roof ridge reflecting prism 8 first reflects and redirects the light emitted by the second emission TO-CAN4, and then couples it into the second optical isolator 17, and then couples it into the second filter 10 through the second optical isolator 17.

[0040] Example 3

[0041] like Figure 2 As shown, this embodiment is a further improvement on embodiment 1 or 2, as detailed below:

[0042] The two reflecting surfaces of the first roof prism 8 are tilted at 45°, and the two reflecting surfaces of the second roof prism 13 are tilted at 45°. Therefore, the reflecting surfaces of both the first roof prism 8 and the second roof prism 13 are used to deflect the light by 90°. The first filter 9 is a 45° filter, which can be understood as follows: the first filter 9 is distributed at 45°. The first filter 9 can transmit the light emitted by the first emitter TO-CAN2 and reflect the light emitted by the first adapter 6, and the reflection deflection angle is 90°. The second filter 10 is a 45° filter, which can be understood as follows: the second filter 10 is distributed at 45°. The second filter 10 can transmit the light emitted by the second emitter TO-CAN4 and reflect the light emitted by the second adapter 7, and the reflection deflection angle is 90°.

[0043] The first reflecting prism 14 is a 45° reflecting prism, which can be understood as the first reflecting prism 14 being distributed at 45°; the second reflecting prism 15 is a 45° reflecting prism, which can be understood as the second reflecting prism 15 being distributed at 45°. Therefore, both the first reflecting prism 14 and the second reflecting prism 15 are used to redirect light to 90°.

[0044] The third filter 11 is a 0° filter, which can be understood as: the third filter 11 is distributed at 0°. The fourth filter 12 is a 0° filter, which can be understood as: the fourth filter 12 is distributed at 0°.

[0045] Example 4

[0046] like Figure 3 As shown, a QSFP+ optical module includes: a housing 18 and a back-to-back miniaturized BOSA device as in any of the embodiments 1 to 3. The internal width of the housing 18 is 14.7 mm, that is, the internal width of the housing 18 remains unchanged. The back-to-back miniaturized BOSA device is installed inside the housing 18. Since the total width of the base 1 is less than or equal to 12 mm, the back-to-back miniaturized BOSA device can be installed in the mounting area of ​​the housing 18. Thus, the capacity of a single optical module can be increased without changing the internal size of the housing 18, achieving miniaturized high-density packaging.

[0047] Example 5

[0048] This embodiment is a further improvement on embodiment 4, as detailed below:

[0049] The number of back-to-back miniaturized BOSA devices is two. The two back-to-back miniaturized BOSA devices are installed inside the housing 18 in a stacked manner. At this time, it is equivalent to having four conventional BOSA devices in one housing 18. Compared with the traditional QSFP+ optical module, its capacity is increased by 3 times, realizing miniaturized high-density packaging.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A back-to-back miniaturized BOSA device, characterized in that, include: The first transmitting TO-CAN (2) and the first receiving TO-CAN (3) are arranged side by side on the rear side of the base (1) and distributed longitudinally; the second transmitting TO-CAN (4) and the second receiving TO-CAN (5) are arranged side by side on the front side of the base (1) and distributed longitudinally; and the first adapter (6) and the second adapter (7) are arranged side by side on the right side of the base (1) and distributed laterally. The light emitted by the first transmitting TO-CAN (2) passes through the first roof reflecting prism (8), the first filter (9), the second roof reflecting prism (13), and the first reflecting prism (14) in sequence before being coupled into the first adapter (6); the light emitted by the first adapter (6) passes through the first reflecting prism (14), the second roof reflecting prism (13), the first filter (9), and the third filter (11) in sequence before being coupled into the first receiving TO-CAN (3); The light emitted by the second transmitting TO-CAN (4) passes through the first roof reflecting prism (8), the second filter (10), the second roof reflecting prism (13), and the second reflecting prism (15) in sequence before being coupled into the second adapter (7); the light emitted by the second adapter (7) passes through the second reflecting prism (15), the second roof reflecting prism (13), the second filter (10), and the fourth filter (12) in sequence before being coupled into the second receiving TO-CAN (5).

2. The back-to-back miniaturized BOSA device according to claim 1, characterized in that, A first optical isolator (16) is fixed on the base (1) between a reflective surface of the first roof ridge reflector (8) and the first filter (9). The light emitted by the first emission TO-CAN (2) is reflected and redirected by a reflection of the first roof ridge reflector (8) and then coupled into the first filter (9) through the first optical isolator (16).

3. The back-to-back miniaturized BOSA device according to claim 2, characterized in that, A second optical isolator (17) is fixed on the base (1) between the other reflective surface of the first ridge reflector prism (8) and the second filter (10). The light emitted by the second emitter TO-CAN (4) is reflected and redirected by the other reflective surface of the first ridge reflector prism (8) and then coupled into the second filter (10) through the second optical isolator (17). The first optical isolator (16) and the second optical isolator (17) are staggered to the left and right.

4. The back-to-back miniaturized BOSA device according to claim 1, characterized in that, The two reflecting surfaces of the first ridge reflecting prism (8) are tilted at 45°, and the two reflecting surfaces of the second ridge reflecting prism (13) are tilted at 45°.

5. A back-to-back miniaturized BOSA device according to claim 4, characterized in that, The first filter (9) is a 45° filter, and the second filter (10) is a 45° filter.

6. A back-to-back miniaturized BOSA device according to claim 5, characterized in that, The first reflecting prism (14) is a 45° reflecting prism, and the second reflecting prism (15) is a 45° reflecting prism.

7. A back-to-back miniaturized BOSA device according to claim 1, characterized in that, The third filter (11) is a 0° filter, and the fourth filter (12) is a 0° filter.

8. A QSFP+ optical module, characterized in that, include: The housing (18) and the back-to-back miniaturized BOSA device as claimed in any one of claims 1 to 7, wherein the back-to-back miniaturized BOSA device is mounted inside the housing (18).

9. A QSFP+ optical module according to claim 8, characterized in that, The number of back-to-back miniaturized BOSA devices is two, and the two back-to-back miniaturized BOSA devices are installed inside the housing (18) in a stacked manner.

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