Clamp for optical module test and optical module test equipment

Abstract

The embodiment of the utility model provides a clamp for optical module testing and optical module testing equipment, and the clamp comprises a housing which comprises a top plate, a bottom plate and side plates which are connected with the top plate and the bottom plate, and the side plates, the top plate and the bottom plate form an accommodation space; the top plate is provided with an airflow channel for introducing dry gas into the accommodating space; the temperature control assembly is arranged in the accommodating space; the limiting structure is provided with a limiting through hole, the limiting structure is arranged corresponding to the temperature control assembly, the limiting through hole is provided with a limiting boss corresponding to the temperature control assembly and an inserting cavity corresponding to the limiting boss, and the inserting cavity is used for inserting the optical module to be detected; and the driving mechanism is arranged in the accommodating space and is in transmission connection with the temperature control assembly. According to the optical module testing device, the shell is composed of the top plate, the bottom plate and the side plates, and the side plates, the top plate and the bottom plate define the relatively-closed containing space, so that the air tightness of the shell is improved, air exchange between the shell and the outside is reduced, and normal proceeding of optical module testing is guaranteed.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of bit error meters, and specifically relate to a fixture for optical module testing and an optical module testing device. Background Art

[0002] Optical module test equipment can be used for performance testing of optical modules of different packaging types in different environments. For example, optical module test equipment is used for bit error performance and eye diagram quality testing of 400G / 800G optical modules in high and low temperature environments, and can support optical module packaging forms such as QSFP-DD, OSFP, QSFP112, QSFP56, etc. Usually, the optical module test equipment has a fixture for clamping the optical module to be tested. Existing fixtures usually have poor air tightness, and there is gas exchange between the inside and outside of the fixture, and air with high humidity can easily enter the fixture. Condensation water is easily formed on the surface of the optical module to be tested during the cooling process, which will seriously affect the test results of the optical module to be tested, and even damage the optical module to be tested in severe cases.

[0003] Therefore, how to solve the above problems has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art, and provide a fixture for optical module testing and an optical module testing device.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a fixture for testing an optical module, comprising: a housing, the housing comprising a top plate, a bottom plate, and side plates respectively connected to the top plate and the bottom plate, the side plates, the top plate and the bottom plate enclosing a receiving space; the top plate is provided with an air flow channel for introducing dry gas into the receiving space;

[0006] At least two temperature control components are arranged in the accommodation space;

[0007] At least two limiting structures are provided with limiting through holes, the limiting structures are provided corresponding to the temperature control components, the limiting through holes are provided with insertion cavities, and the insertion cavities are used to insert the optical module to be tested;

[0008] The driving mechanism is arranged in the accommodating space, and the driving mechanism is transmission-connected with any of the temperature control components to drive the temperature control component to move toward the direction close to the corresponding limiting structure so as to abut against the optical module.

[0009] Optionally, the shell has a short axis direction and a long axis direction;

[0010] The side plates include a first side plate and a second side plate that are spaced apart along the short axis direction, and a third side plate and a fourth side plate that are spaced apart along the long axis direction. The first side plate, the second side plate, the third side plate, and the fourth side plate surround the peripheral sides of the top plate and the bottom plate; wherein,

[0011] The first side plate and the second side plate are respectively connected to the first end and the second end of the limiting structure, and the first side plate and the second side plate are respectively provided with a first avoidance opening and a second avoidance opening at positions corresponding to the insertion cavity.

[0012] Optionally, the first side plate includes a first sub-side plate and a second sub-side plate, and the second side plate includes a third sub-side plate and a fourth sub-side plate;

[0013] The first ends of the first sub-side plate and the third sub-side plate are arranged on the bottom plate, and the second ends of the first sub-side plate and the third sub-side plate are provided with step grooves for placing the limiting structure;

[0014] The second sub-side plate covers the outside of the first sub-side plate, and both ends of the second sub-side plate are respectively connected to the top plate and the bottom plate, and the second sub-side plate is provided with a first avoidance opening at a position corresponding to the insertion cavity;

[0015] The first end of the fourth sub-side plate is connected to the top plate, the second end of the fourth sub-side plate is arranged at the second end of the third sub-side plate, and the fourth sub-side plate is spaced apart from the third sub-side plate at a position corresponding to the insertion cavity to form a second avoidance opening.

[0016] Optionally, the fixture further includes a first gas path assembly arranged on the top plate. The first gas path assembly is communicated with the air inlet of the air flow channel, and the dry gas provided by the first gas path assembly is introduced into the accommodation space through the air flow channel.

[0017] Optionally, the at least two temperature control components are arranged along the length direction of the top plate;

[0018] The air flow channel includes a main air duct and a plurality of branch air ducts communicated with the main air duct. The main air duct is arranged along the length direction of the top plate; the branch air ducts correspond to the positions of the temperature control components, and the branch air ducts are arranged along the depth direction of the insertion cavity.

[0019] Optionally, two air outlets corresponding to any one of the branch air ducts are arranged on the top plate. Both of the two air outlets are communicated with the accommodation space, and among the two air outlets corresponding to any one of the branch air ducts, one air outlet corresponds to the first end position of the optical module to be tested, and the other air outlet corresponds to the second end position of the optical module to be tested.

[0020] Optionally, the air inlet of the airflow channel is arranged on the surface of the top plate facing the second side plate, and the second side plate is provided with a first through groove corresponding to the position of the air inlet; wherein, the first air path component penetrates into the first through groove and is connected with the air inlet of the airflow channel.

[0021] Optionally, the driving mechanism comprises a cylinder, a cylinder body of the cylinder is located at a side of the temperature control component away from the limiting structure and connected to the top plate, and a piston rod of the cylinder corresponds to the temperature control component;

[0022] The fixture also includes a second air circuit assembly, which is arranged on the side of the top plate facing the second side plate; a second through groove is arranged on the second side plate at a position corresponding to the position of the second air circuit assembly; wherein the second air circuit assembly respectively penetrates the second through groove and the top plate to communicate with the cylinder body of the cylinder.

[0023] Optionally, the temperature control component includes a water cooling module, a semiconductor refrigeration module and a heat sink module; the water cooling module is transmission-connected to the driving mechanism, the heat sink module is located on a side of the limiting structure facing the temperature control component, and the semiconductor refrigeration module is sandwiched between the water cooling module and the heat sink module;

[0024] The fixture further comprises a water channel assembly, which is disposed on the third side plate and connected to the water cooling module, and is used to provide a water cooling medium to the water cooling module.

[0025] Optionally, the fixture further comprises a humidity detection element, and the humidity detection element is used to detect the humidity of the gas in the accommodating space.

[0026] Optionally, the fixture further includes a test board, the test board includes a support plate and a PCB board, the support plate corresponds to the insertion cavity and is arranged on the side plate; the support plate also has a groove and a vent hole connected to the groove;

[0027] The PCB board cover is arranged in the groove, and defines a cavity communicating with the insertion cavity together with the support plate, the first end of the PCB board is provided with a socket for matching and connecting with the second end of the optical module to be tested, and the second end of the PCB board is used for electrically connecting with the bit error meter;

[0028] The dry gas entering through the vent hole passes through the cavity and the second end of the optical module in sequence and enters the housing.

[0029] Optionally, an exhaust hole is provided on the shell, and the exhaust hole corresponds to a position of a vortex formed by the dry gas entering the shell through the air flow channel.

[0030] In a second aspect of the embodiments of the present disclosure, an optical module testing device is provided. The optical module testing device includes a testing box body and a fixture for optical module testing as described above. The fixture for optical module testing is detachably connected to the testing box body.

[0031] The beneficial effects of the embodiments of the present disclosure include:

[0032] In the present disclosure, the housing is composed of a top plate, a bottom plate, and side plates respectively connected to the top plate and the bottom plate. The side plates and the top plate and the bottom plate enclose a relatively airtight accommodation space, thereby improving the airtightness of the housing, reducing the gas exchange between the housing and the outside, and ensuring the normal progress of the optical module testing. Further, by introducing a dry gas into the accommodation space through the air flow channel, the components inside the housing can be dried to prevent the occurrence of condensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of a fixture for optical module testing according to an embodiment of the present disclosure;

[0034] Figure 2 is a schematic structural diagram of a fixture for optical module testing according to an embodiment of the present disclosure, in which the positional relationship between the first temperature control component, the limiting structure, and the second temperature control component is shown;

[0035] Figure 3 is Figure 2 a partial enlarged schematic diagram of; in which, the positional relationship between the first limiting boss, the second limiting boss, and the insertion cavity is shown;

[0036] Figure 4 is a schematic structural diagram of a fixture for optical module testing according to another embodiment of the present disclosure;

[0037] Figure 5 is Figure 4 an exploded structural diagram of;

[0038] Figure 6 is Figure 5 a partial enlarged schematic diagram of; in which, the positional relationship between the limiting through hole and the insertion cavity is shown;

[0039] Figure 7 is an exploded structural diagram of the first heat sink module and the second heat sink module;

[0040] Figure 8 is a schematic structural diagram of a fixture for optical module testing according to an embodiment of the present disclosure;

[0041] shows the positional relationship between the second temperature detection element and the second heat sink;

[0042] Figure 9 is Figure 8 a partially enlarged schematic diagram of the structure;

[0043] Figure 10 is a schematic diagram of the structure of a fixture for optical module testing according to another embodiment of the present disclosure; showing the positional relationship between the first temperature detection element and the first heat sink;

[0044] Figure 11 is Figure 10 a partially enlarged schematic diagram of the structure;

[0045] Figure 12 is a schematic diagram of the structure of a fixture for optical module testing according to an embodiment of the present disclosure; showing the positional relationship between the third sub-side plate and the fourth sub-side plate in the second side plate;

[0046] Figure 13 is a schematic diagram of the structure of a fixture for optical module testing according to another embodiment of the present disclosure; showing the positional relationship between the third sub-side plate and the fourth sub-side plate in the second side plate;

[0047] Figure 14 is an exploded schematic diagram of a partial structure of a fixture for optical module testing according to an embodiment of the present disclosure; showing the positional relationship between the first sub-side plate and the bottom plate in the first side plate;

[0048] Figure 15 is an exploded schematic diagram of a partial structure of a fixture for optical module testing according to another embodiment of the present disclosure;

[0049] Figure 16 is a cross-sectional view of a fixture for optical module testing according to an embodiment of the present disclosure; wherein, Figure 16 is obtained by Figure 14 sectioning along A1 - A2;

[0050] Figure 17 is a schematic diagram of the structure of a fixture for optical module testing according to an embodiment of the present disclosure;

[0051] Figure 18 is an exploded structural schematic diagram of a device under test board and a support board according to an embodiment of the present disclosure;

[0052] Figure 19 is a schematic diagram of gas flow simulation according to an embodiment of the present disclosure; wherein, the arrows in the figure indicate the gas flow direction;

[0053] Figure 20 is a schematic diagram of gas flow simulation according to another embodiment of the present disclosure; wherein, the arrows in the figure indicate the gas flow direction;

[0054] Figure 21Schematic structural diagram of an optical module testing device according to an embodiment of the present disclosure;

[0055] Figure 22 Schematic gas path principle diagram of an optical module testing device according to an embodiment of the present disclosure; among them, the gas supply gas path of the air flow channel and the ventilation hole is shown;

[0056] Figure 23 Schematic gas path principle diagram of an optical module testing device according to an embodiment of the present disclosure; among them, the gas supply gas path of the pen-shaped cylinder is shown;

[0057] Figure 24 Schematic gas path principle diagram of an optical module testing device according to an embodiment of the present disclosure; among them, the gas supply gas path of the cylinder of the driving mechanism is shown.

[0058] In the figure, 1 is an optical module testing device; 10 is a fixture; 11 is a housing; 12 is a first temperature control component; 121 is a first water cooling module; 122 is a first semiconductor refrigeration module; 123 is a first heat sink module; 1211 is a first water cooling seat; 1212 is a first water cooling head; 12111 is a first limiting groove; 1231 is a first heat sink; 1232 is a first heat sink cover plate; 1233 is a first temperature detection element; 12311 is a first protruding part; 12321 is a first avoidance through hole; 12322 is a first installation groove; 13 is a second temperature control component; 131 is a second water cooling module; 132 is a second semiconductor refrigeration module; 133 is a second heat sink module; 1311 is a second water cooling seat; 1312 is a second water cooling head; 1331 is a second heat sink; 1332 is a second heat sink cover plate; 1333 is a second temperature detection element; 13311 is a second protruding part; 13321 is a second avoidance through hole; 14 is a limiting structure; 141 is a limiting through hole; 142 is a first limiting boss; 143 is a second limiting boss; 144 is an insertion cavity; 145 is a first limiting block; 146 is a second limiting block; 15 is a first cylinder; 16 is a second cylinder; 17 is a first guiding member; 18 is a second guiding member; 19 is a first limiting member; 20 is a first elastic member; 21 is a second limiting member; 22 is a second elastic member; 23 is a third limiting member; 24 is a fourth limiting member; 25 is a fixing member; 26 is a gasket; 30 is a top plate; 40 is a bottom plate; 50 is a side plate; 60 is a first avoidance opening; 70 is a second avoidance opening; 80 is a first gas path component; 90 is a second gas path component; 100 is a water path component; 31 is an air flow channel; 32 is an air outlet; 311 is a main air duct; 312 is a branch air duct; 51 is a first side plate; 52 is a second side plate; 53 is a third side plate; 54 is a fourth side plate; 511 is a first sub-side plate; 512 is a second sub-side plate; 521 is a third sub-side plate; 522 is a fourth sub-side plate; 523 is a first through groove; 524 is a second through groove; 531 is a fifth sub-side plate; 532 is a sixth sub-side plate; 200 is a test board; 300 is a support plate; 400 is a PCB board; 301 is a groove; 302 is a ventilation hole; 303 is a first plug-in component; 304 is a second plug-in component; 305 is a third cylinder; 210 is a test box body. Detailed implementation manners

[0059] To enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0060] As Figure 1-2, as shown in FIGS. 6 and 12 - 16, a fixture 10 for testing an optical module, the fixture 10 includes a housing 11, a temperature control component, a limiting structure 14 and a driving mechanism. The housing 11 includes a top plate 30, a bottom plate 40 and side plates 50 respectively connected to the top plate 30 and the bottom plate 40. The side plates 50 and the top plate 30 and the bottom plate 40 enclose an accommodation space, and the top plate 30 is provided with an air flow channel 31 for introducing dry gas into the accommodation space. At least two temperature control components are arranged in the accommodation space.

[0061] At least two limiting structures 14 are provided with limiting through holes 141. The limiting structures 14 are arranged corresponding to the temperature control components. The limiting through holes 141 are provided with insertion cavities 144 for inserting the optical module to be tested.

[0062] The driving mechanism is arranged in the accommodation space and is in transmission connection with any one of the temperature control components to drive the temperature control component to move towards the corresponding limiting structure 14 to abut against the optical module.

[0063] In the present disclosure, the housing 11 is composed of a top plate 30, a bottom plate 40 and side plates 50 respectively connected to the top plate 30 and the bottom plate 40, and the side plates 50 and the top plate 30 and the bottom plate 40 enclose a relatively airtight accommodation space, thereby improving the airtightness of the housing 11, reducing the gas exchange between the housing 11 and the outside, and ensuring the normal progress of the optical module test. Further, by introducing dry gas into the accommodation space through the air flow channel 31, the components in the housing 11 can be dried to prevent the occurrence of condensation.

[0064] In some embodiments, the limiting through hole 141 is further provided with a limiting boss corresponding to the temperature control component,

[0065] wherein, the limiting boss corresponds to the position of the insertion cavity 144.

[0066] In some embodiments, the housing 11 has a short - axis direction and a long - axis direction. It can be understood that the long - axis direction refers to the direction of the longest side of the housing 11, and the short - axis direction is the direction of the side that is shorter relative to the long - axis direction.

[0067] The side plates 50 include a first side plate 51 and a second side plate 52 spaced apart in the short-axis direction, and a third side plate 53 and a fourth side plate 54 spaced apart in the long-axis direction. The first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54 surround the circumferences of the top plate 30 and the bottom plate 40. Among them, the first side plate 51 and the second side plate 52 are respectively connected to the first end and the second end of the limiting structure 14, and a first avoidance opening 60 and a second avoidance opening 70 are respectively provided at the positions of the first side plate 51 and the second side plate 52 corresponding to the insertion cavity 144. During the optical module test, one end of the optical module is inserted into the insertion cavity 144 through the first avoidance opening 60 of the first side plate 51 and is connected to the DUT board through the second avoidance opening 70 of the second side plate 52. The DUT (Device Under Test) board refers to the device or circuit board being tested during the test process. In the test environment of the optical module test equipment, the DUT board is usually the object under test connected to the optical module test equipment for evaluating whether its performance meets the expected standards.

[0068] In the present disclosure, by providing the first avoidance opening 60 in the first side plate 51 and the second avoidance opening 70 in the second side plate 52 for the insertion of the optical module, the structural integrity of the first side plate 51 and the second side plate 52 can be ensured, thereby ensuring the relative sealing effect of the housing 11.

[0069] In a specific example provided by the present disclosure, the housing 11 is rectangular. Among them, the long-axis direction refers to the direction of the longest side of the housing 11, and the short-axis direction is the direction of the shorter side relative to the long-axis direction.

[0070] Assuming that the three dimensions of the rectangular housing 11 are length (L), width (W), and height (H), they can be defined as follows:

[0071] If L > W and L > H, then the L direction is the long-axis direction, and the shorter one of W and H is the short-axis direction.

[0072] If W > L and W > H, then the W direction is the long-axis direction, and the shorter one of L and H is the short-axis direction.

[0073] If H > L and H > W, then the H direction is the long-axis direction, and the shorter one of L and W is the short-axis direction.

[0074] In some embodiments, the first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54 are respectively detachably connected to the top plate 30 and the bottom plate 40. The beneficial effects of adopting the detachable connection method include: on the one hand, the detachable connection makes it simple and fast to replace damaged or worn side plates, which is beneficial for maintenance. On the other hand, the detachable connection of the side plates can meet later replacement or upgrade requirements and satisfy the user's usage needs.

[0075] In some embodiments, with reference to Figures 12-15 , the first side plate 51 includes a first sub - side plate 511 and a second sub - side plate 512, and the second side plate 52 includes a third sub - side plate 521 and a fourth sub - side plate 522. The first ends of the first sub - side plate 511 and the third sub - side plate 521 are disposed on the bottom plate 40. A step groove 5111 is provided at the second end of the first sub - side plate 511, and a step groove 5211 is provided at the second end of the third sub - side plate 521. The step grooves are used for placing the limiting structure 14.

[0076] In some embodiments, the limiting structure 14 is detachably disposed in the step groove, and the detachable connection method includes but is not limited to threaded connection or snap connection. The detachable connection between the limiting structure 14 and the step groove is beneficial to later replacement, upgrade and maintenance.

[0077] The second sub - side plate 512 covers the outside of the first sub - side plate 511. The two ends of the second sub - side plate 512 are respectively connected to the top plate 30 and the bottom plate 40, and a first avoidance opening 60 is provided at the position of the second sub - side plate 512 corresponding to the insertion cavity 144. Wherein, the optical module is inserted into the insertion cavity 144 through the first avoidance opening 60.

[0078] In some embodiments, the first sub - side plate 511 is detachably connected to the bottom plate 40, and the second sub - side plate 512 is detachably connected to the top plate 30 and the bottom plate 40 respectively. The detachable connection method includes but is not limited to threaded connection or snap connection. The detachable connection of the first sub - side plate 511 and the second sub - side plate 512 is beneficial to later replacement, upgrade and maintenance.

[0079] In some embodiments, the surface of the first sub - side plate 511 facing the second sub - side plate 512 is coplanar with the surfaces of the bottom plate 40 and the top plate 30 facing the second sub - side plate 512. Wherein, along the direction perpendicular to the surface of the second sub - side plate 512, the projection of the second sub - side plate 512 completely covers the projection of the first sub - side plate 511. With this design, the flatness of the surfaces of the first sub - side plate 511, the bottom plate 40 and the top plate 30 facing the second sub - side plate 512 can be ensured, which is beneficial to the sealed connection between the second sub - side plate 512 and the first sub - side plate 511, the bottom plate 40 and the top plate 30. Further, the area of the second sub - side plate 512 is larger than that of the first sub - side plate 511, further ensuring the sealing performance of the housing 11.

[0080] The first end of the fourth sub - side plate 522 is connected to the top plate 30, the second end of the fourth sub - side plate 522 is disposed at the second end of the third sub - side plate 521, and the fourth sub - side plate 522 is spaced from the third sub - side plate 521 at a position corresponding to the insertion cavity 144 to form a second avoidance opening 70. Wherein, the optical module is connected to the DUT board through the second avoidance opening 70.

[0081] In a specific example provided by the present disclosure, the first end of the fourth sub-side plate 522 is detachably connected to the top plate 30, the second end of the fourth sub-side plate 522 abuts against the second end of the third sub-side plate 521, and a through groove is provided at the second end of the fourth sub-side plate 522. The through groove 5221 of the fourth sub-side plate 522 and the step groove 5211 of the third sub-side plate 521 jointly form a second avoidance opening 70 at a position corresponding to the insertion cavity 144. The optical module is connected to the DUT board through the second avoidance opening 70.

[0082] In some embodiments, referring to Figure 13 and Figure 16 , the fixture 10 further includes a first gas path assembly 80 disposed on the top plate 30. The first gas path assembly 80 is communicated with the air inlet of the air flow channel 31. The dry gas provided by the first gas path assembly 80 is introduced into the accommodation space through the air flow channel 31 to maintain the dryness of the gas in the accommodation space and reduce the generation of condensed water vapor.

[0083] In the present disclosure, the air flow channel 31 is opened on the top plate 30. On the one hand, it can reduce the setting of air pipes, make the air path design and layout more concise, and is also beneficial to the later maintenance of the equipment.

[0084] In some embodiments, referring to Figure 16 , at least two temperature control components are arranged along the length direction of the top plate 30. The air flow channel 31 includes a main air duct 311 and a plurality of branch air ducts 312 communicated with the main air duct 311. The main air duct 311 is arranged along the length direction of the top plate 30. The branch air ducts 312 correspond to the positions of the temperature control components, and the branch air ducts 312 are arranged along the depth direction of the insertion cavity 144. It can be understood that the length direction of the top plate is the long axis direction of the housing, and the width direction of the top plate is the short axis direction of the housing or the depth direction of the insertion cavity.

[0085] A specific example provided by the present disclosure, referring to Figures 19-20 , the dry gas introduced through the branch air ducts can effectively act on the temperature control components and avoid the condensation problem of the temperature control components.

[0086] In the present disclosure, since at least two temperature control components are provided along the length direction of the top plate, multiple optical modules can be tested at the same time, thereby improving the utilization efficiency of the optical module testing equipment and having the capability of high parallel testing. By providing a plurality of branch air ducts, each temperature control component can be independently and accurately temperature-regulated at the same time, which is very useful for application scenarios that require specific temperature gradients or local heating / cooling. Furthermore, the design of the main air duct and the branch air duct helps to improve the heat exchange efficiency of the entire equipment, and can transfer heat to the desired location more quickly, thereby achieving fast and stable temperature adjustment. Improving the uniformity and accuracy of temperature control through the above measures can directly affect the reliability and repeatability of the optical module test results, thereby helping to improve the overall product quality.

[0087] In some embodiments, two air outlets 32 corresponding to any branch air channel are provided on the top plate 30, and both air outlets 32 are connected to the accommodating space, and one of the two air outlets 32 corresponding to any branch air channel corresponds to the first end position of the optical module to be tested, and the other air outlet 32 corresponds to the second end position of the optical module to be tested. By respectively providing air outlets at both ends of the optical module to be tested, air can be effectively blown to the first and second ends opposite to the optical module, thereby preventing high temperature condensation from occurring during testing and ensuring the stability of the optical module during the testing process.

[0088] In some embodiments, the air inlet of the airflow channel 31 (not shown in the figure) is arranged on the surface of the top plate 30 facing the second side plate 52, and the second side plate 52 is provided with a first through groove 523 corresponding to the position of the air inlet, wherein the first air path component 80 penetrates the first through groove 523 and communicates with the air inlet of the airflow channel 31. In the present disclosure, by providing the first through groove 523 on the second side plate 52, the first air path component 80 penetrates the first through groove 523 and directly communicates with the air inlet of the airflow channel 31 on the top plate 30, so that the device structure is simpler and convenient for subsequent maintenance. In addition, the design is beneficial to the space utilization of the optical module test equipment and can effectively control the structural size of the optical module test equipment.

[0089] In some embodiments, the driving mechanism includes a cylinder, a cylinder body of which is located on a side of the temperature control component away from the limiting structure 14 and connected to the top plate 30, and a piston rod of the cylinder corresponds to the temperature control component.

[0090] The fixture 10 also includes a second air circuit assembly 90, which is arranged on the side of the top plate 30 facing the second side plate 52. A second through groove 524 is arranged on the second side plate 52 at a position corresponding to the position of the second air circuit assembly 90, wherein the second air circuit assembly 90 respectively penetrates the second through groove 524 and the top plate 30 to communicate with the cylinder body of the cylinder.

[0091] Specifically, the top plate 30 is provided with an air flow passage (not shown in the figure). The second air circuit assembly 90 includes a first air circuit element and a second air circuit element. The first air circuit element is communicated with the air inlet of the air flow passage, one end of the second air circuit element is communicated with the air outlet 32 of the air flow passage, and the other end is communicated with the cylinder block of the cylinder.

[0092] In the present disclosure, by providing a second through groove 524 on the second side plate 52, the second air circuit assembly 90 penetrates into the second through groove 524 and is directly communicated with the air inlet of the air flow passage on the top plate 30. This design has a simple structure, which makes the subsequent maintenance of the device more convenient. In addition, this design is beneficial to the space utilization rate of the optical module testing device and can effectively control the structural size of the optical module testing device.

[0093] In some embodiments, the temperature control assembly includes a water cooling module, a semiconductor refrigeration module, and a heat sink module. The water cooling module is in transmission connection with the driving mechanism. The heat sink module is located on the side of the limiting structure 14 facing the temperature control assembly, and the semiconductor refrigeration module is clamped between the water cooling module and the heat sink module.

[0094] The fixture 10 further includes a water circuit assembly 100. The water circuit assembly 100 is disposed on the third side plate 53 and is connected to the water cooling module. The water circuit assembly 100 is used to supply water cooling medium to the water cooling module.

[0095] In some embodiments, the third side plate 53 includes a fifth sub-side plate 531 and a sixth sub-side plate 532. The first end of the fifth sub-side plate 531 is disposed on the top plate 30, the first end of the sixth sub-side plate 532 is disposed on the bottom plate 40, and the second end of the fifth sub-side plate 531 is connected to the second end of the sixth sub-side plate 532. Among them, the position of the fifth sub-side plate 531 corresponds to the position of the temperature control assembly.

[0096] In some embodiments, the fifth sub-side plate 531 and the sixth sub-side plate 532 are respectively detachably connected to the top plate 30 and the bottom plate 40. The detachable connection methods include but are not limited to threaded connection or snap connection. The detachable connection method facilitates the subsequent maintenance of the devices inside the housing 11.

[0097] In the present disclosure, on the one hand, the threaded connection can provide stable connection strength to ensure the firm combination between the fifth sub-side plate 531 and the sixth sub-side plate 532 and the top plate 30 and the bottom plate 40. On the other hand, the threaded connection can be disassembled and reassembled multiple times without significantly reducing the connection performance between the fifth sub-side plate 531 and the sixth sub-side plate 532 and the top plate 30 and the bottom plate 40.

[0098] In some embodiments, the fixture 10 further includes a humidity detection element (not shown in the figure), which is used to detect the humidity of the gas in the accommodation space. The humidity detection element includes a dew point meter, which is used to detect the air humidity in the accommodation space. The first gas circuit component 80 introduces dry gas into the accommodation space according to the control instruction when the dew point meter detects that the air humidity is greater than a set threshold.

[0099] In some embodiments, reference Figures 17-18 The fixture 10 also includes a test board (MCB, i.e., Module Compliance Board) 200, and the test board 200 includes a support plate 300 and a PCB board (the circuit board can be called a printed circuit board or a printed circuit board, the English name is: Printed Circuit Board abbreviated as PCB) 400. The support plate 300 corresponds to the position of the insertion cavity 144 and is arranged on the side plate 50. The support plate 300 also has a groove 301 and a vent 302 connected to the groove 301. The PCB board 400 is covered in the groove 301, and together with the support plate 300, defines a cavity connected to the insertion cavity 144. The first end of the PCB board 400 is provided with a socket for matching and connecting with the second end of the optical module to be tested, and the second end of the PCB board 400 is used to be electrically connected to the bit error meter, wherein the dry gas entering through the vent 302 passes through the cavity and the second end of the optical module in turn and enters the housing 11. Furthermore, the test board also includes a first connector 303 and a second connector 304 arranged on the PCB board 400, wherein the first connector 303 has a socket plugged into the second end of the optical module, and the second connector 304 is used for electrical connection between the test board and the bit error tester.

[0100] In the present disclosure, on the one hand, the dry gas introduced into the vent hole passes through the cavity and the second end of the optical module in turn and enters the shell 11. The dry gas can effectively blow air to the second end of the optical module to prevent condensation, and the introduced dry gas can effectively control the humidity in the test environment in the shell to avoid the influence of excessive humidity on the performance of the optical module, thereby ensuring the consistency and reliability of the test results. On the other hand, during the temperature change process, especially when switching from low temperature to high temperature, if there is moisture inside the fixture, condensed water is easily generated. The use of dry gas helps to reduce or eliminate this phenomenon and protect the optical module from moisture damage. On the third hand, the dry gas can also be used as a cooling medium to help take away the heat generated by the optical module when it is working and maintain a stable test temperature, which is especially important for long-term tests.

[0101] refer to Figure 22, a specific example provided by the present disclosure includes: The error detector includes a gas source, a first speed regulator valve, a single-way solenoid valve, and a first main air pipe disposed in the test box body 210. The first speed regulator valve is disposed on the first main air pipe between the gas source and the input end of the single-way solenoid valve. The output end of the single-way solenoid valve is communicated with a tee through the first main air pipe, and the two air outlets of the tee are respectively provided with a first bronchial tube and a second bronchial tube. The first bronchial tube forms two paths of air through a tee, and the air blowing ports of the two paths of air are respectively air blowing port A and air blowing port B. Among them, air blowing port A and air blowing port B are respectively corresponding to communicate with the air inlet of the air flow channel 31 of the top plate 30. The second bronchial tube forms four paths of air through three tees in sequence, and the air blowing ports of the four paths of air are respectively air blowing port 1, air blowing port 2, air blowing port 3, and air blowing port 4. Air blowing port 1, air blowing port 2, air blowing port 3, and air blowing port 4 are respectively corresponding to communicate with the ventilation holes 302 corresponding to the four pallets 300.

[0102] In some embodiments, the pallet 300 is detachably connected to the side plate 50.

[0103] In some embodiments, referring to Figure 23 , the third temperature detection element (not shown in the figure) is telescopically disposed in the limiting structure 14 and corresponds to the insertion cavity 144 for measuring the temperature of the optical module in the insertion cavity 144. In a specific example, there are four limiting structures and four third temperature detection elements.

[0104] A specific example provided by the present disclosure includes: The error detector includes a gas source, a pressure regulating valve, a first four-way solenoid valve, and a second main air pipe disposed in the test box body 210. The pressure regulating valve is disposed on the second main air pipe between the gas source and the first four-way solenoid valve. The first four-way solenoid valve configures the air supply of the second main air pipe into four paths of air, and the air blowing ports of the four paths of air are respectively air blowing port side1, air blowing port side2, air blowing port side3, and air blowing port side4. Air blowing port side1, air blowing port side2, air blowing port side3, and air blowing port side4 are respectively corresponding to communicate with the corresponding third cylinder 305. The third cylinder is a pen-shaped cylinder, which is used to push the telescopic movement of the third temperature detection element.

[0105] In some embodiments, an exhaust hole (not shown in the figure) is provided on the housing 11, and the exhaust hole corresponds to the vortex position formed by the dry gas entering the housing 11 through the air flow channel 31.

[0106] In the present disclosure, on the one hand, when the dry gas enters through the air flow channel and forms a vortex, it can more effectively take away the heat in the optical module and its surrounding environment. The vortex position corresponds to the position of the exhaust hole, and the exhaust hole can be used to better discharge the heat carried by the vortex, thereby improving the heat exchange efficiency.

[0107] Secondly, by arranging the relative positions of the exhaust holes and the vortex, the airflow can be more evenly distributed in the test area, avoiding local overheating or uneven cooling, which helps maintain a stable test temperature environment.

[0108] Third, placing the exhaust hole near the vortex position is conducive to quickly removing moisture and maintaining a low relative humidity, which is very important for preventing the optical module from being damaged by moisture.

[0109] In some embodiments, the temperature control component includes a first temperature control component 12 and a second temperature control component 13. The first temperature control component 12 and the second temperature control component 13 are arranged in a relative spacing in the housing 11. Specifically, the first temperature control component 12 and the second temperature control component 13 are located opposite to each other and are respectively arranged at the top and the bottom of the housing, wherein the first temperature control component 12 and the second temperature control component 13 are spaced apart by a preset distance.

[0110] refer to Figure 3 The limiting bosses include a first limiting boss 142 and a second limiting boss 143. The limiting structure 14 is sandwiched between the first temperature control component 12 and the second temperature control component 13. The first limiting boss 142 and the second limiting boss 143 corresponding to the first temperature control component 12 and the second temperature control component 13 are respectively arranged on both sides of the limiting through hole 141. An insertion cavity 144 for accommodating the optical module to be tested is formed between the first limiting boss 142 and the second limiting boss 143, wherein the shape of the insertion cavity 144 is adapted to the shape of the optical module.

[0111] The driving mechanism is disposed in the housing 11 and is respectively connected to the first temperature control component 12 and the second temperature control component 13 to drive the first temperature control component 12 and the second temperature control component 13 to move toward the limiting structure 14 to abut against the optical module.

[0112] In the present disclosure, the first limiting boss 142 and the second limiting boss 143 can effectively limit the position of the optical module when it is inserted into the insertion cavity 144, avoiding position deviation of the optical module during the insertion process and causing wear. Further, in the direction where the second limiting boss 143 points to the first limiting boss 142, the edges of the first limiting boss 142 and the second limiting boss 143 do not exceed the limiting structure 14. Thus, when the optical module to be tested is inserted into the insertion cavity 144, the upper surface and the lower surface of the optical module to be tested are respectively lower than the upper surface and the lower surface of the limiting structure 14, that is, the first limiting boss 142 is lower than the upper surface of the limiting structure 14, and the second limiting boss is higher than the lower surface of the limiting structure 14. Thus, the first limiting boss 142 can form a certain gap between the first temperature control component 12 and the optical module, and the second limiting boss 143 can form a certain gap between the second temperature control component 13 and the optical module, thereby avoiding direct contact between the optical module and the first temperature control component 12 and the second temperature control component 13, and further avoiding wear of the optical module. Furthermore, by using the limiting effect of the first limiting boss 142 and the second limiting boss 143, the accuracy of the insertion position of the optical module can be ensured, thereby ensuring the structural stability of the connector connected to the optical module and ensuring its service life.

[0113] In some embodiments, the material of the limiting structure 14 is made of PIG (phosphor in glass fluorescent ceramic glass material). PIG has the characteristics of high heat resistance and high thermal conductivity of inorganic materials, which can significantly improve wear resistance.

[0114] In some embodiments, the material of the limiting structure 14 is made of self-lubricating material. The self-lubricating material includes non-metallic self-lubricating material or polymer self-lubricating material. Using the self-lubricating material can significantly reduce the friction force between the insertion cavity 144 and the optical module, thereby effectively reducing the wear degree.

[0115] In some embodiments, referring to Figures 4-6 , the limiting structure 14 includes a first limiting block 145 and a second limiting block 146 that are relatively spaced apart. The first limiting block 145 and the second limiting block 146 are correspondingly provided with a first limiting boss 142 at one end close to the first temperature control component 12, and the first limiting block 145 and the second limiting block 146 are correspondingly provided with a second limiting boss 143 at one end close to the second temperature control component 13. The first limiting boss 142 and the second limiting boss 143 respectively extend along the depth direction of the insertion cavity 144. It can be understood that the extension lengths of the first limiting boss 142 and the second limiting boss 143 are designed according to the actual contact lengths of the first limiting boss 142 and the second limiting boss 143 with the optical module.

[0116] In the present disclosure, by providing the first limiting boss 142 and the second limiting boss 143, circumferential positioning of the optical module inserted into the insertion cavity 144 can be achieved, thereby avoiding position deviation of the optical module during insertion and causing wear. On the other hand, the first limiting boss 142 and the second limiting boss 143 play a guiding role for the optical module in the length direction of the insertion cavity 144, which can effectively ensure the insertion accuracy of the optical module and avoid damage caused by inaccurate insertion.

[0117] In some embodiments, the limiting structure 14 is an integral structural member. An insertion cavity 144 and two limiting through holes 141 communicating with the upper and lower sides of the insertion cavity 144 are provided on the limiting structure 14. The length of the insertion cavity 144 extends along the insertion direction of the optical module. Using the integral structural member as the limiting structure 14 can effectively ensure the structural strength of the limiting structure 14 and is also beneficial to the maintenance of the device.

[0118] In some embodiments, referring to Figures 7-11 , the cylinder includes a first cylinder 15 and a second cylinder 16. The cylinder block of the first cylinder 15 is located on the side of the first temperature control component 12 away from the second temperature control component 13 and is connected to the housing 11. The first piston rod of the first cylinder 15 corresponds to the first temperature control component 12. The cylinder block of the second cylinder 16 is located on the side of the second temperature control component 13 away from the first temperature control component 12 and is connected to the housing 11. The second piston rod of the second cylinder 16 corresponds to the second temperature control component 13.

[0119] In the present disclosure, using the first cylinder 15 and the second cylinder 16 as the transmission mechanism can reduce production costs, and is easy to maintain and repair. In addition, the cylinder has the characteristic of fast response speed, can achieve fast start and stop, and meets the test requirements of the optical module. Further, the cylinder has the characteristic of adjustability and can adjust the transmission speed and force as required.

[0120] Referring to Figure 24 , a specific example provided by the present disclosure includes: there are four temperature control components and four cylinders. Each cylinder includes a first cylinder 15 and a second cylinder 16. The four first cylinders 15 and the four second cylinders 16 respectively correspond to the four temperature control components one by one. The error detector includes a gas source, a second speed regulating valve, a second four-way solenoid valve and a third main air pipe provided in the test box 210. The second speed regulating valve is provided on the third main air pipe between the gas source and the input end of the second speed regulating valve. The second four-way solenoid valve configures the four-way air formed by the air supply of the third main air pipe. The blowing ports of the four-way air are respectively the blowing ports top1, top2, top3 and top4, and the blowing ports top1, top2, top3 and top4 respectively communicate with the corresponding cylinders.

[0121] In some embodiments, the driving mechanism includes a first motor and a second motor. The first motor is located on the side of the first temperature control component 12 facing away from the second temperature control component 13 and is connected to the housing 11. The first motor is used to drive the first temperature control component 12 to move towards the insertion cavity 144. The second motor is located on the side of the second temperature control component 13 facing away from the first temperature control component 12 and is connected to the housing 11. The second motor is used to drive the second temperature control component 13 to move towards the insertion cavity 144.

[0122] In some embodiments, referring to Figure 5 , the first temperature control component 12 includes a first water cooling module 121, a first thermoelectric cooling module 122 (TEC Thermoelectric Cooling), and a first heat sink module 123. The first water cooling module 121 is in transmission connection with the driving mechanism. The first heat sink module 123 is located on the side of the limiting structure 14 facing away from the second temperature control component 13. The first thermoelectric cooling module 122 is clamped between the first water cooling module 121 and the first heat sink module 123.

[0123] Furthermore, the first piston rod of the first cylinder 15 is connected to the first water cooling module 121. The first water cooling module 121 includes a first water cooling base 1211 and a first water cooling head 1212. A first accommodation cavity is provided on the surface of the first water cooling base 1211 facing the first thermoelectric cooling module 122. The first water cooling head 1212 is disposed in the first accommodation cavity. A cooling flow channel is provided in the first water cooling head 1212 for the circulation of the cooling medium. The first water cooling head 1212 further includes a bell mouth provided at the inlet and outlet of the cooling flow channel, and a hose clamp provided on the bell mouth. The bell mouth is used to connect to the cooling pipeline. The first cylinder 15 is connected to the first water cooling base 1211.

[0124] In some embodiments, referring to Figure 2 and Figure 8 , the fixture 10 further includes a third limiting member 23. The third limiting member 23 is located on the side of the first temperature control component 12 facing away from the second temperature control component 13 and is connected to the housing 11. A first limiting groove 12111 is provided on the surface of the first water cooling base 1211 facing away from the first thermoelectric cooling module 122. The first limiting groove 12111 corresponds to the position of the third limiting member 23. When the first cylinder 15 contracts, the third limiting member 23 is used to abut against the first limiting groove 12111 to limit the contraction stroke of the first temperature control component 12.

[0125] In some embodiments, there are multiple third limiting members 23. A plurality of first limiting grooves 12111 are provided on the surface of the first water cooling base 1211 facing away from the first thermoelectric cooling module 122, and the multiple third limiting members 23 are arranged in one-to-one correspondence with the multiple first limiting grooves 12111. In the present disclosure, by providing the third limiting member and the first limiting groove 12111, the contraction stroke of the first cylinder 15 can be effectively limited.

[0126] The second temperature control component 13 includes a second water cooling module 131, a second thermoelectric cooling module 132 (TE C Thermoelectric Cooling), and a second heat sink module 133. The second water cooling module 131 is in transmission connection with the driving mechanism. The second heat sink module 133 is located on the side of the limiting structure 14 away from the first temperature control component 12. The second thermoelectric cooling module 132 is clamped between the second water cooling module 131 and the second heat sink module 133.

[0127] Further, the second piston rod of the second cylinder 16 is connected to the second water cooling module 131. The second water cooling module 131 includes a second water cooling seat 1311 and a second water cooling head 1312. A second accommodating cavity is provided on the surface of the second water cooling seat 1311 facing the second thermoelectric cooling module 132. The second water cooling head 1312 is arranged in the second accommodating cavity. A cooling flow channel is arranged in the second water cooling head 1312 for the circulation of the cooling medium. The second water cooling head 1312 further includes a pagoda head arranged at the inlet and outlet of the cooling flow channel, and a hose clamp arranged on the pagoda head. The pagoda head is used for connecting with the cooling pipeline. The second cylinder 16 is connected to the second water cooling seat 1311.

[0128] In some embodiments, the fixture 10 further includes a fourth limiting member 24. The fourth limiting member 24 is located on the side of the second temperature control component 13 away from the first temperature control component 12 and is connected to the housing 11. A second limiting groove (not shown in the figure) is provided on the surface of the second water cooling seat 1311 facing away from the second thermoelectric cooling module 132. The second limiting groove corresponds to the position of the fourth limiting member 24. When the second cylinder 16 contracts, the fourth limiting member 24 is used to abut against the second limiting groove to limit the contraction stroke of the second temperature control component 13.

[0129] In some embodiments, there are multiple fourth limiting members 24. A plurality of second limiting grooves are provided on the surface of the second water cooling seat 1311 facing away from the second thermoelectric cooling module 132, and the multiple fourth limiting members 24 are arranged in one-to-one correspondence with the multiple second limiting grooves. In the present disclosure, the arrangement of the fourth limiting member 24 and the second limiting groove can effectively limit the contraction stroke of the second cylinder 16.

[0130] In some embodiments, refer to Figure 7 and Figures 10-11 , the first heat sink module 123 includes a first heat sink 1231 and a first heat sink cover plate 1232 covering the first heat sink 1231. The first end of the first heat sink 1231 abuts against the first thermoelectric cooling module 122, and the second end of the first heat sink 1231 passes through the first heat sink cover plate 1232 and corresponds to the limiting through hole 141 of the limiting structure 14.

[0131] In a specific example provided by the present disclosure, on the side of the first heat sink cover plate 1232 facing the first heat sink 1231, there are provided a first avoidance through hole 12321 and a first installation groove 12322 surrounding the outside of the first avoidance through hole 12321. A first protruding portion 12311 protruding towards the first heat sink cover plate 1232 is provided at the second end of the first heat sink 1231. The first heat sink 1231 is disposed in the first installation groove 12322, and the first protruding portion 12311 passes through the first avoidance through hole 12321 and corresponds to the limit through hole 141. Among them, under the drive of the first cylinder 15, the first temperature control component 12 enables the first protruding portion 12311 to penetrate into the limit through hole 141 and extend into the insertion cavity 144 to abut against the optical module.

[0132] Furthermore, the first installation groove 12322 corresponds to the position of the first accommodation cavity, and the first heat sink cover plate 1232 is used to cover the first heat sink 1231 and the first semiconductor refrigeration module 122 in the first accommodation cavity. By adopting this setting method, it can play a protective role for the heat sink and the semiconductor refrigeration module, ensuring the normal use of the equipment.

[0133] The second heat sink module 133 includes a second heat sink 1331 and a second heat sink cover plate 1332 covering the second heat sink 1331. The first end of the second heat sink 1331 abuts against the second semiconductor refrigeration module 132, and the second end of the second heat sink 1331 passes through the second heat sink cover plate 1332 and corresponds to the limit through hole 141 of the limit structure 14.

[0134] In a specific example provided by the present disclosure, on the side of the second heat sink cover plate 1332 facing the second heat sink 1331, there are provided a second avoidance through hole 13321 and a second installation groove (not shown in the figure) surrounding the outside of the second avoidance through hole 13321. A second protruding portion 13311 protruding towards the second heat sink cover plate 1332 is provided at the second end of the second heat sink 1331. The second heat sink 1331 is disposed in the second installation groove, and the second protruding portion 13311 passes through the second avoidance through hole 13321 and corresponds to the limit through hole 141. Among them, under the drive of the second cylinder 16, the second temperature control component 13 enables the second protruding portion 13311 to penetrate into the limit through hole 141 and extend into the insertion cavity 144 to abut against the optical module.

[0135] Furthermore, the second installation groove corresponds to the position of the second accommodation cavity, and the second heat sink cover plate 1332 is used to cover the second heat sink 1331 and the second semiconductor refrigeration module 132 in the second accommodation cavity. By adopting this setting method, it can play a protective role for the heat sink and the semiconductor refrigeration module, ensuring the normal use of the equipment.

[0136] In some embodiments, the first heat sink module 123 further includes a first temperature detection element 1233, and the second heat sink module 133 further includes a second temperature detection element 1333. The first end of the first temperature detection element 1233 is inserted into the first heat sink 1231, and the second end of the first temperature detection element 1233 is fixed to the first heat sink cover plate 1232.

[0137] In some embodiments, referring to Figures 10-11 , a first insertion hole is provided on the first protrusion 12311, and the first end of the first temperature detection element 1233 is inserted into the first insertion hole.

[0138] In other embodiments, the first temperature detection element 1233 is bonded to the first heat sink cover plate 1232. By using the bonding method, the connection reliability between the first temperature detection element 1233 and the first heat sink cover plate 1232 can be ensured.

[0139] In some embodiments, referring to Figures 8-9 , the first end of the second temperature detection element 1333 is inserted into the second heat sink 1331, and the second end of the second temperature detection element 1333 is fixed to the second heat sink cover plate 1332.

[0140] In some embodiments, a second insertion hole is provided on the second protrusion 13311, and the first end of the second temperature detection element 1333 is inserted into the second insertion hole. The second heat sink module 133 further includes a fixing member 25 for fixing the second temperature detection element 1333 to the second heat sink cover plate 1332.

[0141] In a specific example provided by the present disclosure, a threaded hole is provided on the second heat sink cover plate 1332, and the fixing member 25 is a threaded connection member. Among them, the second temperature detection element 1333 is fixed to the second heat sink cover plate 1332 by the threaded connection between the threaded connection member and the threaded hole. It can be understood that the fixing method of the second temperature detection element 1333 to the second heat sink cover plate 1332 includes but is not limited to the threaded connection between the threaded connection member and the threaded hole, and can also be detachably fixed to the second heat sink cover plate 1332 by means of snap connection members, magnetic connection members or hook-and-loop connection members, etc.

[0142] In some embodiments, the second heat sink module 133 further includes a gasket 26 disposed between the fixing member 25 and the second temperature detection element 1333. Among them, by using the connection between the threaded connection member and the threaded hole, the gasket 26 is pressed against the second temperature detection element 1333 to fix the second temperature detection element 1333 to the second heat sink cover plate 1332. In the present disclosure, the connection between the threaded connection member and the threaded hole is detachable, which is convenient for subsequent maintenance of the second temperature detection element 1333 and the user experience.

[0143] In some other embodiments, the second temperature detection element 1333 is bonded to the second heat sink cover plate 1332. By using the bonding method, the connection reliability between the second temperature detection element 1333 and the second heat sink cover plate 1332 can be ensured.

[0144] In some embodiments, the fixture 10 further includes a guiding mechanism. The guiding mechanism is connected to the housing 11 and is movably connected to the first temperature control component 12 and / or the second temperature control component 13 to guide the movement of the first temperature control component 12 and / or the second temperature control component 13.

[0145] In some embodiments, refer to Figure 2 、 Figures 4-5 and Figure 8 , the guiding mechanism includes a first guiding member 17 and a second guiding member 18. The first end of the first guiding member 17 is connected to the housing 11, and the second end of the first guiding member 17 passes through the first temperature control component 12 to guide the movement of the first temperature control component 12.

[0146] In some embodiments, the guiding mechanism further includes a first limiting member 19, a first elastic member 20, a second limiting member 21, and a second elastic member 22. The first limiting member 19 and the first elastic member 20 are located on the side of the first water cooling base 1211 away from the top of the housing. The first limiting member 19 is disposed at the second end of the first guiding member 17, and the first elastic member 20 is clamped between the first temperature control component 12 and the first limiting member 19. The first elastic member 20 is used to provide a buffering and resetting force to the first temperature control component 12. Specifically, the first elastic member 20 is clamped between the first water cooling base 1211 and the first limiting member 19.

[0147] The second limiting member 21 and the second elastic member 22 are located on the side of the second water cooling base 1311 away from the bottom of the housing. The second limiting member 21 is disposed at the second end of the second guiding member 18, and the second elastic member 22 is clamped between the second temperature control component 13 and the second limiting member 21. The second elastic member 22 is used to provide a buffering and resetting force to the second temperature control component 13. Specifically, the second elastic member 22 is clamped between the second water cooling base 1311 and the second limiting member 21.

[0148] In some embodiments, both the first limiting member 19 and the first elastic member 20 are multiple. The multiple first limiting members 19 and the first elastic members 20 are arranged in one-to-one correspondence with the multiple first guiding members 17. In the present disclosure, the resetting force provided by the first elastic member 20 can reset the first temperature control component 12 to the initial position. The multiple first elastic members 20 arranged around the circumferential side of the first cylinder 15 can also level the first temperature control component 12 to ensure the flatness of the first temperature control component 12, and further ensure the abutting parallelism between the first protruding portion 12311 of the first heat sink 1231 and the optical module.

[0149] In some embodiments, both the second limiting member 21 and the second elastic member 22 are multiple. The multiple second limiting members 21 and the second elastic members 22 are arranged in one-to-one correspondence with the multiple second guiding members 18. In the present disclosure, the reset force provided by the second elastic member 22 can reset the second temperature control assembly 13 to the initial position. The multiple second elastic members 22 arranged around the circumferential side of the second cylinder 16 can also level the second temperature control assembly 13 to ensure the flatness of the second temperature control assembly 13, thereby ensuring the abutting parallelism between the second protruding portion 13311 of the second heat sink 1331 and the optical module.

[0150] In some embodiments, the first elastic member 20 and the second elastic member 22 are spring members.

[0151] In the present disclosure, the insertion state of the optical module includes: when the optical module is inserted into the insertion cavity of the limiting structure, the heat sink moves away from the limiting structure under the drive of the driving mechanism, so as to form a gap between the heat sink and the optical module. The test state of the optical module includes: before the test, the heat sink moves towards the limiting structure under the drive of the driving mechanism, so that the heat sink and the optical module are in contact. The semiconductor refrigeration module of the temperature control assembly adjusts the temperature of the optical module through the heat conduction characteristics of the heat sink.

[0152] In some embodiments, referring to Figure 21 , the present disclosure provides an optical module testing device 1. The optical module testing device 1 includes a test box body 210 and a fixture 10 for testing the optical module. The fixture 10 for testing the optical module is detachably connected to the test box body 210.

[0153] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A fixture for optical module testing, characterized in that, The fixture includes: a housing, which includes a top plate, a bottom plate, and side plates respectively connected to the top plate and the bottom plate. The side plates and the top plate and the bottom plate enclose an accommodation space; an air flow channel is provided on the top plate to introduce dry gas into the accommodation space; at least two temperature control components, which are arranged in the accommodation space; at least two limiting structures provided with limiting through holes, the limiting structures are arranged corresponding to the temperature control components, and an insertion cavity is provided in the limiting through hole for inserting the optical module to be measured; a driving mechanism, which is arranged in the accommodation space, and the driving mechanism is in transmission connection with any one of the temperature control components to drive the temperature control component to move in a direction close to the corresponding limiting structure to abut against the optical module.

2. The fixture for optical module testing according to claim 1, wherein The housing has a short axis direction and a long axis direction; The side plates include a first side plate and a second side plate arranged at intervals in the short axis direction, and a third side plate and a fourth side plate arranged at intervals in the long axis direction. The first side plate, the second side plate, the third side plate and the fourth side plate surround the periphery of the top plate and the bottom plate; wherein, The first side plate and the second side plate are respectively connected to the first end and the second end of the limiting structure, and the first side plate and the second side plate are respectively provided with a first avoidance opening and a second avoidance opening at positions corresponding to the insertion cavity.

3. The fixture for optical module testing according to claim 2, characterized in that, The first side plate includes a first sub-side plate and a second sub-side plate, and the second side plate includes a third sub-side plate and a fourth sub-side plate; The first ends of the first sub-side plate and the third sub-side plate are arranged on the bottom plate, and a step groove is provided at the second ends of the first sub-side plate and the third sub-side plate for placing the limiting structure; The second sub-side plate covers the outside of the first sub-side plate, and both ends of the second sub-side plate are respectively connected to the top plate and the bottom plate, and a first avoidance opening is provided at a position corresponding to the insertion cavity of the second sub-side plate; The first end of the fourth sub-side plate is connected to the top plate, the second end of the fourth sub-side plate is arranged at the second end of the third sub-side plate, and the fourth sub-side plate is arranged at an interval from the third sub-side plate at a position corresponding to the insertion cavity to form a second avoidance opening.

4. A fixture for optical module testing according to claim 2, wherein The fixture further includes a first air path component arranged on the top plate, the first air path component is communicated with the air inlet of the air flow channel, and the dry gas provided by the first air path component is introduced into the accommodation space through the air flow channel.

5. The fixture for optical module testing according to claim 2, characterized in that, The at least two temperature control components are arranged along the length direction of the top plate; The air flow channel includes a main air duct and a plurality of branch air ducts communicated with the main air duct. The main air duct is arranged along the length direction of the top plate; the branch air ducts are corresponding to the positions of the temperature control components, and the branch air ducts are arranged along the depth direction of the insertion cavity.

6. The fixture for optical module testing according to claim 5, characterized in that, Two air outlets corresponding to any one of the branch air ducts are provided on the top plate, both of the two air outlets are communicated with the accommodation space, and among the two air outlets corresponding to any one of the branch air ducts, one air outlet is corresponding to the position of the first end of the optical module to be measured, and the other air outlet is corresponding to the position of the second end of the optical module to be measured.

7. A fixture for optical module testing according to claim 4, characterized in that, The air inlet of the airflow channel is arranged on the surface of the top plate facing the second side plate, and the second side plate is provided with a first through groove corresponding to the position of the air inlet; wherein the first air path component penetrates into the first through groove and communicates with the air inlet of the airflow channel.

8. A fixture for optical module testing according to claim 2, characterized in that, The driving mechanism comprises a cylinder, the cylinder body of which is located at a side of the temperature control component away from the limiting structure and connected to the top plate, and the piston rod of the cylinder corresponds to the temperature control component; The fixture also includes a second air circuit assembly, which is arranged on the side of the top plate facing the second side plate; a second through groove is arranged on the second side plate at a position corresponding to the position of the second air circuit assembly; wherein the second air circuit assembly respectively penetrates the second through groove and the top plate to communicate with the cylinder body of the cylinder.

9. The fixture for optical module testing according to claim 2, wherein The temperature control component includes a water cooling module, a semiconductor refrigeration module and a heat sink module; the water cooling module is transmission-connected to the driving mechanism, the heat sink module is located on the side of the limiting structure facing the temperature control component, and the semiconductor refrigeration module is sandwiched between the water cooling module and the heat sink module; The fixture further comprises a water channel assembly, which is disposed on the third side plate and connected to the water cooling module, and is used to provide a water cooling medium to the water cooling module.

10. A fixture for optical module testing according to any one of claims 1-5, characterized in that, The fixture further comprises a humidity detection element, and the humidity detection element is used to detect the humidity of the gas in the accommodation space.

11. A fixture for optical module testing according to any one of claims 1-6, characterized in that, The fixture further comprises a test board, the test board comprises a support plate and a PCB board, the support plate corresponds to the insertion cavity and is arranged on the side plate; the support plate further comprises a groove and a vent hole connected to the groove; The PCB board cover is arranged in the groove, and defines a cavity communicating with the insertion cavity together with the support plate, the first end of the PCB board is provided with a socket for matching and connecting with the second end of the optical module to be tested, and the second end of the PCB board is used for electrically connecting with the bit error meter; The dry gas entering through the vent hole passes through the cavity and the second end of the optical module in sequence and enters the housing.

12. A fixture for optical module testing according to any one of claims 1-6, characterized in that, The housing is provided with an exhaust hole, and the exhaust hole corresponds to the position of the vortex formed by the dry gas entering from the air flow channel.

13. An optical module test device, characterized in that, The optical module testing equipment comprises a test box and a fixture for optical module testing according to any one of claims 1 to 12; the fixture for optical module testing is detachably connected to the test box.

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