CN113467009B - Optical module and network equipment - Google Patents
Optical module and network equipment Download PDFInfo
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- CN113467009B CN113467009B CN202010249451.4A CN202010249451A CN113467009B CN 113467009 B CN113467009 B CN 113467009B CN 202010249451 A CN202010249451 A CN 202010249451A CN 113467009 B CN113467009 B CN 113467009B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/4278—Electrical aspects related to pluggable or demountable opto-electronic or electronic elements
Abstract
The embodiment of the application provides an optical module and network equipment, relates to the technical field of network equipment, and enables the network equipment to be capable of being connected with optical communication equipment with more quantity, so that the capacity of an optical communication network is improved. The optical module comprises a shell, a plurality of light emitting and receiving components and a golden finger connector; the shell is provided with an electrical interface and a plurality of optical interfaces; the plurality of light emitting and receiving components are arranged in the shell and correspond to the plurality of optical interfaces one by one, and the optical connection end of each light emitting and receiving component is opposite to the corresponding optical interface of the light emitting and receiving component; the golden finger connector is positioned in the electric interface and electrically connected with the plurality of light emitting and receiving assemblies, and comprises a substrate and a plurality of pins arranged on the substrate, and the pins are arranged into a plurality of rows along the plugging direction of the golden finger connector. The optical module provided by the embodiment of the application is used for realizing conversion between optical signals and electric signals.
Description
Technical Field
The application relates to the technical field of network equipment, in particular to an optical module and network equipment.
Background
In an optical communication network, a network device such as an optical line terminal, a switch, etc. implements access of an optical communication device by an optical module connected to a board, and the larger the number of optical modules that can be connected to the board is, the larger the number of optical communication devices that can be accessed by the network device is, and the larger the capacity of the optical communication network is. With the rapid increase of the demand of people for information, the capacity of the existing optical communication network is directly challenged, a network device is required to be capable of accessing more optical communication devices, and the width of the edge on the single board of the network device, which is used for setting the slot connector for connecting the optical module, is limited, so that the number of the slot connectors which can be set on the edge is limited, the number of the optical modules which can be connected on the single board is limited, and the number of the optical communication devices which can be accessed by the network device is limited.
Disclosure of Invention
Embodiments of the present application provide an optical module and a network device, so that the network device can access a greater number of optical communication devices, and capacity of an optical communication network is improved.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
in a first aspect, some embodiments of the present application provide a light module, including a housing, a plurality of light emitting and receiving components, and a gold finger connector; the shell is provided with an electrical interface and a plurality of optical interfaces; the light emitting and receiving assemblies are arranged in the shell, the number of the light emitting and receiving assemblies is equal to that of the light interfaces, the light emitting and receiving assemblies correspond to the light interfaces one by one, and the light connection end of each light emitting and receiving assembly is opposite to the light interface corresponding to the light emitting and receiving assembly; the golden finger connector is positioned in the electric interface and electrically connected with the plurality of light emitting and receiving components, and comprises a substrate and a plurality of pins arranged on the substrate, wherein the pins are arranged in a plurality of rows along the plugging direction of the golden finger connector.
The optical module provided by the embodiment of the application, because the golden finger connector of the optical module is electrically connected with the plurality of light emitting and receiving assemblies, and because the golden finger connector comprises a substrate and a plurality of pins arranged on the substrate, the plurality of pins are arranged into a plurality of rows along the plugging direction of the golden finger connector, therefore, under the condition that the width of the golden finger connector is not increased, more pins can be arranged in the golden finger connector, so that the plurality of light emitting and receiving assemblies can share one golden finger connector, so that the plurality of light emitting and receiving assemblies can be integrated in one optical module, so that the network equipment can be simultaneously accessed into a plurality of optical communication equipment through one optical module, so that the number of the optical communication equipment which can be accessed by the network equipment can be increased, and the capacity of an optical communication network is improved.
Optionally, the substrate has a first surface and a second surface opposite to each other, a portion of the plurality of leads is disposed on the first surface, and the rest of the plurality of leads is disposed on the second surface. Therefore, the pins are distributed on the first surface and the second surface in a dispersing mode, under the condition that the width of the golden finger connector is not increased, more pins can be arranged on the substrate, the golden finger connector can be connected with more light emitting and receiving assemblies, the number of optical communication devices which can be accessed by the network device can be further increased, and the capacity of an optical communication network is improved.
Optionally, the pins on the first surface are arranged in two rows along the plugging direction of the gold finger connector, and the pins on the second surface are arranged in two rows along the plugging direction of the gold finger connector. Therefore, the arrangement number of the pins on the first surface and the second surface is moderate, the capacity of an optical communication network can be improved, and meanwhile, the occupied board area of the slot connector on a single board is reduced.
Optionally, the distance between two adjacent pins in each row of pins on the first surface and the second surface is 0.8mm, and the width of each pin is 0.5 mm.
Optionally, the number of pins in each row of pins on the first surface and the second surface are equal. That is, the number of the pins in the multiple rows of pins on the first surface is equal, the number of the pins in the multiple rows of pins on the second surface is equal, and the number of the pins in each row of pins on the first surface is equal to the number of the pins in each row of pins on the second surface. Like this, the pin distributes evenly on first surface and second surface, under the condition of the width that does not increase golden finger connector, can set up more quantity of pin on the base plate for golden finger connector can connect more quantity of emission of light receiving element, thereby can further increase the quantity of the optical communication equipment that network equipment can insert, promotes the capacity of optical communication network.
Optionally, the number of pins in each row of pins on the first surface and the second surface is 11.
Optionally, a first transition structure is arranged between the front row of pins and the rear row of pins on the first surface and the second surface of the substrate along the plugging direction of the gold finger connector, the first transition structure and the front row of pins and the rear row of pins are arranged at intervals, and the height of the first transition structure protruding out of the surface of the substrate is equal to the height of the front row of pins protruding out of the surface of the substrate. Therefore, the first transition structure can play a smoothing role to avoid the situation that the golden finger connector is inserted into the slot connector in a non-smooth or stuck state.
Optionally, along the plugging direction of the gold finger connector, on the first surface and the second surface of the substrate, a row of pins close to the front end of the gold finger connector is a first row of pins, and the front ends of the first row of pins are not flush; in the first row of pins, the pin with the minimum distance between the front end and the front end of the golden finger connector is a first pin, one side of the other pins except the first pin, close to the front end of the golden finger connector, in the first row of pins is provided with a second transition structure, the height of the surface of the second transition structure protruding out of the substrate is equal to the height of the surface of the first row of pins protruding out of the substrate, and the front end of the second transition structure is flush with the front end of the first pin. Therefore, the second transition structure further plays a smoothing role, so that the situation that the golden finger connector is inserted into the slot connector in a non-smooth or stuck mode in the process of inserting the golden finger connector into the slot connector is avoided.
Optionally, the plurality of pins include a power pin, the power pin is electrically connected with the plurality of light emitting and receiving components, and a slow start circuit is connected in series in an electrical connection line between the power pin and the plurality of light emitting and receiving components; the pins further comprise power supply control pins, the power supply control pins are connected with the slow starting circuit and used for transmitting switch control signals to the slow starting circuit, and the switch of the slow starting circuit can be controlled through the switch control signals. Therefore, a slow starting circuit does not need to be arranged on the single board, and the structural complexity of the single board can be reduced.
Optionally, the power pins include a plurality of transmit power pins and a plurality of receive power pins; the number of the plurality of transmitting power supply pins is equal to that of the plurality of light emitting and receiving assemblies, the plurality of transmitting power supply pins correspond to the plurality of light emitting and receiving assemblies one by one, and each transmitting power supply pin is used for supplying power to the light emitting assembly in the light emitting and receiving assembly corresponding to the transmitting power supply pin; the number of the plurality of receiving power supply pins is equal to that of the plurality of light emitting and receiving assemblies, the plurality of receiving power supply pins correspond to the plurality of light emitting and receiving assemblies one by one, and each receiving power supply pin is used for supplying power to the light receiving assembly in the light emitting and receiving assembly corresponding to the receiving power supply pin. Therefore, the light emitting components and the light receiving components of the light emitting and receiving components are respectively supplied with power through the plurality of transmitting power supply pins and the plurality of receiving power supply pins, and power supply circuits are independent from each other and are convenient for power supply control and management.
Optionally, each row of pins on the first surface has a ground pin therein, and the ground pin is located at an end of the row of pins. In this way, the ground pins may provide electrical shielding and wear protection for the signal pins within the row of pins.
Optionally, each row of pins on the second surface has a ground pin therein, and the ground pin is located at an end of the row of pins. In this way, the ground pins may provide electrical shielding and wear protection for the signal pins within the row of pins.
Alternatively, the plurality of light emitting and receiving elements are stacked and arranged in a direction perpendicular to the substrate. Therefore, the width of the whole optical module can be reduced, the reduction of the distance between two adjacent slot connectors on the single board is facilitated, so that more slot connectors can be arranged on the single board, more optical film blocks can be connected, the number of optical communication devices which can be accessed by the network equipment is further increased, and the capacity of an optical communication network is improved.
Optionally, the number of the plurality of light emitting and receiving components is two.
Optionally, each light emitting and receiving assembly comprises a light emitting assembly, a light receiving assembly and a wavelength division multiplexer; the light emitting assembly includes a plurality of light emitting channels and the light receiving assembly includes a plurality of light receiving channels. Therefore, one light emitting component integrates a plurality of light emitting channels, one light receiving component integrates a plurality of light receiving channels, the number of optical communication devices which can be accessed by the network device can be further increased, and the capacity of the optical communication network is improved.
Optionally, the optical transmitting assembly comprises a 1Gbit/s optical transmitting channel and a 10Gbit/s optical transmitting channel, and the optical receiving assembly comprises a 1Gbit/s optical receiving channel and a 10Gbit/s optical receiving channel. Therefore, high-speed and low-speed matching can be realized so as to meet the requirements of different accessed optical communication equipment on different communication rates.
In a second aspect, some embodiments of the present application provide a network device, where the network device includes a single board and an optical module; the single board is provided with a slot connector; the optical module is the optical module according to any one of the above technical solutions, and the golden finger connector of the optical module is inserted into the slot connector in a matching manner.
Since the optical module used in the network device according to the embodiment of the present application is the same as the optical module described in any of the above technical solutions, the two optical modules can solve the same technical problem and achieve the same expected effect.
Optionally, the length of the slot connector is 11.8mm ± 0.5mm, the width of the slot connector is 11.5mm ± 0.5mm, and the height of the slot connector is 6.8mm ± 0.5 mm.
Drawings
Fig. 1 is a schematic structural diagram of a network device according to some embodiments of the present application;
fig. 2 is a schematic structural diagram of an optical module according to some embodiments of the present application;
FIG. 3 is an exploded view of the optical module shown in FIG. 2;
fig. 4 is a schematic structural diagram of a gold finger connector of a light module according to some embodiments of the present disclosure;
fig. 5 is a schematic structural diagram of the gold finger connector of the optical module shown in fig. 4, as seen from the direction a;
fig. 6 is a schematic back structure diagram of the gold finger connector of the optical module shown in fig. 4;
fig. 7 is a block diagram of an optical module according to some embodiments of the present application;
fig. 8 is a schematic structural diagram of a first surface of a substrate of a gold finger connector of the optical module shown in fig. 7;
fig. 9 is a schematic structural diagram of a second surface of the substrate of the gold finger connector of the optical module shown in fig. 7.
Reference numerals are as follows:
1-single board; 11-a socket connector; 2-an optical module; 21-a housing; 211-a base; 212-a cover plate; 22-a light emitting receiving assembly; 221-a first light emitting receiving assembly; 222-a second light emitting receiving component; 2211 — a first light emitting assembly; 22111 — a first light emission channel; 22112-a second light emission channel; 2212-a first light receiving assembly; 22121 — first light-receiving channel; 22122-a second light receiving channel; 2213-a first wavelength division multiplexer; 2221 — a second light emitting assembly; 22211-third light emission channel; 22212-fourth light emission channel; 2222 — a second light receiving element; 22221 — third light-receiving channel; 22222-fourth light receiving channel; 2223-second wavelength division multiplexer; 23-gold finger connector; 231-a substrate; 2311-a first surface; 2312-a second surface; 232-pin; 233-a first transition structure; 234-second transition structure.
Detailed Description
In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In order to increase the number of optical communication devices that can be accessed by the network device, the number of slot connectors used for connecting the optical modules on the board may be increased, so that the board can connect more optical modules, and thus access more optical communication devices through the more optical modules. However, the width of the edge on the single board for setting the slot connector is limited, so that the number of the slot connectors that can be set on the single board is limited, the number of the optical modules that can be connected by the single board is limited, and the number of the optical communication devices that can be accessed by the network device is limited.
In order to solve this problem, the number of bi-directional optical sub-assembly (BOSA) integrated by a single optical module may be increased, and all the optical transceiver modules may share a gold finger connector to connect with a slot connector on a single board. In this way, a single optical module can realize the functions of a plurality of optical modules, and the optical module is connected with only one slot connector on the single board, so that the number of the slot connectors arranged on the single board does not need to be increased, and the limitation of the width of the single board is avoided, and the number of optical communication devices which can be accessed by the network device can be increased. However, since all the light emitting and receiving components in the optical module share one gold finger connector, the number of pins of the gold finger connector is large, the width of the slot connector on the board is large, and the occupied width of the slot connector on the board is large, so that the number of the optical communication devices that the network device can access is still limited by the width of the board.
To solve this problem, embodiments of the present application provide a network device including, but not limited to, an optical line terminal and a switch.
Fig. 1 is a schematic structural diagram of a network device according to some embodiments of the present application. As shown in fig. 1, the network device includes a single board 1 and an optical module 2. The board 1 is also a circuit board, and the board 1 has a whole set of circuits capable of implementing functions of the network device. The single board 1 is provided with at least one slot connector 11, and fig. 1 only shows an embodiment in which the number of the slot connectors 11 is three, and the number of the slot connectors 11 is not limited. The number of the optical modules 2 is at least one, the number of the at least one optical module 2 is equal to the number of the at least one slot connector 11, the at least one optical module 2 corresponds to the at least one slot connector 11 one by one, and the golden finger connector of each optical module 2 is inserted into the slot connector 11 corresponding to the optical module 2.
In the above embodiment, the size of the slot connector 11 is not particularly limited, for example, the length of the slot connector 11 (i.e. the maximum width of the slot connector 11 along the plugging direction) may be 11.8mm ± 0.5mm, the width of the slot connector 11 (i.e. the maximum width of the slot connector 11 in the direction perpendicular to the plugging direction and parallel to the single board 1) may be 11.5mm ± 0.5mm, and the height of the slot connector 11 (i.e. the maximum width of the slot connector 11 in the direction perpendicular to the single board 1) may be 6.8mm ± 0.5 mm.
Fig. 2 is a schematic structural diagram of an optical module 2 according to some embodiments of the present application. As shown in fig. 2, the optical module 2 includes a housing 21. The material of the housing 21 includes, but is not limited to, metal and plastic. The housing 21 includes a base 211 and a cover 212 detachably connected. The housing 21 is provided with an electrical interface a and a plurality of optical interfaces b. The electrical interface a is used to connect the socket connector 11 of the board 1. The optical interface b is used for connecting optical waveguides (such as optical fibers), and includes but is not limited to an SC-type optical fiber interface. The number of the optical interfaces b may be two, three, or four, and is not particularly limited herein. Fig. 2 only shows an embodiment in which the number of optical interfaces b is two, and the number of optical interfaces b is not limited.
Fig. 3 is an exploded view of the optical module shown in fig. 2. As shown in fig. 3, the light module 2 further includes a plurality of light emitting and receiving components 22. The plurality of light emitting/receiving elements 22 are disposed in the housing 21, the number of the plurality of light emitting/receiving elements 22 is equal to the number of the plurality of light interfaces b, the plurality of light emitting/receiving elements 22 correspond to the plurality of light interfaces b one to one, and the light connection end of each light emitting/receiving element 22 is opposite to the light interface b corresponding to the light emitting/receiving element 22.
Note that the optical transmit receive module 22 includes an optical transmit sub-assembly (TOSA), an optical receive sub-assembly (ROSA), and a wavelength division multiplexer. Wavelength division multiplexer has first end, second end and third end, and wavelength division multiplexer can couple the optical signal coupling of first end input to the second end output to the optical signal coupling of second end input is to the third end output, and TOSA's output is connected with wavelength division multiplexer's first end, and ROSA's input and wavelength division multiplexer's third end are connected. It can be seen that the optical connection end of the optical transceiver module 22 is also the second end of the wavelength division multiplexer.
As shown in fig. 3, the light module 2 further includes a gold finger connector 23. The golden finger connectors 23 are positioned in the electrical interface a, and the golden finger connectors 23 are electrically connected with the plurality of light emission receiving components 22. Fig. 4 is a schematic structural diagram of the gold finger connector 23 of the optical module 2 according to some embodiments of the present application. As shown in fig. 4, the gold finger connector 23 includes a substrate 231 and a plurality of pins 232 disposed on the substrate 231, wherein the plurality of pins 232 are arranged in a plurality of rows along the plugging direction of the gold finger connector 23.
In the optical module provided by the embodiment of the application, since the golden finger connectors 23 of the optical module 23 are electrically connected with the plurality of light emitting and receiving components 22, and since the gold finger connector 23 comprises the substrate 231 and the plurality of pins 232 disposed on the substrate 231, the plurality of pins 232 are arranged in a plurality of rows along the plugging direction of the gold finger connector 23, so that the width of the gold finger connector 23 can be increased without increasing the width of the gold finger connector 23, a larger number of pins are provided in the gold finger connector 23, so that a plurality of light emission reception elements 22 can share one gold finger connector 23, so that a plurality of light emitting and receiving assemblies 22 can be integrated in one optical module 2, so that a network device can simultaneously access a plurality of optical communication devices through one optical module 2, therefore, the number of optical communication devices which can be accessed by the network device can be increased, and the capacity of the optical communication network is improved.
The plurality of leads 232 may be disposed on one surface of the substrate 231, or disposed on two surfaces of the substrate 231, which is not limited herein. In some embodiments, fig. 5 is a schematic structural diagram of the golden finger connector of the optical module shown in fig. 4, as seen from the direction a, and fig. 6 is a schematic structural diagram of a back surface of the golden finger connector of the optical module shown in fig. 4. As shown in fig. 4, 5 and 6, the substrate 231 has a first surface 2311 and a second surface 2312 opposite to each other, a portion of the leads 232 are disposed on the first surface 2311, and the rest of the leads 232 are disposed on the second surface 2312. In this way, the plurality of pins 232 are dispersedly disposed on the first surface 2311 and the second surface 2312, and a larger number of pins can be disposed on the substrate 231 without increasing the width of the gold finger connector 23, so that the gold finger connector 23 can be connected with a larger number of light emitting and receiving components 22, and thus the number of optical communication devices that can be accessed by the network device can be further increased, and the capacity of the optical communication network can be improved.
In the above embodiments, the pins on the first surface 2311 may be arranged in two rows, three rows or four rows along the plugging direction of the gold finger connector 23, which is not limited herein. With the increase of the number of rows of the pins arranged on the first surface 2311, the length of the gold finger connector 23 along the plugging direction thereof is larger, the length of the slot connector 11 matched therewith along the plugging direction is larger, and the occupied area on the single board 1 is larger. In order to increase the capacity of the optical communication network and reduce the board occupation area of the socket connector 11 on the single board 1, in some embodiments, as shown in fig. 4, the pins on the first surface 2311 are arranged in two rows along the plugging direction of the gold finger connector 23, which are two rows along two dotted lines in fig. 4. In this way, the number of rows of pins on the first surface 2311 is moderate, so that the capacity of an optical communication network can be increased, and the board occupation area of the slot connector 11 on the single board 1 can be reduced.
Similarly, the pins on the second surface 2312 may be arranged in two rows, three rows or four rows along the plugging direction of the gold finger connector 23, which is not limited herein. With the increase of the number of rows of pins arranged on the second surface 2312, the longer the gold finger connector 23 along the plugging direction thereof is, the longer the length of the socket connector 11 along the plugging direction matched therewith is, and the larger the occupied area on the single board 1 is. In order to reduce the board occupation area of the slot connector 11 on the single board 1 while increasing the capacity of the optical communication network, in some embodiments, as shown in fig. 6, the pins on the second surface 2312 are arranged in two rows along the plugging direction of the gold finger connectors 23, which are two rows along the two dotted lines in fig. 6 respectively. In this way, the number of rows of pins on the second surface 2312 is moderate, so that the capacity of an optical communication network can be increased, and the board occupation area of the slot connector 11 on the single board 1 can be reduced.
In some embodiments, the pitch between two adjacent pins in each row of pins on the first surface 2311 and the second surface 2312 is 0.8mm, and the width of each pin (i.e., the width along the arrangement direction of the row of pins where the pin is located) is 0.5 mm.
The number of the leads in the plurality of rows of leads on the first surface 2311 and the second surface 2312 may be equal or different, and is not particularly limited herein. In some embodiments, as shown in fig. 4 and 6, the number of pins in each row of pins on the first surface 2311 and the second surface 2312 are equal. That is, the number of the pins in the multiple rows of pins on the first surface 2311 is equal, the number of the pins in the multiple rows of pins on the second surface 2312 is equal, and the number of the pins in each row of pins on the first surface 2311 is equal to the number of the pins in each row of pins on the second surface 2312. In this way, the pins are uniformly distributed on the first surface 2311 and the second surface 2312, and under the condition that the width of the gold finger connector 23 is not increased, a greater number of pins can be arranged on the substrate 231, so that the gold finger connector 23 can be connected with a greater number of light emitting and receiving components 22, thereby further increasing the number of optical communication devices that can be accessed by the network device, and improving the capacity of the optical communication network.
In the above embodiments, the number of pins in each row of pins on the first surface 2311 and the second surface 2312 may be 9, 10, 11 or 12, which is not limited herein. In some embodiments, as shown in fig. 4 and 6, the number of pins in each row of pins on the first surface 2311 and the second surface 2312 is 11.
In the plurality of pins 232, the pins for implementing different functions are generally different in length, for example, the length of the ground pin is generally greater than that of the power pin, the length of the power pin is generally greater than that of the signal pin, and when the plurality of pins with different lengths are arranged in a row, as shown in fig. 4 and 6, the pins are generally arranged with the midpoint of the pins along the length direction thereof as a reference. Therefore, gaps can occur between two adjacent rows of pins and at the front side of the front row of pins, and the gaps can cause the situation that the golden finger connector 23 is not smoothly inserted or is stuck in the process of being inserted into the slot connector 11.
To avoid this, in some embodiments, as shown in fig. 4 and fig. 6, a first transition structure 233 is disposed between two rows of pins adjacent to each other on the first surface 2311 and the second surface 2312 of the substrate 231 along the plugging direction of the gold finger connector 23, the first transition structure 233 is spaced from the two rows of pins adjacent to each other, and the height of the surface of the first transition structure 233 protruding out of the substrate 231 is equal to the height of the surface of the substrate 231 protruding out of the two rows of pins adjacent to each other. In this way, the first transition structure 233 can perform a smoothing function, so as to prevent the golden finger connector 23 from being inserted into the slot connector 11 in a non-smooth manner or being stuck.
In some embodiments, as shown in fig. 4 and 6, along the plugging direction of the gold finger connector 23, the row of pins on the first surface 2311 and the second surface 2312 of the substrate 231 near the front end of the gold finger connector 23 is the first row of pins c. The front ends of the first row of pins c are not flush. In the first row of pins c, the pin with the smallest distance between the front end and the front end of the gold finger connector 23 is the first pin d, one side of the other pins in the first row of pins c except the first pin d, which is close to the front end of the gold finger connector 23, is provided with the second transition structure 234, the height of the second transition structure 234 protruding out of the surface of the substrate 231 is equal to the height of the first row of pins c protruding out of the surface of the substrate 231, and the front end of the second transition structure 234 is flush with the front end of the first pin d. In this way, the second transition structure 234 further plays a smoothing role to avoid the situation that the golden finger connector 23 is inserted into the slot connector 11 in a non-smooth manner or is stuck.
Fig. 8 is a diagram illustrating the definition of the leads on the first surface 2311 of the substrate 231 of the gold finger connector 23 in the optical module 2 according to some embodiments of the present application, and fig. 9 is a diagram illustrating the definition of the leads on the second surface 2312 of the substrate 231 of the gold finger connector 23 in the optical module 2 according to some embodiments of the present application. In some embodiments, as shown in fig. 8 and 9, the plurality of pins 232 include power pins (e.g., including VCCR0, VCCT0, VCCR1, and VCCT1), the power pins are electrically connected to the plurality of light emitting and receiving components 22, and a slow start circuit (not shown) is connected in series in an electrical connection line between the power pins and the plurality of light emitting and receiving components 22. The plurality of pins 232 further include a power control pin (e.g., Pow _ Ctrl in fig. 8) connected to the slow start circuit, the power control pin being used to transmit a switch control signal to the slow start circuit, and the switch of the slow start circuit can be controlled by the switch control signal. Thus, a slow start circuit does not need to be arranged on the single board 1, and the structural complexity of the single board 1 can be reduced.
In some embodiments, as shown in fig. 8 and 9, the power pins include a plurality of transmit power pins (such as VCCT0 and VCCT1) and a plurality of receive power pins (such as VCCR0 and VCCR 1). The number of the plurality of transmission power pins is equal to the number of the plurality of light emitting and receiving components 22, and the plurality of transmission power pins correspond to the plurality of light emitting and receiving components 22 one by one, and each transmission power pin is used for transmitting power to the light emitting component in the light emitting and receiving component 22 corresponding to the transmission power pin. The number of the plurality of receiving power supply pins is equal to the number of the plurality of light emitting/receiving elements 22, and the plurality of receiving power supply pins correspond to the plurality of light emitting/receiving elements 22 one by one, and each receiving power supply pin is used for supplying power to the light receiving element in the light emitting/receiving element 22 corresponding to the receiving power supply pin. Therefore, the light emitting components and the light receiving components of the light emitting and receiving components are respectively supplied with power through the plurality of transmitting power supply pins and the plurality of receiving power supply pins, and power supply circuits are independent from each other and are convenient for power supply control and management.
In some embodiments, as shown in fig. 8, each row of pins on the first surface 2311 has a ground pin (GND) therein, which is located at an end of the row of pins. In this way, the ground pins may provide electrical shielding and wear protection for the signal pins within the row of pins.
In some embodiments, as shown in fig. 9, each row of pins on the second surface 2312 has a ground pin (GND) therein, which is located at an end of the row of pins. In this way, the ground pins may provide electrical shielding and wear protection for the signal pins within the row of pins.
The plurality of light emitting and receiving modules 22 may be arranged side by side or stacked in the housing 21, and are not particularly limited herein. In some embodiments, as shown in fig. 3, a plurality of light receiving and emitting modules 22 are stacked and arranged in a direction perpendicular to the substrate 231. Therefore, the width of the whole optical module 2 can be reduced, which is beneficial to reducing the distance between two adjacent slot connectors on the veneer 1, so that more slot connectors can be arranged on the veneer 1, and more optical film blocks 2 can be connected, thereby further increasing the number of optical communication devices which can be accessed by the network equipment and improving the capacity of the optical communication network.
The number of the plurality of light-emitting/receiving elements 22 may be two, three, or four, etc., and is not particularly limited herein. In some embodiments, as shown in FIG. 3, the number of the plurality of light receiving and emitting assemblies 22 is two.
As can be seen from the foregoing description, the light emitting and receiving assembly 22 includes a light emitting assembly, a light receiving assembly, and a wavelength division multiplexer. The light emitting assembly may include one light emitting channel or a plurality of light emitting channels, and is not limited in particular. The light receiving module may include one light receiving channel, and may also include a plurality of light receiving channels, which are not specifically limited herein.
In some embodiments, the light emitting assembly includes a plurality of light emitting channels that emit light of different wavelengths, such as light emitting channels that include light of 1577nm wavelength and light emitting channels that include light of 1490nm wavelength. Therefore, one light emitting component integrates a plurality of light emitting channels, the number of optical communication devices which can be accessed by the network device can be further increased, and the capacity of an optical communication network is improved.
In the above embodiments, the emission rates of the plurality of light emission channels may be the same or different, and are not limited specifically herein. And the transmission rate of the plurality of light transmission channels may be 1Gbit/s, 5Gbit/s or 10Gbit/s, which is not limited herein. In some embodiments, the optical transmit assembly includes 1Gbit/s and 10Gbit/s optical transmit channels. Therefore, high-speed and low-speed matching can be realized to meet the requirements of different accessed optical communication devices.
In some embodiments, the light receiving assembly includes a plurality of light receiving channels that receive light at different wavelengths, such as a light receiving channel that includes light at a wavelength of 1310nm and a light receiving channel that includes light at a wavelength of 1270 nm. Therefore, one optical receiving component integrates a plurality of optical receiving channels, the number of optical communication devices which can be accessed by the network device can be further increased, and the capacity of the optical communication network is improved.
In the above embodiment, the receiving rates of the multiple light receiving channels may be the same or different, and are not limited in detail here. And the receiving rate of the plurality of optical receiving channels may be 1Gbit/s, 5Gbit/s, or 10Gbit/s, which is not limited herein. In some embodiments, the optical receive assembly includes 1Gbit/s rate optical receive channels and 10Gbit/s rate optical receive channels. Therefore, high-speed and low-speed matching can be realized so as to meet the requirements of different accessed optical communication devices on different communication rates.
Fig. 7 is a block diagram of an optical module 2 according to some embodiments of the present application. As shown in fig. 7, the number of the light emitting and receiving elements 22 integrated in the light module 2 is two, and the two light emitting and receiving elements 22 are a first light emitting and receiving element 221 and a second light emitting and receiving element 222, respectively. The first light emitting receiving assembly 221 includes a first light emitting assembly 2211, a first light receiving assembly 2212 and a first wavelength division multiplexer 2213, the first light emitting assembly 2211 includes a first light emitting passage 22111 and a second light emitting passage 22112, and the first light receiving assembly 2212 includes a first light receiving passage 22121 and a second light receiving passage 22122. The second light emitting and receiving module 222 includes a second light emitting module 2221, a second light receiving module 2222, and a second wavelength division multiplexer 2223, the second light emitting module 2221 includes a third light emitting path 22211 and a fourth light emitting path 22212, and the second light receiving module 2222 includes a third light receiving path 22221 and a fourth light receiving path 22222. The first and third light transmission channels 22111 and 22211 are 1Gbit/s rate light transmission channels. The first 22121 and third 22221 optical receive channels are 1Gbit/s rate optical receive channels. The second light emission channel 22112 and the fourth light emission channel 22212 are 10Gbit/s rate light emission channels. The second and fourth optical receive channels 22122 and 22222 are optical receive channels having a receive rate selectable between 5Gbit/s and 10 Gbit/s.
Fig. 8 is a schematic structural diagram of the first surface 2311 of the substrate 231 of the gold finger connector 23 of the optical module 2 shown in fig. 7, and fig. 9 is a schematic structural diagram of the second surface 2312 of the substrate 231 of the gold finger connector 23 of the optical module 2 shown in fig. 7. As can be seen from fig. 8 and 9, the serial numbers (labeled in fig. 8 and 9), names and functions of the pins on the gold finger connector 23 are shown in table 1. The structure is simple and easy to realize.
TABLE 1
It should be noted that table 1 only gives an example of the definition of the pin 232, and does not limit the embodiments of the present application.
The particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (11)
1. A light module, comprising:
the shell is provided with an electrical interface and a plurality of optical interfaces;
the light emitting and receiving assemblies are arranged in the shell, the number of the light emitting and receiving assemblies is equal to that of the light interfaces, the light emitting and receiving assemblies correspond to the light interfaces one by one, and the optical connection end of each light emitting and receiving assembly is opposite to the corresponding light interface of the light emitting and receiving assembly;
the golden finger connector is positioned in the electric interface and electrically connected with the plurality of light emitting and receiving components, the golden finger connector comprises a substrate and a plurality of pins arranged on the substrate, and the plurality of pins are arranged in a plurality of rows along the plugging direction of the golden finger connector;
the substrate is provided with a first surface and a second surface which are opposite, a part of the pins in the plurality of pins are arranged on the first surface, and the rest pins in the plurality of pins are arranged on the second surface;
along the inserting direction of the golden finger connector, a first transition structure is arranged between two rows of pins adjacent to the front and the back on the first surface and the second surface of the substrate, the first transition structure and the two rows of pins adjacent to the front and the back are arranged at intervals, and the height of the first transition structure protruding out of the surface of the substrate is equal to the height of the two rows of pins adjacent to the front and the back protruding out of the surface of the substrate.
2. The optical module of claim 1, wherein the pins on the first surface are arranged in two rows along the plugging direction of the gold finger connector, and the pins on the second surface are arranged in two rows along the plugging direction of the gold finger connector.
3. The optical module of claim 1 or 2, wherein the number of pins in each row of pins on the first surface and the second surface are equal.
4. The optical module of claim 3, wherein the number of pins in each row of pins on the first surface and the second surface is 11.
5. The optical module according to any one of claims 1 to 4, wherein, along the plugging direction of the golden finger connector, a row of pins on the first surface and the second surface of the substrate, which are close to the front end of the golden finger connector, is a first row of pins, and the front ends of the first row of pins are not flush;
in the first row of pins, the pin with the minimum distance between the front end of golden finger connector is first pin, except that in the first row of pin all the other pins of first pin are close to one side of the front end of golden finger connector all is equipped with second transition structure, second transition structure protrusion the height on the surface of base plate with first row of pin protrusion the height on first surface equals, just the front end of second transition structure with the front end parallel and level of first pin.
6. The optical module according to any one of claims 1 to 5, wherein the plurality of pins comprise a power pin, the power pin is electrically connected with the plurality of light emitting and receiving components, and a slow start circuit is connected in series in an electrical connection circuit between the power pin and the plurality of light emitting and receiving components;
the plurality of pins further include:
and the power supply control pin is connected with the slow starting circuit and is used for transmitting a switch control signal to the slow starting circuit.
7. The light module of claim 6, wherein the power pins comprise a plurality of transmit power pins and a plurality of receive power pins;
the number of the plurality of transmitting power supply pins is equal to that of the plurality of light emitting and receiving components, the plurality of transmitting power supply pins correspond to the plurality of light emitting and receiving components one by one, and each transmitting power supply pin is used for supplying power to the light emitting component in the light emitting and receiving component corresponding to the transmitting power supply pin;
the number of the receiving power supply pins is equal to that of the light emitting and receiving assemblies, the receiving power supply pins correspond to the light emitting and receiving assemblies one by one, and each receiving power supply pin is used for supplying power to the light receiving assembly in the light emitting and receiving assembly corresponding to the receiving power supply pin.
8. The optical module according to any one of claims 1 to 7, wherein the plurality of light emitting/receiving elements are stacked and arranged in a direction perpendicular to the substrate.
9. The light module as claimed in any one of claims 1 to 8, wherein the number of the plurality of light emitting and receiving components is two.
10. The optical module according to any one of claims 1 to 9, wherein each of the light emitting and receiving assemblies comprises a light emitting assembly, a light receiving assembly and a wavelength division multiplexer;
the light emitting assembly includes a plurality of light emitting channels and the light receiving assembly includes a plurality of light receiving channels.
11. A network device, comprising:
a single board provided with a slot connector;
the optical module of any one of claims 1 to 10, wherein a golden finger connector of the optical module is fittingly inserted into the slot connector.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010249451.4A CN113467009B (en) | 2020-03-31 | 2020-03-31 | Optical module and network equipment |
| PCT/CN2021/082212 WO2021197113A1 (en) | 2020-03-31 | 2021-03-22 | Optical module and network device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010249451.4A CN113467009B (en) | 2020-03-31 | 2020-03-31 | Optical module and network equipment |
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| Publication Number | Publication Date |
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| CN113467009A CN113467009A (en) | 2021-10-01 |
| CN113467009B true CN113467009B (en) | 2022-08-26 |
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| CN202010249451.4A Active CN113467009B (en) | 2020-03-31 | 2020-03-31 | Optical module and network equipment |
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| CN (1) | CN113467009B (en) |
| WO (1) | WO2021197113A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN113467009A (en) | 2021-10-01 |
| WO2021197113A1 (en) | 2021-10-07 |
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