Optical module, cable connecting seat and optical communication system

Abstract

The invention provides an optical module, a cable connecting seat and an optical communication system, and belongs to the technical field of optical communication. The optical module comprises a packaging shell and a photoelectric conversion device. The first end of the packaging shell is provided with an optical fiber wiring hole, the second end of the packaging shell is provided with an electric port, and the photoelectric conversion device is provided with an optical connector and an electric signal connector; the photoelectric conversion device is located in the packaging shell, the position of the optical connector is opposite to the position of the optical fiber wiring hole, and the electric signal connector is located in the electric port; and the optical fiber wiring hole is used for inserting an optical fiber without an optical fiber connector, so that the optical fiber is connected with the optical joint. According to the invention, the optical fiber does not pass through the optical fiber connector, but is directly inserted into the optical fiber wiring hole of the optical module, so that in optical network deployment, only rough length surveying is needed, even length surveying is not needed, only simple fiber coiling is needed, even fiber coiling is not needed, and the difficulty of optical network deployment can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of optical communication technologies, and particularly to an optical module, a cable connector, and an optical communication system. Background Art

[0002] In current optical modules, the structure used to connect to an optical fiber is usually an optical interface to enable an optical fiber connector of the optical fiber to be inserted into the optical interface of the optical module, thereby realizing the connection between the optical fiber and the optical module.

[0003] Since the optical fiber is connected to the optical module through an optical fiber connector, the optical fiber is usually a prefabricated optical fiber. A prefabricated optical fiber is an optical fiber customized in a manufacturing factory according to different market demands and with optical fiber connectors already connected at both ends.

[0004] However, for such prefabricated optical fibers, since they are customized and have a fixed length, in the optical network deployment project, it is necessary to conduct on-site engineering surveys in advance to measure the required length of the optical fiber. Generally, the length of the prefabricated optical fiber manufactured to ensure an appropriate redundancy is greater than the length measured during the on-site engineering survey. Therefore, the prefabricated optical fiber will include excess optical fiber, and this excess optical fiber still needs to be coiled. Both on-site engineering surveys and coiling of optical fibers increase the difficulty of optical network deployment. Summary of the Invention

[0005] The present disclosure provides an optical module, a cable connector, and an optical communication system. The optical fiber is directly inserted into the optical fiber connection hole of the optical module without passing through an optical fiber connector. Then, in optical network deployment, on-site cutting of the optical fiber according to requirements can be realized, without the need to survey the length or coil the optical fiber, thus reducing the difficulty of optical network deployment.

[0006] In a first aspect, the present disclosure provides an optical module, which includes a packaging housing and an optoelectronic conversion device;

[0007] The first end of the packaging housing has an optical fiber connection hole, and the second end has an electrical port. The optoelectronic conversion device has an optical connector and an electrical signal connector;

[0008] The optoelectronic conversion device is located in the packaging housing, and the position of the optical connector is opposite to the position of the optical fiber connection hole, and the electrical signal connector is located in the electrical port;

[0009] The optical fiber connection hole is used for inserting an optical fiber without an optical fiber connector, so that the optical fiber is connected to the optical connector.

[0010] In the solution disclosed in the present disclosure, the encapsulation housing of the optical module has a fiber optic connection hole at the first end. The fiber optic connection hole replaces the fiber optic connector port in the prior art. Then, when the optical module is connected to the optical fiber, the optical fiber without a fiber optic connector can be directly inserted into the fiber optic connection hole. In this way, in the deployment of the optical network, it is only necessary to cut the optical fiber as needed and directly insert the cut optical fiber into the fiber optic connection hole of the optical module. Then, in the deployment of the optical network, it is not necessary to survey the length between two communication devices to estimate the length of the prefabricated optical fiber to be used. Since the optical fiber is cut as needed, there is no excess optical fiber, so there is no need to perform the operation of coiling the optical fiber. It can be seen that this optical fiber is directly inserted into the fiber optic connection hole of the optical module instead of passing through a fiber optic connector, which can reduce the difficulty of optical network deployment.

[0011] Moreover, since the optical fiber is not a prefabricated optical fiber, the processing cost of the optical fiber can also be reduced. Since the optical fiber is not a prefabricated optical fiber and there is no fiber optic connector at the end of the optical fiber, there is no need to arrange an optical port that matches the fiber optic connector at the first end of the encapsulation housing. It is only necessary to open a through hole that matches the diameter of the optical fiber, so the encapsulation process of the optical module can be simplified and the encapsulation cost of the optical module can be reduced.

[0012] In addition, directly opening a fiber optic connection hole on the encapsulation housing of the optical module instead of assembling a component with a fiber optic connection hole in the open end at the first end of the encapsulation housing is beneficial to reducing the volume of the optical module at the first end. Once the volume of the first end of the optical module is relatively small, when the second end of the optical module is inserted into the communication device, the space occupied by a single optical module is relatively small, so that a larger number of optical modules can be inserted on the panel of the communication device, which is beneficial to increasing the arrangement density of the optical modules on the panel of the communication device.

[0013] In a possible implementation manner, the fiber optic connection hole is used for inserting a plastic optical fiber without a fiber optic connector so that the plastic optical fiber is connected to the optical connector.

[0014] In the solution disclosed in the present disclosure, the optical module is specifically connected to a plastic optical fiber. In the field of optical network deployment, compared with a glass optical fiber, the plastic optical fiber is easier to cut, the required cutting tool is simple, the plastic optical fiber is not prone to burrs and cracks after cutting, and the plastic optical fiber can also be polished with a simple tool on site to further improve the flatness of the end face of the plastic optical fiber. Therefore, the fiber optic connection hole of the optical module is used for inserting a plastic optical fiber without a fiber optic connector so that the plastic optical fiber is docked with the optical connector.

[0015] In one possible implementation manner, the first end of the encapsulation housing has a limit locking structure for locking the optical fiber at the optical coupling position of the optical fiber connection hole when the optical fiber inserted into the optical fiber connection hole is inserted to the end, and unlocking the optical fiber locked in the optical fiber connection hole so that the optical fiber can be pulled out from the optical fiber connection hole.

[0016] In the solution shown in the present disclosure, the limit locking structure can effectively lock the optical fiber in the optical fiber connection hole, preventing the optical fiber inserted in the optical fiber connection hole from falling off from the optical fiber connection hole.

[0017] In one possible implementation manner, the limit locking structure is configured to press against the optical fiber inserted into the optical fiber connection hole when in the locked state, and release the pressing against the optical fiber inserted into the optical fiber connection hole when in the unlocked state.

[0018] In one possible implementation manner, the optical connector has a pigtail, the pigtail and the optical fiber connection hole are in relative positions, and the optical fiber connection hole is for the optical fiber to be inserted so that the optical fiber is connected to the pigtail of the optical connector.

[0019] In the solution shown in the present disclosure, since the optical coupling between the optical connector and the pigtail is carried out in the encapsulation of the optical module, the optical coupling accuracy is relatively high, and the diameters of the pigtail and the optical fiber are comparable. Then, at the optical network deployment site, the loss of optical coupling completed by direct plugging is not large. Therefore, the optical connector can reduce the optical coupling loss by performing optical coupling with the optical fiber through the pigtail at the optical network deployment site.

[0020] In one possible implementation manner, the optical connector includes a receiving optical connector and a transmitting optical connector, the receiving optical connector has a pigtail, or both the receiving optical connector and the transmitting optical connector have pigtails.

[0021] In the solution shown in the present disclosure, the diameter of the high-speed receiving optical connector differs greatly from that of the optical fiber. Directly using the limit locking structure for optical coupling results in relatively large losses, while the receiving optical connector can reduce the optical coupling loss by performing optical coupling with the optical fiber through the pigtail.

[0022] In one possible implementation manner, the cross-sectional shape of the optical fiber connection hole matches the cross-sectional shape of a single optical fiber for a single optical fiber to be inserted, or the cross-sectional shape of the optical fiber connection hole matches the cross-sectional shape of a ribbon optical cable for the ribbon optical cable to be inserted, where the ribbon optical cable includes multiple optical fibers.

[0023] In one possible implementation manner, the optical module further includes a first power supply connector and a second power supply connector;

[0024] The first power supply connector is located at the first end of the encapsulation housing, and the second power supply connector is located at the second end of the encapsulation housing, and the first power supply connector and the second power supply connector are electrically connected;

[0025] The first power supply connector is used to connect to the power supply copper wire of the composite cable, and the second power supply connector is used to connect to the power supply line of the communication device.

[0026] In the solution shown in the present disclosure, the optical module further includes a first power supply connector and a second power supply connector having an electrical connection relationship, so that the optical module not only has an optoelectronic conversion function, but also has a power transmission function.

[0027] In a possible implementation manner, the first end of the encapsulation housing has a power supply connection hole, and the power supply connection hole is opposite to the position of the first power supply connector for inserting the power supply copper wire of the composite cable to connect the first power supply connector to the power supply copper wire.

[0028] In the solution shown in the present disclosure, since the first end of the encapsulation housing has a power supply connection hole, the power supply copper wire of the composite cable can be directly inserted into the power supply connection hole to be electrically connected to the first power supply connector without a power connector, which can simplify the connection between the composite cable and the composite optical module.

[0029] In a second aspect, a cable connection seat is provided. The cable connection seat includes a first connection portion and a second connection portion, and the first connection portion and the second connection portion are distributed opposite to each other;

[0030] On the outer end faces of the first connection portion and the second connection portion that are opposite to each other, there are optical fiber connection holes, and the optical fiber connection holes of the first connection portion are opposite to the optical fiber connection holes of the second connection portion one by one in position;

[0031] The cable connection seat is configured to insert a first optical fiber through the optical fiber connection hole of the first connection portion and insert a second optical fiber through the optical fiber connection hole of the second connection portion to connect the first optical fiber and the second optical fiber.

[0032] In a possible implementation manner, on the outer end faces of the first connection portion and the second connection portion that are opposite to each other, there are power supply connection holes, and the power supply connection holes of the first connection portion are opposite to the power supply connection holes of the second connection portion one by one in position;

[0033] The cable connection seat is configured to insert a first optical and electrical composite cable through the optical fiber connection hole and the power supply connection hole of the first connection portion and insert a second optical and electrical composite cable through the optical fiber connection hole and the power supply connection hole of the second connection portion to connect the first optical and electrical composite cable and the second optical and electrical composite cable.

[0034] In a third aspect, an optical communication system is provided. The optical communication system includes a communication device, an optical fiber, and the optical module described in the first aspect. The optical fiber is inserted into the optical fiber connection hole at the first end of the optical module, and the second end of the optical module is inserted into the interface of the communication device.

[0035] In a fourth aspect, an optical communication system is provided. The optical communication system includes a communication device, an optical fiber, an optical module, and the cable connection base described in the second aspect;

[0036] A tail fiber extends from the first end of the optical module. The tail fiber is connected to the optical fiber through the cable connection base, and the second end of the optical module is inserted into the interface of the communication device. Description of the Drawings

[0037] Figure 1 is a schematic diagram of an optical module provided by an exemplary embodiment of the present disclosure;

[0038] Figure 2 is a schematic diagram of an optical module provided by an exemplary embodiment of the present disclosure;

[0039] Figure 3 is a schematic diagram of an optical module provided by an exemplary embodiment of the present disclosure;

[0040] Figure 4 is a schematic diagram of an optical module provided by an exemplary embodiment of the present disclosure;

[0041] Figure 5 is a schematic diagram of the internal architecture of an optical module provided by an exemplary embodiment of the present disclosure;

[0042] Figure 6 is a schematic diagram of the internal architecture of an optical module provided by an exemplary embodiment of the present disclosure;

[0043] Figure 7 is a schematic diagram of the internal architecture of an optical module provided by an exemplary embodiment of the present disclosure;

[0044] Figure 8 is a schematic diagram of the internal architecture of an optical module provided by an exemplary embodiment of the present disclosure;

[0045] Figure 9 is a schematic diagram of the internal architecture of an optical module provided by an exemplary embodiment of the present disclosure;

[0046] Figure 10 is a schematic diagram of a cable connection base provided by an exemplary embodiment of the present disclosure;

[0047] Figure 11 is a schematic diagram of the application scenario of a cable connection base provided by an exemplary embodiment of the present disclosure.

[0048] Legend Explanation

[0049] 1. Encapsulation housing; 11. Optical fiber connection hole; 12. Electrical port; 13. Limit locking structure.

[0050] 2. Optoelectronic conversion device; 21. Optical connector; 22. Electrical signal connector; 211. Pigtail; 212. Receiving optical connector; 213. Transmitting optical connector. Specific Embodiment

[0051] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0052] This embodiment provides an optical module. According to the number of optical ports of the optical module, the optical module is specifically a dual-fiber bidirectional optical module or a single-fiber bidirectional optical module. For ease of introduction, the accompanying drawings in this embodiment are exemplified by a dual-fiber bidirectional optical module. According to the function, the optical module is specifically an optical module with optoelectronic conversion, or the optical module is specifically a composite optical module with power transmission function and optoelectronic conversion function. Among them, optoelectronic conversion includes optical-to-electrical conversion and / or electrical-to-optical conversion. For ease of introduction, the accompanying drawings in this embodiment are exemplified by an optical module with optoelectronic conversion function. The structural features of the optical module will be introduced below.

[0053] As Figure 1 shown is a schematic structural diagram of the optical module. As Figure 2 shown is a schematic diagram showing Figure 1 the internal structure of the optical module shown.

[0054] In one example, one end of the optical module is used to connect to a cable (such as a hybrid fiber-coaxial cable or an optical fiber cable), and the other end is used to connect to a communication device (such as a switch). For ease of introduction, the end of the optical module used to connect to the cable is denoted as the first end of the optical module, or the optical port side of the optical module, and the end of the optical module used to connect to the communication device is denoted as the second end of the optical module, or the electrical port side of the optical module.

[0055] Among them, in this embodiment, the first end of the optical module is also the first end of the encapsulation housing 1, and the second end of the optical module is also the second end of the encapsulation housing 1.

[0056] Among them, the hybrid fiber-coaxial cable, abbreviated as the composite cable, includes an optical fiber and a power supply copper wire, and the power supply copper wire can also be replaced by a cable made of other metal materials, such as a power supply aluminum wire. Among them, the optical fiber cable only includes optical fibers, such as including one optical fiber or multiple optical fibers.

[0057] Refer to Figure 1As shown in the figure, the optical module includes a packaging housing 1. The first end of the packaging housing 1 has an optical fiber connection hole 11, and the second end has an electrical port 12. Among them, the optical fiber connection hole 11 is used for directly inserting an optical fiber without an optical fiber connector, and the number of the optical fiber connection holes 11 is one or more.

[0058] For example, if the optical module is a single-channel single-fiber bidirectional optical module, then the number of the optical fiber connection holes 11 is one. For another example, if the optical module is a multi-channel single-fiber bidirectional optical module, or a single-channel double-fiber bidirectional optical module, or a multi-channel double-fiber bidirectional optical module, then the number of the optical fiber connection holes 11 is multiple. Among them, Figure 1 and Figure 2 both take the number of the optical fiber connection holes 11 being multiple as an example.

[0059] Among them, the electrical port 12 at the second end of the packaging housing 1 is usually formed by the second end of the packaging housing 1 being open, as shown in Figure 1 the figure.

[0060] As shown in Figure 2 the figure, the optical module includes an optoelectronic conversion device 2. The optoelectronic conversion device 2 is used to perform optoelectronic conversion or electro-optic conversion, or both optoelectronic conversion and electro-optic conversion. Therefore, the optoelectronic conversion device 2 includes an optical device and an electrical device. Among them, the optical device, for example, includes an optical emission device (such as a laser chip) and an optical reception device (such as a detector chip), or the optical device is an optical transceiver device. The electrical device is an electronic component on the functional circuit of the optical module, such as including an amplifier, a clock data recovery, and a driver chip, etc. These electrical devices are usually arranged on a circuit board and are electrically connected through the circuit board.

[0061] In one example, the optoelectronic conversion device 2 includes two connectors. One connector is used to receive and transmit optical signals and is called an optical connector, as shown in Figure 2 the figure and is denoted as the optical connector 21. The other connector is used to receive and transmit electrical signals and is called an electrical connector. Among them, the electrical connector is denoted as the electrical signal connector 22 in order to distinguish it from the power supply connector described later. As shown in Figure 2 the figure, the electrical signal connector 22 is specifically the gold finger at the end of the circuit board.

[0062] As shown in Figure 1 and referring to Figure 2 the figure, the optoelectronic conversion device 2 is located in the packaging housing 1, and the position of the optical connector 21 of the optoelectronic conversion device 2 is opposite to the position of the optical fiber connection hole 11, so that the optical signal transmitted by the optical fiber inserted into the optical fiber connection hole 11 can be coupled into the optical connector 21, or the optical signal output by the optical connector 21 can be coupled into the optical fiber inserted into the optical fiber connection hole 11.

[0063] Continuing to refer to Figure 1As shown, the electrical signal connector 22 of the optoelectronic conversion device 2 extends into the electrical port 12 so that when the second end of the optical module is inserted into the communication device, the electrical signal connector 22 can be electrically connected to the optical cage connector of the communication device.

[0064] As described above, if the optical module also has a power transmission function, then the optical module will also include two power supply connectors. One power supply connector, denoted as the first power supply connector, is located near the first end of the optical module, and the other power supply connector, denoted as the second power supply connector, is located near the second end of the optical module. The first power supply connector and the second power supply connector are electrically connected. Among them, the first power supply connector is used to connect to the power supply copper wire of the composite cable, and the second power supply connector is used to connect to the power supply line of the communication device.

[0065] Since this embodiment mainly introduces the connection method between the optical fiber and the optical module, the features of the two power supply connectors of the optical module will not be introduced in detail.

[0066] As can be seen from the above, because the encapsulation housing 1 of the optical module has an optical fiber connection hole 11 at the first end, and the position of the optical fiber connection hole 11 is opposite to the position of the optical connector 21. For example, the optical fiber connection hole 11 is located on the optical path of the optical connector 21. Therefore, the optical fiber without an optical fiber connector can be directly inserted into the optical fiber connection hole 11 to perform optical coupling with the optical connector 21. In this way, in the optical network deployment, only need to cut the optical fiber as needed and directly insert the cut optical fiber into the optical fiber connection hole 11 of the optical module. Then, in the optical network deployment, there is no need to survey the length between two communication devices to estimate the length of the prefabricated optical fiber used. Because the optical fiber is cut as needed, there is no excess optical fiber and no need for fiber coiling operation. It can be seen that this optical fiber is directly inserted into the optical fiber connection hole 11 of the optical module without passing through an optical fiber connector, which can reduce the difficulty of optical network deployment.

[0067] Moreover, because the optical fiber is not a prefabricated optical fiber, the processing cost of the optical fiber can also be reduced. Since the optical fiber is not a prefabricated optical fiber and there is no optical fiber connector at the end of the optical fiber, there is no need to arrange an optical port matching the optical fiber connector at the first end of the encapsulation housing 1, and only a through hole matching the diameter of the optical fiber needs to be opened. Therefore, the encapsulation process of the optical module can be simplified and the encapsulation cost of the optical module can be reduced.

[0068] In one example, the optical module is specifically connected to a plastic optical fiber. In the optical network deployment site, the plastic optical fiber is easier to cut, the required cutting tools are simple, and there are no burrs and cracks on the plastic optical fiber after cutting. The plastic optical fiber can also be polished with simple tools on site to further improve the flatness of the end face of the plastic optical fiber. Therefore, the optical fiber connection hole 11 of the optical module is used for the plastic optical fiber without an optical fiber connector to be inserted so that the plastic optical fiber is docked with the optical connector 21.

[0069] In one example, the size of the optical fiber connection hole 11 is slightly smaller than the size of the optical fiber, so that the optical fiber is inserted into the optical fiber connection hole 11 with interference fit and is not easy to fall off from the optical fiber connection hole 11.

[0070] In another example, in order to further prevent the optical fiber inserted into the optical fiber wiring hole 11 from falling off from the optical fiber wiring hole 11, accordingly, Figure 3 As shown, Figure 1 The optical module shown is a schematic diagram of a packaging shell 1 having a limiting locking structure 13 at the first end.

[0071] refer to Figure 3 As shown, the first end of the packaging shell 1 has a limit locking structure 13. When the optical fiber is inserted into the optical fiber wiring hole 11 and the optical fiber is inserted to the bottom, at this time, the optical fiber has reached the optical coupling position, and then the limit locking structure 13 is controlled to switch to a locking state, so that the limit locking structure 13 locks the optical fiber inserted into the optical fiber wiring hole 11 at the optical coupling position of the optical fiber wiring hole 11. When the limit locking structure 13 is switched to an unlocked state, the limit locking structure 13 can pull the optical fiber inserted into the optical fiber wiring hole 11 out of the optical fiber wiring hole 11.

[0072] For example, when the limit locking structure 13 is in a locked state, the limit locking structure 13 can press down on the optical fiber inserted into the optical fiber wiring hole 11, pressing the optical fiber tightly in the optical fiber wiring hole 11, making it difficult for the optical fiber to fall off from the optical fiber wiring hole 11, and when the limit locking structure 13 is in an unlocked state, the locking structure 13 can release the pressure on the optical fiber inserted into the optical fiber wiring hole 11, making it easier to pull the optical fiber out of the optical fiber wiring hole 13.

[0073] refer to Figure 3 As shown, the limit locking structure 13 is of a push-button type. When the limit locking structure 13 is pushed open, the limit locking structure 13 is in an unlocked state, and the limit locking structure 13 no longer presses on the optical fiber inserted into the optical fiber wiring hole 11. When the limit locking structure 13 is not pushed open, the limit locking structure 13 is in a locked state, and the limit locking structure 13 tightly presses on the optical fiber inserted into the optical fiber wiring hole 11.

[0074] In another example, the limit locking structure 13 is a screw type, and by rotating the clamping screw of the limit locking structure 13, the optical fiber inserted into the optical fiber wiring hole 11 can be locked in the optical fiber wiring hole, or the optical fiber inserted into the optical fiber wiring hole 11 can be unlocked from the optical fiber wiring hole.

[0075] Among them, this embodiment does not specifically limit the specific structure of the limit locking structure 13. It can limit and lock the optical fiber inserted into the optical fiber wiring hole 11 in the optical fiber wiring hole 11, and can unlock the optical fiber inserted into the optical fiber wiring hole 11 from the optical fiber wiring hole 11.

[0076] In one example, regarding the features of the optical fiber connection hole 11, such as Figure 1 shown, the optical fiber connection hole 11 is formed on the outer end surface of the first end of the encapsulation housing 1 and extends to a through hole inside the encapsulation housing 1.

[0077] In one example, the cross-sectional shape of the optical fiber connection hole 11 matches the cross-sectional shape of a single optical fiber. For example, as Figure 1 and Figure 2 shown, the cross-sectional shape of a single optical fiber connection hole 11 is circular.

[0078] In another example, as Figure 4 shown is a schematic structural diagram of an optical module. The difference from the Figure 3 shown optical module lies in that the cross-sectional shape of the optical fiber connection hole 11 is different. Referring to Figure 4 shown, the cross-sectional shape of the optical fiber connection hole 11 matches the cross-sectional shape of a ribbon optical cable. Such an optical fiber connection hole 11 is used for inserting the ribbon optical cable, where the ribbon optical cable includes multiple optical fibers.

[0079] In one example, as Figure 3 shown in the optical module, the number of optical fiber connection holes 11 is multiple. These multiple optical fiber connection holes 11 are independent of each other, and each optical fiber connection hole 11 is used for inserting an optical fiber. Then, the number of limiting and locking structures 13 for locking the optical fiber is also multiple, and the limiting and locking structures 13 correspond to the optical fiber connection holes 11 one by one.

[0080] As Figure 4 shown in the optical module, the cross-sectional shape of the optical fiber connection hole 11 is strip-shaped for inserting a single ribbon optical cable. Then, in order to lock a single ribbon optical cable, the number of limiting and locking structures 13 is one, and the width of this one limiting and locking structure 13 is equivalent to the width of the ribbon optical cable. Or, the number of limiting and locking structures 13 is multiple, and these multiple limiting and locking structures 13 jointly lock the ribbon optical cable.

[0081] Among them, the cross-sectional shape of the optical fiber connection hole 11 in this embodiment is not specifically limited.

[0082] In one example, the optical fiber inserted into the optical fiber connection hole 11 is directly optically coupled with the optical connector 21. For example, as Figure 5 shown is the Figures 1 to 4 inside the optical module, a schematic diagram of the internal frame. Referring to Figure 5 shown, the optical fiber inserted into the optical fiber connection hole 11 is directly optically coupled with the optical connector 21. As Figure 5As shown, the optical module is a duplex bi-directional optical module with two optical connectors. One is the receiving optical connector 212, and the other is the transmitting optical connector 213. Then, the optical fiber inserted into one optical fiber connection hole 11 is directly coupled to the receiving optical connector 212, and the optical fiber inserted into the other optical fiber connection hole 11 is directly coupled to the transmitting optical connector 213.

[0083] In one example, the optical fiber inserted into the optical fiber connection hole 11 can also be optically coupled to the optical connector 21 through a pigtail. For example, as Figure 6 shown as Figure 5 the schematic diagram of the receiving optical connector 212 in Figure 7 shown as Figure 5 the schematic diagram of both the transmitting optical connector 213 and the receiving optical connector 212 in

[0084] Refer to Figure 6 As shown, the receiving optical connector 212 has a pigtail 211, and the position of the pigtail 211 is opposite to the position of the optical fiber connection hole 11. For example, one optical fiber connection hole 11 is on the optical path of the pigtail 211. In this way, the optical fiber inserted into the optical fiber connection hole 11 can be docked with the pigtail 211 to occur optical coupling, and then an optical signal can be transmitted between the optical fiber and the receiving optical connector 212.

[0085] Refer to Figure 7 As shown, both the receiving optical connector 212 and the transmitting optical connector 213 have pigtails 211, and the pigtails 211 are in one-to-one correspondence with the optical fiber connection holes 11. For example, one optical fiber connection hole 11 is on the optical path of one pigtail 211.

[0086] The receiving optical connector 212 is coupled to the optical fiber through the pigtail 211, which can reduce the coupling loss. This is because the high-speed detector of the optical receiving component usually has a relatively small aperture, and when directly optically coupled to the optical fiber, the tolerance is small and the loss is large. However, the optical coupling between the receiving optical connector 212 and the pigtail 211 is carried out in the package of the optical module, and relatively accurate optical coupling has been completed. The pigtail 211 and the optical fiber inserted into the optical fiber connection hole 11 have a comparable aperture, and the direct docking coupling has a large tolerance and a small optical coupling loss. Therefore, the receiving optical connector 212 can reduce the coupling loss through the pigtail 211.

[0087] Similarly, the transmitting optical connector 213 is coupled to the optical fiber through the pigtail 211, which can also reduce the coupling loss.

[0088] In one example, refer to Figures 5 to 7As shown in the figure, the optical devices of the optoelectronic conversion device 2 include a transmitter optical subassembly (TOSA) and a receiver optical subassembly (ROSA). Among them, the transmitter optical subassembly includes a laser and an optical mirror, etc., and the receiver optical subassembly includes a photodetector (PD) and a transimpedance amplifier (TIA), etc.

[0089] In one example, if the optical module is a single-channel optical module, then as Figures 5 to 7 shown, the number of both the transmitter optical subassembly and the receiver optical subassembly is one. And if the optical module is a multi-channel optical module, then the number of both the transmitter optical subassembly and the receiver optical subassembly is multiple. For example, as Figure 8 shown, it is a schematic diagram of the internal architecture of a dual-channel single-fiber bidirectional optical module.

[0090] Refer to Figure 8 shown, the number of the transmitter optical subassemblies is two, one is denoted as the first transmitter optical subassembly, and the other is denoted as the second transmitter optical subassembly; the number of the receiver optical subassemblies is two, one is denoted as the first receiver optical subassembly, and the other is denoted as the second receiver optical subassembly. The first transmitter optical subassembly and the first receiver optical subassembly jointly correspond to a fiber optic connection hole 11 through an optical mirror, and the second transmitter optical subassembly and the second receiver optical subassembly jointly correspond to a fiber optic connection hole 11 through another optical mirror.

[0091] This multi-channel optical module can increase the communication capacity of the optical module while keeping the number of fiber optic connection holes 11 unchanged.

[0092] Continue to refer to Figures 5 to 8 shown, the electrical devices of the optoelectronic conversion device 2 include a physical layer (PHY) chip and a drive (DRV) chip. Among them, the physical layer chip integrates a limiting amplifier (LA), a clock and data recovery (CDR), and a microcontroller unit (MCU), etc.

[0093] In another example, Figures 1 to 4 for the optical module shown, the internal structure does not adopt the Figures 5 to 8 structure shown, but adopts a minimalist chip architecture as shown in Figure 9 shown. As shown in Figure 9 shown is Figures 1 to 4 another schematic diagram of the internal architecture of the optical module shown. Refer to Figure 9As shown, the optoelectronic conversion device 2 mainly includes a laser chip and a physical layer chip. Among them, the physical layer chip is entirely fabricated using complementary metal oxide semiconductor (CMOS) technology. The physical layer chip integrates functions such as a driver (DRV), a photodetector (PD), a continuous time linear equalizer (CTLE), a limiting amplifier (LA), and a transimpedance amplifier (TIA).

[0094] As described above, the optical module may further include a first power supply connector and a second power supply connector having an electrical connection relationship. The first power supply connector located at the first end of the optical module and the power supply copper wire of the composite cable can also be directly connected by a plugging method, and there is no power connector at the end of the power supply copper wire.

[0095] Correspondingly, the first end of the packaging housing 1 also has a power supply wiring hole. Then, the power supply copper wire of the composite cable does not require a power connector but is directly inserted into the power supply wiring hole and electrically connected to the first power supply connector, which can simplify the connection between the composite cable and the composite optical module.

[0096] In one example, in order to lock the copper wire of the composite cable in the power supply wiring hole, correspondingly, the first end of the packaging housing 1 also has a copper wire locking structure. When the copper wire is inserted into the power supply wiring hole and inserted to the bottom, at this time, the copper wire locking structure switches to the locked state, and the copper wire locking structure can lock the copper wire in the power supply wiring hole and electrically connect it to the first power supply connector. When the copper wire locking structure switches to the unlocked state, the copper wire locking structure unlocks the copper wire locked in the power supply wiring hole, enabling the copper wire to be pulled out from the power supply wiring hole.

[0097] For example, in an application scenario, after the composite cable is pulled near the communication device, the composite cable is peeled off to separate the coated optical fiber and the power supply copper wire. Then, after processing the optical fiber and the power supply copper wire, the optical fiber is inserted into the optical fiber wiring hole and inserted to the bottom, so that the end of the optical fiber moves to the optical coupling position and is optically coupled with the optical connector, and the power supply copper wire is inserted into the power supply wiring hole and electrically connected to the first power supply connector.

[0098] In this embodiment, the encapsulation housing of the optical module has a fiber optic wiring hole at the first end. The fiber optic wiring hole replaces the fiber optic connector port in the prior art. Then, when the optical module is connected to the optical fiber, the optical fiber without a fiber optic connector can be directly inserted into the fiber optic wiring hole. In this way, in the optical network deployment, it is only necessary to cut the optical fiber as needed and directly insert the cut optical fiber into the fiber optic wiring hole of the optical module. Then, in the optical network deployment, it is not necessary to survey the length between two communication devices (even if the length is surveyed, it is only a rough survey and the survey method is relatively simple) to estimate the length of the prefabricated optical fiber to be used. Since the optical fiber is cut as needed, there is no excess optical fiber, so there is no need to perform the fiber coiling operation (even if the fiber coiling is performed, the excess optical fiber is relatively short and the fiber coiling operation is relatively simple). It can be seen that this kind of optical fiber is directly inserted into the fiber optic wiring hole of the optical module without passing through a fiber optic connector, which can reduce the difficulty of optical network deployment.

[0099] Moreover, since the optical fiber is not a prefabricated optical fiber, the processing cost of the optical fiber can also be reduced. Since the optical fiber is not a prefabricated optical fiber and there is no fiber optic connector at the end of the optical fiber, there is no need to arrange an optical port matching the fiber optic connector at the first end of the encapsulation housing. It is only necessary to open a through hole matching the diameter of the optical fiber, so the encapsulation process of the optical module can be simplified and the encapsulation cost of the optical module can be reduced.

[0100] In addition, directly opening a fiber optic wiring hole on the encapsulation housing of the optical module instead of assembling a component with a fiber optic wiring hole in the opening at the first end of the encapsulation housing is beneficial to reducing the volume of the optical module at the first end. Once the volume of the first end of the optical module is relatively small, when the second end of the optical module is inserted into the communication device, the space occupied by a single optical module is relatively small, so that a larger number of optical modules can be inserted on the panel of the communication device, which is beneficial to increasing the arrangement density of the optical modules on the panel of the communication device.

[0101] This embodiment also provides a cable connection base, as Figure 10 shown in the structural schematic diagram of the cable connection base. Referring to Figure 10 shown, the cable connection base includes a first connection portion A and a second connection portion B. Among them, the first connection portion A and the second connection portion B are distributed relatively. On the outer end faces where the first connection portion A and the second connection portion B are opposite, there are fiber optic wiring holes 11, and the fiber optic wiring hole 11 of the first connection portion A and the fiber optic wiring hole 11 of the second connection portion B are opposite to each other in position one by one.

[0102] Among them, the cable connection base is used to insert a first optical fiber through the fiber optic wiring hole 11 of the first connection portion A and insert a second optical fiber through the fiber optic wiring hole 11 of the second connection portion B to connect the first optical fiber and the second optical fiber.

[0103] In one example, in order to lock the optical fiber in the optical fiber connection hole 11, both the first connection part A and the second connection part B include a limiting and locking structure. The features of the limiting and locking structure are as described above and will not be elaborated here.

[0104] Among them, the features of the optical fiber connection hole 11 are as described above. For example, the cross-sectional shape of the optical fiber connection hole 11 matches the cross-sectional shape of a single optical fiber, or the cross-sectional shape of the optical fiber connection hole 11 matches the cross-sectional shape of a ribbon optical cable. Specifically, see the above description and will not be elaborated here.

[0105] In one example, this cable connection seat can connect two optical fibers. For example, if one optical fiber fails and needs to be cut for repair, then after repair, the two optical fibers formed by cutting can be connected through this cable connection seat. Another example is as Figure 11 shown, which is a schematic diagram of an application scenario of the cable connection seat. Refer to Figure 11 shown. The first end of the pigtail fiber is inserted into the optical module of the communication device. Then, the optical fiber and the pigtail fiber of the optical module can be connected through this cable connection seat.

[0106] Refer to Figure 11 shown. This cable connection seat is used in combination with an optical module with a pigtail fiber. In the deployment of an optical network, the optical fiber is cut as needed. Then, it is not necessary to survey the length between two communication devices, nor is it necessary to coil the optical fiber. Therefore, the difficulty of optical network deployment can also be reduced.

[0107] In one example, this cable connection seat also has the function of connecting two copper wires. Correspondingly, on the outer end faces of the first connection part and the second connection part that are opposite to each other, there are power supply connection holes, and the power supply connection holes of the first connection part and the power supply connection holes of the second connection part are in one-to-one correspondence in position.

[0108] Among them, the cable connection seat is used to insert the first optical and electrical composite cable through the optical fiber connection hole and the power supply connection hole of the first connection part, and insert the second optical and electrical composite cable through the optical fiber connection hole and the power supply connection hole of the second connection part to connect the first optical and electrical composite cable and the second optical and electrical composite cable.

[0109] In this way, the copper wire of the first optical and electrical composite cable is inserted and locked in the power supply connection hole of the first connection part, the optical fiber of the first optical and electrical composite cable is inserted and locked in the optical fiber connection hole of the first connection part, the copper wire of the second optical and electrical composite cable is inserted and locked in the power supply connection hole of the second connection part, and the optical fiber of the second optical and electrical composite cable is inserted and locked in the optical fiber connection hole of the second connection part, thereby completing the electrical connection and optical coupling of the first optical and electrical composite cable and the second optical and electrical composite cable.

[0110] In one example, the cable connector further includes a power supply wiring portion. The position of the power supply wiring portion is opposite to the position of the power supply wiring hole of the first connection portion and is also opposite to the position of the power supply wiring hole of the second connection portion. In this way, the copper wire of the first optical and electrical composite cable is inserted and locked in the power supply wiring hole of the first connection portion and is electrically connected to the power supply wiring portion. The copper wire of the second optical and electrical composite cable is inserted and locked in the power supply wiring hole of the second connection portion and is also connected to the power supply wiring portion. Thus, the copper wires of the first optical and electrical composite cable and the second optical and electrical composite cable are electrically connected.

[0111] Based on the above, the cable connector can be used to connect two optical fibers, two copper wires, or two optical and electrical composite cables.

[0112] This embodiment also provides an optical communication system. The optical communication system includes a communication device, an optical fiber, and the optical module described above. Among them, the optical fiber is inserted into the optical fiber wiring hole at the first end of the optical module, and the second end of the optical module is inserted into the interface of the communication device.

[0113] This embodiment also provides an optical communication system. The optical communication system includes a communication device, an optical fiber, an optical module, and the cable connector described above. Among them, a pigtail extends from the first end of the optical module. The pigtail of the optical module is connected to the optical fiber through the cable connector, and the second end of the optical module is inserted into the interface of the communication device.

Claims

1. An optical module, characterized in that, The optical module includes a packaging housing (1) and an optoelectronic conversion device (2); A first end of the packaging housing (1) has an optical fiber connection hole (11), and a second end has an electrical port (12). The optoelectronic conversion device (2) has an optical connector (21) and an electrical signal connector (22); The optoelectronic conversion device (2) is located in the packaging housing (1), and the position of the optical connector (21) is opposite to the position of the optical fiber connection hole (11), and the electrical signal connector (22) is located in the electrical port (12); The optical fiber connection hole (11) is for inserting an optical fiber without an optical fiber connector, so that the optical fiber is connected to the optical connector (21).

2. The optical module according to claim 1, wherein The optical fiber connection hole (11) is for inserting a plastic optical fiber without an optical fiber connector, so that the plastic optical fiber is connected to the optical connector (21).

3. The optical module according to claim 1 or 2, characterized in that, A first end of the packaging housing (1) has a limit locking structure (13). When the optical fiber inserted into the optical fiber connection hole (11) is inserted to the bottom, the limit locking structure (13) is used to lock the optical fiber at the optical coupling position of the optical fiber connection hole (11), and unlock the optical fiber locked in the optical fiber connection hole (11), so that the optical fiber can be pulled out from the optical fiber connection hole (11).

4. The optical module according to claim 3, characterized in that The limit locking structure (13) is used to press against the optical fiber inserted into the optical fiber connection hole (11) when in the locked state, and release the pressing against the optical fiber inserted into the optical fiber connection hole (11) when in the unlocked state.

5. The optical module according to any one of claims 1 to 4, characterized in that The optical connector (21) has a pigtail (211), and the pigtail (211) is opposite to the position of the optical fiber connection hole (11). The optical fiber connection hole (11) is for inserting an optical fiber, so that the optical fiber is connected to the pigtail (211) of the optical connector (21).

6. The optical module according to claim 5, wherein, The optical connector (21) includes a receiving optical connector (212) and a transmitting optical connector (213). The receiving optical connector (212) has a pigtail (211), or both the receiving optical connector (212) and the transmitting optical connector (213) have pigtails (211).

7. The optical module according to any one of claims 1 to 6, characterized in that, The cross-sectional shape of the optical fiber connection hole (11) matches the cross-sectional shape of a single optical fiber for inserting a single optical fiber, or the cross-sectional shape of the optical fiber connection hole (11) matches the cross-sectional shape of a ribbon optical cable for inserting a ribbon optical cable, where the ribbon optical cable includes a plurality of optical fibers.

8. The optical module according to any one of claims 1 to 7, characterized in that The optical module further includes a first power supply connector and a second power supply connector; The first power supply connector is located at the first end of the packaging housing (1), the second power supply connector is located at the second end of the packaging housing (1), and the first power supply connector and the second power supply connector are electrically connected; The first power supply connector is for connecting to the power supply copper wire of the composite cable, and the second power supply connector is for connecting to the power supply line of the communication device.

9. The optical module according to claim 8, characterized in that, A first end of the packaging housing (1) has a power supply connection hole, and the power supply connection hole is opposite to the position of the first power supply connector for inserting the power supply copper wire of the composite cable, so that the first power supply connector is connected to the power supply copper wire.

10. A cable connection base, characterized in that, The cable connection base includes a first connection part (A) and a second connection part (B), and the first connection part (A) and the second connection part (B) are distributed relatively; On the outer end faces of the first connection part (A) and the second connection part (B) that are opposite to each other, there are optical fiber connection holes (11), and the optical fiber connection holes (11) of the first connection part (A) and the optical fiber connection holes (11) of the second connection part (B) are opposite to each other in position one by one; The cable connection base is used for inserting a first optical fiber through the optical fiber connection hole (11) of the first connection part (A), and inserting a second optical fiber through the optical fiber connection hole (11) of the second connection part (B) to connect the first optical fiber and the second optical fiber.

11. The cable connector according to claim 10, wherein, On the outer end faces of the first connection part (A) and the second connection part (B) that are opposite to each other, there are power supply connection holes, and the power supply connection holes of the first connection part (A) and the power supply connection holes of the second connection part (B) are opposite to each other in position one by one; The cable connection base is used for inserting a first optical and electrical composite cable through the optical fiber connection hole (11) and the power supply connection hole of the first connection part (A), and inserting a second optical and electrical composite cable through the optical fiber connection hole (11) and the power supply connection hole of the second connection part (B) to connect the first optical and electrical composite cable and the second optical and electrical composite cable.

12. An optical communication system, characterized in that, The optical communication system includes a communication device, an optical fiber, and the optical module according to any one of claims 1 to 9. The optical fiber is inserted into the optical fiber connection hole (11) at the first end of the optical module, and the second end of the optical module is inserted into the interface of the communication device.

13. An optical communication system, characterized in that, The optical communication system includes a communication device, an optical fiber, an optical module, and the cable connection base according to claim 10 or 11; A pigtail extends from the first end of the optical module. The pigtail and the optical fiber are connected through the cable connection base, and the second end of the optical module is inserted into the interface of the communication device.

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