CN106992817B - Light receiving device and equipment - Google Patents
Light receiving device and equipment Download PDFInfo
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- CN106992817B CN106992817B CN201710350258.8A CN201710350258A CN106992817B CN 106992817 B CN106992817 B CN 106992817B CN 201710350258 A CN201710350258 A CN 201710350258A CN 106992817 B CN106992817 B CN 106992817B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
The application provides a light receiving device and equipment, and relates to the technical field of circuit design, wherein the light receiving device comprises: the ONU module, the EOC module, the backboard connecting module and the exchange management module are arranged separately, in the device, the ONU module and the EOC module are connected with the exchange management module in a pluggable manner through the backboard connecting module, the ONU module performs photoelectric conversion on the IP data signals and sends the IP data signals after the photoelectric conversion to the exchange management module, and then the EOC module receives the IP data signals sent by the exchange management module after integration and modulates/demodulates the IP data signals, so that wiring among all devices is effectively simplified, and the installation and maintenance of the devices are more convenient.
Description
Technical Field
The present application relates to the field of circuit design, and in particular, to a light receiving device and equipment.
Background
With the development of technology and the improvement of living standard of people, broadcast television, broadband network and the like have come into the life and work of people and provide more and more rich experience for people. In general, broadcast television broadcasts sound and image programs and the like to the outside through radio waves or wires. People can look up the latest headlines at home and abroad through the broadcast television, and can relax and relax through entertainment programs of the broadcast television and the like. In addition to broadcast television, the rise of broadband networks has also led to a more colorful life.
Before a user uses applications such as broadcast television and broadband network, related devices such as ONU (Optical Network Unit) devices, EOC (Ethernet Over Cable) office devices, optical receivers, and the like need to be accessed. At present, the devices are mostly manufactured by different manufacturers and are respectively packaged in different shells, referring to fig. 1, when the devices are connected, connection needs to be performed between the devices, and in order to ensure the safety of electricity consumption, a plurality of connected devices need to be packaged in a large box again. Considering the devices formed in the above-described connection manner, the occupied space is large.
In recent years, an integrating device, see fig. 2, that is, an ONU device, an EOC local side device, and an optical receiver are integrated in the same housing, and in this connection manner, the ONU device, the EOC local side device, and the optical receiver can share one power supply, compared with the previous package form, so that the number of wires is reduced to some extent. However, especially when the device is used for transmitting the IP data signal, the product in the package form still has a plurality of defects in the actual use process, for example, when any device integrated in the shell fails, the failed devices cannot be checked one by one in time, and the shell needs to be opened first, which is time-consuming and labor-consuming.
Disclosure of Invention
In view of the above, an object of the embodiments of the present application is to provide an optical receiving device and equipment, which simplifies the connection between devices by providing a separate ONU module, EOC module, backplane connection module, and switching management module.
In a first aspect, an embodiment of the present application provides a light receiving device, including: the system comprises an ONU module, an EOC module, a backboard connecting module and a switching management module which are arranged separately;
the ONU module and the EOC module are connected with the exchange management module in a pluggable manner through the backboard connecting module;
the ONU module is used for carrying out photoelectric conversion on the IP data signals and sending the IP data signals after photoelectric conversion to the exchange management module;
and the EOC module is used for receiving the IP data signals sent by the integrated exchange management module and modulating/demodulating the IP data signals.
With reference to the first aspect, an embodiment of the present application provides a first possible implementation manner of the first aspect, where the device further includes a separately disposed optical receiving and amplifying module, where the optical receiving and amplifying module is connected to the exchange management module through a backplane connection module;
and the optical receiving amplification module is used for carrying out photoelectric conversion on the broadcast television signals, carrying out radio frequency signal amplification and sending the broadcast television signals after photoelectric conversion to the exchange management module.
With reference to the first possible implementation manner of the first aspect, the embodiment of the present application provides a second possible implementation manner of the first aspect, where the device further includes a mixing/distributing module, where the mixing/distributing module is connected to the EOC module;
and the mixing/distributing module is used for carrying out frequency spectrum mixing on the broadcast television signal and the EOC module and then distributing output.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present application provides a third possible implementation manner of the first aspect, where the device further includes a power module, where the power module is connected to the exchange management module in a pluggable manner;
and the power supply module is used for converting alternating current into direct current and providing electric energy for the exchange management module, the ONU module, the EOC module, the light receiving amplification module and the frequency mixing/distributing module.
With reference to the third possible implementation manner of the first aspect, the embodiment of the present application provides a fourth possible implementation manner of the first aspect, where the EOC module includes a first EOC module and a second EOC module;
the first EOC module and the second EOC module are connected with the exchange management module.
In a second aspect, an embodiment of the present application provides a light receiving device, including: the system comprises an EOC module, a backboard connecting module and an exchange management module which are arranged separately, wherein ONU equipment is integrated in the exchange management module;
the EOC module is connected with the exchange management module in a pluggable manner through the backboard connecting module;
ONU equipment, which is used to make photoelectric conversion on the IP data signal and send the photoelectric converted IP data signal to the exchange management module for processing;
and the EOC module is used for receiving the IP data signals sent by the exchange management module after processing and modulating/demodulating the IP data signals.
With reference to the second aspect, an embodiment of the present application provides a first possible implementation manner of the second aspect, where the optical transceiver further includes a separately disposed optical transceiver module, where the optical transceiver module is connected to the switching management module through a backplane connection module;
and the optical receiving amplification module is used for carrying out photoelectric conversion on the broadcast television signals, carrying out radio frequency signal amplification and sending the broadcast television signals after photoelectric conversion to the exchange management module.
With reference to the first possible implementation manner of the second aspect, the embodiment of the present application provides a second possible implementation manner of the second aspect, where the device further includes a mixing/distributing module, where the mixing/distributing module is connected to the EOC module;
and the mixing/distributing module is used for carrying out frequency spectrum mixing on the broadcast television signal and the EOC module and then distributing output.
With reference to the second possible implementation manner of the second aspect, an embodiment of the present application provides a third possible implementation manner of the second aspect, where the device further includes a power module, where the power module is connected to the exchange management module in a pluggable manner;
and the power supply module is used for converting alternating current into direct current and providing electric energy for the exchange management module, the EOC module, the light receiving and amplifying module and the mixing/distributing module.
With reference to the third possible implementation manner of the second aspect, the embodiment of the present application provides a fourth possible implementation manner of the second aspect, where the EOC module includes a first EOC module and a second EOC module;
the first EOC module and the second EOC module are connected with the exchange management module.
The embodiment of the application provides a light receiving device and equipment, wherein the light receiving device comprises: in the optical receiving device, the ONU module and the EOC module are connected with the exchange management module in a pluggable manner through the backboard connection module, in the use process, the ONU module performs photoelectric conversion on the IP data signals and then sends the IP data signals after photoelectric conversion to the exchange management module, so that the EOC module receives the IP data signals sent by the exchange management module after integration and modulates/demodulates the IP data signals, transmission before the IP data signals enter a user is realized, and through the design of modeling in the device, the connection is effectively simplified, and the installation and maintenance of equipment are more convenient.
Further, the light receiving device provided by the embodiment of the application comprises: in the optical receiving equipment, ONU equipment is integrated in the exchange management module, and the EOC module is connected with the exchange management module in a pluggable manner through the back plate connection module.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a structural connection diagram of a light receiving device in the related art;
fig. 2 shows a schematic structure of a light receiving device in the related art;
fig. 3 shows a block diagram of a light receiving device provided by an embodiment of the present application;
fig. 4 is a structural connection diagram showing a light receiving device provided by an embodiment of the present application;
fig. 5 shows a structural connection diagram of the light receiving device provided by the embodiment of the present application;
fig. 6 shows a structural connection diagram of a backplane connection module according to an embodiment of the present disclosure.
Icon: a 1-ONU module; a 2-EOC module; 3-a backboard connecting module; 4-an exchange management module; 5-ONU equipment; 6-a light receiving amplifying module; 7-a power module.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
Currently, broadcast television, broadband networks and the like are widely used in life of people, but related devices are required to be accessed into a user room before the broadcast television, the broadband networks and the like are used. Because the types and the packaging forms of the access devices are different, for example, ONU devices, EOC local side devices, optical receivers and the like, when the devices are connected, connection needs to be performed between the devices, and then, a plurality of devices after connection need to be packaged in a large box again. Although there is an integration device at present, that is, an ONU device, an EOC local side device, an optical receiver, and the like are integrated in the same housing, in this connection mode, the ONU device, the EOC local side device, and the optical receiver may share a power source, but when the device is used to transmit an IP data signal, the connection of the product in this package form is still complicated in the actual use process, and when any device integrated in the housing fails, the housing needs to be opened to check the failed device one by one, which is time-consuming and labor-consuming.
Based on this, the embodiments of the present application provide a light receiving device and equipment, and are described below by way of embodiments.
Example 1
Referring to fig. 3, 4 and 6, the light receiving device proposed in the present embodiment includes: the ONU module 1, the EOC module 2, the backboard connecting module 3 and the exchange management module 4 which are arranged separately are connected with the exchange management module 4 in a pluggable manner through the backboard connecting module 3, and the exchange management module 4 and the ONU module 1 are respectively and independently arranged, so that the function independence of each module can be ensured. Above-mentioned each module is all packaged in a field type machine case, and field type machine case is mostly metal casing, and has insulating material and waterproof material in this metal casing outside coating to enable this machine case to have good insulating effect and waterproof effect, ensured the electrical safety of each module. The die-casting material adopted by the metal shell must meet the (die-casting aluminum alloy) GB/T15115-2009 rule, the shell has good sealing performance, meets the standard IP67 grade requirement of GB4208-2008 'shell protection grade (IP sign)', ensures the water and moisture resistance of equipment, supports two mounting modes of field suspension and wall hanging, and meets the indoor and field environment deployment requirements according to different use environments. When in connection, each module is spliced on the backboard connecting line module 3 in a plug-in card mode so as to realize the communication of electric signals, and thus, the individual replacement of each module is also convenient. The backboard connecting module 3 completes high-speed data signal transmission, control and management signal transmission among the modules, supports functions of module identification, misplug alarm and the like, and meanwhile, the design can ensure that equipment and backboard are not damaged by misplug. In the use process, the ONU module 1 performs photoelectric conversion on the IP data signals and sends the IP data signals after photoelectric conversion to the exchange management module 4, the EOC module 2 receives the IP data signals sent by the exchange management module 4 after integration and modulates/demodulates the IP data signals so as to realize the access and use of the IP data signals, and the transmission of the IP data signals is realized conveniently and rapidly.
In addition, for transmitting broadcast television signals, the optical receiving apparatus further includes a separately provided optical receiving and amplifying module 6, and the optical receiving and amplifying module 6 is connected to the switching management module 4 through the backplane connection module 3, and it should be noted that the connection here is also a modular pluggable connection, that is, the optical receiving and amplifying module 6 is connected to the switching management module 4 as a separate module through the backplane connection module 3 in a pluggable manner. When in use, the light receiving and amplifying module 6 performs photoelectric conversion on the broadcast television signals, then performs radio frequency signal amplification, and sends the broadcast television signals after photoelectric conversion to the exchange management module 4, so as to complete the transmission of the broadcast television signals, thereby enabling a user to realize the purpose of watching television broadcasting.
In addition, the optical receiving device further comprises a mixing/distributing module, the mixing/distributing module is connected with the EOC module 2, the mixing/distributing module carries out frequency spectrum mixing on the broadcast television signals and the EOC module 2 and distributes output, the mixing/distributing module supports 1-path or 2-path radio frequency output, and the HP/LP is capable of supporting pluggable operation, so that the subsequent operation frequency spectrum adjustment is facilitated. The mixing/distributing module structure is not defined and the standard requirement needs to be met.
In addition, the light receiving device further comprises a power module 7, the power module 7 is connected with the exchange management module 4 in a pluggable manner, and the power module 7 is used for converting alternating current into direct current and providing electric energy for the exchange management module 4, the ONU module 1, the EOC module 2, the light receiving amplifying module 6 and the mixing/distributing module. The alternating current power input interface is arranged on the power module 7, the power connector is directly connected to the power module 7 by a 4PIN connector, and the metal sheet is not touched by the hand contact part, so that the use safety of a user is ensured.
The EOC module 2 comprises a first EOC module and a second EOC module, both of which are connected to the exchange management module 4. In the device, the first EOC module and the second EOC module form a bidirectional EOC module 2 to complete modulation/demodulation of data signals, the data transmission rate of the EOC module 2 is more than 300Mbps, and the time delay is less than 10ms. On one hand, the method satisfies the longitudinal compatibility, namely, the evolution can be carried out to higher bandwidth in a mode of replacing a module; on the other hand, the method meets the requirement of transverse compatibility, namely, the product intercommunication of different manufacturers with different technologies is supported.
In summary, the light receiving device provided in the present embodiment includes: the ONU module 1, the EOC module 2, the backboard connecting module 3 and the exchange management module 4 which are arranged separately are connected with the exchange management module 4 in a pluggable manner through the backboard connecting module 3, and when the ONU module 1 works, the ONU module 1 performs photoelectric conversion on IP data signals and sends the IP data signals after the photoelectric conversion to the exchange management module 4, so that the EOC module 2 receives the IP data signals sent by the exchange management module 4 after integration and modulates/demodulates the IP data signals, and through the arrangement, the number of wires between devices is effectively reduced, and the installation and maintenance of users are facilitated.
Example 2
Referring to fig. 3, 5 and 6, the present embodiment provides a light receiving apparatus including: the EOC module 2, the backboard connecting module 3 and the exchange management module 4 are arranged separately, wherein ONU equipment 5 is integrated in the exchange management module 4 in the optical receiving equipment, and the ONU module 1 is integrated in the exchange management module 4, so that the installation space can be effectively saved while the function of the modules is ensured. The EOC module 2 is connected with the exchange management module 4 in a pluggable manner through the backboard connecting module 3, all the modules are packaged in a field type chassis, most of the field type chassis is a metal shell, and insulating materials and waterproof materials are coated on the outer side of the metal shell, so that the chassis has good insulating effect and waterproof effect, and the electricity safety of all the modules is guaranteed. The die-casting material adopted by the metal shell must meet the (die-casting aluminum alloy) GB/T15115-2009 rule, the shell has good sealing performance, meets the standard IP67 grade requirement of GB4208-2008 'shell protection grade (IP sign)', ensures the water and moisture resistance of equipment, supports two mounting modes of field suspension and wall hanging, and meets the indoor and field environment deployment requirements according to different use environments. When in connection, each module is spliced on the backboard connecting line module 3 in a plug-in card mode so as to realize the communication of electric signals, and thus, the individual replacement of each module is also convenient. The backboard connecting module 3 completes high-speed data signal transmission, control and management signal transmission among the modules, supports functions of module identification, misplug alarm and the like, and meanwhile, the design can ensure that equipment and backboard are not damaged by misplug.
In the use process, the ONU equipment 5 performs photoelectric conversion on the IP data signals, sends the IP data signals subjected to photoelectric conversion to the exchange management module 4 for processing, and the EOC module 2 receives the IP data signals sent by the exchange management module 4 after processing and modulates/demodulates the IP data signals, so that the transmission of the IP data signals is realized conveniently and rapidly. Here, it should be noted that the ONU device 5 functions the same as the ONU module 1.
In addition, the light receiving device further comprises a light receiving amplifying module 6 which is arranged separately, wherein the light receiving amplifying module 6 is connected with the exchange management module 4 through the back board connecting module 3, namely, the light receiving amplifying module 6 is used as a single module and is connected with the exchange management module 4 in a pluggable manner through the back board connecting module 3. The optical receiving and amplifying module 6 performs photoelectric conversion on the broadcast television signal, amplifies the radio frequency signal, and sends the broadcast television signal after photoelectric conversion to the exchange management module 4, so that the transmission of the broadcast television signal is completed, and the purpose of watching television broadcasting is achieved for a user.
The optical receiving equipment also comprises a mixing/distributing module, wherein the mixing/distributing module is connected with the EOC module 2, the mixing/distributing module carries out frequency spectrum mixing on the broadcast television signals and the EOC module 2 and distributes output, the mixing/distributing module supports 1-path or 2-path radio frequency output, and the HP/LP support can be plugged and pulled out, so that the subsequent working frequency spectrum adjustment is facilitated. The mixing/distributing module structure is not defined and the standard requirement needs to be met.
The light receiving device further comprises a power module 7, wherein the power module 7 is connected with the exchange management module 4 in a pluggable manner, the power module 7 converts alternating current into direct current, and provides electric energy for the exchange management module 4, the EOC module 2, the light receiving amplifying module 6 and the mixing/distributing module.
The alternating current power input interface is arranged on the power module 7, the power connector is directly connected to the power module 7 by a 4PIN connector, and the metal sheet is not touched by the hand contact part, so that the use safety of a user is ensured.
Furthermore, the EOC module 2 comprises a first EOC module and a second EOC module, both of which are connected to the exchange management module 4. In the device, the first EOC module and the second EOC module form a bidirectional EOC module 2 to complete modulation/demodulation of data signals, the data transmission rate of the EOC module 2 is more than 300Mbps, and the time delay is less than 10ms. On one hand, the method satisfies the longitudinal compatibility, namely, the evolution can be carried out to higher bandwidth in a mode of replacing a module; on the other hand, the method meets the requirement of transverse compatibility, namely, the product intercommunication of different manufacturers with different technologies is supported.
In summary, the light receiving apparatus provided in the present embodiment includes: the EOC module 2, the backboard connecting module 3 and the exchange management module 4 are arranged separately, wherein ONU equipment 5 is integrated in the exchange management module 4, the EOC module 2 is connected with the exchange management module 4 in a pluggable manner through the backboard connecting module 3, the ONU equipment 5 is used for carrying out photoelectric conversion on IP data signals and sending the IP data signals subjected to photoelectric conversion to the exchange management module 4 for processing, and the EOC module 2 is used for receiving the IP data signals sent by the exchange management module 4 after processing and modulating/demodulating the IP data signals, so that wiring among the equipment is not needed, and the installation and maintenance of a user are facilitated.
Finally, it should be noted that: the above examples are only specific embodiments of the present application, and are not intended to limit the scope of the present application, but it should be understood by those skilled in the art that the present application is not limited thereto, and that the present application is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. An optical receiving apparatus, comprising: the system comprises an ONU module, an EOC module, a backboard connecting module, a switching management module and a light receiving and amplifying module which are arranged separately;
the ONU module and the EOC module are connected with the exchange management module in a pluggable manner through the backboard connecting module; the light receiving and amplifying module is connected with the exchange management module through the backboard connecting module;
the ONU module is used for carrying out photoelectric conversion on the IP data signals and sending the IP data signals after photoelectric conversion to the exchange management module;
the EOC module is used for receiving the IP data signals sent by the integrated exchange management module and modulating/demodulating the IP data signals;
the backboard connecting module is used for completing the transmission of high-speed data signals, control and management signals among the modules, and carrying out module identification and misplug alarm;
the optical receiving and amplifying module is used for carrying out photoelectric conversion on the broadcast television signals, carrying out radio frequency signal amplification, and sending the broadcast television signals after photoelectric conversion to the exchange management module.
2. The light receiving device of claim 1, further comprising a mixing/distribution module, the mixing/distribution module coupled to the EOC module;
and the mixing/distributing module is used for carrying out frequency spectrum mixing on the broadcast television signal and the EOC module and then distributing output.
3. The light receiving device of claim 2, further comprising a power module, the power module being removably coupled to the switching management module;
the power module is used for converting alternating current into direct current and providing electric energy for the exchange management module, the ONU module, the EOC module, the light receiving amplifying module and the frequency mixing/distributing module.
4. The light receiving device of claim 3, wherein the EOC module comprises a first EOC module and a second EOC module;
the first EOC module and the second EOC module are connected with the exchange management module.
5. Light receiving apparatus, characterized by comprising: the system comprises an EOC module, a backboard connecting module, a switching management module and a light receiving and amplifying module which are arranged separately, wherein ONU equipment is integrated in the switching management module;
the EOC module is connected with the exchange management module in a pluggable manner through the backboard connecting module; the light receiving and amplifying module is connected with the exchange management module through the backboard connecting module;
the ONU equipment is used for carrying out photoelectric conversion on the IP data signals and sending the IP data signals subjected to photoelectric conversion to the exchange management module for processing;
the EOC module is used for receiving the IP data signals sent by the exchange management module after processing and modulating/demodulating the IP data signals;
the backboard connecting module is used for completing the transmission of high-speed data signals, control and management signals among the modules, and carrying out module identification and misplug alarm;
the optical receiving and amplifying module is used for carrying out photoelectric conversion on the broadcast television signals, carrying out radio frequency signal amplification, and sending the broadcast television signals after photoelectric conversion to the exchange management module.
6. The light receiving arrangement of claim 5, further comprising a mixing/distribution module, the mixing/distribution module being coupled to the EOC module;
and the mixing/distributing module is used for carrying out frequency spectrum mixing on the broadcast television signal and the EOC module and then distributing output.
7. The light receiving arrangement of claim 6, further comprising a power module, the power module being removably connected to the exchange management module;
the power module is used for converting alternating current into direct current and providing electric energy for the exchange management module, the EOC module, the light receiving and amplifying module and the mixing/distributing module.
8. The light receiving arrangement of claim 7, wherein the EOC module comprises a first EOC module and a second EOC module;
the first EOC module and the second EOC module are connected with the exchange management module.
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| CN201710350258.8A CN106992817B (en) | 2017-05-17 | 2017-05-17 | Light receiving device and equipment |
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| CN101505440A (en) * | 2009-02-17 | 2009-08-12 | 武汉长光科技有限公司 | Bidirectional IP converting CATV optical fiber network based on PON |
| CN103595599A (en) * | 2012-12-31 | 2014-02-19 | 大唐电信科技股份有限公司 | Method for designing open type fused EOC |
| CN104253735A (en) * | 2013-06-27 | 2014-12-31 | 中兴通讯股份有限公司 | ONU (optical network unit), communication system and communication method |
| CN203457169U (en) * | 2013-07-30 | 2014-02-26 | 广东东研网络科技股份有限公司 | Field card-inserting type three-in-one intelligent integrated optical node equipment |
| CN203840350U (en) * | 2014-05-13 | 2014-09-17 | 深圳市螺光科技有限公司 | Optical node local-side device |
| CN206759462U (en) * | 2017-05-17 | 2017-12-15 | 华数传媒网络有限公司 | Optical pickup apparatus and equipment |
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