CN114019618A - Ethernet changes wireless optical transmission subassembly - Google Patents
Ethernet changes wireless optical transmission subassembly Download PDFInfo
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- CN114019618A CN114019618A CN202111249884.0A CN202111249884A CN114019618A CN 114019618 A CN114019618 A CN 114019618A CN 202111249884 A CN202111249884 A CN 202111249884A CN 114019618 A CN114019618 A CN 114019618A
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- Prior art keywords
- ethernet
- signal
- optical transmission
- wireless optical
- processing module
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
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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
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
Abstract
An Ethernet-to-wireless optical transmission assembly comprises a shell, a signal acquisition module, a power conversion module, an Ethernet signal processing module and a wireless optical transmission assembly, wherein the signal acquisition module comprises a connector and a network transformer, and the connector is connected with the Ethernet signal processing module through the network transformer; the network transformer is mainly used for receiving and isolating Ethernet signals transmitted by an external system and then transmitting the signals to the Ethernet signal processing module, and can also receive signals of the Ethernet signal processing module; the Ethernet signal processing module is mainly used for completing the conversion of Ethernet signals and differential signals; the wireless optical transmission component is used for outputting and receiving optical signals, the Ethernet wireless optical transmission component can convert input Ethernet signals into parallel light beams and transmit the parallel light beams in free space for data transmission, and high-speed, small-sized and long-distance point-to-point wireless optical signal communication is realized through the technology.
Description
Technical Field
The invention belongs to the technical field of wireless optical communication, and particularly relates to an Ethernet-to-wireless optical transmission assembly.
Background
In the traditional optical module, a light beam with a certain divergence angle emitted by a laser is focused on the end face of an optical contact pin and enters an optical fiber, and light output by the optical fiber is focused on a photosensitive surface of a detector after being converged by a lens for signal transmission. The problems of large loss, more plugging times, short service life and the like exist.
Wireless optical communication refers to transmission of information using light in the optical domain with free space as a transmission medium. Referring to fig. 1, an input signal is connected to a light emitting module through an interface circuit, a driving circuit drives a light source to emit light so as to modulate the signal to a light emitting source, the signal is wirelessly transmitted to a receiving end through a transmitting optical system, a receiving optical system converges the received light signal to a detector, the received light signal is demodulated by the detector, and the demodulated signal is restored into a digital signal, and the digital signal is output through the interface circuit and transmitted to a terminal device. The problems of large loss, more plugging times and the like are solved; however, the wireless optical module interface is a high-speed differential signal, the application field is narrow, and other modules need to be matched to convert an electric signal into a high-speed differential signal and then access the high-speed differential signal to the wireless optical module for transmission, so that the problems of large volume, low conversion efficiency and the like exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a high-speed, ultra-thin and ultra-small Ethernet-to-wireless optical transmission assembly which can realize the conversion between Ethernet signals and wireless optical transmission, resist electromagnetic radiation interference and is free from contact.
The invention provides an Ethernet-to-wireless optical transmission component, which comprises a shell 1, a signal acquisition module, a power supply conversion module, an Ethernet signal processing module and a wireless optical transmission component,
the signal acquisition module comprises a connector 5 connected with an external network system and a network transformer arranged in the shell 1, and the connector 5 is connected with the Ethernet signal processing module through the network transformer;
the network transformer is mainly used for receiving and isolating Ethernet signals transmitted by an external system and then transmitting the signals to the Ethernet signal processing module, and can also receive signals of the Ethernet signal processing module;
the Ethernet signal processing module is mainly used for completing the conversion of Ethernet signals and differential signals;
the wireless optical transmission assembly is used for receiving the differential signal from the Ethernet signal processing module, converting the differential signal into an optical signal and outputting the optical signal, and the wireless optical transmission assembly can also receive the optical signal, convert the received optical signal into the differential signal and transmit the differential signal to the Ethernet signal processing module;
the shell 1 is provided with a power interface 4 communicated with an external power supply, and the power conversion module is electrically connected with the power interface 4.
Preferably, the wireless optical transmission assembly and the ethernet adapting printed board 3 in the ethernet signal processing module are integrated on the housing 1, so that the space is saved in height and volume, and the miniaturization is facilitated.
Preferably, the wireless optical transmission assembly comprises at least one optical transmitting end 21 and at least one optical receiving end 22; the optical transmitting terminal 21 is used for converting the electrical signal from the ethernet signal processing module into an optical signal and then transmitting the optical signal,
the optical receiving end 22 is configured to convert the received optical signal into an electrical signal and send the electrical signal to the ethernet signal processing module.
Preferably, a driver and a VCSEL laser are disposed in the light emitting end 21, and the driver converts the received differential signal into an electrical signal and drives the VCSEL laser to emit light.
Preferably, a PIN diode and a transimpedance amplifier are arranged in the light receiving end 22.
Preferably, the light receiving end 22 and the light emitting end 21 are both provided with a lens 6, and the lens arranged in the light emitting end 21 changes the light beam emitted by the VCSEL laser into parallel-like light; a lens mounted at the light receiving end 22 converges the received parallel-like light to the PIN diode.
Preferably, a clock module and a restart module are further installed in the housing 1, and both the clock module and the restart module are electrically connected with the ethernet signal processing module.
The invention has the following advantages:
1. the invention relates to an Ethernet-to-wireless optical communication assembly, which overcomes the defects of the prior art and has the advantages of miniaturization, high reliability, long transmission distance, good environmental adaptability, stable transmission signal, electromagnetic radiation interference resistance and the like.
2. The Ethernet wireless optical transmission component can convert the input Ethernet signals into parallel light beams and transmit the parallel light beams in free space for data transmission, high-speed, small-sized and long-distance point-to-point wireless optical signal communication is realized through the technology, the traditional optical fiber connector and cable can be replaced, and the design that the Ethernet signals are adopted at the input end is more convenient for application in various environments and fields, so that the development trend of complete cableless and connectorless is realized.
The foregoing is a summary of the present invention, and for the purpose of making clear the technical means of the present invention, the present invention can be implemented according to the content of the description, and for the purpose of making the above and other objects, features, and advantages of the present invention more comprehensible, the following preferred embodiments are described in detail:
drawings
Fig. 1 is a schematic diagram of conventional free space optical communication.
Fig. 2 is a schematic perspective view of an ethernet to wireless optical transmission assembly according to this embodiment.
Fig. 3 is a schematic structural diagram of the ethernet-to-wireless optical transmission assembly in this embodiment.
Fig. 4 is a schematic circuit diagram of the ethernet-to-wireless optical transmission module in this embodiment.
Fig. 5 is a schematic diagram of the optical path design in this embodiment.
Fig. 6 is a diagram of an application scenario of the ethernet to wireless optical transmission device according to this embodiment.
Reference numerals
The system comprises a shell 1, a light emitting end 21, a light receiving end 22, an Ethernet switching printed board 3, a power interface 4, a connector 5, a lens 6, a switch module 7 and a network transformer 8.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description of the embodiments, structures, features and effects of the ethernet to wireless optical transmission component according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 2 to 6, an ethernet-to-wireless optical transmission assembly includes a housing 1, a wireless optical transmission assembly, a signal acquisition module, a power conversion module, and an ethernet signal processing module, where the housing 1 is made of an aluminum alloy material, and the housing 1 has a small volume, a light weight, and a good replaceability. The shell 1 is provided with a power interface 4 communicated with an external power supply, and the power conversion module is electrically connected with the power interface 4. A CLOCK module (CLOCK) and a RESET module (RESET) are also installed in the housing 1, and the CLOCK module and the RESET module are electrically connected with the ethernet signal processing module.
In this embodiment, the wireless optical transmission module and the ethernet adapting printed board 3 in the ethernet signal processing module are integrated on the housing 1, so that the space is saved in height and volume, and the miniaturization is facilitated.
The signal acquisition module comprises a connector 5 connected with an external network system and a network transformer 8 arranged in the shell 1, the network transformer 8 is a gigabit network transformer, in other embodiments of the invention, the connector 5 in a physical form can be omitted, and other electrical interface forms such as crimping, meter connection and the like are adopted to connect with a network cable in the external network system, the connector 5 is arranged on the shell 1, the external network system connector 5 transmits an Ethernet signal to the network transformer, and the network transformer receives and isolates the Ethernet signal transmitted by the external system and then transmits the Ethernet signal to the Ethernet signal processing module.
The Ethernet signal processing module receives the Ethernet signal and converts the Ethernet signal into a pair of high-speed differential signals, then the Ethernet signal processing module sends the converted high-speed differential signals to the wireless optical transmission assembly, and the wireless optical transmission assembly receives the differential signals and converts the differential signals into optical signals to output.
The wireless optical transmission assembly includes at least one light emitting end 21(T end) and at least one light receiving end 22(R end), and the wireless optical transmission assembly can simultaneously realize the emission and the reception of wireless optical signals, i.e. the wireless optical transmission assembly integrates the light emitting end 21 and the light receiving end 22 into a whole, and in this embodiment, the wireless optical transmission assembly is dual-channel, i.e. includes one light emitting end 21(T end) and one light receiving end 22(R end).
The light emitting end 21 receives the differential signal sent by the ethernet signal processing module and then converts the differential signal into an optical signal to send out, a driver and a VCSEL laser are arranged in the light emitting end 21, and the driver converts the received high-speed differential signal into a current signal and drives the VCSEL laser to emit light.
The optical receiving terminal 22 is configured to convert a received optical signal into a differential signal and then send the differential signal to the ethernet signal processing module, a PIN diode and a transimpedance amplifier are arranged in the optical receiving terminal 22, the receiving terminal 22 converts the optical signal with varying intensity into the differential signal after the received optical signal is processed by the PIN diode and the transimpedance amplifier (for example, converts an electrical signal into an optical signal, and replaces the variation of the optical power with 1 and 0 representing a digital signal), and then sends the differential signal to the ethernet signal processing module.
The light receiving end 22 and the light emitting end 21 each have a lens 6 mounted therein. The lens installed in the light emitting end 21 changes the light beam emitted by the VCSEL laser into parallel-like light with a spot size of 6mm, and the parallel-like light can meet the requirement of a transmission distance of 200 mm. The guaranteed beam of the 6mm spot can be coupled to the PD plane (i.e. at the PIN diode) through an 8mm aperture converging lens mounted in the receiving end 22.
Principle of operation
The network transformer receives and isolates the Ethernet signal transmitted by an external system and then transmits the Ethernet signal to the Ethernet signal processing module, the Ethernet signal processing module converts the Ethernet signal into a pair of high-speed differential signals and then transmits the signals to the wireless optical transmission assembly, and the light emitting end 21 in the wireless optical transmission assembly converts the differential signals into optical signals after receiving the optical signals and then converts the optical signals into quasi-parallel light through a lens arranged in the light emitting end 21 and then transmits the quasi-parallel light.
When the ethernet-to-wireless optical transmission assembly of this embodiment is used to receive an external optical signal, the external optical signal is converged to the PIN diode via the lens installed in the optical receiving terminal 22, the received optical signal is converted into a differential signal by the processing of the PIN diode and the transimpedance amplifier and is sent to the ethernet signal processing module, and the ethernet signal processing module converts the received differential signal into an ethernet signal, and the ethernet signal is processed by the network transformer and then transmitted out through the connector 5
The power supply conversion module converts the voltage of an external power supply, converts the voltage of the external power supply into working voltage required by the operation of the network transformer, the Ethernet signal processing module or the wireless optical transmission assembly, and provides power for the network transformer, the Ethernet signal processing module and the wireless optical transmission assembly.
The shell 1 is also internally provided with a switch module 7 for controlling the work of the Ethernet-to-wireless optical transmission component of the embodiment.
The ethernet wireless optical transmission component in this embodiment is a conversion of single-path gigabit ethernet wireless optical transmission, but of course, in other embodiments of the present invention, it can also be used as a multiplexing, that is, the wireless optical transmission component is provided with a plurality of light emitting ends 21 and a plurality of light receiving ends 22, thereby realizing the conversion of multipath ethernet into multipath wireless optical transmission.
The ethernet wireless optical transmission module of the present invention can meet the needs of optical fiber communication in smart cells, optical fiber to desktop telecommunications, and other industries, and can simply and conveniently realize the interconnection of a main server, a repeater, an exchange (HUB), and a terminal, referring to fig. 6, the terminal is connected to the ethernet wireless optical transmission module a of the present invention through a shielding network cable, the exchange is connected to the ethernet wireless optical transmission module B of the present invention through a shielding network cable, and wireless optical transmission can be realized between the ethernet wireless optical transmission module a and the ethernet wireless optical transmission module B.
The Ethernet wireless optical transmission component can convert the input Ethernet signals into parallel light beams and transmit the parallel light beams in free space for data transmission. The wireless optical transmission can make the interconnection density close to the diffraction limit of light, has no limitation of a channel on the bandwidth, and is easy to realize reconstruction interconnection. The technology is used for realizing high-speed, small-sized and long-distance point-to-point wireless optical signal communication, and can replace the traditional optical fiber connector and cable, and the transmission speed reaches 2.5Gbps level. The design that the input end adopts the Ethernet signal is more convenient for the application of various environments and fields, thereby realizing the development trend of complete no-cable and no-connector.
The invention relates to an Ethernet-to-wireless optical communication assembly, which overcomes the defects of the prior art and has the advantages of miniaturization, high reliability, long transmission distance, good environmental adaptability, stable transmission signal, electromagnetic radiation interference resistance and the like.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.
Claims (7)
1. An ethernet to wireless optical transmission module, characterized in that: the wireless optical transmission device comprises a shell (1), a signal acquisition module, a power conversion module, an Ethernet signal processing module and a wireless optical transmission assembly, wherein the signal acquisition module comprises a connector (5) connected with an external network system and a network transformer (8) arranged in the shell (1), and the connector (5) is connected with the Ethernet signal processing module through the network transformer;
the network transformer (8) is mainly used for receiving and isolating Ethernet signals transmitted by an external system and then transmitting the signals to the Ethernet signal processing module, and can also receive signals of the Ethernet signal processing module;
the Ethernet signal processing module is mainly used for completing the conversion of Ethernet signals and differential signals;
the wireless optical transmission assembly is used for receiving the differential signal from the Ethernet signal processing module, converting the differential signal into an optical signal and outputting the optical signal, and the wireless optical transmission assembly can also receive the optical signal, convert the received optical signal into the differential signal and transmit the differential signal to the Ethernet signal processing module;
the shell (1) is provided with a power interface (4) communicated with an external power supply, and the power conversion module is electrically connected with the power interface (4).
2. An ethernet to wireless optical transmission assembly according to claim 1, wherein: the wireless optical transmission assembly and the Ethernet switching printed board (3) in the Ethernet signal processing module are integrated on the shell (1), so that the space is saved in height and volume, and the miniaturization is realized.
3. An ethernet to wireless optical transmission assembly according to claim 1, wherein: the wireless optical transmission assembly comprises at least one light emitting end (21) and at least one light receiving end (22); the optical transmitting end (21) is used for converting the electric signal from the Ethernet signal processing module into an optical signal and then transmitting the optical signal, and the optical receiving end (22) is used for converting the received optical signal into the electric signal and then transmitting the electric signal to the Ethernet signal processing module.
4. An ethernet to wireless optical transmission assembly according to claim 3, wherein: a driver and a VCSEL laser are arranged in the light emitting end (21), and the driver converts the received differential signal into an electric signal and drives the VCSEL laser to emit light.
5. An ethernet to wireless optical transmission assembly according to claim 3, wherein: the light receiving end (22) is internally provided with a PIN diode and a trans-impedance amplifier.
6. An ethernet to wireless optical transmission assembly according to claim 3, wherein: the light receiving end (22) and the light emitting end (21) are internally provided with lenses (6), and the lenses arranged in the light emitting end (21) change light beams emitted by the VCSEL laser into quasi-parallel light; a lens arranged at the light receiving end (22) converges the received parallel-like light to the PIN diode.
7. An ethernet to wireless optical transmission assembly according to claim 1, wherein: the shell (1) is also internally provided with a clock module and a restarting module which are electrically connected with the Ethernet signal processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249884.0A CN114019618A (en) | 2021-10-26 | 2021-10-26 | Ethernet changes wireless optical transmission subassembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249884.0A CN114019618A (en) | 2021-10-26 | 2021-10-26 | Ethernet changes wireless optical transmission subassembly |
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| CN114019618A true CN114019618A (en) | 2022-02-08 |
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| CN202111249884.0A Pending CN114019618A (en) | 2021-10-26 | 2021-10-26 | Ethernet changes wireless optical transmission subassembly |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825656A (en) * | 2013-12-10 | 2014-05-28 | 上海航天测控通信研究所 | Visible light communication system based on TCP/IP and method |
| CN104038285A (en) * | 2014-06-16 | 2014-09-10 | 上海航天电子通讯设备研究所 | TCP/IP (Transmission Control Protocol/Internet Protocol) based indoor visible light communication node and two-way communication system |
| CN107204929A (en) * | 2017-05-16 | 2017-09-26 | 湖南大学 | Wireless router based on laser visible light communication |
| CN111082865A (en) * | 2019-11-29 | 2020-04-28 | 徐州智谷光频产业研究院有限公司 | Novel point-to-point visible light communication transceiver of wireless network bridge |
| CN112564791A (en) * | 2020-11-30 | 2021-03-26 | 中航光电科技股份有限公司 | Wireless optical transmission module and assembly thereof |
| CN112636833A (en) * | 2020-12-21 | 2021-04-09 | 厦门大学 | Uplink and downlink visible light communication link device based on laser |
| CN113014583A (en) * | 2021-02-26 | 2021-06-22 | 中国电子科技集团公司第五十四研究所 | Laser optical shutter |
-
2021
- 2021-10-26 CN CN202111249884.0A patent/CN114019618A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825656A (en) * | 2013-12-10 | 2014-05-28 | 上海航天测控通信研究所 | Visible light communication system based on TCP/IP and method |
| CN104038285A (en) * | 2014-06-16 | 2014-09-10 | 上海航天电子通讯设备研究所 | TCP/IP (Transmission Control Protocol/Internet Protocol) based indoor visible light communication node and two-way communication system |
| CN107204929A (en) * | 2017-05-16 | 2017-09-26 | 湖南大学 | Wireless router based on laser visible light communication |
| CN111082865A (en) * | 2019-11-29 | 2020-04-28 | 徐州智谷光频产业研究院有限公司 | Novel point-to-point visible light communication transceiver of wireless network bridge |
| CN112564791A (en) * | 2020-11-30 | 2021-03-26 | 中航光电科技股份有限公司 | Wireless optical transmission module and assembly thereof |
| CN112636833A (en) * | 2020-12-21 | 2021-04-09 | 厦门大学 | Uplink and downlink visible light communication link device based on laser |
| CN113014583A (en) * | 2021-02-26 | 2021-06-22 | 中国电子科技集团公司第五十四研究所 | Laser optical shutter |
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