Photoelectric converter

Abstract

The invention discloses a photoelectric converter, and particularly relates to the field of photoelectric converters, the photoelectric converter comprises a main body, the outer surface of the top end of the main body is provided with a power indicating lamp and a power indicating lamp, and the outer surface of the front end of the power indicating lamp is provided with an F head, a DC power interface, an optical signal input port and a PON optical signal output port; the XG (S)-PON comprises a microprocessor, an output end of the microprocessor is provided with a radio frequency switch control circuit, an input end of the radio frequency switch control circuit is connected with a PWDM-PD three-terminal optical assembly, an input end of the PWDM-PD three-terminal optical assembly is connected with XGS-PON output, an output end of the radio frequency switch control circuit is connected with a CATV RF radio frequency amplification circuit, and the XG (S)-PON comprises an XGS-PON, an XG-PON and a G-PON. The indexes of the photoelectric converter can meet the use requirements of the majority of users; meanwhile, the internal structure is optimized, materials used in an old method are reduced by 20%, the economic benefit of an enterprise is remarkable, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The present invention relates to the field of photoelectric converters, and more specifically, to a photoelectric converter. Background Art

[0002] A photoelectric converter, also known as a fiber optic transceiver, is an Ethernet transmission media conversion unit that interchanges short-distance twisted pair electrical signals with long-distance optical signals. It is generally used in actual network environments where Ethernet cables cannot cover and optical fibers must be used to extend the transmission distance, and is usually positioned in the access layer of broadband metropolitan area networks.

[0003] At present, the photoelectric converter used in CATV cable TV FTTH adopts AGC fixed mode for output RF: such as receiving optical power -2~-12, output level such as 82dBuv fixed value, which has certain limitations when used. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a photoelectric converter, which is a solution for a XG(S)-PON 10G & 1000M optical broadband and cable TV CATV three-network integrated transmission access network that will be deployed on a large scale in the future, and relates to the technical field of 10G optical broadband, 1000M optical broadband, and CATV+F5G cable TV hybrid transmission solutions. The photoelectric converter receives the 1270 / 1577 & 1310 / 1490nm of the XG(S)-PON in the 1-fiber 5-wave OLT system and the CATV cable TV 1550nm hybrid access network, converts the 1550nm optical signal into a CATV radio frequency signal, and simultaneously splits and outputs 1270 / 1577 10G & 1310 / 1490nm 1000M optical signals to the ONU (optical modem). Optional functions: WEB network management / USB interface / ATT attenuation level, remote opening and closing of cable TV services through the WEB network; the USB interface is connected to other devices with 5V / 500mA Power supply function (such as a single-port ONU optical modem); the ATT attenuation button can adjust the output level from 0 to -20dB. The photoelectric converter indicators of the present invention can meet the usage requirements of the majority of users; at the same time, the internal structure is optimized, reducing the material usage by 20% of the old method, the enterprise's economic benefits are significant, and the goal of energy saving and emission reduction is achieved.

[0005] To achieve the above object, the present invention provides the following technical solution: an optoelectronic converter, comprising a main body, a power indicator light and a power indicator light are arranged on the top outer surface of the main body, and an F connector, a DC power interface, an optical signal input port and a PON optical signal output port are arranged on the front outer surface of the power indicator light; It also includes a microprocessor, the output end of the microprocessor is provided with a radio frequency switch control circuit, the input end of the radio frequency switch control circuit is connected to a PWDM-PD three-terminal optical component, the input end of the PWDM-PD three-terminal optical component is connected to an XGS-PON output, and the output end of the radio frequency switch control circuit is connected to a CATV RF radio frequency amplifier circuit. XG(S)-PON: includes XGS-PON, XG-PON, G-PON; XGS-PON: 10G symmetrical broadband passive optical network, 10G downstream and 10G upstream optical broadband, using wavelength 1270 / 1577nm; XG-PON: 10G asymmetric broadband passive optical network, 10G downstream and 1G upstream optical broadband, using wavelength 1270 / 1577nm; PON: Passive Optical Network, passive broadband optical network, using wavelength 1310 / 1490nm; GPON: Gigabit-Capable PON, Gigabit passive broadband optical network, using wavelength 1310 / 1490nm.

[0006] CATV RF: Audio and video cable TV signals with a bandwidth of 45~1000MHz and a receiving wavelength of 1550nm.

[0007] Furthermore, a network port is provided on the front outer surface of the power indicator light, through which the device status can be remotely detected and the device can be controlled.

[0008] Furthermore, a USB is provided on the front outer surface of the power indicator light, and 5V / 500mA power is supplied to the outside through the USB.

[0009] Furthermore, an ADJ attenuator is provided on the front outer surface of the power indicator light, and the output level is adjusted by the ADJ attenuator, and the adjustment range of the output level is 0 to -20dB.

[0010] Furthermore, after the power indicator light is connected to the power supply, the power indicator light turns green, the power indicator light 2 turns red when the received optical power is less than -15dBm, and turns green when -15dBm≤received power is less than +2dBm.

[0011] Furthermore, the F head is a cable TV RF output port, the DC power interface is connected to a 5V / 500mA power supply, the optical model input port optical signal includes XGS-PON, XG, GPON & CATV signals, and the PON optical signal output port optical signal includes XGS-PON, XG, GPON.

[0012] Technical effects and advantages of the present invention: 1. XG(S)-PON & CATV optical-to-electric converter is used in XGS-PON & CATV hybrid network to convert 1550nm optical signal into CATV RF signal, and simultaneously split and output 1270 / 1577 10G & 1310 / 1490nm Gigabit optical signal to ONU (optical modem), which is an active wavelength division multiplexing function.

[0013] 2. The uplink provides an SC / APC optical interface, the downlink provides an SC / UPC (or SC / APC) optical interface and CATVRF interface, and can be equipped with WEB network management / USB interface / ATT attenuator. The CATV RF interface can be used to turn on and off TV service through the network; USB has a 5V / 500mA power supply function; the ATT attenuator can adjust the output level to reduce the range of 20dB.

[0014] 3. Combining hardware and software technologies, the RF power amplification level, CSO, CTB, MER and other indicators of the photoelectric converter are reasonably optimized to meet the usage requirements of the majority of users.

[0015] 4. Combine the technology of hardware and network management software to realize remote turning on and off of cable TV services through the WEB network.

[0016] 5. Through hardware optimization, using a 5V / 1A power adapter, the photoelectric converter can add a USB interface with a 5V / 500mA external power supply function.

[0017] 6. Based on the existing traditional photoelectric converters, the circuit structure has been optimized, reducing the materials and costs by 20%, with high cost performance, increasing the company's market competitive advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention without any components.

[0019] Figure 2 It is a schematic diagram of the structure of the overall device with a network port of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the overall USB of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the integrated ADJ attenuator of the present invention.

[0022] Figure 5 Schematic diagram of the photoelectric converter of the present invention.

[0023] Figure 6 It is a schematic diagram of the composition structure of PDWM-PD of the present invention.

[0024] Figure 7 It is a logic block diagram of the photoelectric converter of the present invention.

[0025] The accompanying drawings are marked as follows: 1. power indicator light; 2. power indicator light; 3. F head; 4. DC power interface; 5. optical signal input port; 6. PON optical signal output port; 7. network port; 8. USB; 9. ADJ attenuator. DETAILED DESCRIPTION

[0026] The present invention provides Figure 1-7 The photoelectric converter shown includes a main body, a power indicator light 1 and a power indicator light 2 are arranged on the top outer surface of the main body, and an F connector 3, a DC power interface 4, an optical model input port 5 and a PON optical signal output port 6 are arranged on the front outer surface of the power indicator light 1; It also includes a microprocessor, the output end of the microprocessor is provided with a radio frequency switch control circuit, the RF radio frequency switch circuit: the RF radio frequency can be controlled on and off by the MCU software, CSO (second-order distortion), CTB (third-order distortion) calibration: after the CATVRF radio frequency signal is demodulated, it enters the pre-distortion network composed of resistors, capacitors, inductors, and Schottky diodes to calibrate the generated distortion, the input end of the radio frequency switch control circuit is connected to the PWDM-PD three-terminal optical component, the sampling of the input 1550nm optical signal: PD demodulates the 1550nm optical signal, samples the voltage at the positive electrode of the PD, and inputs it to the MCU for voltage value comparison, if it is greater than the comparison voltage value, the optical power indicator light is green, if it is lower than the comparison voltage value, the optical power indicator light is red to prompt, the input end of the PWDM-PD three-terminal optical component is connected to the XGS-PON output, the output end of the radio frequency switch control circuit is connected to the CATV RF radio frequency amplifier circuit, RF radio frequency signal amplification: the calibrated CATV RF signal enters SG101 (RF GaAs amplifier) ​​for 16dB signal amplification, and TV signal is output from RF port. There is transient protection circuit between RF amplifier and RF output port. When there is instant high voltage signal, it will be suppressed within a certain voltage range to prevent damage to internal circuit and externally connected equipment (such as TV set-top box). CATV signal demodulation: modulates the 1550nm wavelength of CATV signal, enters WDM, and then outputs from the transmission end of WDM to PD (photodiode), demodulating CATV RF signal. XG(S)-PON: includes XGS-PON, XG-PON, G-PON; XGS-PON: 10G symmetrical broadband passive optical network, 10G downstream and 10G upstream optical broadband, using wavelength 1270 / 1577nm; XG-PON: 10G asymmetric broadband passive optical network, 10G downstream and 1G upstream optical broadband, using wavelength 1270 / 1577nm; PON: Passive Optical Network, passive broadband optical network, using wavelength 1310 / 1490nm; GPON: Gigabit-Capable PON, Gigabit passive broadband optical network, using wavelength 1310 / 1490nm.

[0027] CATV RF: Audio and video cable TV signals with a bandwidth of 45~1000MHz and a receiving wavelength of 1550nm.

[0028] In a preferred embodiment, a network port 7 is provided on the front outer surface of the power indicator light 1, through which the device status can be remotely detected and the device can be controlled, and the photoelectric converter parameters can be browsed and the radio frequency of the photoelectric converter can be remotely controlled on and off through the WEB network. After the network port is connected to the network through a network cable, the data enters the Ethernet data transceiver to parse the second-layer network data, and after processing, enters the MCU to decompose and process the data.

[0029] In a preferred embodiment, a USB8 is provided on the front outer surface of the power indicator light 1, and 5V / 500mA power is supplied to the outside through the USB8, and a 5V / 500mA power supply function can be provided to external devices through a USB line.

[0030] In a preferred embodiment, an ADJ attenuator 9 is provided on the front outer surface of the power indicator light 1. The output level is adjusted by the ADJ attenuator 9. The adjustment range of the output level is 0 to -20dB. It can be installed between the amplifier tube and the output port. If this function is not needed, a 0 ohm resistor can be welded to short-circuit.

[0031] In a preferred embodiment, after the power indicator light 1 is connected to the power supply, the power indicator light turns green, and the power indicator light 2 turns red when the received optical power is less than -15dBm, and turns green when -15dBm≤received power is less than +2dBm.

[0032] In a preferred embodiment, the F head 3 is a cable TV RF output port, the DC power interface 4 is connected to a 5V / 500mA power supply, and the optical signal of the optical model input port 5 includes XGS-PON, XG, GPON & CATV signals. In a preferred embodiment, the optical signal of the PON optical signal output port 6 includes XGS-PON, XG, GPON, and XG(S)-PON optical signal transmission: the front-end 1270 / 1577 & 1310 / 1490 + 1550nm mixed wavelength enters the PWDW-PD, and the 1270 / 1577 & 1310 / 1490nm wavelength is output from the reflective end optical fiber of the WDM to the optical port component (connection flange), which can be connected to the terminal ONU (optical modem) through an optical fiber jumper to access the Gigabit and 10 Gigabit optical networks.

[0033] How it works 1. XG(S)-PON optical signal transmission: The front-end 1270 / 1577 & 1310 / 1490 + 1550nm mixed wavelength enters the PWDW-PD, and the 1270 / 1577 & 1310 / 1490nm wavelength is output from the reflective end optical fiber of the WDM to the optical port component (connection flange), which can be connected to the terminal ONU (optical modem) through the optical fiber jumper to access the Gigabit and 10G optical network.

[0034] 2. CATV RF signal demodulation: The 1550nm wavelength of the CATV RF signal is modulated, and after entering the WDM, it is output from the transmission end of the WDM and enters the PD (photodiode) to demodulate the CATV RF signal.

[0035] 3. Sampling of input 1550nm optical signal: PD demodulates 1550nm optical signal, samples voltage at the positive pole of PD, and inputs it to MCU for voltage value comparison. If it is greater than the comparison voltage value, the optical power indicator light is green; if it is lower than the comparison voltage value, the optical power indicator light is red.

[0036] 4: CSO (second-order distortion) and CTB (third-order distortion) calibration: After the CATV RF signal is demodulated, it enters the pre-distortion network composed of resistors, capacitors, inductors, and Schottky diodes to calibrate the generated distortion.

[0037] 5: RF radio frequency switching circuit: The RF radio frequency can be turned on and off by MCU software.

[0038] 6: RF signal amplification: The calibrated CATV RF signal enters SG101 (RF gallium arsenide amplifier tube) for 16dB signal amplification and outputs the TV signal from the RF port.

[0039] 7: There is a transient protection circuit between the RF amplifier tube and the RF output port. When there is a momentary high voltage signal, it will be suppressed within a certain voltage range to prevent damage to the internal circuit and externally connected devices (such as TV set-top boxes).

[0040] 8: The device is designed with three optional components 8.1 Network Port You can browse the parameters of the photoelectric converter and remotely control the RF on and off of the photoelectric converter through the WEB network. After the network port is connected to the network through the network cable, the data enters the Ethernet data transceiver to parse the second-layer network data, and after processing, it enters the MCU to decompose and process the data.

[0041] 8.2 ADJ Attenuator It can be installed between the amplifier tube and the output port. If this function is not needed, a 0 ohm resistor can be welded to short-circuit it.

[0042] 8.3 USB It can provide 5V / 500mA power supply to external devices via USB cable.

Claims

1. A photoelectric converter, comprising a main body, characterized in that: The top outer surface of the main body is provided with a power indicator light (1) and a power indicator light (2); the front outer surface of the power indicator light (1) is provided with an F connector (3), a DC power interface (4), an optical signal input port (5) and a PON optical signal output port (6); It also includes a microprocessor, the output end of the microprocessor is provided with a radio frequency switch control circuit, the input end of the radio frequency switch control circuit is connected to a PWDM-PD three-terminal optical component, the input end of the PWDM-PD three-terminal optical component is connected to an XGS-PON output, and the output end of the radio frequency switch control circuit is connected to a CATV RF radio frequency amplifier circuit.

2. A photoelectric converter according to claim 1, characterized in that: The front outer surface of the power indicator light (1) is provided with a network port (7), through which the device status can be remotely detected and the device can be controlled.

3. A photoelectric converter according to claim 1, characterized in that: A USB (8) is provided on the front outer surface of the power indicator light (1), and 5V / 500mA power is supplied to the outside through the USB (8).

4. A photoelectric converter according to claim 1, characterized in that: An ADJ attenuator (9) is provided on the front outer surface of the power indicator light (1), and the output level is adjusted by the ADJ attenuator (9), and the adjustment range of the output level is 0 to -20 dB.

5. The photoelectric converter according to claim 1, characterized in that: After the power indicator light (1) is connected to the power supply, the power indicator light turns green, and the power indicator light (2) turns red when the received optical power is less than -15dBm, and turns green when -15dBm≤received power is less than +2dBm.

6. A photoelectric converter according to claim 1, characterized in that: The F head (3) is a cable TV RF output port, the DC power interface (4) is connected to a 5V / 500mA power supply, the optical model input port (5) includes an optical signal of XGS-PON, XG, GPON & CATV, and the optical signal of the PON optical signal output port (6) includes an optical signal of XGS-PON, XG, GPON.

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