CN211981872U - Highly integrated optical network double protection system - Google Patents
Highly integrated optical network double protection system Download PDFInfo
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- CN211981872U CN211981872U CN202021159177.3U CN202021159177U CN211981872U CN 211981872 U CN211981872 U CN 211981872U CN 202021159177 U CN202021159177 U CN 202021159177U CN 211981872 U CN211981872 U CN 211981872U
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Abstract
The utility model relates to a high integrated optical network duplicate protection system, directly transfer transmitter, first EY fiber amplifier, second EY fiber amplifier, 2 including first light: n shunt, 1: the optical fiber amplifier comprises an N splitter and a plurality of optical network units, wherein the input end of a first EY optical fiber amplifier and the input end of a second EY optical fiber amplifier are respectively connected with a first optical direct modulation transmitter and a second optical direct modulation transmitter. Adopted the utility model discloses a highly integrated optical network duplicate protection system, the CATV business double-circuit real-time protection of functional layer, automatic activestandby way switch when transmission line or equipment are unusual, guarantee the stable transmission of business. PON signal real-time monitoring, when the transmission line or equipment appears abnormal, the automatic main-standby switching, protect the stable transmission of the business. The CATV and the PON are detected simultaneously, the dual protection function of the optical network can be realized, the reliability of the network is greatly improved, and the service can be ensured not to be interrupted under the abnormal condition of the network.
Description
Technical Field
The utility model relates to a communication system field especially relates to the optical network system field, specifically indicates a highly integrated optical network duplicate protection system.
Background
A Passive Optical Network (PON) plays a key role in a communication system as an important component of a Fiber To The Home (FTTH) system. A conventional PON system adopts a link form as shown in fig. 1. Wherein: OLT (optical line terminal) sends 1490nm optical downstream to ONU (optical network unit). Meanwhile, the ONU (optical network unit) sends 1310nm light to the OLT in an uplink manner to provide internet access service for the user. The OTD (optical time alignment transmitter) sends 1550nmCATV signals to the ONU to provide TV services for users.
The scheme does not protect PON signals (1310nm/1490nm) and CATV signals. In practice any anomalies in the line will have an impact on the CATV service. The present patent proposes a dual protection scheme for optical network, which can perform dual protection for PON signals and CATV signals.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming of above-mentioned prior art, providing a satisfy stable height integration's optical network duplicate protection system high, with low costs, application scope comparatively extensively.
In order to achieve the above object, the highly integrated optical network dual protection system of the present invention is as follows:
the highly integrated optical network dual protection system is mainly characterized in that the system comprises a first optical direct modulation transmitter, a second optical direct modulation transmitter, a first EY optical fiber amplifier, a second EY optical fiber amplifier and 2: n shunt, 1: n splitter and a plurality of optical network units,
the input end of the first EY optical fiber amplifier and the input end of the second EY optical fiber amplifier are respectively connected with the first optical direct modulation transmitter and the second optical direct modulation transmitter, and the output end of the first EY optical fiber amplifier and the output end of the second EY optical fiber amplifier are respectively connected with the following components: the input ends of the N shunts are connected, and the ratio of 2: the output end of the N shunt is connected with the input end of the 1: the input ends of the N shunts are connected, and the ratio of 1: the output end of the N branching unit is connected with a plurality of optical network units, and the optical network units are connected with corresponding terminal users.
Preferably, the system further includes a first optical line terminal and a second optical line terminal, an input end of the first optical line terminal is connected to the first EY optical fiber amplifier, and an input end of the second optical line terminal is connected to the second EY optical fiber amplifier.
Preferably, first EY fiber amplifier and second EY fiber amplifier all contain the same structure, including input light branching unit, amplifier module, output light branching unit, wavelength division multiplexer, input light detecting element, output light detecting element, microprocessor and sharing management unit, input light branching unit, amplifier module, output light branching unit and wavelength division multiplexer connect gradually, input light branching unit and output light branching unit be connected with input light detecting element and output light detecting element respectively, microprocessor all be connected with input light detecting element and output light detecting element, sharing management unit be connected with microprocessor.
Adopted the utility model discloses a highly integrated optical network duplicate protection system, the CATV business double-circuit real-time protection of functional layer, automatic activestandby way switch when transmission line or equipment are unusual, guarantee the stable transmission of business. PON signal real-time monitoring, when the transmission line or equipment appears abnormal, the automatic main-standby switching, protect the stable transmission of the business. The CATV and the PON are detected simultaneously, the dual protection function of the optical network can be realized, the reliability of the network is greatly improved, and the service can be ensured not to be interrupted under the abnormal condition of the network. And the later maintenance layer is simultaneously detected through the OLT and the EYDFA, so that the self-detection of the transmission equipment can be realized, the determination of the abnormal reason of the line is facilitated, and the problem troubleshooting and repairing are facilitated. EYDFA input and output are judged, abnormity can be distinguished to be line side abnormity or the internal problem of EYDFA equipment, the problem can be quickly positioned, the labor cost is effectively reduced, and the later maintenance cost of the equipment is saved.
Drawings
Fig. 1 is a structural diagram of a highly integrated optical network double protection system according to the present invention.
Fig. 2 is a structural diagram of an EY fiber amplifier of the highly integrated optical network dual protection system according to the present invention.
Fig. 3 is a schematic diagram of the OLT detecting unit of the highly integrated optical network dual protection system according to the present invention.
Detailed Description
In order to more clearly describe the technical content of the present invention, the following further description is given with reference to specific embodiments.
The utility model discloses an optical network duplicate protection system that this height integrated integrates, including first light directly transfers transmitter, second light directly transfers transmitter, first EY fiber amplifier, second EY fiber amplifier, 2: n shunt, 1: n splitter and a plurality of optical network units,
the input end of the first EY optical fiber amplifier and the input end of the second EY optical fiber amplifier are respectively connected with the first optical direct modulation transmitter and the second optical direct modulation transmitter, and the output end of the first EY optical fiber amplifier and the output end of the second EY optical fiber amplifier are respectively connected with the following components: the input ends of the N shunts are connected, and the ratio of 2: the output end of the N shunt is connected with the input end of the 1: the input ends of the N shunts are connected, and the ratio of 1: the output end of the N branching unit is connected with a plurality of optical network units, and the optical network units are connected with corresponding terminal users.
As a preferred embodiment of the present invention, the system further includes a first optical line terminal and a second optical line terminal, the input end of the first optical line terminal is connected to the first EY optical fiber amplifier, and the input end of the second optical line terminal is connected to the second EY optical fiber amplifier.
As the utility model discloses a preferred embodiment, first EY fiber amplifier and second EY fiber amplifier all contain the same structure, including input light branching unit, amplifier module, output light branching unit, wavelength division multiplexer, input light detecting element, output light detecting element, microprocessor and sharing administrative unit, input light branching unit, amplifier module, output light branching unit and wavelength division multiplexer connect gradually, input light branching unit and output light branching unit be connected with input light detecting element and output light detecting element respectively, microprocessor all be connected with input light detecting element and output light detecting element, sharing administrative unit be connected with microprocessor.
The present invention provides a method, system and device for protecting a passive optical network, which can protect the optical network doubly, thereby improving the reliability of the communication system and the maintenance convenience.
The structure of a dual protection system of a passive optical network is shown in fig. 1, where OTD refers to an optical direct modulation transmitter, OLT refers to an optical line terminal, ONU refers to an optical network unit, and EYDFA refers to an EY fiber amplifier.
CATV signal light emitted by OTD is amplified by EYDFA, and then is amplified by a 2: the N splitters enter the transmission fiber. Next, the signal light is transmitted through 1: the N splitter transmits to the ONU. Finally, the signal light is transmitted to each end user.
The ONU end sends out 1310nm optical signals, the optical signals enter the transmission optical fiber through the 1 x N splitter, and then the optical signals are finally transmitted back to the OLT through the 2 x N splitter and the EYDFA; the OLT end sends out 1490nm optical signals, the optical signals enter the transmission optical fiber through the 2 x N splitter, and then the optical signals are finally transmitted back to the OLT after passing through the 1 x N splitter and the EYDFA.
When the main path starts to work, the EYDFA1 respectively detects input and output signal light, and when the input or output light of the main path is abnormal, the main path is automatically switched to EYDFA2 through the central processing unit to realize the line protection function.
The OLT1 works in the initial stage, and when the input and output of the main circuit are abnormal, the circuit is automatically switched to the OLT2 to realize the circuit protection function.
The CATV signal and PON signal protection function works simultaneously, so the scheme is an optical network dual protection scheme and can ensure the stability of CATV and PON transmission networks simultaneously.
The EYDFA hardware structure is shown in FIG. 2, which comprises:
an input optical splitter: splitting input signal light, wherein one part is used for power detection, and the other part enters an amplifying module to realize light amplification;
outputting an optical splitter: splitting the output signal light, wherein one part is used for power detection, and the other part is directly output;
an amplification module: amplifying the signal light;
a wavelength division multiplexer: combining and splitting PON and CATV service light;
an input light detection unit: detecting input optical power;
an output light detection unit: detecting the output optical power;
the microprocessor: sampling and processing input and output optical power;
EYDFA1/EYDFA2 share a management unit: and managing the working state of the EYDFA equipment.
The EYDFA protection function control logic is as follows:
the input/output optical detection unit monitors input optical power in real time, and when the input/output optical power exceeds a working threshold, the shared management unit starts self-checking on EYDFA2.
If the EYDFA2 is normal by self-checking, the management unit closes the EYDFA1 and switches the line to EYDFA2. If the EYDFA2 is abnormal in self-detection, the management is switched to the equipment with the better state.
The EYDFA abnormal positioning function control logic is as follows:
input PIN exception: please check the input fiber or OTD;
input PIN normal & output PIN abnormal: please check the amplifier.
The OLT detection unit is shown in fig. 3.
The OLT protection function control logic is as follows:
the input/output detection unit monitors the input optical power in real time, and when the input/output optical power exceeds the working threshold, the shared management unit will initiate self-test on 0LT 2.
If the OLT2 is self-tested normally, the management unit turns off OLT1 and switches the line to OLT2. If the self-test of the OLT2 is abnormal, the management will switch to the device with the better status.
The OLT abnormal positioning function control logic is as follows:
input exception: please check the input fiber or ONU;
input normal & output abnormal: and carrying out OLT self-inspection.
In practical application, the invention realizes double protection by simultaneously detecting CATV and PON signals through each detection unit.
Adopted the utility model discloses a highly integrated optical network duplicate protection system, the CATV business double-circuit real-time protection of functional layer, automatic activestandby way switch when transmission line or equipment are unusual, guarantee the stable transmission of business. PON signal real-time monitoring, when the transmission line or equipment appears abnormal, the automatic main-standby switching, protect the stable transmission of the business. The CATV and the PON are detected simultaneously, the dual protection function of the optical network can be realized, the reliability of the network is greatly improved, and the service can be ensured not to be interrupted under the abnormal condition of the network. And the later maintenance layer is simultaneously detected through the OLT and the EYDFA, so that the self-detection of the transmission equipment can be realized, the determination of the abnormal reason of the line is facilitated, and the problem troubleshooting and repairing are facilitated. EYDFA input and output are judged, abnormity can be distinguished to be line side abnormity or the internal problem of EYDFA equipment, the problem can be quickly positioned, the labor cost is effectively reduced, and the later maintenance cost of the equipment is saved.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (3)
1. The utility model provides a high integrated optical network duplicate protection system which characterized in that, the system include first optical directly modulate transmitter, second optical directly modulate transmitter, first EY fiber amplifier, second EY fiber amplifier, 2: n shunt, 1: n splitter and a plurality of optical network units,
the input end of the first EY optical fiber amplifier and the input end of the second EY optical fiber amplifier are respectively connected with the first optical direct modulation transmitter and the second optical direct modulation transmitter, and the output end of the first EY optical fiber amplifier and the output end of the second EY optical fiber amplifier are respectively connected with the following components: the input ends of the N shunts are connected, and the ratio of 2: the output end of the N shunt is connected with the input end of the 1: the input ends of the N shunts are connected, and the ratio of 1: the output end of the N branching unit is connected with a plurality of optical network units, and the optical network units are connected with corresponding terminal users.
2. The system of claim 1, further comprising a first optical line terminal and a second optical line terminal, wherein an input of the first optical line terminal is connected to the first EY fiber amplifier, and an input of the second optical line terminal is connected to the second EY fiber amplifier.
3. The highly integrated optical network dual protection system according to claim 1, wherein the first EY optical fiber amplifier and the second EY optical fiber amplifier have the same structure, and include an input optical splitter, an amplification module, an output optical splitter, a wavelength division multiplexer, an input optical detection unit, an output optical detection unit, a microprocessor, and a sharing management unit, the input optical splitter, the amplification module, the output optical splitter, and the wavelength division multiplexer are sequentially connected, the input optical splitter and the output optical splitter are respectively connected to the input optical detection unit and the output optical detection unit, the microprocessor is connected to the input optical detection unit and the output optical detection unit, and the sharing management unit is connected to the microprocessor.
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| CN202021159177.3U CN211981872U (en) | 2020-06-19 | 2020-06-19 | Highly integrated optical network double protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583474A (en) * | 2020-12-25 | 2021-03-30 | 中国电子科技集团公司第三十四研究所 | Optical network multi-path fast switching system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583474A (en) * | 2020-12-25 | 2021-03-30 | 中国电子科技集团公司第三十四研究所 | Optical network multi-path fast switching system and method |
| CN112583474B (en) * | 2020-12-25 | 2024-05-28 | 中国电子科技集团公司第三十四研究所 | Multi-path rapid switching system and method for optical network |
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