CN117118503A - Optical transmission system and eye protection method - Google Patents
Optical transmission system and eye protection method Download PDFInfo
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- CN117118503A CN117118503A CN202311079311.7A CN202311079311A CN117118503A CN 117118503 A CN117118503 A CN 117118503A CN 202311079311 A CN202311079311 A CN 202311079311A CN 117118503 A CN117118503 A CN 117118503A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 417
- 230000005540 biological transmission Effects 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000013307 optical fiber Substances 0.000 claims abstract description 208
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 32
- 230000003321 amplification Effects 0.000 claims description 28
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 28
- 230000006854 communication Effects 0.000 description 17
- 238000004891 communication Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 230000008439 repair process Effects 0.000 description 9
- 230000001965 increasing effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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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
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
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Abstract
The present disclosure provides an optical transmission system and an eye protection method, the system comprising: an optical fiber transmission line comprising: a first optical fiber line and a second optical fiber line; the first optical amplifying unit is used for amplifying a first optical signal of a first wave band transmitted by the first optical fiber line; the second optical amplifying unit is connected with the first optical amplifying unit through a second optical fiber line and is used for amplifying second optical signals of a second wave band transmitted by the first optical fiber line and the second optical fiber line; the OSC module is used for monitoring the fracture condition of the first optical fiber circuit and monitoring the APR working state of the first optical amplifying unit based on the fracture condition of the first optical fiber circuit; and the control module is connected with the first optical amplifying unit and the second optical amplifying unit and is used for determining the fracture condition of the second optical fiber circuit and controlling the working state of the second optical amplifying unit based on the fracture condition of the second optical fiber circuit.
Description
Technical Field
The present disclosure relates to the field of optical communications technologies, and in particular, to an optical transmission system and an eye protection method.
Background
In a long-distance optical fiber transmission system, when the optical power of an optical fiber communication line reaches an upper limit, the optical power in the system can be harmful to human eyes, for example, the optical power in the system is large, once an optical fiber is accidentally broken or a connector is pulled out, the leaked light can directly harm the human eyes, so that the equipment needs to start an optical power automatic reduction technology (Automatic Power Reduction, APR), and the optical power in the optical fiber transmission line is reduced to a safe range, thereby playing an eye protection role.
An optical supervisory channel (Optical Supervisory Channel, OSC) is typically required in an APR implementation to monitor fiber breaks or connector pullout. The occurrence of the outage event can be perceived through the no-light detection function of the OSC, and simultaneously, the contralateral unit is informed to reduce the emitted light power through the remote fault alarm mechanism, so that the eye protection function is achieved.
When optical signals of two wave bands in the related art are coupled to a shared line optical fiber, two optical monitoring channels are needed to control the APR working states of the corresponding wave bands, which increases the complexity of the system and is not beneficial to saving development workload.
Disclosure of Invention
Accordingly, a primary object of the present disclosure is to provide an optical transmission system and an eye protection method.
In a first aspect, embodiments of the present disclosure provide an optical transmission system, comprising:
a first optical fiber line and a second optical fiber line;
the first optical amplifying units are respectively arranged at two ends of the first optical fiber line and are used for amplifying first optical signals of a first wave band transmitted by the first optical fiber line;
the second optical amplifying unit is connected with the first optical amplifying unit through the second optical fiber line and is used for amplifying second optical signals of a second wave band transmitted by the first optical fiber line and the second optical fiber line;
the optical monitoring channel OSC module is arranged in the first optical amplifying unit and is used for monitoring the fracture condition of the first optical fiber circuit and monitoring the APR working state of the first optical amplifying unit based on the fracture condition of the first optical fiber circuit;
and the control module is connected with the first optical amplifying unit and the second optical amplifying unit and is used for determining the fracture condition of the second optical fiber circuit and controlling the working state of the second optical amplifying unit based on the fracture condition of the second optical fiber circuit.
Optionally, an optical power detection unit is disposed in the first optical amplification unit, and is configured to detect optical power of the second optical signal input to the first optical amplification unit;
and the control module is connected with the optical power detection unit and used for determining the fracture condition of the second optical fiber line based on the detection result of the optical power detection unit.
Optionally, the first optical amplifying unit and the second optical amplifying unit each include: a pre-amplifier and a power amplifier;
the control module is connected with the preamplifiers in the first optical amplifying unit and the second optical amplifying unit and is used for determining whether the optical fiber transmission line is broken or not; and the control module is connected with the power amplifier in the second optical amplifying unit and used for controlling the output power of the power amplifier in the second optical amplifying unit. In a second aspect, embodiments of the present disclosure provide an eye protection method, the method comprising:
when the optical fiber transmission line is broken, determining the breaking position of the optical fiber transmission line;
based on the breaking position of the optical fiber transmission line, the working state of the second optical amplifying unit is controlled by the control module; different breaking positions and different working states of the second optical amplifying unit.
Optionally, the determining the fracture position of the optical fiber transmission line includes:
if the first optical amplifying unit is detected to be in an APR activated state, determining that at least the first optical fiber line is broken;
based on the fracture position of the optical fiber transmission line, the control module is used for controlling the working state of the second optical amplifying unit, and the method comprises the following steps:
and turning off the second optical amplifying unit by using the control module.
Optionally, the method further comprises:
when the first optical amplifying unit is detected to be switched from the APR active state to the APR inactive state, the control module is utilized to start the second optical amplifying unit, and a power amplifier in the second optical amplifying unit is controlled to output a second optical signal of a second wave band with the first power.
Optionally, the determining the fracture position of the optical fiber transmission line includes:
if the first optical amplifying unit and the second optical amplifying unit are detected to be in an APR inactive state and the optical power detecting unit cannot detect an optical signal, determining that a second optical fiber line is broken;
based on the fracture position of the optical fiber transmission line, the control module is used for controlling the working state of the second optical amplifying unit, and the method comprises the following steps:
and controlling a power amplifier in the second optical amplifying unit to output a second optical signal of a second wave band by the first power by using the control module.
Optionally, the method further comprises:
when the optical power detection unit detects an optical signal, the control module is used for controlling a power amplifier in the second optical amplification unit to output a second optical signal of a second wave band with second power; the second power is greater than the first power.
Optionally, the first optical amplifying unit is in an APR activated state, including:
a power amplifier in the first optical amplifying unit outputs a first optical signal of a first band at a third power.
Optionally, the first optical amplifying unit switches from an APR activated state to an APR deactivated state, including:
a power amplifier in the first optical amplifying unit outputs a first optical signal of a first band at a fourth power; the fourth power is greater than the third power.
The optical transmission system in the embodiment of the disclosure includes an optical fiber transmission line, a first optical amplifying unit, and a second optical amplifying unit, where the optical fiber transmission line includes: the optical fiber monitoring system comprises a first optical fiber circuit, a second optical fiber circuit, an optical monitoring channel OSC module, a first optical amplification unit, a second optical fiber circuit, a control module and a control module, wherein the first optical fiber circuit and the second optical fiber circuit are monitored by the optical monitoring channel OSC module, the APR working state of the first optical amplification unit is monitored based on the fracture condition of the first optical fiber circuit, the fracture condition of the second optical fiber circuit is determined by the control module, and the working state of the second optical amplification unit is controlled based on the fracture condition of the second optical fiber circuit; the optical transmission system only needs one optical monitoring channel OSC module to monitor the breakage and reliable recovery of the first optical fiber line, and then based on the assistance of the control module, the breakage and reliable recovery of the second optical fiber line are realized, so that the complexity of the system is reduced, and the development workload is saved.
Drawings
Fig. 1 is a schematic diagram of an optical transmission system according to an exemplary embodiment;
FIG. 2 is a flow diagram illustrating a method of eye protection according to an exemplary embodiment;
FIG. 3 is a second flow chart illustrating a method of eye protection according to an exemplary embodiment;
FIG. 4 is a flowchart diagram III illustrating a method of eye protection according to an exemplary embodiment;
FIG. 5 is a flow diagram fourth illustrating a method of eye protection according to an exemplary embodiment;
FIG. 6 is a flow diagram five illustrating a method of eye protection according to an example embodiment;
fig. 7 is a schematic diagram of a second configuration of an optical transmission system according to an exemplary embodiment.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the specific technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings in the embodiments of the present disclosure. The following examples are illustrative of the present disclosure, but are not intended to limit the scope of the present disclosure.
An embodiment of the present disclosure provides an optical transmission system, as shown in fig. 1, and fig. 1 is a schematic structural diagram of the optical transmission system according to an exemplary embodiment. The system 10 includes:
an optical fiber transmission line 100 comprising: a first optical fiber line 101 and a second optical fiber line 102;
the first optical amplifying units 200 are respectively disposed at two ends of the first optical fiber line 101, and are used for amplifying the first optical signal of the first band transmitted by the first optical fiber line;
a second optical amplifying unit 300 connected to the first optical amplifying unit 200 through the second optical fiber line 102, for amplifying a second optical signal of a second wavelength band transmitted by the first optical fiber line 101 and the second optical fiber line 102;
an optical supervisory channel OSC module, disposed in the first optical amplifying unit 200, configured to monitor a fracture condition of the first optical fiber line 101, and monitor an APR working state of the first optical amplifying unit based on the fracture condition of the first optical fiber line 101;
and the control module is connected with the first optical amplifying unit 200 and the second optical amplifying unit 300, and is configured to determine a breaking condition of the second optical fiber line 102, and control an operating state of the second optical amplifying unit based on the breaking condition of the second optical fiber line 102.
The optical amplifying unit is a product capable of amplifying an optical signal in an optical fiber communication system, and is configured to amplify the optical signal by converting energy of pump light into energy of signal light by stimulated radiation of laser light.
There are two different optical signals in the optical transmission system of the present disclosure, namely a first optical signal in a first band and a second optical signal in a second band.
The first optical amplifying unit is used for amplifying a first optical signal of a first wave band. In the embodiment of the disclosure, the first optical amplifying units are respectively disposed at two ends of the first optical fiber line, and it can be understood that the first optical amplifying units amplify the first optical signal of the first wavelength band transmitted by the first optical fiber line.
The second optical amplifying unit is used for amplifying a second optical signal of a second wave band. In the embodiment of the disclosure, the second optical amplifying unit is connected with the first optical amplifying unit through a second optical fiber line, and a second optical signal of a second wave band amplified by the second optical amplifying unit is transmitted into the first optical amplifying unit through the second optical fiber line and is coupled with a first optical signal of a first wave band amplified by the first optical amplifying unit, and the coupled optical signal is transmitted through the first optical fiber line.
It should be noted that, the OSC module of the optical supervisory channel is mainly used for monitoring the transmission condition of each channel in the optical fiber transmission system, and inserts the optical supervisory signal generated by the node into the transmitting end to output the optical supervisory signal and the optical signal of the main channel in a combined way; at the receiving end, the optical supervisory signals are separated from the received optical signals. When the optical fiber breaks, an abnormality occurs in the transmission of the optical signal. The optical signal transmission condition of the optical fiber transmission line is monitored through the optical monitoring signal, so that the fracture condition of the optical fiber transmission line can be timely judged, and the reliability and the stability of optical fiber communication are improved.
The optical supervisory channel OSC module may be disposed in the first optical amplifying unit, and it may be understood that the optical supervisory signal of the optical supervisory channel OSC module may determine that the first optical fiber line has a break when it detects that the transmission of the first optical signal of the first wavelength band on the first optical fiber line is abnormal, thereby ensuring repair of the first optical fiber line in time and ensuring normal communication of the first optical fiber line.
When the optical monitoring channel OSC module judges that the first optical fiber circuit is broken, the single-disk CPU of the first wave band controls the first optical amplifying unit to be in an APR activated state, so that the optical power of a first optical signal of the first wave band is reduced, and eyes and skin of optical fiber circuit rush-repair personnel are protected conveniently. After the first optical fiber circuit is repaired, the single-disk CPU of the first wave band can control the first optical amplifying unit to be in an APR inactive state, so that the optical power of a first optical signal of the first wave band is increased, and the normal communication of the optical transmission system can be recovered in time.
The control module is a CPU for managing and controlling various information of the single disk and transmitting and processing, and is used for monitoring the APR working states of the first optical amplifying unit and the second optical amplifying unit in the optical transmission system and the on-off state of the optical fiber transmission line.
It should be explained that the single-disk CPU in the first band is used for controlling a plurality of optical devices in the single-disk in the first band, for example, for controlling the APR working state of the first optical amplifying unit, and the control module can establish communication connection with all the single-disk CPUs in the same chassis and control the single-disk CPUs.
The control module is in communication connection with the optical monitoring channel OSC module of the first optical amplifying unit, monitors the APR working state of the first optical amplifying unit by using the optical monitoring channel OSC module, and determines the fracture condition of the first optical fiber line according to the APR working state of the first optical amplifying unit so as to control the working state of the second optical amplifying unit, reduce the fracture position of the second optical signal of the high-power second wave band transmitted to the first optical fiber line, and cause injury to the optical fiber line repair personnel.
In addition, when the control module monitors that the second optical signal of the second wave band is not transmitted in the first optical fiber line, the control module can determine that the second optical fiber line for transmitting the second optical signal of the second wave band is broken.
The control module controls the working state of the second optical amplifying unit based on the breaking condition of the second optical fiber line, and it can be understood that when the breaking condition of the second optical fiber line is determined, the control module controls the power amplifier in the second optical amplifying unit to output a second optical signal of a second wave band with the first power; after determining that the second optical fiber circuit is repaired, the control module controls the power amplifier in the second optical amplifying unit to output a second optical signal of a second wave band with second power; the second power is greater than the first power.
In the optical transmission system according to the embodiment of the disclosure, the first optical fiber transmission line is monitored by the optical supervisory channel OSC module, and the second optical fiber transmission line is monitored by the control module, so that only the communication problem between the first optical amplifying unit and the optical supervisory channel OSC module and the single-disk CPU is considered, which is beneficial to reducing the complexity of the optical fiber transmission system.
The optical transmission system in the embodiment of the disclosure includes an optical fiber transmission line, a first optical amplifying unit, and a second optical amplifying unit, where the optical fiber transmission line includes: the optical fiber monitoring system comprises a first optical fiber circuit, a second optical fiber circuit, an optical monitoring channel OSC module, a first optical amplification unit, a second optical fiber circuit, a control module and a control module, wherein the first optical fiber circuit and the second optical fiber circuit are monitored by the optical monitoring channel OSC module, the APR working state of the first optical amplification unit is monitored based on the fracture condition of the first optical fiber circuit, the fracture condition of the second optical fiber circuit is determined by the control module, and the working state of the second optical amplification unit is controlled based on the fracture condition of the second optical fiber circuit; the optical transmission system only needs one optical monitoring channel OSC module to monitor the breakage and reliable recovery of the first optical fiber line, and then based on the assistance of the control module, the breakage and reliable recovery of the second optical fiber line are realized, so that the complexity of the system is reduced, and the development workload is saved.
Optionally, an optical power detection unit is disposed in the first optical amplification unit, and is configured to detect optical power of the second optical signal input to the first optical amplification unit;
and the control module is connected with the optical power detection unit and used for determining the fracture condition of the second optical fiber line based on the detection result of the optical power detection unit.
It should be noted that the optical power detection unit (Photoeletric Detector, PD) may convert an optical signal into an electrical signal in the communication system based on the photovoltaic effect of the semiconductor material.
The control module is connected with the optical power detection unit, and it can be understood that the control module can obtain a detection result of the optical power detection unit for detecting the optical power of the second optical signal input to the first optical amplification unit.
Based on the detection result, determining the breaking condition of the second optical fiber line, wherein when the optical power detection unit detects the optical power of the second optical signal input to the first optical amplification unit, the control module judges that the second optical fiber line is in a normal transmission state; when the optical power detection unit does not detect the optical power of the second optical signal input to the first optical amplification unit, the control module judges that the second optical fiber line is in a broken state.
Here, the breaking position of the optical fiber transmission line is determined according to the optical power of the second optical signal input to the first optical amplifying unit detected by the optical power detector, so that the accuracy of fault location of the optical fiber line can be effectively improved.
According to the embodiment of the disclosure, the optical power detection unit is arranged in the first optical amplification unit and is used for detecting the optical power of the second optical signal input to the first optical amplification unit, and meanwhile, the control module is connected with the optical power detection unit, so that the control module can determine the fracture condition of the second optical fiber line based on the detection result of the optical power detection unit, and the accuracy of the control module in controlling the state of the second optical amplification unit is improved.
Optionally, the first optical amplifying unit and the second optical amplifying unit each include: a pre-amplifier and a power amplifier;
the control module is connected with the preamplifiers in the first optical amplifying unit and the second optical amplifying unit and is used for determining whether the optical fiber transmission line is broken or not;
and the control module is connected with the power amplifier in the second optical amplifying unit and used for controlling the output power of the power amplifier in the second optical amplifying unit.
In the optical fiber transmission line, each of the optical amplifying units includes a Pre-Amplifier (PA) and a power optical Amplifier (Booster Amplifier, BA), and each of the amplifying units PA is connected to an adjacent amplifying unit BA by optical fiber communication.
The pre-amplifier PA has the main task of amplifying the signal by enhancing the input resulting signal to make it more suitable for subsequent circuit processing. It is typically composed of several levels of amplifiers, each level including a transistor or valve amplifier and its associated capacitive, inductive and resistive elements.
The function of the preamplifier mainly comprises: the signal of the input end is increased to meet the requirement of a later-stage circuit, so that the normal operation of the whole circuit is maintained; the signal-to-noise ratio is improved, the influence of thermal noise is reduced, and the signal of the output end is clearer and more reliable; the influence of external interference signals is restrained, so that the stability and anti-interference performance of the whole system are improved.
The functions of the power amplifier BA mainly include: the level of the input signal is amplified to achieve larger output power, so that the transmission distance of the signal is increased, the signal-to-noise ratio of the signal is enhanced, and the quality of the signal is improved.
The control module is connected with the preamplifiers in the first optical amplifying unit and the second optical amplifying unit, and it can be understood that the control module can monitor the working states of the two preamplifiers. It should be noted that, the optical supervisory channel OSC module does not exist in the second optical amplifying unit, if the second optical fiber line breaks, the output power of the second optical amplifying unit will not be automatically reduced, so the control module needs to establish a communication relationship with the power amplifier of the second optical amplifying unit, and when the second optical fiber line breaks, the control module controls the second optical amplifying unit to enter the eye protection process in time.
In the embodiment of the disclosure, the control module is connected with the preamplifier of the first optical amplifying unit and the preamplifier of the second optical amplifying unit, and can determine whether a fracture exists in the optical fiber transmission line; meanwhile, the control module is connected with the power amplifier of the second optical amplifying unit so as to control the output power of the power amplifier in the second optical amplifying unit, so that when the second optical fiber line breaks or repair is completed, the control module can reduce or increase the output power of the power amplifier in the second optical amplifying unit, and the fracture recovery process and the normal communication process of the second optical fiber line are ensured.
The embodiment of the present disclosure further provides an eye protection method, and fig. 2 is a schematic flow diagram of an eye protection method according to an exemplary embodiment, as shown in fig. 2; the method comprises the following steps:
in the step S1, when an optical fiber transmission line is broken, determining the breaking position of the optical fiber transmission line;
in step S2, based on the breaking position of the optical fiber transmission line, the working state of the second optical amplifying unit is controlled by using the control module; different breaking positions and different working states of the second optical amplifying unit.
The eye protection method according to the embodiments of the present disclosure is applied to one or more optical transmission systems described above. It should be noted that, to protect the safety of the emergency repair personnel of the optical fiber line, the high-power optical output device is generally required to have the capability of automatically monitoring the damage of the transmission line and automatically reducing or turning off the output optical signal, so as to protect the eyes of the personnel who may contact the leaked optical signal; meanwhile, in order to ensure that the normal communication of the optical transmission system is quickly restored, high-power optical output equipment is also required to be capable of automatically restoring the normal communication after the optical fiber transmission line is restored.
Here, there are breaks in the optical fiber transmission line, there are the following cases: the first optical fiber line breaks, the second optical fiber line breaks, or both the first optical fiber line and the second optical fiber line break.
Because only one OSC module is configured in the optical transmission system, the OSC module is utilized to monitor the fracture condition of the first optical fiber line; determining a breaking position of the optical fiber transmission line based on a breaking condition of the first optical fiber line; therefore, the working state of the second optical amplifying unit is controlled by the control module based on the breaking position of the optical fiber transmission line.
Here, the control module may control the power value of the power amplifier output in the second optical amplifying unit when the breaking position is determined.
In the embodiment of the disclosure, after determining that the optical fiber line is broken, monitoring the APR working state of the first optical amplifying unit based on the OSC module of the optical monitoring channel, and determining the breaking position in the optical fiber line according to the APR working state of the first optical amplifying unit. When the optical monitoring channel OSC module monitors that the first optical amplifying unit is in an APR activated state, determining that at least the first optical fiber line is in a broken state; when the optical supervisory channel OSC module monitors that the first optical amplifying unit is in an APR inactive state, it is determined that the first optical fiber line is in a normal transmission state, and the breaking position of the optical fiber line is located on the second optical fiber line.
In the embodiment of the disclosure, when the optical fiber transmission line breaks, determining the breaking position of the optical fiber transmission line, and based on the breaking position of the optical fiber transmission line, controlling the working state of the second optical amplifying unit by using the control module, wherein the working states of the second optical amplifying unit are different at different breaking positions; compared with the configuration of the optical supervisory signal OSC module in the second optical amplifying unit, the optical supervisory channel OSC module is utilized to control the APR activation state of the second optical amplifying unit.
Optionally, fig. 3 is a second flow chart of an eye protection method according to an exemplary embodiment, as shown in fig. 3; the determining the breaking position of the optical fiber transmission line includes:
in step S11, if the first optical amplifying unit is detected to be in the APR activated state, determining that at least the first optical fiber line has a break;
based on the fracture position of the optical fiber transmission line, the control module is used for controlling the working state of the second optical amplifying unit, and the method comprises the following steps:
in step S21, the control module is used to turn off the second optical amplifying unit.
In the embodiment of the disclosure, the control module may detect an APR operating state of the first optical amplifying unit, so as to determine whether a break exists in the first optical fiber line based on the APR operating state of the first optical amplifying unit.
It should be noted that, since the OSC module is configured in the first optical amplifying unit, the OSC module may monitor the switching of the first optical amplifying unit from the APR inactive state to the APR active state when detecting that the first optical fiber line is broken.
Thus, upon detecting that the first optical amplifying unit is in an APR activated state, it can be determined that there is a break in at least the first optical fiber line.
It should be noted that, based on the first optical amplifying unit being in the APR activated state, it cannot be determined whether the second optical fiber line is in the broken state. In order to ensure the safety of maintenance personnel, when the first optical fiber line breaks, the control module needs to turn off the second optical amplifying unit so as to ensure that only the first optical signal of the first wave band is transmitted in the optical fiber transmission line.
It is noted that when the first optical amplifying unit is in the APR activated state, the optical power of the optical signal of the first band is reduced to the eye protection power, at this time, if the second optical fiber line is not broken, and the control module directly controls the optical power of the optical signal of the second band to be reduced to the eye protection power, the optical power of the optical signal output at the broken position of the first optical fiber line is equal to the superposition power of the two eye protection powers, and the intensity of the superposition power of the two eye protection powers is easy to damage eyes and skin of maintenance personnel. Therefore, when the first optical fiber circuit breaks, the control module needs to turn off the second optical amplifying unit.
In the embodiment of the disclosure, when the first optical amplifying unit is detected to be in the APR activated state, it is determined that at least the first optical fiber line is broken, and the control module is utilized to turn off the second optical amplifying unit, so that only the first optical signal transmission of the first wave band exists in the first optical fiber line, and the OSC module of the first optical fiber line is facilitated to judge the repair state of the first optical fiber line, thereby improving the accuracy of judging the state of the optical fiber transmission line.
Alternatively, fig. 4 is a flow chart three of an eye protection method, as shown in fig. 4, according to an exemplary embodiment; the method further comprises the steps of:
in step S31, when it is detected that the first optical amplifying unit is switched from the APR active state to the APR inactive state, the control module is used to turn on the second optical amplifying unit, and control the power amplifier in the second optical amplifying unit to output the second optical signal of the second band with the first power.
It can be understood that when the control module detects that the first optical amplifying unit is switched from the APR active state to the APR inactive state, it can be determined that the first optical fiber line has completed repairing, and the optical power of the optical signal in the first band has been recovered from the eye protection power to the optical power of the normal operation.
It should be noted that after the first optical fiber line is determined to be repaired, whether the second optical fiber line is broken cannot be accurately determined, and if the optical power of the second band which is turned off is directly increased to the power of normal operation, the situation that the human eyes or the skin is damaged by high power may occur.
Here, the first power is eye protection power for protecting eyes and skin of a serviceman.
Therefore, in the embodiment of the disclosure, after determining that the first optical fiber line is in a normal working state, the control module may restart the turned-off second optical amplifying unit, and set the optical power of the second optical signal in the second band as the eye protection power.
According to the embodiment of the disclosure, the first optical amplification unit is detected to be switched from the APR active state to the APR inactive state through the control module, and the first optical fiber circuit is determined to be repaired; the control module starts the second optical amplifying unit and sets the optical power of the second optical signal of the second wave band as eye protection power, so that the situation that the human eyes are damaged when the optical power of the second wave band is directly increased to the power of normal work when the second optical fiber line is broken can be avoided, and the safety of the optical fiber transmission line is improved.
Alternatively, fig. 5 is a flow chart four of an eye protection method, as shown in fig. 5, according to an exemplary embodiment; the determining the breaking position of the optical fiber transmission line includes:
in step S12, if it is detected that both the first optical amplifying unit and the second optical amplifying unit are in an APR inactive state, and the optical power detecting unit cannot detect an optical signal, it is determined that the second optical fiber line is broken;
based on the fracture position of the optical fiber transmission line, the control module is used for controlling the working state of the second optical amplifying unit, and the method comprises the following steps:
in step S22, the control module is used to control the power amplifier in the second optical amplifying unit to output the second optical signal in the second band with the first power.
It should be noted that, when the control module detects that the first optical amplifying unit and the second optical amplifying unit are both in the APR inactive state, it can determine that the first optical fiber line is in the normal transmission state; the failure of the second fiber line can be determined by the absence of detection of the optical signal at the optical power detector.
It can be understood that, based on the breakage of the second optical fiber line, the control module controls the power amplifier in the second optical amplifying unit to output the second optical signal of the second wave band with the first power, so that the optical power of the optical signal of the second wave band is reduced to the eye protection power.
In the embodiment of the disclosure, when the first optical amplifying unit and the second optical amplifying unit are detected to be in the APR inactive state and the optical power detecting unit cannot detect the optical signal, the second optical fiber line is determined to be broken, and based on the breaking state of the second optical fiber line, the control module controls the power amplifier in the second optical amplifying unit to output the second optical signal of the second wave band with the first power, so that the safety in the repairing process of the second optical fiber line is ensured.
Optionally, fig. 6 is a flowchart five of an eye protection method, as shown in fig. 6, according to an exemplary embodiment, the method further includes:
in step S32, when the optical power detection unit detects an optical signal, the control module is used to control the power amplifier in the second optical amplification unit to output a second optical signal in a second band with a second power; the second power is greater than the first power.
It can be understood that when the optical power detection unit detects an optical signal, it can be determined that the second optical fiber circuit is repaired, and the control module controls the power amplifier in the second optical amplification unit to output a second optical signal of a second wave band with a second power; the second power is greater than the first power, thereby increasing the eye-protection power to a power of normal operation of the optical signal in the second band.
In the embodiment of the disclosure, when the optical power detection unit detects an optical signal, it is determined that the second optical fiber line is in a normal transmission state, and a power amplifier in the second optical amplification unit is controlled by the control module to output a second optical signal of a second wave band with a second power; the second power is larger than the first power, so that the optical power of the optical signal of the second wave band is recovered from the eye protection power to the normal working power, and the optical signal of the second wave band is in a normal transmission state after the repair of the second optical fiber line is completed.
Optionally, the first optical amplifying unit is in an APR activated state, including:
a power amplifier in the first optical amplifying unit outputs a first optical signal of a first band at a third power.
Optionally, the first optical amplifying unit switches from an APR activated state to an APR deactivated state, including:
a power amplifier in the first optical amplifying unit outputs a first optical signal of a first band at a fourth power; the fourth power is greater than the third power.
In the embodiment of the disclosure, the power value of the third power may be equal to or different from the power value of the first power, so long as the eye protection power is satisfied, and damage to human eyes and skin can be avoided.
It can be understood that when the first optical amplifying unit is in the APR activated state, the first optical fiber line is in the repair state, and in order to protect eyes and skin of an optical fiber line rush-repair person, a single-disk CPU of the first band is required to control a power amplifier in the first optical amplifying unit to output a first optical signal of the first band with a third power; when the first optical amplifying unit is in the APR inactive state, the first optical fiber line is in a normal state, and the normal communication state of the first optical fiber line needs to be recovered, so that the optical signal of the first wave band normally emits light, and therefore, a single-disk CPU of the first wave band is required to control a power amplifier in the first optical amplifying unit to output the first optical signal of the first wave band with fourth power larger than the third power.
In the embodiment of the disclosure, when the first optical amplifying unit is in an APR activated state, the power amplifier of the first optical amplifying unit outputs a first optical signal with a third power; when the first optical amplifying unit is switched from the APR active state to the APR inactive state, the power amplifier of the first optical amplifying unit outputs the first optical signal with fourth power which is larger than the third power, so that the fracture recovery process and the normal communication process of the first transmission line are ensured.
Illustratively, fig. 7 is a schematic diagram of a second optical transmission system, as shown in fig. 7, according to an exemplary embodiment; the C-band amplification system is in the same subrack as the L-band amplification system, but has a different single disk. And when the control module monitors that the optical amplifying unit of the C wave band is in an APR activated state, determining that at least the B part is broken.
Here, the control module turns off the output of the L-band optical amplifying unit; the C-band single-disk CPU reduces the output power of the C-band optical amplifying unit so as to protect eyes and skin of optical fiber line rush-repair personnel. After the fracture at the position B is repaired, the C-band single-disk CPU controls the C-band optical amplifying unit to be in an APR inactive state.
And when the control module detects that the optical amplifying unit of the C wave band is in an APR inactive state, determining that the repair of the position B is finished. Meanwhile, the control module also detects that the amplifying unit of the L wave band is in an APR inactive state, and then the output of the power amplifier BA of the optical amplifying unit of the L wave band is turned on, so that the output power of the power amplifier BA of the L wave band is increased to eye protection power.
If the optical power detection unit detects the eye protection power, the position A can be determined to be free of fracture, the output of the power amplifier BA in the L wave band is completely opened, and the output power of the power amplifier BA in the L wave band reaches the power of normal light emission in the L wave band.
And when the control module detects that the optical amplifying unit of the C wave band and the optical amplifying unit of the L wave band are in an APR inactive state, and the power amplifier BA of the optical amplifying unit of the L wave band has power output, but the optical power detecting unit does not detect the power, the A part is determined to be broken.
At this time, the control module controls the light amplifying unit of the L wave band to be in an APR activated state, and reduces the output power of the light amplifying unit of the L wave band to eye protection power so as to protect eyes and skin of the optical fiber line rush-repair personnel.
And when the optical power detection unit detects the eye protection power, determining that the repair at the position A is finished. The control module controls the light amplifying unit of the L wave band to be in an APR inactive state, and increases the output power of the light power amplifier BA of the L wave band, so that the output power of the light power amplifier BA of the L wave band reaches the power of normal light emission of the L wave band.
The optical transmission system and the eye protection method described in the examples are only examples of the embodiments of the present disclosure, but are not limited thereto, and the optical transmission system and the eye protection method are all within the scope of the present disclosure.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present disclosure, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation of the embodiments of the present disclosure. The foregoing embodiment numbers of the present disclosure are merely for description and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely an embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present disclosure, and should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. An optical transmission system, comprising:
an optical fiber transmission line comprising: a first optical fiber line and a second optical fiber line;
the first optical amplifying units are respectively arranged at two ends of the first optical fiber line and are used for amplifying first optical signals of a first wave band transmitted by the first optical fiber line;
the second optical amplifying unit is connected with the first optical amplifying unit through the second optical fiber line and is used for amplifying second optical signals of a second wave band transmitted by the first optical fiber line and the second optical fiber line;
the optical monitoring channel OSC module is arranged in the first optical amplifying unit and is used for monitoring the fracture condition of the first optical fiber circuit and monitoring the APR working state of the first optical amplifying unit based on the fracture condition of the first optical fiber circuit;
and the control module is connected with the first optical amplifying unit and the second optical amplifying unit and is used for determining the fracture condition of the second optical fiber circuit and controlling the working state of the second optical amplifying unit based on the fracture condition of the second optical fiber circuit.
2. The system of claim 1, wherein an optical power detection unit is disposed in the first optical amplification unit, and is configured to detect an optical power of the second optical signal input to the first optical amplification unit;
and the control module is connected with the optical power detection unit and used for determining the fracture condition of the second optical fiber line based on the detection result of the optical power detection unit.
3. The system of claim 1, wherein the first optical amplifying unit and the second optical amplifying unit each comprise: a pre-amplifier and a power amplifier;
the control module is connected with the preamplifiers in the first optical amplifying unit and the second optical amplifying unit and is used for determining whether the optical fiber transmission line is broken or not;
and the control module is connected with the power amplifier in the second optical amplifying unit and used for controlling the output power of the power amplifier in the second optical amplifying unit.
4. An eye protection method applied to the optical transmission system according to any one of claims 1 to 3, comprising:
when the optical fiber transmission line is broken, determining the breaking position of the optical fiber transmission line;
based on the breaking position of the optical fiber transmission line, the working state of the second optical amplifying unit is controlled by the control module; different breaking positions and different working states of the second optical amplifying unit.
5. The method of claim 4, wherein said determining a location of a break in the optical fiber transmission line comprises:
if the first optical amplifying unit is detected to be in an APR activated state, determining that at least the first optical fiber line is broken;
based on the fracture position of the optical fiber transmission line, the control module is used for controlling the working state of the second optical amplifying unit, and the method comprises the following steps:
and turning off the second optical amplifying unit by using the control module.
6. The method of claim 5, wherein the method further comprises:
when the first optical amplifying unit is detected to be switched from the APR active state to the APR inactive state, the control module is utilized to start the second optical amplifying unit, and a power amplifier in the second optical amplifying unit is controlled to output a second optical signal of a second wave band with the first power.
7. The method of claim 4, wherein said determining a location of a break in the optical fiber transmission line comprises:
if the first optical amplifying unit and the second optical amplifying unit are detected to be in an APR inactive state and the optical power detecting unit cannot detect an optical signal, determining that a second optical fiber line is broken;
based on the fracture position of the optical fiber transmission line, the control module is used for controlling the working state of the second optical amplifying unit, and the method comprises the following steps:
and controlling a power amplifier in the second optical amplifying unit to output a second optical signal of a second wave band by the first power by using the control module.
8. The method according to claim 6 or 7, characterized in that the method further comprises:
when the optical power detection unit detects an optical signal, the control module is used for controlling a power amplifier in the second optical amplification unit to output a second optical signal of a second wave band with second power; the second power is greater than the first power.
9. The method of claim 5, wherein the first optical amplification unit is in an APR-active state, comprising:
a power amplifier in the first optical amplifying unit outputs a first optical signal of a first band at a third power.
10. The method of claim 6, wherein the first optical amplification unit switches from an APR-active state to an APR-inactive state, comprising:
a power amplifier in the first optical amplifying unit outputs a first optical signal of a first band at a fourth power; the fourth power is greater than the third power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311079311.7A CN117118503A (en) | 2023-08-24 | 2023-08-24 | Optical transmission system and eye protection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311079311.7A CN117118503A (en) | 2023-08-24 | 2023-08-24 | Optical transmission system and eye protection method |
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| CN202311079311.7A Pending CN117118503A (en) | 2023-08-24 | 2023-08-24 | Optical transmission system and eye protection method |
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- 2023-08-24 CN CN202311079311.7A patent/CN117118503A/en active Pending
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