CN112636819B - Optical fiber quality detection device and detection method - Google Patents
Optical fiber quality detection device and detection method Download PDFInfo
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- CN112636819B CN112636819B CN201910955548.4A CN201910955548A CN112636819B CN 112636819 B CN112636819 B CN 112636819B CN 201910955548 A CN201910955548 A CN 201910955548A CN 112636819 B CN112636819 B CN 112636819B
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- 238000001514 detection method Methods 0.000 title claims abstract description 387
- 239000013307 optical fiber Substances 0.000 title claims abstract description 196
- 238000004891 communication Methods 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims description 371
- 238000001914 filtration Methods 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims 4
- 238000000253 optical time-domain reflectometry Methods 0.000 description 23
- 238000012360 testing method Methods 0.000 description 12
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- 238000005259 measurement Methods 0.000 description 4
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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
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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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
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Abstract
The invention discloses an optical fiber quality detection device and a detection method, wherein the optical fiber quality detection device is suitable for detecting the quality of at least one optical fiber, and comprises: the two ends of each optical fiber are respectively provided with a detection unit so as to detect the quality of the optical fiber; the receiving unit is in communication connection with the plurality of detecting units and is used for acquiring data acquired by the plurality of detecting units; and the analysis unit is in communication connection with the receiving unit and is used for analyzing the data acquired by the receiving unit to determine the quality of at least one optical fiber. By adopting the invention, the optical fiber detection efficiency can be improved on the premise of controlling the optical fiber detection cost.
Description
Technical Field
The invention relates to the field of communication, in particular to an optical fiber quality detection device and an optical fiber quality detection method.
Background
With the increasing maturity of optical communication technology, the market demand for optical fiber communication is increasing, and the demand of users for optical fiber communication technology is also increasing. In some application scenarios, the optical communication link is required to span desert, marsh, ocean and other environments, which are usually severe, and no energy source in the middle can set up a relay, so that the single-span ultra-long span optical link is easily damaged in the severe environments. Once a problem arises, positioning can only be done by OTDR techniques.
In the related art, the dynamic range of the OTDR device can be basically within 40dB, and for application scenarios above 40dB, the dynamic range needs to be increased by increasing the laser power or increasing the sensitivity of the receiver, which results in a significant cost increase.
Disclosure of Invention
The embodiment of the invention provides an optical fiber quality detection device and an optical fiber quality detection method, which are used for solving the problem of high optical fiber detection cost under the condition of high dynamic range in the prior art.
An embodiment of the present invention proposes an optical fiber quality detection device adapted to perform quality detection on at least one optical fiber, the detection device comprising:
The two ends of each optical fiber are respectively provided with one detection unit so as to detect the quality of the optical fiber;
The receiving unit is in communication connection with the plurality of detection units and is used for acquiring data acquired by the plurality of detection units;
And the analysis unit is in communication connection with the receiving unit and is used for analyzing the data acquired by the receiving unit to determine the quality of at least one optical fiber.
According to some embodiments of the invention, the at least one optical fiber comprises a first optical fiber;
The plurality of detection units includes:
the first detection unit is used for outputting a first detection optical signal to the first optical fiber, collecting a reflected optical signal of the first detection optical signal and filtering a second detection optical signal;
The second detection unit is used for outputting a second detection optical signal to the first optical fiber, collecting a reflected optical signal of the second detection optical signal and filtering out the first detection optical signal;
the second detection unit and the first detection unit are respectively positioned at two ends of the first optical fiber.
According to some embodiments of the invention, the first detection unit comprises:
The first optical time domain reflector is used for outputting a first detection optical signal and collecting a reflected optical signal of the first detection optical signal;
The first multiplexer/demultiplexer is configured to combine the first detection optical signal output by the first optical time domain reflector with the service optical signal, output the combined first detection optical signal to the first optical fiber, and filter the second detection optical signal;
the receiving unit is communicatively coupled to the first optical time domain reflector.
In some embodiments of the invention, the second detection unit comprises:
The second optical time domain reflector is used for outputting a second detection optical signal and collecting a reflected optical signal of the second detection optical signal;
the second multiplexer/demultiplexer is configured to combine the second detection optical signal output by the second optical time domain reflector with the service optical signal, output the combined result to the first optical fiber, and filter the first detection optical signal;
the receiving unit is communicatively coupled to the second optical time domain reflector.
Further, the at least one optical fiber further comprises a second optical fiber; the second detection unit further includes:
The third multiplexer/demultiplexer is configured to combine the second detection optical signal output by the second optical time domain reflector with the service optical signal, output the combined result to the second optical fiber, and filter the first detection optical signal;
the plurality of detection units further includes:
The third detection unit is used for outputting a first detection light signal to the second optical fiber, collecting a reflected light signal of the first detection light signal and filtering a second detection light signal;
the third detection unit and the second detection unit are respectively positioned at two ends of the second optical fiber.
Still further, the at least one optical fiber further comprises a third optical fiber;
the first detection unit further includes:
and the fourth multiplexer/demultiplexer is used for outputting the first detection optical signal output by the first optical time domain reflector and the service optical signal to the third optical fiber in a combined way and filtering the second detection optical signal.
The plurality of detection units further includes:
The fourth detection unit is used for outputting a second detection light signal to the third optical fiber, collecting a reflected light signal of the second detection light signal and filtering the first detection light signal;
the fourth detection unit and the first detection unit are respectively positioned at two ends of the third optical fiber.
In some embodiments of the invention, the third detection unit comprises:
The third optical time domain reflector is used for outputting a first detection optical signal and collecting a reflected optical signal of the first detection optical signal;
A fifth multiplexer/demultiplexer, configured to combine the first detection optical signal output by the third optical time domain reflector with the service optical signal, output the combined first detection optical signal to the second optical fiber, and filter the second detection optical signal;
the receiving unit is communicatively coupled to the third optical time domain reflector.
In some embodiments of the invention, the fourth detection unit comprises:
the fourth optical time domain reflector is used for outputting a second detection optical signal and collecting a reflected optical signal of the second detection optical signal;
A sixth optical combiner-demultiplexer, configured to combine the second detection optical signal output by the fourth optical time domain reflector with the service optical signal, output the combined result to the third optical fiber, and filter the first detection optical signal;
the receiving unit is communicatively coupled to the fourth optical time domain reflector.
In some embodiments of the invention, the at least one optical fiber further comprises a fourth optical fiber;
The third detection unit includes:
A seventh optical combiner-demultiplexer, configured to combine the first detection optical signal output by the third optical time domain reflector with the service optical signal, output the combined first detection optical signal to a fourth optical fiber, and filter the second detection optical signal;
The fourth detection unit includes:
And the eighth multiplexer/demultiplexer is configured to combine the second detection optical signal output by the fourth optical time domain reflector with the service optical signal, output the combined result to the fourth optical fiber, and filter the second detection optical signal.
According to some embodiments of the invention, the apparatus further comprises:
the starting unit is in communication connection with the plurality of detection units and is used for simultaneously starting the plurality of detection units by one key.
According to some embodiments of the invention, the apparatus further comprises:
the configuration unit is in communication connection with the detection units and is used for configuring parameters of the detection units.
According to some embodiments of the invention, the optical fibers are a plurality of, and the optical fibers are sequentially adjacent end to form a ring shape; any two optical fibers adjacent end to end share one detection unit.
The embodiment of the invention also provides a detection method of the optical fiber quality detection device, wherein the optical fiber quality detection device is the optical fiber quality detection device, and the detection method comprises the following steps:
simultaneously starting a plurality of detection units;
acquiring and analyzing data acquired by a plurality of detection units;
the quality of detection of the at least one optical fiber is determined.
By adopting the embodiment of the invention, the optical fiber detection efficiency and the detection reliability can be improved on the premise of controlling the optical fiber detection cost.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of an optical fiber quality detecting apparatus according to an embodiment of the present invention;
Fig. 2 is a flowchart of a detection method of the optical fiber quality detection apparatus according to an embodiment of the present invention.
Reference numerals:
The optical fiber quality detecting apparatus 1,
A first detection unit 10, a first optical time domain reflector 11, a first combiner-divider 12, a fourth combiner-divider 13,
A second detection unit 20, a second optical time domain reflector 21, a second combiner-divider 22, a third combiner-divider 23,
A third detection unit 30, a third optical time domain reflector 31, a fifth combiner/divider 32, a seventh combiner/divider 33,
A fourth detection unit 40, a fourth optical time domain reflector 41, a sixth combiner/demultiplexer 42, an eighth combiner/demultiplexer 43,
A first optical fiber 2, a second optical fiber 3, a third optical fiber 4, and a fourth optical fiber 5.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Typically, the dynamic range of the OTDR device is substantially within 40 dB. This would lead to a significant cost increase if the dynamic range were to continue to be increased, typically by increasing the laser power or increasing the receiver sensitivity.
In the related art, for the scenario above 40dB, an OTDR device with a low dynamic range is generally configured at the transceiver end of the optical fiber link, and the measurement results of the two devices are comprehensively analyzed to determine the optical link event point. Therefore, the equipment cost can be reduced, and all the optical fiber links can be covered by the OTDR equipment.
However, since the same OTDR devices are configured at both ends of the optical fiber link, the two devices use the same wavelength, and if the two OTDR devices are turned on simultaneously during the detection process, serious crosstalk is caused to the two OTDR signals, which seriously affects the measurement result, and even burns out the OTDR devices. If the measurement time of receiving and transmitting two sections of OTDR signals is staggered, starting the receiving end OTDR equipment after the test of the transmitting end is finished, and the test time is doubled. If the test time of one OTDR device is 180s, the OTDR device at the receiving and transmitting end needs 6 minutes after the test, if one station is connected with a plurality of optical fiber links, each test time will be longer, and the test efficiency is lower. And after the optical fiber is interrupted, the network management system cannot timely acquire test data of the OTDR equipment and cannot timely feed back fault points of the optical fiber link.
Based on the above-described problems reflected in the related art, an embodiment of the present invention proposes an optical fiber quality detection apparatus 1, the detection apparatus 1 being adapted to perform quality detection on at least one optical fiber, the detection apparatus 1 comprising: and the two ends of each optical fiber are respectively provided with a detection unit so as to carry out quality detection on the optical fiber.
At least one optical fiber includes a first optical fiber 2, and a plurality of detection units include: a first detection unit 10, a second detection unit 20, a receiving unit and an analysis unit.
The first detection unit 10 may be configured to output a first detection light signal to the first optical fiber 2, collect a reflected light signal of the first detection light signal, and filter out a second detection light signal. The second detection unit 20 may be configured to output a second detection light signal to the first optical fiber 2, collect a reflected light signal of the second detection light signal, and filter out the first detection light signal. The first detection optical signal and the second detection optical signal are two different optical signals, for example, the wavelengths of the first detection optical signal and the second detection optical signal are not equal. The second detecting unit 20 and the first detecting unit 10 are respectively located at two ends of the first optical fiber 2. For example, the first detecting unit 10 and the second detecting unit 20 may be located at the transmitting end and the receiving end of the first optical fiber 2, respectively.
The receiving unit is in communication connection with the plurality of detecting units, and the receiving unit is used for acquiring data acquired by the plurality of detecting units. The analysis unit is in communication with the receiving unit for analyzing the data acquired by the receiving unit to determine the quality of the at least one optical fiber.
For example, the first detection unit 10 may transmit the first detection optical signal into the first optical fiber 2, after the first detection optical signal generates an optical reaction (such as reflection, scattering, etc.) in the first optical fiber 2, a part of the first detection optical signal is reflected back to the first detection unit 10, where the part of the reflected first detection optical signal is a reflected optical signal of the first detection optical signal, and the reflected optical signal of the first detection optical signal may be collected by the first detection unit 10 and sent to the receiving unit.
Similarly, the second detecting unit 20 may transmit the second detection optical signal to the first optical fiber 2, after the second detection optical signal generates an optical reaction (such as reflection, scattering, etc.) in the first optical fiber 2, a part of the second detection optical signal is reflected back to the second detecting unit 20, where the second detection optical signal reflected back by the part is a reflected optical signal of the second detection optical signal, and the reflected optical signal of the second detection optical signal may be collected by the second detecting unit 20 and sent to the receiving unit.
The receiving unit may send the obtained reflected light signals of the first detection light signal and the obtained reflected light signals of the second detection light signal to the analysis unit, and the analysis unit may perform comprehensive analysis and judgment on the reflected light signals of the first detection light signal and the reflected light signals of the second detection light signal, so as to judge whether the first optical fiber 2 has an accident point and locate the accident point, so as to determine the quality of the first optical fiber 2.
According to the optical fiber quality detection device 1 provided by the embodiment of the invention, the first detection unit 10 and the second detection unit 20 with different functions are arranged at the two ends of the first optical fiber 2, so that the detection range of the optical fiber quality detection device 1 can be improved, the whole detection coverage of the first optical fiber 2 is ensured, the first detection unit 10 can be used for filtering out the second detection optical signal doped in the reflected optical signal of the first detection optical signal, the second detection unit 20 can be used for filtering out the first detection optical signal doped in the reflected optical signal of the second detection optical signal, the interference of the first detection optical signal on the second detection unit 20 is avoided, and the interference of the second detection optical signal on the first detection unit 10 is avoided, so that the reliability and the detection efficiency of the detection result of the optical fiber quality detection device 1 can be improved.
On the basis of the above-described embodiments, various modified embodiments are further proposed, and it is to be noted here that only the differences from the above-described embodiments are described in the various modified embodiments for the sake of brevity of description.
According to some embodiments of the present invention, the first detection unit 10 may include: a first optical time domain reflector 11 and a first multiplexer/demultiplexer 12. The first optical time domain reflector 11 is configured to output a first detection optical signal and collect a reflected optical signal of the first detection optical signal, and the first multiplexer/demultiplexer 12 is configured to combine the first detection optical signal output by the first optical time domain reflector 11 with a service optical signal, output the first detection optical signal to the first optical fiber 2, and filter a second detection optical signal. The receiving unit is communicatively connected to a first optical time domain reflector 11.
It should be noted that, the term "service optical signal" as referred to herein is understood to mean an optical signal carrying information transmitted by a signal transmitting device (e.g., a base station, a terminal, etc.).
It will be appreciated that the first combiner/divider 12 is located downstream of the first optical time domain reflector 11 on the transmission path of the first detection optical signal, and that the first combiner/divider 12 is located upstream of the first optical time domain reflector 11 on the transmission path of the reflected optical signal of the first detection optical signal.
The first combiner/demultiplexer 12 may combine the first detected optical signal with the service optical signal to transmit/shunt the first detected optical signal, specifically, after the first optical time domain reflector 11 transmits the first detected optical signal, the first combiner/demultiplexer 12 may combine the first detected optical signal with the service optical signal to transmit to the first optical fiber 2, and after the combined signal of the first detected optical signal and the service optical signal, which are transmitted by combining in the first optical fiber 2, is transmitted to the first combiner/demultiplexer 12, the first combiner/demultiplexer 12 may split the combined signal of the service optical signal and the reflected signal of the first detected optical signal, and transmit the reflected signal of the first detected optical signal to the first optical time domain reflector 11, and transmit the service optical signal to the signal transmitting device. The first multiplexer/demultiplexer 12 may filter out the second detection optical signal in the first optical fiber 2 to prevent the second detection optical signal from entering the first optical time domain reflector 11.
In some embodiments of the present invention, the second detection unit 20 may include: a second optical time domain reflector 21 and a second multiplexer/demultiplexer 22. The second optical time domain reflector 21 is configured to output a second detection optical signal and collect a reflected optical signal of the second detection optical signal. The second multiplexer/demultiplexer 22 is configured to combine the second detection optical signal output by the second optical time domain reflector 21 with the service optical signal, output the combined signal to the first optical fiber 2, and filter the first detection optical signal. The receiving unit is communicatively connected to a second optical time domain reflector 21.
It will be appreciated that the second combiner-divider 22 is located downstream of the second optical time domain reflector 21 on the transmission path of the second detection optical signal, and that the second combiner-divider 22 is located upstream of the second optical time domain reflector 21 on the transmission path of the reflected optical signal of the second detection optical signal.
The second combiner/demultiplexer 22 may combine the second detected optical signal with the service optical signal to transmit/shunt the second detected optical signal, specifically, after the second optical time domain reflector 21 transmits the second detected optical signal, the second combiner/demultiplexer 22 may combine the second detected optical signal with the service optical signal to transmit to the first optical fiber 2, and after the combined signal of the second detected optical signal and the service optical signal, which are transmitted by combining in the first optical fiber 2, is transmitted to the second combiner/demultiplexer 22, the second combiner/demultiplexer 22 may split the combined signal of the service optical signal and the reflected signal of the second detected optical signal, and transmit the reflected signal of the second detected optical signal to the second optical time domain reflector 21, and transmit the service optical signal to the signal transmitting device. The second multiplexer/demultiplexer 22 may filter out the first detection optical signal in the first optical fiber 2 to prevent the first detection optical signal from entering the second optical time domain reflector 21.
Further, the at least one optical fiber further comprises a second optical fiber 3. The second detection unit 20 may further include: the third multiplexer/demultiplexer 23, the third multiplexer/demultiplexer 23 is configured to combine the second detection optical signal output by the second optical time domain reflector 21 and the service optical signal to output to the second optical fiber 3, and filter the first detection optical signal.
The plurality of detection units may further include: the third detection unit 30, the third detection unit 30 is configured to output a first detection optical signal to the second optical fiber 3, collect a reflected optical signal of the first detection optical signal, and filter the second detection optical signal; the third detecting unit 30 and the second detecting unit 20 are respectively located at two ends of the second optical fiber 3.
Therefore, the third multiplexer/demultiplexer 23 and the second optical time domain reflector 21 in the second detection unit 20 can be matched with the third detection unit 30 to realize the detection of the quality of the second optical fiber 3, the arrangement structure is reasonable and compact, the structural arrangement can be reduced, and the device cost is reduced.
Still further, the at least one optical fiber further comprises a fourth optical fiber 5. The first detection unit 10 may further include: the fourth multiplexer/demultiplexer 13, where the fourth multiplexer/demultiplexer 13 is configured to combine the first detection optical signal output by the first optical time domain reflector 11 and the service optical signal to output to the fourth optical fiber 5, and filter the second detection optical signal.
The plurality of detection units may further include: the fourth detection unit 40, the fourth detection unit 40 is configured to output a second detection optical signal to the fourth optical fiber 5, collect a reflected optical signal of the second detection optical signal, and filter the first detection optical signal; the fourth detecting unit 40 and the first detecting unit 10 are respectively located at two ends of the fourth optical fiber 5.
Therefore, the fourth multiplexer/demultiplexer 13 in the first detection unit 10 and the first optical time domain reflector 11 can be matched with the fourth detection unit 40 to realize the detection of the quality of the fourth optical fiber 5, the arrangement structure is reasonable and compact, the structural arrangement can be reduced, and the device cost is reduced.
In some embodiments of the present invention, the third detection unit 30 may include: a third optical time domain reflector 31 and a fifth multiplexer/demultiplexer 32, where the third optical time domain reflector 31 is configured to output the first detection optical signal and collect a reflected optical signal of the first detection optical signal. The fifth multiplexer/demultiplexer 32 is configured to combine the first detection optical signal output by the third optical time domain reflector 31 and the service optical signal, output the combined first detection optical signal and the service optical signal to the second optical fiber 3, and filter the second detection optical signal. The receiving unit is communicatively connected to a third optical time domain reflector 31.
In some embodiments of the present invention, the fourth detection unit 40 may include: a fourth optical time domain reflector 41 and a sixth multiplexer/demultiplexer 42, where the fourth optical time domain reflector 41 is configured to output the second detection optical signal and collect a reflected optical signal of the second detection optical signal. The sixth multiplexer/demultiplexer 42 is configured to combine the second detection optical signal output by the fourth optical time domain reflector 41 with the service optical signal, output the combined second detection optical signal to the fourth optical fiber 5, and filter the first detection optical signal. The receiving unit is communicatively connected to a fourth optical time domain reflector 41.
In some embodiments of the invention, the at least one optical fiber further comprises a third optical fiber 4. The third detecting unit 30 may further include: the seventh multiplexer/demultiplexer 33, the seventh multiplexer/demultiplexer 33 is configured to combine the first detection optical signal output by the third optical time domain reflector 31 and the service optical signal, output the combined first detection optical signal and the service optical signal to the third optical fiber 4, and filter the second detection optical signal. The fourth detection unit 40 may further include: the eighth optical multiplexer/demultiplexer 43, the eighth optical multiplexer/demultiplexer 43 is configured to combine the second detection optical signal output by the fourth optical time domain reflector 41 and the service optical signal, output the combined second detection optical signal to the third optical fiber 4, and filter the second detection optical signal.
According to some embodiments of the present invention, the optical fiber quality detecting apparatus 1 may further include: the starting unit is in communication connection with the plurality of detection units and is used for simultaneously starting the plurality of detection units by one key.
Thus, synchronous detection of a plurality of detecting units can be realized, so that the detecting time period of the optical fiber quality detecting device 1 can be shortened, and the detecting efficiency can be improved.
According to some embodiments of the present invention, the optical fiber quality detecting apparatus 1 may further include: the configuration unit is in communication connection with the plurality of detection units and is used for configuring parameters of the plurality of detection units.
According to some embodiments of the invention, the optical fibers are a plurality of optical fibers, and the plurality of optical fibers are sequentially formed in a ring shape in an end-to-end adjacent manner. Any two optical fibers adjacent from beginning to end share one detection unit.
It should be noted that in the description of the present specification, descriptions of terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
An optical fiber quality detecting apparatus 1 according to an embodiment of the present invention is described in detail below with reference to fig. 1 in a specific embodiment. It is to be understood that the following description is exemplary only and is not intended to limit the invention in any way. All similar structures and similar variations of the invention are included in the scope of the invention.
The optical fiber quality detection device 1 of the embodiment of the invention can be used for simultaneously detecting the first optical fiber 2, the second optical fiber 3, the third optical fiber 4 and the fourth optical fiber 5, wherein the first optical fiber 2, the second optical fiber 3, the third optical fiber 4 and the fourth optical fiber 5 can be sequentially terminated and intersected to form a rectangle.
As shown in fig. 1, an optical fiber quality detecting apparatus 1 according to an embodiment of the present invention includes: the device comprises a first detection unit 10, a second detection unit 20, a third detection unit 30, a fourth detection unit 40, a receiving unit, an analysis unit, a starting unit and a configuration unit.
The configuration unit is communicatively connected to the first detection unit 10, the second detection unit 20, the third detection unit 30, and the fourth detection unit 40, and is configured to configure parameters of the first detection unit 10, parameters of the second detection unit 20, parameters of the third detection unit 30, and parameters of the fourth detection unit 40.
The starting unit is in communication connection with the first detection unit 10, the second detection unit 20, the third detection unit 30 and the fourth detection unit 40, and is used for simultaneously starting the first detection unit 10, the second detection unit 20, the third detection unit 30 and the fourth detection unit 40 by one key.
The first detection unit 10 includes: a first optical time domain reflector 11, a first combiner-divider 12 and a fourth combiner-divider 13. A first optical time domain reflector 11 for outputting a first detection optical signal and collecting a reflected optical signal of the first detection optical signal; the first multiplexer/demultiplexer 12 is configured to combine the first detection optical signal output by the first optical time domain reflector 11 and the service optical signal, output the combined first detection optical signal and the service optical signal to the first optical fiber 2, and filter the second detection optical signal; and the fourth multiplexer/demultiplexer 13 is configured to combine the first detection optical signal output by the first optical time domain reflector 11 and the service optical signal, output the combined first detection optical signal and the service optical signal to the fourth optical fiber 5, and filter the second detection optical signal.
The second detecting unit 20 and the first detecting unit 10 are respectively located at two ends of the first optical fiber 2. The second detection unit 20 includes: a second optical time domain reflector 21, a second combiner-divider 22 and a third combiner-divider 23. The second optical time domain reflector 21 is configured to output a second detection optical signal and collect a reflected optical signal of the second detection optical signal; the second multiplexer/demultiplexer 22 is configured to combine the second detection optical signal output by the second optical time domain reflector 21 with the service optical signal, output the combined signal to the first optical fiber 2, and filter the first detection optical signal; the third multiplexer/demultiplexer 23 is configured to combine the second detection optical signal output by the second optical time domain reflector 21 with the service optical signal, output the combined second detection optical signal to the second optical fiber 3, and filter the first detection optical signal.
The third detecting unit 30 and the second detecting unit 20 are respectively located at two ends of the second optical fiber 3. The third detection unit 30 includes: a third optical time domain reflector 31, a fifth combiner-divider 32 and a seventh combiner-divider 33. The third optical time domain reflector 31 is configured to output a first detection optical signal and collect a reflected optical signal of the first detection optical signal; the fifth multiplexer/demultiplexer 32 is configured to combine the first detection optical signal output by the third optical time domain reflector 31 with the service optical signal, output the combined first detection optical signal to the second optical fiber 3, and filter the second detection optical signal; the seventh multiplexer/demultiplexer 33 is configured to combine the first detection optical signal output by the third optical time domain reflector 31 and the service optical signal, output the combined first detection optical signal and the service optical signal to the third optical fiber 4, and filter the second detection optical signal.
The fourth detecting unit 40 and the third detecting unit 30 are respectively located at two ends of the third optical fiber 4. The fourth detecting unit 40 and the first detecting unit 10 are respectively located at two ends of the fourth optical fiber 5. The fourth detection unit 40 includes: a fourth optical time domain reflector 41, a sixth optical multiplexer/demultiplexer 42 and an eighth optical multiplexer/demultiplexer 43. The fourth optical time domain reflector 41 is configured to output a second detection optical signal and collect a reflected optical signal of the second detection optical signal; the sixth optical combiner/demultiplexer 42 is configured to combine the second detection optical signal output by the fourth optical time domain reflector 41 with the service optical signal, output the combined result to the fourth optical fiber 5, and filter the first detection optical signal; the eighth optical multiplexer/demultiplexer 43 is configured to combine the second detection optical signal output by the fourth optical time domain reflector 41 with the service optical signal, output the combined second detection optical signal to the third optical fiber 4, and filter the second detection optical signal.
The receiving unit is in communication connection with the first detecting unit 10, the second detecting unit 20, the third detecting unit 30 and the fourth detecting unit 40, and is used for acquiring data acquired by the first detecting unit 10, the second detecting unit 20, the third detecting unit 30 and the fourth detecting unit 40.
The analysis unit is in communication with the receiving unit for analyzing the data acquired by the receiving unit to determine the quality of the first optical fiber 2, the second optical fiber 3, the third optical fiber 4 and the fourth optical fiber 5. The analysis unit may comprehensively evaluate the quality of the first optical fiber 2 according to the data collected by the first detection unit 10 and the second detection unit 20, comprehensively evaluate the quality of the second optical fiber 3 according to the data collected by the second detection unit 20 and the third detection unit 30, comprehensively evaluate the quality of the third optical fiber 4 according to the data collected by the fourth detection unit 40 and the third detection unit 30, and comprehensively evaluate the quality of the fourth optical fiber 5 according to the data collected by the first detection unit 10 and the fourth detection unit 40.
It should be noted that, the first optical time domain reflector 11, the second optical time domain reflector 21, the third optical time domain reflector 31, and the fourth optical time domain reflector 41 mentioned above may be optical time domain reflectometers OTDR, where the first optical time domain reflector 11 and the third optical time domain reflector 31 belong to the same series of devices, each may output a first detection optical signal with a wavelength λ1, the second optical time domain reflector 21 and the fourth optical time domain reflector 41 belong to the same series of devices, each may output a second detection optical signal with a wavelength λ2.
By adopting the optical fiber quality detection device 1 provided by the embodiment of the invention, the following beneficial effects can be achieved:
(1) Each optical fiber is comprehensively analyzed by using the OTDR test results with two low dynamic ranges, namely, the testable range of the OTDR is doubled;
(2) Two low-cost low-dynamic-range OTDRs are adopted to replace a single high-cost module, so that the cost is effectively controlled;
(3) By respectively configuring the OTDR of two different working wavelengths at the two receiving and transmitting ends, the time slot-independent OTDR test is realized, the test time is shortened by half compared with the common OTDR measurement, and meanwhile, under the condition of ensuring the test time to be short, the mutual interference between two wavelength optical signals when the two OTDR modules are simultaneously started and transmitted can be eliminated, the risk of burning out the modules is avoided, and the optical fiber detection efficiency is improved;
(4) The starting unit can simultaneously issue commands to a plurality of OTDR modules, test data of the two receiving and transmitting modules are uniformly displayed on the same interface, the operation is more convenient and quick, and the result display is more humanized.
It should be noted that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and changes will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The embodiment of the invention also provides a detection method of the optical fiber quality detection device, wherein the optical fiber quality detection device is the optical fiber quality detection device, as shown in fig. 2, and the detection method comprises the following steps:
S101, simultaneously starting a plurality of detection units;
s102, acquiring and analyzing data acquired by a plurality of detection units;
s103, determining the detection quality of at least one optical fiber.
By adopting the embodiment of the invention, the optical fiber detection efficiency and the detection reliability can be improved on the premise of controlling the optical fiber detection cost.
Claims (12)
1. An optical fiber quality inspection device, wherein the inspection device is adapted to perform quality inspection of at least one optical fiber, the at least one optical fiber including a first optical fiber, the inspection device comprising:
The two ends of each optical fiber are respectively provided with one detection unit so as to detect the quality of the optical fiber;
The receiving unit is in communication connection with the plurality of detection units and is used for acquiring data acquired by the plurality of detection units;
The analysis unit is in communication connection with the receiving unit and is used for analyzing the data acquired by the receiving unit to determine the quality of at least one optical fiber;
The plurality of detection units includes:
the first detection unit is used for outputting a first detection optical signal to the first optical fiber, collecting a reflected optical signal of the first detection optical signal and filtering a second detection optical signal;
the second detection unit is used for outputting the second detection optical signal to the first optical fiber, collecting a reflected optical signal of the second detection optical signal and filtering the first detection optical signal;
The second detection unit and the first detection unit are respectively positioned at two ends of the first optical fiber, the second detection unit and the first detection unit have different functions, and the first detection optical signal and the second detection optical signal are two different optical signals.
2. The apparatus of claim 1, wherein the first detection unit comprises:
The first optical time domain reflector is used for outputting a first detection optical signal and collecting a reflected optical signal of the first detection optical signal;
The first multiplexer/demultiplexer is configured to combine the first detection optical signal output by the first optical time domain reflector with the service optical signal, output the combined first detection optical signal to the first optical fiber, and filter the second detection optical signal;
the receiving unit is communicatively coupled to the first optical time domain reflector.
3. The apparatus of claim 2, wherein the second detection unit comprises:
The second optical time domain reflector is used for outputting a second detection optical signal and collecting a reflected optical signal of the second detection optical signal;
the second multiplexer/demultiplexer is configured to combine the second detection optical signal output by the second optical time domain reflector with the service optical signal, output the combined result to the first optical fiber, and filter the first detection optical signal;
the receiving unit is communicatively coupled to the second optical time domain reflector.
4. The apparatus of claim 3, wherein the at least one optical fiber further comprises a second optical fiber;
The second detection unit further includes:
The third multiplexer/demultiplexer is configured to combine the second detection optical signal output by the second optical time domain reflector with the service optical signal, output the combined result to the second optical fiber, and filter the first detection optical signal;
the plurality of detection units further includes:
The third detection unit is used for outputting a first detection light signal to the second optical fiber, collecting a reflected light signal of the first detection light signal and filtering a second detection light signal;
the third detection unit and the second detection unit are respectively positioned at two ends of the second optical fiber.
5. The apparatus of claim 4, wherein the at least one optical fiber further comprises a third optical fiber;
the first detection unit further includes:
The fourth multiplexer/demultiplexer is configured to combine the first detection optical signal output by the first optical time domain reflector with the service optical signal, output the combined first detection optical signal to the third optical fiber, and filter the second detection optical signal;
The fourth detection unit is used for outputting a second detection light signal to the third optical fiber, collecting a reflected light signal of the second detection light signal and filtering the first detection light signal;
the fourth detection unit and the first detection unit are respectively positioned at two ends of the third optical fiber.
6. The apparatus of claim 5, wherein the third detection unit comprises:
The third optical time domain reflector is used for outputting a first detection optical signal and collecting a reflected optical signal of the first detection optical signal;
A fifth multiplexer/demultiplexer, configured to combine the first detection optical signal output by the third optical time domain reflector with the service optical signal, output the combined first detection optical signal to the second optical fiber, and filter the second detection optical signal;
the receiving unit is communicatively coupled to the third optical time domain reflector.
7. The apparatus of claim 6, wherein the fourth detection unit comprises:
the fourth optical time domain reflector is used for outputting a second detection optical signal and collecting a reflected optical signal of the second detection optical signal;
A sixth optical combiner-demultiplexer, configured to combine the second detection optical signal output by the fourth optical time domain reflector with the service optical signal, output the combined result to the third optical fiber, and filter the first detection optical signal;
the receiving unit is communicatively coupled to the fourth optical time domain reflector.
8. The apparatus of claim 7, wherein the at least one optical fiber further comprises a fourth optical fiber;
The third detection unit includes:
a seventh optical combiner-demultiplexer, configured to combine the first detection optical signal output by the third optical time domain reflector with the service optical signal, output the combined first detection optical signal to a fourth optical fiber, and filter the second detection optical signal; the fourth detection unit includes:
And the eighth multiplexer/demultiplexer is configured to combine the second detection optical signal output by the fourth optical time domain reflector with the service optical signal, output the combined result to the fourth optical fiber, and filter the second detection optical signal.
9. The apparatus as recited in claim 1, further comprising:
the starting unit is in communication connection with the plurality of detection units and is used for simultaneously starting the plurality of detection units by one key.
10. The apparatus as recited in claim 1, further comprising:
the configuration unit is in communication connection with the detection units and is used for configuring parameters of the detection units.
11. The device of claim 1, wherein the optical fibers are a plurality of, the optical fibers being sequentially formed in a loop in a head-to-tail proximity;
Any two optical fibers adjacent end to end share one detection unit.
12. A detection method of an optical fiber quality detection apparatus according to any one of claims 1 to 11, characterized in that the optical fiber quality detection apparatus comprises:
simultaneously starting a plurality of detection units;
acquiring and analyzing data acquired by a plurality of detection units;
the quality of detection of the at least one optical fiber is determined.
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