CN113364518A - Multi-path optical fiber attenuation test system - Google Patents
Multi-path optical fiber attenuation test system Download PDFInfo
- Publication number
- CN113364518A CN113364518A CN202110599169.3A CN202110599169A CN113364518A CN 113364518 A CN113364518 A CN 113364518A CN 202110599169 A CN202110599169 A CN 202110599169A CN 113364518 A CN113364518 A CN 113364518A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- module
- optical
- signal
- test system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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]
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention discloses a multi-path optical fiber attenuation testing system which comprises a connecting assembly, a processing assembly and an upper computer, wherein the connecting assembly comprises a multi-path optical switch and a light coupler connected with the multi-path optical switch; the processing assembly is connected with the connecting assembly and comprises an optical signal sending module and an optical signal receiving module connected with the optical signal sending module; the upper computer is connected with the processing assembly and comprises a CPU module, a display module and a key module, wherein the display module and the key module are connected with the CPU module; the multi-path optical fiber attenuation test system can simultaneously carry out attenuation test on the multi-path optical fibers, the test result is automatically stored, only one person is needed for operation, and a large amount of manpower is saved. Moreover, the device can intelligently and accurately detect the attenuation of the optical fiber and detect the fault of the optical fiber link in a complex and changeable environment, greatly improves the working efficiency of testing and maintaining the optical fiber link, ensures smooth communication, and achieves the purposes of quantitatively checking and accepting the optical fiber loop of the intelligent station and simplifying the checking and accepting process.
Description
Technical Field
The invention relates to the technical field of optical fiber detection, in particular to a multi-path optical fiber attenuation testing system.
Background
The optical fiber attenuation tester has the function of performing attenuation test on the optical fiber core in the transformer substation so as to determine whether the fiber core is qualified, the conventional optical fiber attenuation tester can only test one optical fiber core at a time, cannot test multiple fiber cores simultaneously, and wastes time and labor.
The traditional optical fiber link detection method has the following defects: the optical fiber links of the intelligent substation are numerous, the optical fiber attenuation test is time-consuming and labor-consuming during acceptance check, and the test result cannot be automatically stored. The traditional detection method determines the on-off of the optical fiber link by using a manual polishing and observation mode, needs a group of multiple persons, can only test one path of optical fiber at one time, and has low working efficiency; the used light source for lighting is a light emitting diode and the like, the light source has performance defects of small power, easy scattering and the like, and when the device is used outdoors with strong sunlight, under complex working conditions such as long distance of an optical fiber link and the like, the lighting effect is influenced, and the detection accuracy of the optical fiber link is not high. In order to solve the problems that optical fiber links of the current intelligent transformer substation are numerous, and the optical fiber attenuation test wastes time and labor during acceptance check, the multi-path optical fiber attenuation test system is developed by the project. Moreover, the device can intelligently and accurately detect the attenuation of the optical fiber and detect the fault of the optical fiber link under the complicated and changeable environment, particularly under the strong light environment. The system can greatly improve the efficiency of optical fiber link testing and maintenance work, ensure smooth communication and achieve the purposes of quantitatively checking and accepting the optical fiber loop of the intelligent station and simplifying the checking and accepting process.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned problems of the conventional multi-path optical fiber attenuation test system.
Therefore, the present invention is to provide a multi-path optical fiber attenuation testing system, which can perform attenuation testing on multiple paths of optical fibers simultaneously, automatically store the testing results, and only need one person to operate, thereby saving a lot of manpower.
In order to solve the technical problems, the invention provides the following technical scheme: a multi-path optical fiber attenuation test system comprises a connecting assembly, a processing assembly and an upper computer, wherein the connecting assembly comprises a multi-path optical switch and a light coupler connected with the multi-path optical switch; the processing assembly is connected with the connecting assembly and comprises an optical signal sending module and an optical signal receiving module connected with the optical signal sending module; and the upper computer is connected with the processing assembly and comprises a CPU module, a display module and a key module, wherein the display module and the key module are connected with the CPU module.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the multi-path optical switch is provided with a plurality of paths of optical fiber interfaces, and each path of optical fiber interface is used for connecting one path of tested optical fiber in an external optical fiber network.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the optical signal transmitting module comprises an E/O converter connected with the optical fiber coupler and a pulse generator connected with the E/O converter.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the E/O converter converts the electric pulse signal into an optical signal and inputs the optical signal into the optical fiber coupler.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the pulse generator generates an electric pulse signal, sends the electric pulse signal to the E/O converter, can receive a clock signal instruction sent by the CPU module, and generates the electric pulse signal according to the clock signal instruction sent by the CPU module.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the optical signal receiving module comprises an SPD detector connected with the optical fiber coupler and a counter connected with the SPD detector.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: and the SPD detector photoelectrically converts the detected weak photon signals into electric signals and sends the electric signals into the counter.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the counter counts according to a clock signal instruction sent by the CPU module, matches the electric signal converted by the SPD detector with the clock signal to form a data packet, and sends the data packet to the CPU module.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the CPU module can control whether each module in the OTDR detection system works normally or not, sends clock signals to the optical signal sending module and the optical signal receiving module, and stores original parameters of electric signals in the CPU module, compares the data packets sent by the counter with the original parameters of the electric signals to judge whether the reflection signals are abnormal or not, and obtains the time of the abnormal signals according to the counter to obtain the distance of the abnormal optical fibers.
As a preferable embodiment of the multi-path optical fiber attenuation testing system of the present invention, wherein: the display module displays the reflected signal data and the abnormal optical fiber distance processed by the CPU module, and the key module is used for starting the whole system and inputting a starting instruction to the CPU module.
The invention has the beneficial effects that:
the multi-path optical fiber attenuation test system can simultaneously carry out attenuation test on the multi-path optical fibers, the test result is automatically stored, only one person is needed for operation, and a large amount of manpower is saved. Moreover, the device can intelligently and accurately detect the attenuation of the optical fiber and detect the fault of the optical fiber link under the complicated and changeable environment, particularly under the strong light environment. The system can greatly improve the efficiency of optical fiber link testing and maintenance work, ensure smooth communication and achieve the purposes of quantitatively checking and accepting the optical fiber loop of the intelligent station and simplifying the checking and accepting process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic diagram of the overall structure of the multi-channel fiber attenuation testing system of the present invention.
FIG. 2 is a logic diagram of the overall structure of the multi-path fiber attenuation test system of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein 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 implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Example 1
Referring to fig. 1, for the first embodiment of the present invention, a multi-path optical fiber attenuation testing system is provided, which includes a connection component 100, a processing component 200 and an upper computer 300, wherein the connection component 100 includes a multi-path optical switch 101 and a light coupler 102 connected to the multi-path optical switch 101; the processing assembly 200 is connected with the connecting assembly 100 and comprises an optical signal transmitting module 201 and an optical signal receiving module 202 connected with the optical signal transmitting module 201; and the upper computer 300 is connected with the processing component 200 and comprises a CPU module 301, a display module 302 and a key module 303, wherein the display module 302 and the key module 303 are connected with the CPU module 301.
The connecting assembly 100 is used for connecting a multi-path optical fiber attenuation test system and an optical fiber to be tested, the optical fiber to be tested is connected into the test system and participates in a signal test process, the processing assembly 200 is used for transmitting and receiving electric signals and optical signals to the optical fiber to be tested, whether the optical fiber to be tested is abnormal or not and a result of an abnormal distance can be obtained by comparing the electric signals with a standard value through transmitting the test optical signals and receiving the test optical signals, the upper computer 300 is used for controlling the test system to be started and outputting a graphical test result, and a worker can conveniently check the test result.
The multi-path optical switch 101 provides an optical fiber interface to access an optical fiber to be tested into the test system, the optical fiber coupler 102 is used for splitting or merging an optical signal in the optical fiber to be tested, the transmitted test signal and the reflected test signal are split by the optical fiber coupler 102, the optical signal sending module 201 is used for converting an electrical signal in the system into an optical signal and outputting the optical signal to the optical fiber coupler 102, the optical fiber coupler 102 outputs the optical signal into the optical fiber to be tested from the multi-path optical switch 101, the optical signal receiving module 202 receives the optical signal backscattered from the optical fiber to be tested and converts the optical signal into the electrical signal to form a data packet which is sent to the upper computer 300, the CPU module 301 provides a clock instruction, the received data packet is compared with original parameters stored in the internal memory of the CPU module 301 to obtain whether the reflected signal is abnormal to judge whether the optical fiber is smooth or not, and the time when the abnormal signal appears is obtained by the timing module, the abnormal distance is calculated and output to the display module 302, and the key module 303 is used for inputting a starting instruction to the CPU module 301 and starting the test system.
Example 2
Referring to fig. 1 to 2, a second embodiment of the present invention is different from the first embodiment in that: the multi-path optical switch 101 is provided with a plurality of optical fiber interfaces, and each optical fiber interface is used for connecting one path of tested optical fiber in an external optical fiber network. The optical signal transmission module 201 includes an E/O converter 201a connected to the optical fiber coupler 102 and a pulse generator 201b connected to the E/O converter 201 a. The E/O converter 201a converts the electrical pulse signal into an optical signal, which is input into the fiber coupler 102.
The pulse generator 201b generates an electrical pulse signal, sends the electrical pulse signal to the E/O converter 201a, can receive a clock signal instruction sent by the CPU module 301, and generates the electrical pulse signal according to the clock signal instruction sent by the CPU module 301. The optical signal receiving module 202 includes an SPD detector 202a connected to the optical fiber coupler 102 and a counter 202b connected to the SPD detector 202 a.
The CPU module 301 can control whether each module in the OTDR detection system works normally, and send a clock signal to the optical signal sending module 201 and the optical signal receiving module 202, and the clock signal has an original parameter of an electrical signal stored therein, compare the data packet sent by the counter 202b with the original parameter of the electrical signal, determine whether the reflected signal is abnormal, and obtain the time when the abnormal signal occurs according to the counter 202b, thereby obtaining the distance between the abnormal optical fibers.
The display module 302 displays the reflected signal data and the abnormal fiber distance processed by the CPU module 301, and the key module 303 is used to start the entire system and can input a start instruction to the CPU module 301.
Compared with the embodiment 1, further, the multi-path optical switch 101 is designed with multi-path optical fiber interfaces, each path of optical fiber interface can be used for one path of tested optical fiber in the external optical fiber network, the multi-path interface is connected to the multi-path optical switch 101 inside the instrument, then the button module 303 is pressed to start the button, the CPU module 301 controls whether each module in the OTDR detection system works normally, the CPU module 301 outputs a clock signal to enter the pulse generator 201b, the SPD detector 202a, the pulse generator 201b generates a required electrical pulse signal, the electrical pulse signal is converted into an optical signal by the E/O converter 201a and then input into the optical fiber coupler 102, the optical signal is output into the multi-path optical switch 101 through the optical fiber coupler, the optical pulse signal sent out through the optical fiber interface enters the tested optical fiber, the optical pulse signal is reversely scattered back by the tested optical fiber, and the reflected signal passes through the optical fiber interface and the multi-path optical switch 101, the reverse signal enters the optical fiber coupler 102, the reflected signal is coupled and output to the SPD detector 202a by the optical fiber coupler 102, the SPD detector 202a photoelectrically converts the detected weak photon signal into an electrical signal and sends the electrical signal to the counter 202b, the electrical signal is processed by the counter 202b and then is transmitted to the CPU module 301, and the electrical signal is compared with the original parameters stored in the memory of the CPU module 301 to determine whether the optical fiber of the path is smooth by determining whether the reflected signal is abnormal, the time of the abnormal signal is obtained by the counter 202b, the abnormal distance is calculated, and the abnormal distance is output to the display. After the configured test of one path of the tested optical fiber line is completed, the configuration can be performed again to switch the switch to another path, and the optical fiber line detection is continued according to the above flow, in the process, the CPU module 301 can set program control, the switch switching is automatically configured, and one path of the switch sequentially detects the accessed tested optical fiber line.
The traditional optical fiber link detection method has the following defects: the optical fiber links of the intelligent substation are numerous, the optical fiber attenuation test is time-consuming and labor-consuming during acceptance check, and the test result cannot be automatically stored. The traditional detection method determines the on-off of the optical fiber link by using a manual polishing and observation mode, needs a group of multiple persons, can only test one path of optical fiber at one time, and has low working efficiency; the used light source for lighting is a light emitting diode and the like, the light source has performance defects of small power, easy scattering and the like, and when the device is used outdoors with strong sunlight, under complex working conditions such as long distance of an optical fiber link and the like, the lighting effect is influenced, and the detection accuracy of the optical fiber link is not high. In order to solve the problems that optical fiber links of the current intelligent transformer substation are numerous, and the optical fiber attenuation test wastes time and labor during acceptance check, the multi-path optical fiber attenuation test system in the project can simultaneously carry out attenuation test on the multi-path optical fibers, automatically stores test results, only needs one person to operate, and saves a large amount of manpower. Moreover, the device can intelligently and accurately detect the attenuation of the optical fiber and detect the fault of the optical fiber link under the complicated and changeable environment, particularly under the strong light environment. The optical fiber link testing and maintaining efficiency is greatly improved, smooth communication is ensured, and the purposes of carrying out quantitative acceptance check on the optical fiber loop of the intelligent station and simplifying the acceptance check flow are achieved.
The rest of the structure is the same as that of embodiment 1.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A multi-path optical fiber attenuation test system is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a connection component (100) comprising a multi-way optical switch (101) and a light coupler (102) connected with the multi-way optical switch (101);
the processing assembly (200) is connected with the connecting assembly (100) and comprises an optical signal transmitting module (201) and an optical signal receiving module (202) connected with the optical signal transmitting module (201); and the number of the first and second groups,
the upper computer (300) is connected with the processing component (200) and comprises a CPU module (301), a display module (302) and a key module (303), wherein the display module (302) and the key module are connected with the CPU module (301).
2. The multiple fiber attenuation test system of claim 1, wherein: the multi-path optical switch (101) is provided with a plurality of paths of optical fiber interfaces, and each path of optical fiber interface is used for connecting one path of tested optical fiber in an external optical fiber network.
3. The multiple fiber loss test system of claim 1 or 2, wherein: the optical signal transmission module (201) comprises an E/O converter (201a) connected with the optical fiber coupler (102) and a pulse generator (201b) connected with the E/O converter (201 a).
4. The multiple fiber attenuation test system of claim 3, wherein: the E/O converter (201a) converts the electrical pulse signal into an optical signal, which is input into the optical fiber coupler (102).
5. The multiple fiber attenuation test system of claim 4, wherein: the pulse generator (201b) generates an electric pulse signal, sends the electric pulse signal to the E/O converter (201a), can receive a clock signal instruction sent by the CPU module (301), and generates the electric pulse signal according to the clock signal instruction sent by the CPU module (301).
6. The multiple fiber optic decay test system of any of claims 1, 2, 4, and 5, wherein: the optical signal receiving module (202) comprises an SPD detector (202a) connected with the optical fiber coupler (102) and a counter (202b) connected with the SPD detector (202 a).
7. The multiple fiber attenuation test system of claim 6, wherein: the SPD detector (202a) photoelectrically converts the detected weak photon signals into electric signals and sends the electric signals into the counter (202 b).
8. The multiple fiber attenuation test system of claim 7, wherein: the counter (202b) counts according to a clock signal instruction sent by the CPU module (301), matches the electric signal converted by the SPD detector (202a) with the clock signal to form a data packet, and sends the data packet to the CPU module (301).
9. The multi-fiber decay test system of any of claims 1, 2, 4, 5, 7, and 8, wherein: the CPU module (301) can control whether each module in the OTDR detection system works normally, and sends clock signals to the optical signal sending module (201) and the optical signal receiving module (202), and original parameters of electric signals are stored in the CPU module, and according to a data packet sent by the counter (202b), the CPU module compares the data packet with the original parameters of the electric signals, judges whether the reflected signals are abnormal, and obtains the time of the abnormal signals according to the counter (202b), so as to obtain the distance of the abnormal optical fibers.
10. The multiple fiber attenuation test system of claim 9, wherein: the display module (302) displays the reflected signal data and the abnormal optical fiber distance processed by the CPU module (301), and the key module (303) is used for starting the whole system and can input a starting instruction to the CPU module (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599169.3A CN113364518A (en) | 2021-05-31 | 2021-05-31 | Multi-path optical fiber attenuation test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599169.3A CN113364518A (en) | 2021-05-31 | 2021-05-31 | Multi-path optical fiber attenuation test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113364518A true CN113364518A (en) | 2021-09-07 |
Family
ID=77528273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110599169.3A Withdrawn CN113364518A (en) | 2021-05-31 | 2021-05-31 | Multi-path optical fiber attenuation test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113364518A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204465539U (en) * | 2014-12-02 | 2015-07-08 | 国家电网公司 | A kind of multichannel fibre core testing apparatus |
| CN206993118U (en) * | 2017-06-30 | 2018-02-09 | 成都成电光信科技股份有限公司 | A kind of optical time domain reflection test device for realizing multi-channel optical fibre test |
| CN109831248A (en) * | 2019-03-01 | 2019-05-31 | 成都成电光信科技股份有限公司 | The synthesis optical fiber inspection device and method of integrated FC optical fiber link and Network Check |
| CN210780800U (en) * | 2020-01-03 | 2020-06-16 | 国网安徽省电力有限公司亳州供电公司 | Multi-path optical fiber intelligent detection device |
-
2021
- 2021-05-31 CN CN202110599169.3A patent/CN113364518A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204465539U (en) * | 2014-12-02 | 2015-07-08 | 国家电网公司 | A kind of multichannel fibre core testing apparatus |
| CN206993118U (en) * | 2017-06-30 | 2018-02-09 | 成都成电光信科技股份有限公司 | A kind of optical time domain reflection test device for realizing multi-channel optical fibre test |
| CN109831248A (en) * | 2019-03-01 | 2019-05-31 | 成都成电光信科技股份有限公司 | The synthesis optical fiber inspection device and method of integrated FC optical fiber link and Network Check |
| CN210780800U (en) * | 2020-01-03 | 2020-06-16 | 国网安徽省电力有限公司亳州供电公司 | Multi-path optical fiber intelligent detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104333415B (en) | A kind of multichannel automatic test approach and system for testing optical module | |
| CN201429496Y (en) | Multifunctional optical fiber test instrument | |
| CN104467959B (en) | Method and apparatus for hands-free fiber optic testing using optical loss testing instruments | |
| CN103957067B (en) | Demodulator automatic testing equipment | |
| CN108964754A (en) | Insertion Loss bearing calibration, system and the Insertion Loss measuring system of optic communication device | |
| CN113364518A (en) | Multi-path optical fiber attenuation test system | |
| CN107335630B (en) | Antenna test system and method | |
| CN108833008B (en) | Optical module receiving terminal performance testing device | |
| CN109660294B (en) | Intelligent optical fiber matching system, method and device | |
| CN210780800U (en) | Multi-path optical fiber intelligent detection device | |
| CN104215427A (en) | OTDR (optical time domain reflectometry)-based device and method allowing dead zone-free optical fiber monitoring and positioning | |
| CN205079928U (en) | Multifunctional testing device | |
| CN106941380B (en) | Light path control equipment and ONT test macro | |
| CN102394695A (en) | Integrated test system of optical line | |
| CN101738308A (en) | Data collecting method, device and system for optical cable testing | |
| CN201947270U (en) | Light power monitoring system | |
| CN102158279A (en) | Light power monitoring system and method thereof | |
| CN208424363U (en) | FTTx terminated line tester | |
| CN219536074U (en) | Single-multimode integrated optical time domain reflectometer | |
| CN108337046B (en) | FTTx terminal line tester | |
| Ivanov et al. | Problems of metrological support of measurements in fiber optic transmission systems | |
| CN205490550U (en) | Duplex position WDM test system | |
| CN205484635U (en) | Automatic conduction testing of multichannel cable and test result transmission system with to mobile terminal function of charging | |
| CN213714684U (en) | Multifunctional tail fiber testing device | |
| CN207717330U (en) | A kind of batch type telecommunication optical fiber integrity detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210907 |
|
| WW01 | Invention patent application withdrawn after publication |