CN110243575B - Method, device and system for detecting radio frequency optical transmission state on line - Google Patents
Method, device and system for detecting radio frequency optical transmission state on line Download PDFInfo
- Publication number
- CN110243575B CN110243575B CN201910525681.6A CN201910525681A CN110243575B CN 110243575 B CN110243575 B CN 110243575B CN 201910525681 A CN201910525681 A CN 201910525681A CN 110243575 B CN110243575 B CN 110243575B
- Authority
- CN
- China
- Prior art keywords
- resistor
- amplifier
- radio frequency
- optical transmission
- optical
- 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.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 93
- 230000005540 biological transmission Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 61
- 239000013307 optical fiber Substances 0.000 claims abstract description 28
- 230000036541 health Effects 0.000 claims abstract description 18
- 238000007405 data analysis Methods 0.000 claims abstract description 16
- 230000003321 amplification Effects 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 230000004927 fusion Effects 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 25
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/4446—Type of detector
- G01J2001/446—Photodiode
- G01J2001/4466—Avalanche
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a method, a device and a system for detecting the on-line state of radio frequency optical transmission, wherein the method comprises the following steps: step 1, arranging N optical detection assemblies on N radio frequency optical transmission channels, and enabling a photoelectric avalanche diode of each optical detection assembly to be arranged at a light outlet end of a heat-shrinkable sleeve at a fiber fusion joint; step 2, detecting a leakage optical signal at the light outlet end of the heat-shrinkable sleeve at the optical fiber welding position by the photoelectric avalanche diode, and generating a corresponding photocurrent to input into a signal amplifying circuit; and 3, the signal amplification circuit acquires corresponding sampling voltage according to the photocurrent, and outputs the sampling voltage to the health data analysis unit through the AD acquisition circuit. The invention adopts the photoelectric avalanche diode to detect the light leakage signal at the light-emitting end of the heat-shrinkable sleeve at the optical fiber welding position; the signal amplification circuit is adopted for sampling and then amplifying, and the signals are output to the health data analysis unit through the AD acquisition circuit, so that the optical power in the optical fiber is measured, and the on-line detection is carried out on the radio frequency optical transmission state.
Description
Technical Field
The invention relates to the technical field of radio frequency optical transmission, in particular to a method, a device and a system for detecting the on-line state of radio frequency optical transmission.
Background
Due to the broadband characteristic of light, the radio frequency optical transmission technology is widely applied to radio frequency signal transmission in electronic warfare, however, the optical connector is sensitive to dust and the stretch-resistant and bending-resistant capability of the optical transmission line is limited, so that the abnormal phenomenon of optical loss often occurs when the system is applied.
The existing optical transmission detection method mostly adopts an optical power meter offline measurement calibration technology, the technology is mature and widely applied at present, and the optical transmission quality is judged by comparing the repeated detection quantity through historical records of the optical power value of each connection point with a standard optical connector (such as an FC connector). There are mainly four limitations to this approach,
one is as follows: off-line testing is required, i.e. the assembled fibre optic connections in the system need to be disassembled. This can cause maintenance difficulties in the detection of other devices that are not easily disassembled, such as airborne wingtips and empennages.
The second step is as follows: there is a dependence on whether standard optical connectors are used for the equipment and system rf optical transmission, so there are a lot of dead zones for fault detection due to limited detectable points.
And thirdly: in engineering application, maintenance detection can only collect detection data for a very limited number of times, so that the radio frequency optical transmission health deterioration process, cause judgment and real-time fault influence evaluation are difficult.
Fourthly, the method comprises the following steps: due to the size, environmental adaptability, cost and the like of the optical power meter, the detection equipment is difficult to be miniaturized and applied integrally.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the existing problems, the method, the device and the system for detecting the radio frequency optical transmission state on line are provided, and the optical signal leaked from the light outlet end of the heat shrinkable sleeve at the optical fiber fusion splice is detected by adopting the photoelectric avalanche diode, so that the radio frequency optical transmission state on line detection is realized.
The invention provides a radio frequency optical transmission state online detection method, which comprises the following steps:
and 3, the signal amplification circuit acquires corresponding sampling voltage according to the photocurrent, and outputs the sampling voltage to the health data analysis unit through the AD acquisition circuit.
The invention also provides a radio frequency light transmission state online detection device, which comprises: n light detection components; the optical detection assembly comprises a high-voltage bias circuit, a photoelectric avalanche diode and a signal amplification circuit which are sequentially connected; the photoelectric avalanche diode is arranged at the light-emitting end of the heat-shrinkable sleeve at the optical fiber fusion joint; the signal amplification circuit is connected to the health data analysis unit through the AD acquisition circuit.
Furthermore, the on-line detection device for the radio frequency light transmission state also comprises a fixing device; the fixing device comprises N spaced mounting grooves; each mounting groove includes: a channel for placing a heat shrinkable sleeve and a card slot for mounting a photoelectric avalanche diode.
Furthermore, the photoelectric avalanche diode is fixedly arranged in the clamping groove by adopting silicon rubber.
Further, the signal amplification circuit includes: the first-stage amplifying circuit and the second-stage amplifying circuit are connected; the primary amplifying circuit is connected with the photoelectric avalanche diode; and the secondary amplifying circuit is connected with the AD acquisition circuit.
Further, the first-stage amplifying circuit includes: the circuit comprises an amplifier U3A, a resistor R11, a resistor R12, a resistor R15, a resistor R17, a capacitor C9, a capacitor C11 and a capacitor C12; the positive input end of the amplifier U3A is connected with the P pin of the avalanche photodiode through a resistor R15; one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected to an electric connection point between the resistor R15 and the P pin of the avalanche photodiode; one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is connected to an electric connection point between the resistor R15 and the positive input end of the amplifier U3A; one end of the resistor R17 is grounded, and the other end of the resistor R17 is connected to an electric connection point between the resistor R15 and the positive input end of the amplifier U3A; the negative input end of the amplifier U3A is grounded through a resistor R11, and is connected with the output end of the amplifier U3A through a capacitor C9 and a resistor R12 which are connected in parallel; the output end of the amplifier U3A is connected with a two-stage amplifying circuit.
Further, the resistor R17 is a sampling resistor and is set to 10M Ω.
Further, the two-stage amplifying circuit comprises: an amplifier U3B, a resistor R14 and a resistor R16; the positive input end of the amplifier U3B is connected with the first-stage amplifying circuit through a resistor R16, and the negative input end is connected with the output end of the amplifier; the output end of the amplifier U3B is connected with the AD acquisition circuit through a resistor R14.
Further, the type of the amplifier U3A and the type of the amplifier U3B are AD 823.
The invention also provides a radio frequency optical transmission state online detection system, which comprises two radio frequency optical transmission state online detection devices; the two on-line detection devices for the radio frequency light transmission state are respectively arranged at the optical fiber fusion joints of the transmitting assembly and the receiving assembly for the radio frequency light transmission; and the health data analysis units of the two radio frequency optical transmission state online detection devices are connected to an upper computer through a network.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention adopts the photoelectric avalanche diode to detect the leakage light signal at the light-emitting end of the heat-shrinkable sleeve at the optical fiber welding position to generate light current; the photocurrent is sampled and amplified by a signal amplifying circuit and is output to a health data analysis unit in a voltage form through an AD acquisition circuit, so that the optical power in the optical fiber is measured, and the on-line detection of the transmission state of the radio frequency light is realized. The radio frequency optical transmission state on-line detection device has the advantages of no influence on the reliability of a main optical link, small occupied volume, high induction sensitivity and low noise, is an ideal radio frequency optical transmission state detection device for 1310 nm-1550 nm waveband optical fiber communication, meets the requirements of high airborne reliability, small volume and low weight, and effectively solves the problem that the radio frequency optical transmission state cannot be detected on line in an airborne environment. The method can not only detect faults and normal states, but also evaluate the trend of quality trend based on data, and meanwhile, the detection misleading of the faults of the radio frequency and light conversion devices in the traditional method does not exist.
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 embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of optical signal leakage at the light-emitting end of a heat-shrinkable tube at an optical fiber fusion splice.
Fig. 2 is a schematic diagram of an on-line detection device for radio frequency light transmission status according to the present invention.
FIG. 3 is a schematic view of the fixing device of the optical detection assembly of the present invention.
Fig. 4 is a schematic circuit diagram of the photodetection module according to the present invention.
Fig. 5 is a schematic diagram of an on-line detection system for radio frequency light transmission status according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In radio frequency optical transmission, signal physical connection is carried out in the areas near the transmitting assembly and the receiving assembly, namely, an optical fiber welding signal channel is adopted, a heat-shrinkable sleeve is used for protecting the optical fiber connection part in the optical fiber welding process, as shown in fig. 1, when the transmitter assembly is powered on to work, a weak optical signal (-55dBm to-45 dBm) is leaked from the light outlet end of the optical fiber connection part, and the size of the leaked optical signal is related to the optical insertion loss of the optical fiber welding part, the material of the heat-shrinkable sleeve and the degree of thermal deformation. Therefore, the invention multiplexes the leaked optical signals to carry out the on-line detection of the radio frequency optical transmission state.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
As shown in fig. 2, the device for on-line detecting a radio frequency optical transmission state mainly performs on-line detection on a radio frequency optical transmission state in a 1310 nm-1550 nm waveband optical fiber according to the present embodiment, including: n light detection components; the optical detection assembly comprises a high-voltage bias circuit, a photoelectric avalanche diode (APD) and a signal amplification circuit which are sequentially connected; the photoelectric avalanche diode is arranged at the light-emitting end of the heat-shrinkable sleeve at the optical fiber fusion joint; the signal amplification circuit is connected to the health data analysis unit through the AD acquisition circuit. The health data analysis unit is a data analysis tool, such as a histogram, a trend graph, and the like, and generally refers to data trend analysis with a time axis, so as to facilitate observation of a life cycle state of an optical link of radio frequency optical transmission. The radio frequency optical transmission state on-line detection device of the embodiment is a peripheral detection device arranged on an optical link of radio frequency optical transmission, and does not affect fault detection and the like of the optical link.
Based on the above device for detecting the radio frequency optical transmission state on line, a method for detecting the radio frequency optical transmission state on line is also provided, which comprises the following steps:
and 3, the signal amplification circuit acquires corresponding sampling voltage according to the photocurrent, and outputs the sampling voltage to the health data analysis unit through the AD acquisition circuit.
In the embodiment, a leakage optical signal at the light outlet end of the heat-shrinkable sleeve at the optical fiber welding position is detected by adopting the photoelectric avalanche diode to generate photocurrent; the photocurrent is sampled and amplified by a signal amplifying circuit and is output to a health data analysis unit in a voltage form through an AD acquisition circuit, so that the optical power in the optical fiber is measured, and the on-line detection of the transmission state of the radio frequency light is realized.
Further, the on-line detection device for the radio frequency light transmission state further comprises a fixing device 20; the fixing device 20, as shown in fig. 3, includes N spaced mounting slots 30; each mounting groove 30 includes: a channel 31 for placing a heat shrink, and a card slot 32 for mounting a photo avalanche diode. Since the small displacement of the avalanche photodiode 10 will greatly affect the magnitude of the photocurrent, in order to ensure the constant photocurrent of the avalanche photodiode 10, the fixing device 20 can prevent the avalanche photodiode from shaking and displacing during the assembling and vibrating processes at the light emitting end of the thermal shrinkage bush. Optionally, the avalanche photodiode 10 is fixedly mounted in the card slot 32 using silicon rubber.
Further, the circuit configuration of the light detection assembly is shown in FIG. 4, wherein the avalanche photodiode is of type GT322, having three pins (P, N, G), with the G pin connected to ground; the N pin is grounded through a capacitor C10 and is connected with a high-voltage bias circuit through a resistor R13; the P pin is connected with the signal amplifying circuit. The signal amplification circuit includes: the first-stage amplifying circuit and the second-stage amplifying circuit are connected; the primary amplifying circuit is connected with the photoelectric avalanche diode; and the secondary amplifying circuit is connected with the AD acquisition circuit.
The first-stage amplifying circuit includes: the circuit comprises an amplifier U3A, a resistor R11, a resistor R12, a resistor R15, a resistor R17, a capacitor C9, a capacitor C11 and a capacitor C12; the positive input end of the amplifier U3A is connected with the P pin of the avalanche photodiode through a resistor R15; one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected to an electric connection point between the resistor R15 and the P pin of the avalanche photodiode; one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is connected to an electric connection point between the resistor R15 and the positive input end of the amplifier U3A; one end of the resistor R17 is grounded, and the other end of the resistor R17 is connected to an electric connection point between the resistor R15 and the positive input end of the amplifier U3A; the negative input end of the amplifier U3A is grounded through a resistor R11, and is connected with the output end of the amplifier U3A through a capacitor C9 and a resistor R12 which are connected in parallel; the output end of the amplifier U3A is connected with a two-stage amplifying circuit.
The two-stage amplifying circuit comprises: an amplifier U3B, a resistor R14 and a resistor R16; the positive input end of the amplifier U3B is connected with the first-stage amplifying circuit through a resistor R16, and the negative input end is connected with the output end of the amplifier; the output end of the amplifier U3B is connected with the AD acquisition circuit through a resistor R14.
In this embodiment, the first-stage amplifying circuit is a transimpedance amplifier, and the amplification factor can be modified according to the sampling voltage. The secondary amplifying circuit is used for follow-up amplification, and the stability of voltage can be ensured. Optionally, the amplifier U3A and the amplifier U3B are of type AD823 and are powered by + 5V.
Through comparison tests of the multiple sets of radio frequency optical transmission state online detection devices, test data are shown in the table I.
Table one:
according to the first table, the response current of the leaked optical signals is within the range of 100-360 nA, and the intensity of the leaked optical signals is different due to the optical insertion loss of the optical fiber welding position and the influence of the thermal deformation degree of the heat-shrinkable sleeve, so that the photoelectric currents detected by the photoelectric avalanche diodes are different. Therefore, in the present embodiment, the resistor R17 is a sampling resistor, and when the photocurrent detected by the avalanche photodiode is 100nA, the amplified output voltage is set to 10M Ω to ensure that it is not less than 1V. Namely corresponding to the photocurrent of 100 nA-360 nA, and the voltage of corresponding sampling is 1-3.6V.
The radio frequency light transmission state on-line detection device of the embodiment is tested and verified under the environment of-55 ℃ to +70 ℃, and the test data is shown in table two.
Table two:
as can be seen from the second table, in the on-line detection device for the radio frequency optical transmission state of the present embodiment, the photocurrent response by the avalanche photodiode is substantially unchanged, and therefore, the on-line detection device for the radio frequency optical transmission state of the present embodiment can be used for on-line detection of the radio frequency optical fiber transmission state in an airborne environment.
Example 2
The system for detecting the radio frequency optical transmission state on line provided by this embodiment, as shown in fig. 5, includes two devices for detecting the radio frequency optical transmission state on line as described in embodiment 1; the two on-line detection devices for the radio frequency light transmission state are respectively arranged at the optical fiber fusion joints of the transmitting assembly and the receiving assembly for the radio frequency light transmission; and the health data analysis units of the two radio frequency optical transmission state online detection devices are connected to an upper computer through a network. The upper computer can be a server or a remote PC (personal computer) and the like, and is used for storing the test data detected by the health data analysis unit, namely storing the test data as historical health data, and performing online detection in the later test by comparing the historical data, for example, setting a threshold value for the radio frequency light transmission state according to the requirement, and obtaining the detection result of the radio frequency light transmission state by comparing the detected photocurrent with the threshold value; and for the judgment of historical health data, when the detected photocurrent is smaller and smaller, the trend of performance reduction such as aging of the optical link is shown. Meanwhile, the radio frequency optical transmission state online detection system of the embodiment can detect the optical fiber fusion joints of the transmitting assembly and the receiving assembly at the same time.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A radio frequency optical transmission state online detection method is characterized by comprising the following steps:
step 1, arranging N optical detection assemblies on N radio frequency optical transmission channels, and enabling a photoelectric avalanche diode of each optical detection assembly to be arranged at a light outlet end of a heat-shrinkable sleeve at a fiber fusion joint;
step 2, detecting a leakage optical signal at the light outlet end of the heat-shrinkable sleeve at the optical fiber welding position by the photoelectric avalanche diode, and generating a corresponding photocurrent to input into a signal amplifying circuit;
and 3, the signal amplification circuit acquires corresponding sampling voltage according to the photocurrent, and outputs the sampling voltage to the health data analysis unit through the AD acquisition circuit.
2. An on-line detection device for radio frequency optical transmission state, comprising: n light detection components; the optical detection assembly comprises a high-voltage bias circuit, a photoelectric avalanche diode and a signal amplification circuit which are sequentially connected; the photoelectric avalanche diode is arranged at the light-emitting end of the heat-shrinkable sleeve at the optical fiber fusion joint; the signal amplification circuit is connected to the health data analysis unit through the AD acquisition circuit.
3. The on-line RF optical transmission status detector according to claim 1, further comprising a fixing device; the fixing device comprises N spaced mounting grooves; each mounting groove includes: a channel for placing a heat shrinkable sleeve and a card slot for mounting a photoelectric avalanche diode.
4. The on-line RF light transmission status detector as claimed in claim 1, wherein the avalanche photodiode is fixedly mounted in the card slot by using silicon rubber.
5. The on-line RF optical transmission status detector according to claim 1, wherein the signal amplifier circuit comprises: the first-stage amplifying circuit and the second-stage amplifying circuit are connected; the primary amplifying circuit is connected with the photoelectric avalanche diode; and the secondary amplifying circuit is connected with the AD acquisition circuit.
6. The on-line RF optical transmission status detector according to claim 5, wherein the first stage amplifier circuit comprises: the circuit comprises an amplifier U3A, a resistor R11, a resistor R12, a resistor R15, a resistor R17, a capacitor C9, a capacitor C11 and a capacitor C12; the positive input end of the amplifier U3A is connected with the P pin of the avalanche photodiode through a resistor R15; one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected to an electric connection point between the resistor R15 and the P pin of the avalanche photodiode; one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is connected to an electric connection point between the resistor R15 and the positive input end of the amplifier U3A; one end of the resistor R17 is grounded, and the other end of the resistor R17 is connected to an electric connection point between the resistor R15 and the positive input end of the amplifier U3A; the negative input end of the amplifier U3A is grounded through a resistor R11, and is connected with the output end of the amplifier U3A through a capacitor C9 and a resistor R12 which are connected in parallel; the output end of the amplifier U3A is connected with a two-stage amplifying circuit.
7. The on-line RF optical transmission status detector as claimed in claim 6, wherein the resistor R17 is a sampling resistor set at 10M Ω.
8. The on-line RF optical transmission status detector according to claim 6, wherein the second stage amplifier circuit comprises: an amplifier U3B, a resistor R14 and a resistor R16; the positive input end of the amplifier U3B is connected with the first-stage amplifying circuit through a resistor R16, and the negative input end is connected with the output end of the amplifier; the output end of the amplifier U3B is connected with the AD acquisition circuit through a resistor R14.
9. The on-line RF optical transmission status detecting device of claim 8, wherein the type of the amplifier U3A and the type of the amplifier U3B are AD 823.
10. An on-line detection system for radio frequency optical transmission status, comprising two on-line detection devices for radio frequency optical transmission status according to any one of claims 2 to 9; the two on-line detection devices for the radio frequency light transmission state are respectively arranged at the optical fiber fusion joints of the transmitting assembly and the receiving assembly for the radio frequency light transmission; and the health data analysis units of the two radio frequency optical transmission state online detection devices are connected to an upper computer through a network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525681.6A CN110243575B (en) | 2019-06-18 | 2019-06-18 | Method, device and system for detecting radio frequency optical transmission state on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525681.6A CN110243575B (en) | 2019-06-18 | 2019-06-18 | Method, device and system for detecting radio frequency optical transmission state on line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110243575A CN110243575A (en) | 2019-09-17 |
| CN110243575B true CN110243575B (en) | 2021-09-17 |
Family
ID=67887783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525681.6A Active CN110243575B (en) | 2019-06-18 | 2019-06-18 | Method, device and system for detecting radio frequency optical transmission state on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110243575B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0194236A (en) * | 1987-10-07 | 1989-04-12 | Anritsu Corp | Light pulse tester |
| JP2000258293A (en) * | 1999-03-04 | 2000-09-22 | Sumitomo Electric Ind Ltd | Apparatus for evaluating optical fiber |
| CN202083537U (en) * | 2011-05-05 | 2011-12-21 | 禾普股份有限公司 | Optical fiber detection device |
| CN104125014B (en) * | 2013-04-28 | 2018-11-23 | 上海华魏光纤传感技术有限公司 | Safety-type lightguide cable link operating system |
| CN106092520B (en) * | 2016-08-02 | 2018-08-31 | 中国电子科技集团公司第三十八研究所 | The measuring device and method of Distributed Feedback Laser frequency noise |
| CN207853158U (en) * | 2018-02-09 | 2018-09-11 | 无锡源清瑞光激光科技有限公司 | Optical fiber laser energy monitoring device based on integrating sphere |
-
2019
- 2019-06-18 CN CN201910525681.6A patent/CN110243575B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110243575A (en) | 2019-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7088880B1 (en) | Optical fiber coupling and inline fault monitor device and method | |
| CN107171722B (en) | Method and device for monitoring receiving optical power of optical module and terminal | |
| CN211656146U (en) | ROSA performance test system | |
| US9880069B1 (en) | Optical fiber test apparatus with combined light measurement and fault detection | |
| CN109905174A (en) | A kind of optical module and the active coupled system of optical module light and method | |
| CN110849476A (en) | High-precision broadband balance photoelectric detection method and device | |
| CN110243575B (en) | Method, device and system for detecting radio frequency optical transmission state on line | |
| CN106289516A (en) | The control method of a kind of optical module received optical power detection and device thereof | |
| CN102752623A (en) | Signal testing device | |
| CN109444590A (en) | MEMS device detection circuit and method | |
| US8103164B2 (en) | High frequency noise measurement board | |
| CN109752684B (en) | Photoelectric module reverse testing method and fault diagnosis and judgment method | |
| CN104935376A (en) | Optical power measuring device | |
| US7129689B2 (en) | True RMS converter board | |
| CN113589129B (en) | Measuring device and measuring method for C-V curve of avalanche photodiode | |
| CN103091568A (en) | Avalanche photodiode excessive noise factor measuring system | |
| CN102135583A (en) | Automatic detecting device for detecting short circuit unusualness of internal circuit and shell of optical module | |
| CN209310835U (en) | A kind of detection device of optical sensor | |
| CN113162683B (en) | Airborne FC communication link fault detection method | |
| CN204389637U (en) | Driven high voltage direct current insulation detecting circuit | |
| CN203422158U (en) | Laser light power detection circuit | |
| CN208424363U (en) | FTTx terminated line tester | |
| CN107884158B (en) | Extinction ratio testing device | |
| CN114650094A (en) | Device and system for monitoring error rate of detector | |
| CN117233457B (en) | Method and equipment for testing high-speed modulation current of laser |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |