CN115483982B - Analog optical link input signal measuring method and device - Google Patents
Analog optical link input signal measuring method and device Download PDFInfo
- Publication number
- CN115483982B CN115483982B CN202211056743.1A CN202211056743A CN115483982B CN 115483982 B CN115483982 B CN 115483982B CN 202211056743 A CN202211056743 A CN 202211056743A CN 115483982 B CN115483982 B CN 115483982B
- Authority
- CN
- China
- Prior art keywords
- signal
- optical
- conversion module
- analog
- input
- 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 139
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 128
- 239000013307 optical fiber Substances 0.000 claims abstract description 33
- 239000004065 semiconductor Substances 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000008358 core component Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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
- H04B10/70—Photonic quantum communication
-
- 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
-
- 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
-
- 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
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0775—Performance monitoring and measurement of transmission parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention provides a method and a device for measuring an input signal of an analog optical link, which are used for solving the technical problem that the efficiency of the analog optical link cannot be calibrated at a far end under an extreme condition so as to obtain the size of the analog input signal. The measuring method comprises the following steps: transmitting the sent first control command signal to the far end at the near end through an electro-optical conversion optical fiber, and after the first control command signal is restored to an electric signal, controlling the input end of the analog optical link to be connected with one path of calibration square wave signal, and outputting the restored calibration square wave signal by the analog optical link; obtaining link gain through the restored calibration square wave signal and the input calibration square wave signal; transmitting the second control command signal to the far end at the near end through the electro-optical conversion optical fiber, and after the second control command signal is restored to an electric signal, controlling the input end of the analog optical link to be connected with an external analog input signal, and outputting the restored external analog input signal by the analog optical link; the external analog input signal is obtained by the restored external analog input signal and the link gain.
Description
Technical Field
The present invention relates to analog optical links, and more particularly, to a method and an apparatus for measuring an input signal of an analog optical link.
Background
The microwave photon technology is a technology for generating, transmitting and processing microwave/radio frequency signals by utilizing an optical method, and a brand new solution idea is developed for microwave signal processing and analysis. The analog optical link is the core research content of the microwave photon technology, and has the advantages of low noise, low transmission loss, high working bandwidth, large dynamic range and the like. The analog optical link brings the light and flexible system while avoiding various electronic bottlenecks and electromagnetic interference, and has important application value in the fields of optical carrier wireless technology (RoF), photo-generated millimeter wave technology, particle physical experiment and the like.
The semiconductor laser has the advantages of small volume, light weight, high bandwidth, high power conversion efficiency and the like, and is a core photoelectric device for realizing electro-optic conversion in an analog optical link. However, the output optical power of the semiconductor laser varies greatly with temperature, thereby causing a change in the efficiency of the analog optical link. In addition, the efficiency of the analog optical link may be changed by plugging in and out the optical fiber connector, bending and extruding the optical fiber, and the like. The change in the efficiency of the analog optical link may result in an inability to accurately obtain the analog input signal size, and although the analog input signal shape can be obtained, an absolute measurement of the analog input signal cannot be achieved.
At present, the analog optical link efficiency can be calibrated at the far end so as to obtain the analog input signal size, but in extreme cases, an operator cannot reach the far end, so that the analog input signal size cannot be obtained by calibrating the analog optical link efficiency at the far end.
Disclosure of Invention
The invention aims to solve the technical problem that in extreme cases, operators are difficult to reach a far end, so that the efficiency of an analog optical link cannot be calibrated at the far end to obtain the size of an analog input signal, and provides an analog optical link input signal measuring method and device.
In order to achieve the above object, the technical solution provided by the present invention is:
The analog optical link comprises a first electro-optical conversion module arranged at a far end and a first photoelectric conversion module arranged at a near end, wherein the input end of the first electro-optical conversion module is connected with an external analog input signal, and the analog optical link is characterized by comprising the following steps:
The method comprises the steps that 1, a first control command signal is sent out at the near end of an analog optical link through manual operation, the first control command signal is converted into a corresponding optical signal by an electric signal and then is transmitted to the far end of the analog optical link through an optical fiber, and the received optical signal is restored to the first control command signal by the far end of the analog optical link;
The input end of the analog optical link is controlled by the first control command signal to disconnect an external analog input signal, one path of calibration square wave signal is connected, the input calibration square wave signal is converted into a corresponding optical signal through the first electro-optical conversion module, then the optical signal is transmitted to the first photoelectric conversion module through an optical fiber, and the first photoelectric conversion module restores the received optical signal into the calibration square wave signal;
obtaining a link gain a through the restored calibration square wave signal and the input calibration square wave signal, and completing the efficiency calibration of the analog optical link;
the near end of the analog optical link sends out a second control command signal through manual operation, the second control command signal is converted into a corresponding optical signal by an electric signal and then is transmitted to the far end of the analog optical link by an optical fiber, and the received optical signal is restored to the second control command signal by the far end;
The second control command signal controls the input end of the analog optical link to disconnect the calibrated square wave signal, the external analog input signal is connected, the external analog input signal converts an electric signal into a corresponding optical signal through the first photoelectric conversion module and then transmits the corresponding optical signal to the first photoelectric conversion module through the optical fiber, and the first photoelectric conversion module restores the received optical signal into an electric signal and then outputs the electric signal as an output signal;
And 4, obtaining an external analog input signal through the output signal and the link gain a obtained in the step 2, and completing measurement of the external analog input signal of the analog optical link.
The invention also provides a device for measuring the input signal of the analog optical link, which is used for realizing the method for measuring the input signal of the analog optical link, and is characterized in that:
The device comprises a first photoelectric conversion module, a real-time calibration transmitting module, a second photoelectric conversion module, a first photoelectric conversion module, a second photoelectric conversion module and a real-time calibration receiving module, wherein the first photoelectric conversion module is positioned at a near end;
the first photoelectric conversion module is connected with the first photoelectric conversion module through an optical fiber and is used for realizing remote transmission of external analog input signals;
The second photoelectric conversion module is connected with the second photoelectric conversion module through an optical fiber and is used for realizing remote transmission of control command signals;
The input end of the real-time calibration transmitting module is used for receiving an input control instruction, and the real-time calibration transmitting module is used for transmitting a control instruction signal to the real-time calibration receiving module for control;
the real-time calibration receiving module is arranged between an external analog input signal and the first electro-optical conversion module and is used for switching the input of the first electro-optical conversion module according to the received control command signal, so that the input end of the first electro-optical conversion module is connected with a calibration square wave signal in the real-time calibration receiving module and is used for realizing the efficiency calibration of the analog optical link, or the input end of the first electro-optical conversion module is connected with the external analog input signal and is used for realizing the measurement of the external analog input signal of the analog optical link.
Further, the real-time calibration transmitting module comprises a dial switch and a first singlechip;
the input end of the dial switch is used for receiving an input control instruction, the output end of the dial switch is connected with the first singlechip, and the output end of the first singlechip is connected with the second electro-optical conversion module and is used for converting an emitted control instruction signal into an optical signal from an electric signal.
Further, the real-time calibration receiving module comprises a relay, a second singlechip and a square wave source;
The output end of the second photoelectric conversion module is connected with the input end of the second singlechip, the output end of the second singlechip is connected with a control pin of the relay, and the second singlechip controls the relay to act through a restored control instruction signal; the first input end of the relay is used for being connected with an external analog input signal, the second input end of the relay is connected with the output end of the square wave source, and the square wave source outputs a calibrated square wave signal; the output end of the relay is connected with the input end of the first electro-optical conversion module.
Further, the second electro-optical conversion module comprises a semiconductor laser and a laser driving circuit;
The laser driving circuit comprises an addition circuit formed by an operational amplifier, and is used for superposing a first singlechip output signal and a semiconductor laser threshold voltage and inputting the superposed electric signal into the semiconductor laser;
The semiconductor laser is used for converting the received electric signals into optical signals and outputting the optical signals.
Further, the second photoelectric conversion module comprises a PIN photoelectric detector and a transimpedance amplifier;
The PIN photoelectric detector is used for converting the received optical signals into electric signals and outputting the electric signals;
And the transimpedance amplifier is used for converting the weak current signal output by the PIN photoelectric detector into a large-amplitude voltage signal and sending the large-amplitude voltage signal to the second singlechip.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the method for measuring the input signal of the analog optical link, provided by the invention, the control command signal is input at the near end, one path of calibration square wave signal is introduced into the input end of the analog optical link, and the calibration square wave signal with known amplitude is connected with the analog optical link, so that the link efficiency calibration is realized, the link gain is obtained, and the accurate analog input signal size is further obtained.
2. The invention provides an analog optical link input signal measuring device, wherein a real-time calibration transmitting module and a second photoelectric conversion module are arranged at a near end, a real-time calibration receiving module and a second photoelectric conversion module are arranged at a far end, a control command signal optical fiber transmitted by the near-end real-time calibration transmitting module is transmitted to the far-end real-time calibration receiving module, a calibration square wave signal is input at an analog optical link input end of the far end, the link efficiency calibration is realized through the calibration square wave signal with known amplitude, the link gain is obtained, and then the analog input signal size is obtained, and the absolute measurement of the analog input signal is realized through the near end under the extreme condition of the near end.
Drawings
FIG. 1 is a schematic diagram of a conventional analog optical link;
FIG. 2 is a schematic diagram of an embodiment of an analog optical link input signal measurement device according to the present invention;
FIG. 3 is a schematic diagram of a real-time calibration transmitting module according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a real-time calibration receiving module according to an embodiment of the present invention.
Specific reference numerals are as follows:
1-a first electro-optic conversion module; 2-a first photoelectric conversion module;
3-real-time calibration transmitting module, 31-dial switch, 32-first singlechip;
4-a real-time calibration receiving module, 41-a relay, 42-a second singlechip and 43-a square wave source;
5-a second electro-optic conversion module; and 6-a second photoelectric conversion module.
Detailed Description
To further clarify the advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The existing analog optical link structure is shown in fig. 1, and comprises a first electro-optical conversion module 1 arranged at a far end and a first photoelectric conversion module 2 arranged at a near end, wherein the first electro-optical conversion module 1 is connected with the first photoelectric conversion module 2 through an optical fiber, an input end of the first electro-optical conversion module 1 is connected with an external analog input signal, and an output end of the first photoelectric conversion module 2 is used for outputting an electric signal. The invention provides the following specific efficiency calibration and analog input signal measurement methods, which aim to solve the problem that an operator cannot reach a far end to calibrate the efficiency of an analog optical link so as to obtain the size of an analog input signal under extreme conditions.
The method for measuring the input signal of the analog optical link specifically comprises the following steps:
The method comprises the steps that 1, a first control command signal is sent out at the near end of an analog optical link through manual operation, the first control command signal is converted into a corresponding optical signal by an electric signal and then is transmitted to the far end of the analog optical link through an optical fiber, and the received optical signal is restored to the first control command signal by the far end of the analog optical link;
The input end of the analog optical link is controlled by the first control command signal to disconnect an external analog input signal, one path of calibration square wave signal is connected, the input calibration square wave signal is converted into a corresponding optical signal through the first electro-optical conversion module 1 and then transmitted to the first photoelectric conversion module 2 through an optical fiber, and the first photoelectric conversion module 2 restores the received optical signal into the calibration square wave signal to be output;
obtaining a link gain a through the restored calibration square wave signal and the input calibration square wave signal, and completing primary efficiency calibration of the analog optical link;
the near end of the analog optical link sends out a second control command signal through manual operation, the second control command signal is converted into a corresponding optical signal by an electric signal and then is transmitted to the far end of the analog optical link by an optical fiber, and the received optical signal is restored to the second control command signal by the far end;
The second control command signal controls the input end of the analog optical link to disconnect the calibration square wave signal, the external analog input signal is connected, the external analog input signal converts an electric signal into a corresponding optical signal through the first electro-optical conversion module 1 and then is transmitted to the first photoelectric conversion module 2 through an optical fiber, and the first photoelectric conversion module 2 restores the received optical signal into the electric signal and then outputs the electric signal as an output signal;
And 4, obtaining an external analog input signal through the output signal and the link gain a obtained in the step 2, and completing measurement of the external analog input signal of the analog optical link.
In order to realize the method for measuring the input signal of the analog optical link, the invention also provides a device for measuring the input signal of the analog optical link.
As shown in fig. 2, an analog optical link input signal measuring device includes a first photoelectric conversion module 2 at a near end, a real-time calibration transmitting module 3 and a second photoelectric conversion module 5 which are sequentially connected, and a first photoelectric conversion module 1 at a far end, a second photoelectric conversion module 6 and a real-time calibration receiving module 4 which are sequentially connected. The optical fiber connection between the first photoelectric conversion module 1 arranged at the far end and the first photoelectric conversion module 2 arranged at the near end forms an existing analog optical link and is used for realizing the remote transmission of external analog input signals or calibrated square wave signals; the first electro-optical conversion module 1 and the first photoelectric conversion module 2 both adopt the electro-optical conversion module and the photoelectric conversion module disclosed in the existing analog optical link. As shown in fig. 3, the real-time calibration transmitting module 3 in this embodiment is configured to transmit a control command signal to the real-time calibration receiving module 4 for control, and includes a dial switch 31 and a first single-chip microcomputer 32. As shown in fig. 4, the real-time calibration receiving module 4 in this embodiment is disposed between an external analog input signal and the first electro-optical conversion module 1, and is configured to switch the input of the first electro-optical conversion module 1 according to a received control command signal, so that the input end of the first electro-optical conversion module 1 is connected to a calibration square wave signal inside the real-time calibration receiving module 4, and is used for implementing the efficiency calibration of the analog optical link, or the input end of the first electro-optical conversion module 1 is connected to the external analog input signal, and is used for implementing the measurement of the external analog input signal of the analog optical link. The real-time calibration receiving module 4 comprises a relay 41, a second singlechip 42 and a square wave source 43; the square wave source 43 is a programmable waveform generator chip AD9833, and other devices may be used to generate the calibration square wave signal in other embodiments. The second electro-optical conversion module 5 is configured to convert an output signal of the first singlechip 32 from an electrical signal to an optical signal, and in this embodiment, includes a semiconductor laser and a laser driving circuit; the core component of the laser driving circuit is an addition circuit formed by an operational amplifier, and is used for superposing the output signal of the first singlechip 32 with the threshold voltage of the semiconductor laser and inputting the superposed electric signal into the semiconductor laser; the semiconductor laser is a core photoelectric device for realizing photoelectric conversion, and is used for converting a received electric signal into an optical signal and outputting the optical signal. The second photoelectric conversion module 6 is configured to restore an optical signal transmitted by the second photoelectric conversion module 5 through an optical fiber into an electrical signal, where the electrical signal includes a PIN photodetector and a transimpedance amplifier; the PIN photoelectric detector is a core photoelectric device for realizing photoelectric conversion and is used for converting a received optical signal into an electric signal and outputting the electric signal; the core component of the transimpedance amplifier is a high-speed operational amplifier chip, and is used for converting weak current signals output by the PIN photoelectric detector into large-amplitude voltage signals and sending the large-amplitude voltage signals to the second singlechip 42.
The specific connection relation and principle are as follows:
The input end of the dial switch 31 is used for receiving a manually input control instruction, the output end of the dial switch is connected with the input end of the first singlechip 32, the output end of the first singlechip 32 is connected with the input end of the second electro-optical conversion module 5, and the dial switch is used for transmitting the control instruction to the second electro-optical conversion module 5 through the first singlechip 32 to perform electro-optical conversion, and the control instruction is converted into an optical signal by an electric signal; the second photoelectric conversion module 5 is connected with the second photoelectric conversion module 6 through an optical fiber, and is used for transmitting the converted optical signal to the second photoelectric conversion module 6 through the optical fiber to perform photoelectric conversion to obtain a restored electric signal, so that the remote transmission of the control command signal is realized; the output end of the second photoelectric conversion module 6 is connected with the input end of the second singlechip 42, and the output end of the second singlechip 42 is connected with a control pin of the relay 41, so that the second singlechip 42 receives a control instruction signal and controls the input end of the relay 41 to switch through the control instruction signal; the relay 41 is disposed between the external analog input signal and the first electro-optical conversion module 1, and is configured to switch the input of the first electro-optical conversion module 1 according to the control command signal transmitted by the second singlechip 42, so that the input end of the first electro-optical conversion module 1 is connected to the output end of the square wave source 43, and the receiving party receives the calibrated square wave signal provided by the square wave source 43, or the input end of the first electro-optical conversion module 1 is connected to the external analog input signal, and receives the external analog input signal; the output end of the relay 41 is connected with the input end of the first photoelectric conversion module 1, the output end of the first photoelectric conversion module 1 is connected with the input end of the first photoelectric conversion module 2 through an optical fiber, and the optical fiber is used for converting an electric signal output by the relay 41 into an optical signal, then the optical signal is transmitted to the first photoelectric conversion module 2 for photoelectric conversion, and the output end of the first photoelectric conversion module 2 is used for obtaining a restored electric signal; and (3) realizing the efficiency calibration of the analog optical link through the restored calibration square wave signal, and realizing the measurement of the external analog input signal of the analog optical link through the restored external analog input signal.
The specific measuring method for the analog optical link input signal measuring device comprises the following steps:
The first singlechip 32 is controlled to send a first control command signal by manually operating the dial switch 31 at the near end, the first control command signal is converted into a corresponding optical signal by an electric signal through the second electro-optical conversion module 5, and the converted optical signal is transmitted to the second photoelectric conversion module 6 through an optical fiber for photoelectric conversion, so that the first control command signal restored to the electric signal is obtained;
The first control instruction signal is input into the second singlechip 42, the second singlechip 42 controls the relay 41 to be connected with the second input end of the square wave source 43, the first input end connected with an external analog input signal is disconnected, at the moment, a calibration square wave signal sent by the square wave source 43 is sent into the first electro-optical conversion module 1 through the relay 41, the calibration square wave signal is converted into a corresponding optical signal by an electric signal, the optical signal is transmitted to the first photoelectric conversion module 2 through an optical fiber for photoelectric conversion, a reduced calibration square wave signal is obtained, and the reduced calibration square wave signal is output as an output signal;
And 2, marking a calibrated square wave signal output by a square wave source as m, marking the calibrated square wave signal restored by the first photoelectric conversion module 2 as m', and obtaining a link gain a as follows: a=m'/m; completing primary efficiency calibration of the analog optical link;
Thirdly, the first singlechip 32 is controlled to send a second control instruction signal through manual operation of the dial switch 31 at the near end, the second control instruction signal is converted into a corresponding optical signal through the second electro-optical conversion module 5, and the converted optical signal is transmitted to the second photoelectric conversion module 6 through an optical fiber to be subjected to photoelectric conversion, so that a second control instruction signal restored into an electric signal is obtained;
The second control instruction signal is input into the second singlechip 42, the first input end of the relay 41 connected with an external analog input signal is controlled by the second singlechip 42 to be connected, the second input end connected with the square wave source 43 is disconnected, at the moment, the external analog input signal is sent into the first electro-optical conversion module 1 through the relay 41, the external analog input signal is converted into a corresponding optical signal by an electric signal, the converted optical signal is transmitted to the first photoelectric conversion module 2 through an optical fiber to be subjected to photoelectric conversion, a restored analog input signal is obtained, and the restored analog input signal is output as an output signal;
the external analog input signal is marked as n, the external analog input signal restored by the first photoelectric conversion module 2 is marked as n', and the original input signal n is obtained through the link gain a obtained in the step 2:
n＝n′*m/m′。
The foregoing description is only for the purpose of illustrating the technical solution of the present invention, but not for the purpose of limiting the same, and it will be apparent to those of ordinary skill in the art that modifications may be made to the specific technical solution described in the foregoing embodiments, or equivalents may be substituted for parts of the technical features thereof, without departing from the spirit of the technical solution of the present invention.
Claims (6)
1. An analog optical link input signal measuring method, the analog optical link includes the first electro-optic conversion module (1) set up in the far-end and first photoelectric conversion module (2) set up in the near-end, the optical fiber connection between first electro-optic conversion module (1) and first photoelectric conversion module (2), the input end of the first electro-optic conversion module (1) connects the external analog input signal, characterized by, comprising the following steps:
The method comprises the steps that 1, a first control command signal is sent out at the near end of an analog optical link through manual operation, the first control command signal is converted into a corresponding optical signal by an electric signal and then is transmitted to the far end of the analog optical link through an optical fiber, and the received optical signal is restored to the first control command signal by the far end of the analog optical link;
The input end of the analog optical link is controlled by a first control command signal to disconnect an external analog input signal, one path of calibration square wave signal is connected, the input calibration square wave signal is converted into a corresponding optical signal through a first electro-optical conversion module (1), then the corresponding optical signal is transmitted to a first photoelectric conversion module (2) through an optical fiber, and the first photoelectric conversion module (2) restores the received optical signal into the calibration square wave signal;
obtaining a link gain a through the restored calibration square wave signal and the input calibration square wave signal, and completing the efficiency calibration of the analog optical link;
the near end of the analog optical link sends out a second control command signal through manual operation, the second control command signal is converted into a corresponding optical signal by an electric signal and then is transmitted to the far end of the analog optical link by an optical fiber, and the received optical signal is restored to the second control command signal by the far end;
The second control command signal controls the input end of the analog optical link to disconnect the calibration square wave signal, the external analog input signal is connected, the external analog input signal converts the electric signal into a corresponding optical signal through the first electro-optical conversion module (1), the corresponding optical signal is transmitted to the first photoelectric conversion module (2) through an optical fiber, and the first photoelectric conversion module (2) restores the received optical signal into the electric signal and outputs the electric signal as an output signal;
And 4, obtaining an external analog input signal through the output signal and the link gain a obtained in the step 2, and completing measurement of the external analog input signal of the analog optical link.
2. An analog optical link input signal measuring apparatus for implementing an analog optical link input signal measuring method as defined in claim 1, characterized in that:
the device comprises a first photoelectric conversion module (2) positioned at a near end, a real-time calibration transmitting module (3) and a second photoelectric conversion module (5) which are sequentially connected, and a first photoelectric conversion module (1) positioned at a far end, a second photoelectric conversion module (6) and a real-time calibration receiving module (4) which are sequentially connected;
The first photoelectric conversion module (1) is connected with the first photoelectric conversion module (2) through an optical fiber;
the second photoelectric conversion module (5) is connected with the second photoelectric conversion module (6) through an optical fiber;
The input end of the real-time calibration transmitting module (3) is used for receiving an input control instruction, and the real-time calibration transmitting module (3) is used for transmitting a control instruction signal to the real-time calibration receiving module (4) for control;
The real-time calibration receiving module (4) is arranged between an external analog input signal and the first electro-optical conversion module (1) and is used for switching the input of the first electro-optical conversion module (1) according to a received control command signal, so that the input end of the first electro-optical conversion module (1) is connected with a calibration square wave signal in the real-time calibration receiving module (4) and is used for realizing the efficiency calibration of an analog optical link, or the input end of the first electro-optical conversion module (1) is connected with the external analog input signal and is used for realizing the measurement of the external analog input signal of the analog optical link.
3. An analog optical link input signal measurement device according to claim 2, wherein:
the real-time calibration transmitting module (3) comprises a dial switch (31) and a first singlechip (32);
the input end of the dial switch (31) is used for receiving an input control instruction, the output end of the dial switch is connected with the first singlechip (32), and the output end of the first singlechip (32) is connected with the second electro-optical conversion module (5).
4. An analog optical link input signal measuring device according to claim 3, wherein:
The real-time calibration receiving module (4) comprises a relay (41), a second singlechip (42) and a square wave source (43);
The output end of the second photoelectric conversion module (6) is connected with the input end of the second singlechip (42), and the output end of the second singlechip (42) is connected with a control pin of the relay (41); the first input end of the relay (41) is used for being connected with an external analog input signal, the second input end of the relay is connected with the output end of the Fang Boyuan (43), and the square wave source (43) outputs a calibrated square wave signal; the output end of the relay (41) is connected with the input end of the first electro-optical conversion module (1).
5. An analog optical link input signal measurement device according to claim 4, wherein:
The second electro-optical conversion module (5) comprises a semiconductor laser and a laser driving circuit;
The laser driving circuit comprises an addition circuit formed by an operational amplifier, and is used for superposing an output signal of the first singlechip (32) and the threshold voltage of the semiconductor laser and inputting the superposed electric signal into the semiconductor laser;
The semiconductor laser is used for converting the received electric signals into optical signals and outputting the optical signals.
6. An analog optical link input signal measurement device according to claim 5, wherein:
The second photoelectric conversion module (6) comprises a PIN photoelectric detector and a transimpedance amplifier;
The PIN photoelectric detector is used for converting the received optical signals into electric signals and outputting the electric signals;
The transimpedance amplifier is used for converting a weak current signal output by the PIN photoelectric detector into a large-amplitude voltage signal and sending the large-amplitude voltage signal to the second singlechip (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211056743.1A CN115483982B (en) | 2022-08-30 | 2022-08-30 | Analog optical link input signal measuring method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211056743.1A CN115483982B (en) | 2022-08-30 | 2022-08-30 | Analog optical link input signal measuring method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115483982A CN115483982A (en) | 2022-12-16 |
| CN115483982B true CN115483982B (en) | 2024-06-21 |
Family
ID=84421971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211056743.1A Active CN115483982B (en) | 2022-08-30 | 2022-08-30 | Analog optical link input signal measuring method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115483982B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379141A (en) * | 2018-11-21 | 2019-02-22 | 广州飞瑞敖电子科技股份有限公司 | A kind of time division duplex light-carried wireless Transmission system |
| CN215581185U (en) * | 2021-09-01 | 2022-01-18 | 吴通光电智联科技(武汉)有限公司 | OAM (operation administration and maintenance) implementation circuit of multi-carrier amplitude modulation scheme |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020012495A1 (en) * | 2000-06-29 | 2002-01-31 | Hiroyuki Sasai | Optical transmission system for radio access and high frequency optical transmitter |
| EP2156578A4 (en) * | 2007-06-11 | 2016-07-13 | Invopto Ab | Optical link |
| CN108768532B (en) * | 2018-06-04 | 2019-11-05 | 中国电子科技集团公司第四十一研究所 | A kind of linear FM signal terminates Frequency point device for fast detecting and method |
| CN114696904B (en) * | 2020-12-31 | 2023-07-25 | 中国科学院半导体研究所 | Microwave photon i Xin Ji |
| CN217085537U (en) * | 2021-11-27 | 2022-07-29 | 西安电子工程研究所 | Portable microwave system measurement and control platform |
| CN114900230A (en) * | 2022-04-25 | 2022-08-12 | 贵州电网有限责任公司 | Modeling method for digitization of all-optical link |
-
2022
- 2022-08-30 CN CN202211056743.1A patent/CN115483982B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379141A (en) * | 2018-11-21 | 2019-02-22 | 广州飞瑞敖电子科技股份有限公司 | A kind of time division duplex light-carried wireless Transmission system |
| CN215581185U (en) * | 2021-09-01 | 2022-01-18 | 吴通光电智联科技(武汉)有限公司 | OAM (operation administration and maintenance) implementation circuit of multi-carrier amplitude modulation scheme |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115483982A (en) | 2022-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110780398A (en) | Direct-adjusting analog electro-optical conversion integrated assembly | |
| CN104122427B (en) | Analogue electric signal transmission method applied to current transformer | |
| WO2016033266A1 (en) | Feedback for electronic pre-distortion in an optical transmitter | |
| CN115483982B (en) | Analog optical link input signal measuring method and device | |
| CN106788756A (en) | Ultra wide band Larger Dynamic frequency conversion channel based on Microwave photonics | |
| CN112491466B (en) | Light intensity modulation radio frequency signal phase consistency measuring device and measuring method | |
| TWI501570B (en) | Optical Signal Conversion Device And Method Using Period-One Nonlinear Dynamics Of Semiconductor Lasers | |
| CN109861645A (en) | A kind of frequency multiplier for microwave broadband communication | |
| CN202050415U (en) | Optical fiber direct isolation transmission system for analogue signal in fusion device | |
| CN207853905U (en) | A kind of six frequency-doubling millimeter wave generators based on series connection electro-optic intensity modulator | |
| CN108519167B (en) | Wireless photonic temperature sensing systems and methods | |
| CN113608227B (en) | Photon-assisted radar mixing and direct wave self-interference cancellation integrated device and method | |
| CN216356481U (en) | Primary and secondary isolation circuit and power supply system | |
| CN112311463B (en) | Optical transceiver circuit and optical transceiver device | |
| CN102244546B (en) | Communication system capable of eliminating non-linear influence of optical fiber in analogue optical communication | |
| CN112910564B (en) | High-speed receiving circuit and high-speed transmitting-receiving circuit | |
| CN206559367U (en) | A kind of simulator based on optical-fiber time-delay | |
| CN112260761B (en) | Quadruple frequency up-conversion method based on cascaded modulator filter-free | |
| CN106506071A (en) | A kind of MZM modulator working point control method and device | |
| CN219351706U (en) | Photoelectric isolation transmission circuit for high-potential platform analog signals | |
| CN219416441U (en) | Output power calibration device of high-power microwave radiation source | |
| CN113890618B (en) | Receiving and transmitting integrated device and method based on photon time compression and stretching | |
| CN112118054B (en) | Single-fiber laser power supply equipment and communication method thereof | |
| CN109309334A (en) | Based on warbled optical-electronic oscillator and control method | |
| CN112763083B (en) | Picosecond-level pulse generator waveform parameter measuring device and method |
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 |