CN115567112A - Optical fiber signal transmission system based on multi-pass amplification - Google Patents
Optical fiber signal transmission system based on multi-pass amplification Download PDFInfo
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- CN115567112A CN115567112A CN202211120167.2A CN202211120167A CN115567112A CN 115567112 A CN115567112 A CN 115567112A CN 202211120167 A CN202211120167 A CN 202211120167A CN 115567112 A CN115567112 A CN 115567112A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides an optical fiber signal transmission system based on multi-pass amplification, which comprises an input end amplification module, a transmission detection module, a plurality of relay amplification modules and an output supplement module, wherein the input end amplification module is used for amplifying optical signals; the input end amplification module is arranged at the input end of the transmission line and is used for detecting the optical signal input by the input end and then amplifying the optical signal input by the input end and transmitting the amplified optical signal; the transmission detection module is used for detecting parameters of a transmission line; the invention carries out sectional processing on the transmission of optical signals by integrating various influence factors on the transmission line so as to solve the problems of poor amplification calculation effect and large error of output compensation in the existing optical fiber signal transmission process.
Description
Technical Field
The invention relates to the technical field of signal transmission, in particular to an optical fiber signal transmission system based on multi-pass amplification.
Background
Optical fiber transmission, that is, data and signal transmission using optical fiber as a medium. The optical fiber can be used for transmitting analog signals and digital signals, and can meet the requirements of video transmission. Optical fiber transmission is generally carried out by using an optical cable, the data transmission rate of a single optical fiber can reach several Gbps, and the transmission distance can reach several tens kilometers under the condition of not using a repeater. The optical amplification technology is to realize population inversion (except for a nonlinear optical fiber amplifier) under the action of pumping energy (electricity or light), and then realize the amplification of incident light through stimulated radiation.
In the prior art, in the transmission process of the existing optical signal, the amplification process is only amplified through a preset amplification ratio, but the original amplification method has a certain error for the final output result, the optical signal is influenced by many factors in the transmission process, the amplification technical scheme of the existing optical signal transmission is simple, the error of amplification output is large, and the method is not suitable for the field with high requirement on the transmission precision of the optical fiber signal.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an optical fiber signal transmission system based on multi-pass amplification, which carries out sectional processing on the transmission of an optical signal by integrating various influence factors on a transmission line so as to solve the problems of poor amplification calculation effect and large output compensation error in the existing optical fiber signal transmission process.
In order to achieve the purpose, the invention is realized by the following technical scheme: an optical fiber signal transmission system based on multi-pass amplification comprises an input end amplification module, a transmission detection module, a plurality of relay amplification modules and an output supplement module;
the input end amplification module is arranged at the input end of the transmission line and is used for detecting the optical signal input by the input end and then amplifying the optical signal input by the input end and transmitting the amplified optical signal;
the transmission detection module is used for detecting parameters of a transmission line;
the relay amplification modules are respectively arranged between the input end and the output end of the transmission line, and are used for detecting optical signals in the transmission process and then amplifying the optical signals in the transmission process and then transmitting the amplified optical signals;
the output supplement module is arranged at the output end of the transmission line and used for detecting the optical signal output by the output end, processing the optical signal according to the detection result of the output signal of the output end and performing supplement amplification on the output signal of the output end.
Further, the input terminal amplification module is configured with an input terminal amplification strategy, and the input terminal amplification strategy includes: processing an input optical signal to obtain a decibel value of the input optical signal;
then obtaining the distance between the input end and the next relay amplification module, setting the distance as a first distance, and substituting the decibel value of the input signal and the first distance into an input amplification formula to obtain an input amplification value;
and amplifying the signal input by the input end according to the input amplification value, and transmitting the amplified signal.
Further, the input amplification formula is configured to:
(ii) a Wherein, DB sf For inputting amplified values, DB sr S1 is a decibel value of the input optical signal, S1 is a first distance, d1 is an amplification conversion coefficient of the input optical signal, and S1 is an amplification conversion index of the first distance.
Further, the transmission detection module is configured with a transmission detection policy, the transmission detection policy comprising: detecting the optical signal after the first distance transmission to obtain a decibel value of the optical signal at the tail end of the first distance;
then, the circuit core diameter of the transmission line is obtained, and the decibel value of the optical signal at the end of the first distance, the circuit core diameter, the first distance and the decibel value of the input optical signal are substituted into a circuit loss coefficient formula to obtain a transmission loss coefficient.
Further, the loss factor equation is configured to:
(ii) a Wherein Xcs is the transmission loss coefficient, DB s1m And the decibel value of the optical signal at the end of the first distance is Rxl, the core diameter of the line is Rxl, and x1 is a loss compensation value.
Further, the relay amplification module is configured with a relay amplification strategy, and the relay amplification strategy includes: acquiring the distance between the current relay amplifying module and the next relay amplifying module, acquiring the distance between the last group of relay amplifying modules and the output end, and setting the two distances as the mutual relay distance;
obtaining the decibel value of the optical signal detected by each group of relay amplification modules, setting the decibel value as a relay decibel value, and substituting the relay decibel value, the relay mutual distance and the transmission loss coefficient into a relay amplification formula to obtain a relay amplification value;
and amplifying the optical signal according to the relay amplification value and then transmitting the optical signal.
Further, the relay amplification formula is configured to:
(ii) a Wherein, DB zf For relaying amplified values, DB zj D2 is a relay amplification compensation value.
Further, the output supplement module is configured with an output supplement policy, the output supplement policy comprising: firstly, acquiring a decibel value of an optical signal at an output end, and setting the decibel value as an output decibel value; then obtaining the distance between the input end and the output end, and setting the distance as a transmission distance; then acquiring the number of the relay amplification modules;
substituting the decibel value, the transmission distance, the number of the relay amplification modules and the transmission loss coefficient of the input optical signal into an output amplification formula to obtain an output amplification coefficient;
and multiplying the output decibel value by the output amplification coefficient to obtain an output amplification result.
Further, the output amplification formula is configured to:
(ii) a Wherein, X sc For outputting the amplification factor, scs is the transmission distance, and Psl is the number of the relay amplification modules.
The invention has the beneficial effects that: the input end amplification module is arranged at the input end of the transmission line, the optical signal input by the input end can be detected through the input end amplification module, then the optical signal input by the input end is amplified and transmitted, and the parameters of the transmission line can be detected through the transmission detection module; the optical signal processing method comprises the steps of arranging a plurality of relay amplification modules on a transmission line, detecting an optical signal in the transmission process through the relay amplification modules, then amplifying the optical signal in the transmission process and then transmitting the amplified optical signal, finally arranging an output supplement module at the output end of the transmission line, detecting the optical signal output by the output end through the output supplement module, processing the optical signal according to the detection result of the output signal of the output end, and then performing supplement amplification on the output signal of the output end.
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Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the module distribution connection of the system of the present invention;
fig. 2 is a schematic block diagram of the system of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 and 2, the present invention provides an optical fiber signal transmission system based on multi-pass amplification, which performs sectional processing on the transmission of an optical signal by integrating multiple influence factors on a transmission line, and can solve the problems of poor amplification calculation effect and large error of output compensation in the existing optical fiber signal transmission process.
The transmission system comprises an input end amplification module, a transmission detection module, a plurality of relay amplification modules and an output supplement module.
The input end amplification module is arranged at the input end of the transmission line and is used for detecting the optical signal input by the input end and then amplifying the optical signal input by the input end and transmitting the amplified optical signal; the input end amplification module is configured with an input end amplification strategy, and the input end amplification strategy comprises: processing an input optical signal to obtain a decibel value of the input optical signal; then obtaining the distance between the input end and the next relay amplification module, setting the distance as a first distance, and substituting the decibel value of the input signal and the first distance into an input amplification formula to obtain an input amplification value; the input amplification formula is configured to:
(ii) a Wherein, DB sf For inputting amplified values, DB sr The method comprises the steps that the decibel value of an input optical signal is obtained, S1 is a first distance, d1 is an amplification conversion coefficient of the input optical signal, the value range of d1 is 1-2, S1 is an amplification conversion index of the first distance, the value range of S1 is 0-1, signals input by an input end are amplified according to the input amplification value, the amplified signals are transmitted, an input end amplification strategy is used for calculating transmission loss of the input end and a next relay amplification module, and after the transmission loss of the section is obtained, reference can be made for loss between subsequent relay amplification modules and between the relay amplification modules and an output end.
The transmission detection module is used for detecting parameters of a transmission line; the transmission detection module is configured with a transmission detection policy, which includes: detecting the optical signal after the first distance transmission to obtain a decibel value of the optical signal at the tail end of the first distance; then, obtaining a line core diameter of the transmission line, and substituting the decibel value of the optical signal at the end of the first distance, the line core diameter, the first distance and the decibel value of the input optical signal into a line loss coefficient formula to obtain a transmission loss coefficient, wherein the loss coefficient formula is configured as follows:
(ii) a Wherein Xcs is the transmission loss coefficient, DB s1m The loss of the line can refer to the transmission loss between the input end and the first relay amplification module, and the reference basis for the transmission loss can be improved by increasing the parameters of the transmission line, so that the transmission amplification precision is improved.
A plurality of relay amplification modules respectively arranged between the input and output ends of the transmission lineThe optical signal detection device is used for detecting an optical signal in the transmission process, and then amplifying the optical signal in the transmission process and then transmitting the amplified optical signal; the relay amplification module is configured with a relay amplification strategy, and the relay amplification strategy comprises: acquiring the distance between the current relay amplification module and the next relay amplification module, acquiring the distance between the last group of relay amplification modules and the output end, and setting the two distances as the mutual relay distance; obtaining the decibel value of the optical signal detected by each group of relay amplification modules, setting the decibel value as a relay decibel value, and substituting the relay decibel value, the relay mutual distance and the transmission loss coefficient into a relay amplification formula to obtain a relay amplification value; the relay amplification formula is configured to:
(ii) a Wherein, DB zf For relaying amplified values, DB zj And d2 is a relay decibel value, and d2 is a relay amplification compensation value, wherein the value of d2 is set by referring to a transmission loss coefficient, the specific setting range is 1-2, and the optical signal is transmitted after being amplified according to the relay amplification value.
The output supplement module is arranged at the output end of the transmission line and is used for detecting the optical signal output by the output end, processing the optical signal according to the detection result of the output signal of the output end and performing supplement amplification on the output signal of the output end; the output supplement module is configured with an output supplement policy, the output supplement policy comprising: firstly, acquiring a decibel value of an optical signal at an output end, and setting the decibel value as an output decibel value; then obtaining the distance between the input end and the output end, and setting the distance as a transmission distance; then acquiring the number of the relay amplifying modules; substituting the decibel value, the transmission distance, the number of the relay amplification modules and the transmission loss coefficient of the input optical signal into an output amplification formula to obtain an output amplification coefficient; the output amplification formula is configured to:
(ii) a Wherein, X sc For outputting the amplification factor, scs is the transmission distance, and Psl is the number of the relay amplification modulesAnd in the output process, the accuracy of the optical signal output can be further improved by adding the number of the relay amplification modules and the distance between the input end and the output end.
The working principle is as follows: according to the invention, the output amplification module is arranged at the input end, the optical signal input by the input end can be detected through the input end amplification module, then the optical signal input by the input end is amplified and transmitted, and the parameters of a transmission line can be detected through the transmission detection module; the method comprises the steps that a plurality of relay amplification modules are arranged on a transmission line, optical signals in the transmission process can be detected through the relay amplification modules, then the optical signals in the transmission process are amplified and transmitted, finally, an output supplement module is arranged at the output end of the transmission line, the optical signals output by the output end can be detected through the output supplement module, then, the optical signals are processed according to the detection result of the output signals of the output end, then, the output signals of the output end are subjected to supplement amplification, sectional type optical signal processing is carried out on the input end, the transmission line and the output end, and the parameters of the transmission line are integrated, so that the accuracy of the final optical signal output can be improved;
specifically, the implementation principle of the input amplification module is as follows: processing an input optical signal to obtain a decibel value of the input optical signal; then obtaining the distance between the input end and the next relay amplification module, setting the distance as a first distance, and substituting the decibel value of the input signal and the first distance into an input amplification formula to obtain an input amplification value; and amplifying the signal input by the input end according to the input amplification value, and transmitting the amplified signal.
Specifically, the implementation principle of the transmission detection module is as follows: detecting the optical signal after the first distance transmission to obtain a decibel value of the optical signal at the tail end of the first distance; then, the line core diameter of the transmission line is obtained, and the decibel value of the optical signal at the end of the first distance, the line core diameter, the first distance and the decibel value of the input optical signal are substituted into a line loss coefficient formula to obtain a transmission loss coefficient.
Specifically, the implementation principle of the relay amplification module is as follows: acquiring the distance between the current relay amplifying module and the next relay amplifying module, acquiring the distance between the last group of relay amplifying modules and the output end, and setting the two distances as the mutual relay distance; obtaining the decibel value of the optical signal detected by each group of relay amplification modules, setting the decibel value as a relay decibel value, and substituting the relay decibel value, the relay mutual distance and the transmission loss coefficient into a relay amplification formula to obtain a relay amplification value; and amplifying the optical signal according to the relay amplification value and then transmitting the optical signal.
Specifically, the implementation principle of the output supplement module is as follows: firstly, acquiring a decibel value of an optical signal at an output end, and setting the decibel value as an output decibel value; then obtaining the distance between the input end and the output end, and setting the distance as a transmission distance; then acquiring the number of the relay amplifying modules; substituting the decibel value, the transmission distance, the number of relay amplification modules and the transmission loss coefficient of the input optical signal into an output amplification formula to obtain an output amplification coefficient; multiplying the output decibel value by the output amplification coefficient to obtain an output amplification result
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the following descriptions are only illustrative and not restrictive, and that the scope of the present invention is not limited to the above embodiments: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. An optical fiber signal transmission system based on multi-pass amplification is characterized by comprising an input end amplification module, a transmission detection module, a plurality of relay amplification modules and an output supplement module;
the input end amplification module is arranged at the input end of the transmission line and is used for detecting the optical signal input by the input end and then amplifying the optical signal input by the input end and transmitting the amplified optical signal;
the transmission detection module is used for detecting parameters of a transmission line;
the relay amplification modules are respectively arranged between the input end and the output end of the transmission line, and are used for detecting optical signals in the transmission process and then amplifying the optical signals in the transmission process and then transmitting the optical signals;
the output supplement module is arranged at the output end of the transmission line and used for detecting the optical signal output by the output end, processing the optical signal according to the detection result of the output signal of the output end and performing supplement amplification on the output signal of the output end.
2. The optical fiber signal transmission system based on multi-pass amplification of claim 1, wherein the input end amplification module is configured with an input end amplification strategy, the input end amplification strategy comprising: processing an input optical signal to obtain a decibel value of the input optical signal;
then obtaining the distance between the input end and the next relay amplification module, setting the distance as a first distance, and substituting the decibel value of the input signal and the first distance into an input amplification formula to obtain an input amplification value;
and amplifying the signal input by the input end according to the input amplification value, and transmitting the amplified signal.
3. The optical fiber signal transmission system based on multi-pass amplification of claim 2, wherein the input amplification formula is configured to:
；
wherein, DB sf For inputting amplified values, DB sr The decibel value of the input optical signal is S1, the first distance, d1, and S1, the amplification conversion coefficient of the input optical signal, and the amplification conversion index of the first distance.
4. The multi-pass amplification-based fiber optic signal transmission system of claim 3, wherein the transmission detection module is configured with a transmission detection strategy comprising: detecting the optical signal after the first distance transmission to obtain a decibel value of the optical signal at the tail end of the first distance;
then, the circuit core diameter of the transmission line is obtained, and the decibel value of the optical signal at the end of the first distance, the circuit core diameter, the first distance and the decibel value of the input optical signal are substituted into a circuit loss coefficient formula to obtain a transmission loss coefficient.
5. The multi-pass amplification-based fiber optic signal transmission system of claim 4, wherein the loss factor equation is configured to:
；
wherein Xcs is the transmission loss coefficient, DB s1m And the decibel value of the optical signal at the end of the first distance is Rxl, the core diameter of the line is Rxl, and x1 is a loss compensation value.
6. The system according to claim 5, wherein the relay amplification module is configured with a relay amplification strategy, and the relay amplification strategy comprises: acquiring the distance between the current relay amplifying module and the next relay amplifying module, acquiring the distance between the last group of relay amplifying modules and the output end, and setting the two distances as the mutual relay distance;
obtaining the decibel value of the optical signal detected by each group of relay amplification modules, setting the decibel value as a relay decibel value, and substituting the relay decibel value, the relay mutual distance and the transmission loss coefficient into a relay amplification formula to obtain a relay amplification value;
and amplifying the optical signal according to the relay amplification value and then transmitting the optical signal.
7. The optical fiber signal transmission system based on multi-pass amplification of claim 6, wherein the relay amplification formula is configured to:
；
wherein, DB zf For relaying amplified values, DB zj D2 is a relay amplification compensation value.
8. The multi-pass amplification-based fiber optic signal transmission system of claim 7, wherein the output supplement module is configured with an output supplement strategy comprising: firstly, acquiring a decibel value of an optical signal at an output end, and setting the decibel value as an output decibel value; then obtaining the distance between the input end and the output end, and setting the distance as a transmission distance; then acquiring the number of the relay amplifying modules;
substituting the decibel value, the transmission distance, the number of relay amplification modules and the transmission loss coefficient of the input optical signal into an output amplification formula to obtain an output amplification coefficient;
and multiplying the output decibel value by the output amplification coefficient to obtain an output amplification result.
9. The fiber optic signal transmission system based on multi-pass amplification of claim 8, wherein the output amplification formula is configured to:
；
wherein X sc For outputting the amplification factor, scs is the transmission distance, psl is the relay amplification moduleThe number of the cells.
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| CN102347796A (en) * | 2010-08-03 | 2012-02-08 | 中国移动通信集团广东有限公司 | Optical fiber connection method, optical fiber transmitter, optical fiber receiver and optical fiber connection system |
| CN106788752A (en) * | 2016-12-29 | 2017-05-31 | 浙江大学 | A kind of relay amplification device and its method for realizing long-distance distributed optical fiber sensing |
| CN109449733A (en) * | 2018-12-10 | 2019-03-08 | 昂纳信息技术（深圳）有限公司 | A kind of control system of fiber amplifier |
| CN113810110A (en) * | 2021-11-19 | 2021-12-17 | 北京邮电大学 | Transmission system based on hybrid fiber amplifier |
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- 2022-09-15 CN CN202211120167.2A patent/CN115567112B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347796A (en) * | 2010-08-03 | 2012-02-08 | 中国移动通信集团广东有限公司 | Optical fiber connection method, optical fiber transmitter, optical fiber receiver and optical fiber connection system |
| CN106788752A (en) * | 2016-12-29 | 2017-05-31 | 浙江大学 | A kind of relay amplification device and its method for realizing long-distance distributed optical fiber sensing |
| CN109449733A (en) * | 2018-12-10 | 2019-03-08 | 昂纳信息技术（深圳）有限公司 | A kind of control system of fiber amplifier |
| CN113810110A (en) * | 2021-11-19 | 2021-12-17 | 北京邮电大学 | Transmission system based on hybrid fiber amplifier |
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