CN111769869B - Method for prejudging maximum transmission distance of optical communication system - Google Patents
Method for prejudging maximum transmission distance of optical communication system Download PDFInfo
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- CN111769869B CN111769869B CN202010610257.4A CN202010610257A CN111769869B CN 111769869 B CN111769869 B CN 111769869B CN 202010610257 A CN202010610257 A CN 202010610257A CN 111769869 B CN111769869 B CN 111769869B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07953—Monitoring or measuring OSNR, BER or Q
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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Abstract
The invention relates to the technical field of optical communication, and particularly discloses a method for prejudging the maximum transmission distance of an optical communication system, which comprises the following steps: constructing a test system and a simulation system in an optical communication system; inputting an input signal into the simulation system; performing numerical simulation on gain distribution of an input signal in an optical signal path through a simulation system to obtain distributed signal gain and a corresponding simulation output result; equivalent distributed signal gain to lumped signal gain; inputting an input signal into a test system to obtain a corresponding actual output result; judging whether the error between the simulation output result and the actual output result exceeds a threshold value, and calling back simulation parameters of the simulation system; and when the error does not exceed the threshold value, pre-judging the on-off of the optical communication system according to the simulation output result, changing the gain and the transmission distance of the optical communication system in the simulation system according to the relevant parameters of the test system, and judging the maximum transmission distance of the optical communication system in a conductive state according to the lumped signal gain.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a method for prejudging the maximum transmission distance of an optical communication system.
Background
Long-range optical communication transmission systems are widely used worldwide and are in great demand. Especially in China, as the territorial breadth is wide, people are rare in many remote areas, the terrain is complex, and many spans exceed 300 kilometers, the demand for large-capacity and ultra-long-distance transmission systems is increasingly increased.
In an ultra-long distance transmission system, due to the large total loss of the transmission line, in order to ensure sufficient sensitivity of the receiving end (RX) signal, it is usually necessary to increase the signal power of the input end (TX) as much as possible, and the input signal light is usually amplified by an optical amplifier such as an optical power amplifier (OBA), a Raman Fiber Amplifier (RFA), and the like. However, the input signal power cannot be increased infinitely due to the limitation of the Stimulated Brillouin Scattering (SBS) threshold, and therefore, the transmission distance of the system is limited.
Disclosure of Invention
The invention provides a method for prejudging the maximum transmission distance of an optical communication system, which aims to solve the problem that the transmission distance of the optical communication system has certain restriction in the prior art because the input signal power cannot be infinitely increased due to the restriction of an SBS threshold.
As a first aspect of the present invention, there is provided a method for predicting a maximum transmission distance of an optical communication system, including the steps of:
constructing a test system in the optical communication system, and constructing a simulation system in the optical communication system based on system-related parameters of the test system;
inputting an input signal to an input end of an optical signal path of the simulation system;
performing numerical simulation on the gain distribution of the input signal in the optical signal path through the simulation system to obtain distributed signal gains and corresponding simulation output results;
equating distributed signal gain in the optical signal path to equivalent lumped signal gain at an input end of the optical signal path;
inputting the input signal into the test system to obtain a corresponding actual output result;
comparing the simulation output result with the actual output result, and judging whether the error between the simulation output result and the actual output result exceeds a reliable threshold value;
if the error exceeds the reliable threshold, calling back simulation parameters of a simulation system in the optical communication system until the error between the simulation output result and the actual output result does not exceed the reliable threshold;
and when the error does not exceed the reliable threshold, pre-judging the on-off of the optical communication system according to a simulation output result of the simulation system, changing the gain and the transmission distance of the optical communication system in the simulation system according to the given system related parameters of the test system, and judging the maximum transmission distance of the optical communication system in a conductive state according to the lumped signal gain.
Further, the system-related parameters of the test system include: the system comprises an input signal spectrum, an input signal optical power, an input signal optical noise power, an optical power amplifier gain, an optical power amplifier noise coefficient, a forward Raman amplifier amplification power, an optical fiber insertion loss, an optical preamplifier gain, an optical preamplifier noise coefficient, a receiving end signal spectrum, a receiving end optical detector sensitivity and a receiving end optical signal to noise ratio threshold.
Further, the simulation system in the optical communication system includes:
the optical power amplification module is arranged at the input end of the optical signal path and is used for amplifying the optical power of the input signal and the optical power generating noise at the input end of the optical signal path;
a forward raman amplification module for amplifying optical power of the input signal and optical power generating noise during the entire transmission of the input signal in the optical signal path;
the SBS threshold module is used for calculating an SBS threshold of the optical communication system according to the spectral information of the input signal;
the self-phase modulation effect simulation module is used for determining self-phase modulation phase shift change information which enables the input signal to generate spectrum phase shift change due to the self-phase modulation effect in the whole transmission process of the input signal in the optical signal path;
a cross phase modulation effect simulation module, configured to determine self-phase modulation phase shift change information that the input signal has a spectral phase shift change due to a cross phase modulation effect in the entire transmission process of the input signal in the optical signal path;
the group velocity dispersion effect simulation module is used for determining that the input signal generates spectral dispersion change information due to the group velocity dispersion effect in the whole transmission process of the input signal in the optical signal path;
and the noise calculation module is used for determining the generation, amplification and attenuation information of noise in the whole process of transmitting the input signal in the optical signal path.
Further, the method also comprises the following steps:
calling the SBS threshold module to calculate an SBS threshold of the optical communication system;
adjusting the gain of the Raman amplifier to enable the maximum power in an optical signal path to reach an SBS threshold;
and adjusting the length of the optical signal path, comparing the simulation output result with the sensitivity of an optical detector at the output end of the optical signal path and the optical signal-to-noise ratio of the output signal, and prejudging the maximum transmission distance of the optical communication system.
Further, the simulation parameters include:
a gain factor disposed in the optical power amplification module;
a gain factor provided in the forward raman amplifier;
an SBS threshold disposed in the SBS threshold module.
Further, the simulation output result comprises: the distribution curve of the signal power at each position of the optical signal path, the output spectrum waveform, the optical signal-to-noise ratio of the output signal and the SBS threshold of the optical communication system; the actual output result includes: output signal power, output spectral waveform, and output signal optical signal-to-noise ratio.
Further, the step of comparing the simulation output result with the actual output result and determining whether an error between the simulation output result and the actual output result exceeds a reliability threshold includes:
calculating a linear regression decision coefficient R between the simulated output result and the actual output result2；
Judging the linear regression decision coefficient R2Whether the content is greater than or equal to 0.95;
determining the coefficient R if the linear regression2Greater than or equal to 0.95, determining that the error between the simulated output result and the actual output result does not exceed the reliability threshold;
otherwise, determining that the error between the simulation output result and the actual output result exceeds the reliability threshold.
Further, the step of prejudging the on-off of the optical communication system according to the simulation output result of the simulation system when the error does not exceed the reliability threshold includes:
obtaining a distribution curve of the signal power at each position of the optical signal path when the error does not exceed a reliable threshold, an SBS threshold and an optical signal-to-noise ratio of the output signal;
determining a maximum value of a profile at the output signal power;
judging whether the SBS threshold is higher than the maximum value of the distribution curve of the signal power;
and if the SBS threshold is lower than the maximum value of the distribution curve of the signal power, determining that the optical communication system is not conducted, otherwise, further comparing the signal power of the output end.
Further, the method also comprises the following steps:
acquiring the sensitivity of a light detector positioned at the output end of the optical signal path;
determining the output signal power at the output end of the optical signal path according to the distribution curve of each position of the optical signal path;
judging whether the output signal power is higher than the sensitivity limit of a light detector at the output end of the optical signal path;
and if the output signal power is lower than the sensitivity limit of the optical detector at the output end of the optical signal path, determining that the optical communication system is not conducted, otherwise, further comparing the optical signal-to-noise ratio threshold value of the output end.
Further, still include:
judging whether the optical signal-to-noise ratio of the output signal is higher than the threshold value of the optical signal-to-noise ratio of the output end;
and if the optical signal-to-noise ratio of the output signal is higher than the optical signal-to-noise ratio threshold value of the output end, determining that the optical communication system is conducted, otherwise, not conducting.
The method for prejudging the maximum transmission distance of the optical communication system can accurately simulate the distribution condition and the transmission state of signals at different distances in the transmission system and predict the working performance of the over-long-distance optical communication system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart illustrating a method for predicting a maximum transmission distance of an optical communication system according to a first embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for predicting a maximum transmission distance of an optical communication system according to a second embodiment of the present invention.
FIG. 3 shows one embodiment of step 108 in the present invention.
Fig. 4 is a block diagram of a simulation system of an optical communication system according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description will be given to the specific implementation, structure, features and effects of the method for predicting the maximum transmission distance of an optical communication system according to the present invention with reference to the accompanying drawings and preferred embodiments. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In this embodiment, a method for predicting a maximum transmission distance of an optical communication system is provided, as shown in fig. 1, including the following steps:
step 101: constructing a test system in the optical communication system, and constructing a simulation system in the optical communication system based on system-related parameters of the test system;
step 102: inputting an input signal to an input end of an optical signal path of the simulation system;
step 103: performing numerical simulation on the gain distribution of the input signal in the optical signal path through the simulation system to obtain distributed signal gains and corresponding simulation output results;
step 104: equating distributed signal gain in the optical signal path to equivalent lumped signal gain at an input end of the optical signal path;
step 105: inputting the input signal into the test system to obtain a corresponding actual output result;
step 106: comparing the simulation output result with the actual output result, and judging whether the error between the simulation output result and the actual output result exceeds a reliable threshold value;
step 107: if the error exceeds the reliable threshold, calling back simulation parameters of a simulation system in the optical communication system until the error between the simulation output result and the actual output result does not exceed the reliable threshold;
Preferably, the system-related parameters of the test system include: the receiver comprises an input signal spectrum, an input signal optical power, an input signal optical noise power, an OBA gain, an OBA noise coefficient, a forward Raman amplifier amplification power, an optical fiber insertion loss, an OPA gain, an OPA noise coefficient, a receiver signal spectrum, a receiver photodetector sensitivity and a receiver optical signal to noise ratio threshold.
Preferably, the simulation parameters include:
a gain factor disposed in the optical power amplification module;
a gain factor provided in the forward raman amplifier;
an SBS threshold disposed in the SBS threshold module.
Preferably, the simulation output result includes: the distribution curve of the signal power at each position of the optical signal path, the output spectrum waveform, the optical signal-to-noise ratio of the output signal and the SBS threshold of the optical communication system; the actual output result includes: output signal power, output spectral waveform, and output signal optical signal-to-noise ratio.
Preferably, the step 106 of comparing the simulation output result with the actual output result and determining whether an error between the simulation output result and the actual output result exceeds a reliability threshold includes:
calculating a linear regression decision coefficient R between the simulated output result and the actual output result2；
Judging the linear regression decision coefficient R2Whether or not it is 0.95 or more;
determining the coefficient R if the linear regression2If the error is larger than or equal to 0.95, determining that the error between the simulation output result and the actual output result does not exceed the reliable threshold;
otherwise, determining that the error between the simulation output result and the actual output result exceeds the reliability threshold.
As shown in fig. 3, which illustrates an example of step 108 in the embodiment of the present invention, in step 108, when the error does not exceed the reliability threshold, the step of predicting the on/off of the optical communication system according to the simulation output result of the simulation system includes: reading a simulation output result, pre-judging an SBS threshold, pre-judging output signal power and pre-judging an OSNR threshold;
the simulation output result reading comprises:
obtaining a distribution curve of the signal power at each position of the optical signal path when the error does not exceed a reliable threshold, an SBS threshold and an optical signal-to-noise ratio of the output signal;
the system on-off prejudgment limited by the SBS threshold comprises the following steps:
determining a maximum value of a profile at the output signal power;
judging whether the SBS threshold is higher than the maximum value of the distribution curve of the signal power;
if the SBS threshold is lower than the maximum value of the distribution curve of the signal power, determining that the optical communication system is not conducted, otherwise, further comparing the signal power of an output end;
the system on-off prejudgment limited by the output signal power comprises the following steps:
acquiring the sensitivity of a light detector positioned at the output end of the optical signal path;
determining the output signal power at the output end of the optical signal path according to the distribution curve of each position of the optical signal path;
judging whether the output signal power is higher than the sensitivity limit of a light detector at the output end of the optical signal path;
if the output signal power is lower than the sensitivity limit of the optical detector at the output end of the optical signal path, determining that the optical communication system is not conducted, otherwise, further comparing the optical signal-to-noise ratio threshold value of the output end;
the system on-off prejudgment limited by the receiving end OSNR threshold value comprises the following steps:
judging whether the optical signal-to-noise ratio of the output signal is higher than the threshold value of the optical signal-to-noise ratio of the output end;
and if the optical signal-to-noise ratio of the output signal is higher than the threshold value of the optical signal-to-noise ratio of the output end, determining that the optical communication system is conducted, otherwise, not conducting.
Preferably, the method further comprises the following steps:
calling the SBS threshold module to calculate an SBS threshold of the optical communication system;
adjusting the gain of the Raman amplifier to enable the maximum power in the optical signal path to reach an SBS threshold;
and adjusting the gain and the optical signal path length of the optical communication system, comparing the simulation output result with the sensitivity of an optical detector at the output end of the optical signal path and the optical signal-to-noise ratio of the output signal, and prejudging the maximum transmission distance of the optical communication system.
As shown in fig. 4, a block diagram of a simulation system of an optical communication system according to an embodiment of the present invention is shown, where the simulation system in the optical communication system includes:
an optical power amplifying module 412, disposed at an input end of the optical signal path 411, for amplifying the optical power of the input signal and the optical power generating noise at the input end of the optical signal path 411;
a forward raman amplification module 413 for amplifying the optical power of the input signal and the optical power generating noise during the whole transmission process of the input signal in the optical signal path 411;
an SBS threshold module 414, configured to calculate an SBS threshold of the optical communication system according to the spectral information of the input signal;
a self-phase modulation effect simulation module 415, configured to determine self-phase modulation phase shift change information that the input signal undergoes a spectral phase shift change due to a self-phase modulation effect in the entire transmission process of the input signal in the optical signal path 411;
a cross-phase modulation effect simulation module 416, configured to determine self-phase modulation phase shift change information that the input signal has a spectral phase shift change due to a cross-phase modulation effect in the entire transmission process of the input signal in the optical signal path 411;
a group velocity dispersion effect simulation module 417, configured to determine that, in the entire transmission process of the input signal in the optical signal path 411, the input signal has spectral dispersion change information due to a group velocity dispersion effect;
a noise calculation module 418 for determining the information of noise generation, gain and attenuation during the whole process of the input signal transmitted in the optical signal path 411.
In summary, the present invention accurately simulates the transmission state of the optical signal in the transmission system, such as power change, spectrum distortion, optical signal-to-noise ratio change, etc., based on the numerical calculation of various theoretical models of nonlinear effects, optical amplifier principle, optical loss, dispersion, etc. in the transmission system, theoretically and specifically analyzes the abnormal phenomenon caused by the nonlinear effect in the actual measurement system, and makes up the disadvantage that the actual test system cannot observe point-by-point.
The working state of the signal light of the output end can be accurately simulated aiming at different input conditions of the signal light of the input end, so that the prediction of the overall working performance of the optical communication system is realized, the optimal design of parameters of the optical communication system is guided, the installation cost and the time cost of the existing test system are reduced, and the system design efficiency is improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A method for prejudging the maximum transmission distance of an optical communication system is characterized by comprising the following steps:
constructing a test system in the optical communication system, and constructing a simulation system in the optical communication system based on system-related parameters of the test system;
inputting an input signal to an input end of an optical signal path of the simulation system;
performing numerical simulation on the gain distribution of the input signal in the optical signal path through the simulation system to obtain distributed signal gains and corresponding simulation output results;
equating distributed signal gain in the optical signal path to equivalent lumped signal gain at an input end of the optical signal path;
inputting the input signal into the test system to obtain a corresponding actual output result;
comparing the simulation output result with the actual output result, and judging whether the error between the simulation output result and the actual output result exceeds a reliable threshold value;
if the error exceeds the reliable threshold, calling back simulation parameters of a simulation system in the optical communication system until the error between the simulation output result and the actual output result does not exceed the reliable threshold;
when the error does not exceed the reliability threshold, pre-judging the on-off of the optical communication system according to the simulation output result of the simulation system, changing the gain and the transmission distance of the optical communication system in the simulation system according to the given system related parameters of the test system, and judging the maximum transmission distance of the optical communication system in a conductive state according to the lumped signal gain;
wherein the system-related parameters of the test system include: the system comprises an input signal spectrum, an input signal optical power, an input signal optical noise power, an optical power amplifier gain, an optical power amplifier noise coefficient, a forward Raman amplifier amplification power, an optical fiber insertion loss, an optical preamplifier gain, an optical preamplifier noise coefficient, a receiving end signal spectrum, a receiving end optical detector sensitivity and a receiving end optical signal to noise ratio threshold.
2. The method of claim 1, wherein the simulation system in the optical communication system comprises:
the optical power amplification module is arranged at the input end of the optical signal path and is used for amplifying the optical power of the input signal and the optical power generating noise at the input end of the optical signal path;
a forward raman amplification module for amplifying optical power of the input signal and optical power generating noise during the entire transmission of the input signal in the optical signal path;
the SBS threshold module is used for calculating an SBS threshold of the optical communication system according to the spectral information of the input signal;
the self-phase modulation effect simulation module is used for determining self-phase modulation phase shift change information which enables the input signal to generate spectrum phase shift change due to the self-phase modulation effect in the whole transmission process of the input signal in the optical signal path;
a cross phase modulation effect simulation module, configured to determine self-phase modulation phase shift change information that the input signal undergoes a spectral phase shift change due to a cross phase modulation effect in the entire transmission process of the input signal in the optical signal path;
the group velocity dispersion effect simulation module is used for determining that the input signal generates spectral dispersion change information due to the group velocity dispersion effect in the whole transmission process of the input signal in the optical signal path;
and the noise calculation module is used for determining the generation, amplification and attenuation information of noise in the whole process of transmitting the input signal in the optical signal path.
3. The method for predicting the maximum transmission distance of the optical communication system according to claim 2, further comprising the steps of:
calling the SBS threshold module to calculate an SBS threshold of the optical communication system;
adjusting the gain of the forward Raman amplification module to enable the maximum power in an optical signal path to reach an SBS threshold;
and adjusting the length of the optical signal path, comparing the simulation output result with the sensitivity of an optical detector at the output end of the optical signal path and the optical signal-to-noise ratio of the output signal, and prejudging the maximum transmission distance of the optical communication system.
4. The method of claim 2, wherein the simulation parameter comprises:
a gain factor disposed in the optical power amplification module;
a gain coefficient disposed in the forward Raman amplification module;
an SBS threshold disposed in the SBS threshold module.
5. The method of claim 1, wherein the simulation output result comprises: the distribution curve of the signal power at each position of the optical signal path, the output spectrum waveform, the optical signal-to-noise ratio of the output signal and the SBS threshold of the optical communication system; the actual output result includes: output signal power, output spectral waveform, and output signal optical signal-to-noise ratio.
6. The method of claim 1, wherein the step of comparing the simulation output result with the actual output result to determine whether the error between the simulation output result and the actual output result exceeds a reliability threshold comprises:
calculating a linear regression decision coefficient R between the simulated output result and the actual output result2；
Judging the linear regression decision coefficient R2Whether or not it is 0.95 or more;
determining the coefficient R if the linear regression2If the error is larger than or equal to 0.95, determining that the error between the simulation output result and the actual output result does not exceed the reliable threshold;
otherwise, determining that the error between the simulation output result and the actual output result exceeds the reliability threshold.
7. The method according to claim 1, wherein the step of predicting the on/off of the optical communication system according to the simulation output result of the simulation system when the error does not exceed the reliability threshold comprises:
obtaining a distribution curve of the signal power at each position of the optical signal path when the error does not exceed a reliable threshold, an SBS threshold and an optical signal-to-noise ratio of the output signal;
determining a maximum value of a profile at the output signal power;
judging whether the SBS threshold is higher than the maximum value of the distribution curve of the signal power;
and if the SBS threshold is lower than the maximum value of the distribution curve of the signal power, determining that the optical communication system is not conducted, otherwise, further comparing the signal power of the output end.
8. The method of claim 7, further comprising:
acquiring the sensitivity of a light detector positioned at the output end of the optical signal path;
determining the output signal power at the output end of the optical signal path according to the distribution curve of each position of the optical signal path;
judging whether the output signal power is higher than the sensitivity limit of a light detector at the output end of the optical signal path;
and if the output signal power is lower than the sensitivity limit of the optical detector at the output end of the optical signal path, determining that the optical communication system is not conducted, otherwise, further comparing the optical signal-to-noise ratio threshold value of the output end.
9. The method of claim 8, further comprising:
judging whether the optical signal-to-noise ratio of the output signal is higher than the threshold value of the optical signal-to-noise ratio of the output end;
and if the optical signal-to-noise ratio of the output signal is higher than the optical signal-to-noise ratio threshold value of the output end, determining that the optical communication system is conducted, otherwise, not conducting.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6961522B1 (en) * | 2000-11-22 | 2005-11-01 | Cisco Technology, Inc. | Automatic raman gain and tilt control for ultra-long-distance dense WDM optical communication system |
| CN102790643A (en) * | 2011-05-18 | 2012-11-21 | 华为技术有限公司 | Parameter simulation processing method and device |
| CN104639247A (en) * | 2015-01-22 | 2015-05-20 | 中航光电科技股份有限公司 | Optical fiber transmission system of super long distance non-repeater radio frequency signal |
| CN107888291A (en) * | 2017-10-12 | 2018-04-06 | 武汉邮电科学研究院 | Signal compensation apparatus and method in a kind of fiber optic communication of two-way Raman amplifiction |
| CN110932809A (en) * | 2019-11-20 | 2020-03-27 | 北京邮电大学 | Optical fiber channel model simulation method and device |
-
2020
- 2020-06-30 CN CN202010610257.4A patent/CN111769869B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6961522B1 (en) * | 2000-11-22 | 2005-11-01 | Cisco Technology, Inc. | Automatic raman gain and tilt control for ultra-long-distance dense WDM optical communication system |
| CN102790643A (en) * | 2011-05-18 | 2012-11-21 | 华为技术有限公司 | Parameter simulation processing method and device |
| CN104639247A (en) * | 2015-01-22 | 2015-05-20 | 中航光电科技股份有限公司 | Optical fiber transmission system of super long distance non-repeater radio frequency signal |
| CN107888291A (en) * | 2017-10-12 | 2018-04-06 | 武汉邮电科学研究院 | Signal compensation apparatus and method in a kind of fiber optic communication of two-way Raman amplifiction |
| CN110932809A (en) * | 2019-11-20 | 2020-03-27 | 北京邮电大学 | Optical fiber channel model simulation method and device |
Non-Patent Citations (1)
| Title |
|---|
| 多泵浦光纤拉曼放大器增益性能研究;徐小锋等;《光通信研究》;20150216(第02期);全文 * |
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