CN112073120B - Photoelectric signal processing method and system based on optical solitons - Google Patents
Photoelectric signal processing method and system based on optical solitons Download PDFInfo
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- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
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- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
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Abstract
The invention provides a photoelectric signal processing method and system based on optical solitons, and relates to the technical field of signal processing. The method comprises the steps of evaluating the frequency component of an optical soliton by using a model of the optical soliton during transmission in an optical fiber communication system, when the wavelength in the optical soliton parameter is not less than a first preset value, communicating through a first communication link, and performing positive-negative dispersion cancellation through a dispersion compensation optical fiber with a negative dispersion coefficient and a single mode optical fiber with a positive dispersion coefficient, which are arranged in the first communication link; otherwise, the communication is carried out in the second communication link, and the transmission speed is improved.
Description
Technical Field
The invention relates to the technical field of signal processing, in particular to a photoelectric signal processing method and system based on optical solitons.
Background
Optical solitons: refers to light pulses that remain unchanged in shape over long distances; the pulse energy emitted by the light sources with different spectral line widths enters the transmission system, so that different propagation speeds are caused, and a time delay difference is generated at a receiving end, so that the pulse of a signal is widened in the transmission process of the system. With the great increase of the transmission speed of the optical fiber, the dispersion broadening is more and more serious, namely, the chromatic dispersion. In the current research in the optical soliton communication field, center frequency detuning still exists, which causes signal noise, and after the optical soliton signal is amplified, the same as the optical communication in the prior art, the dispersion problem of the optical soliton still exists, thereby causing signal attenuation.
Compensation of chromatic dispersion: this is currently mainly achieved by Dispersion Compensated Fiber (DCF) or Fiber Bragg Grating (FBG). Wherein the Dispersion Compensating Fiber (DCF): the principle is as follows: since the dispersion compensating fiber has a negative dispersion coefficient, dispersion caused by the conventional fiber can be cancelled. The advantages are that: DCF has simple structure and mature technology. The use of DCF for dispersion compensation is currently the most widely used compensation scheme.
But the method reduces the effective sectional area of the optical fiber, increases the transmission loss, influences the nonlinear effect and has low transmission speed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a photoelectric signal processing method and system based on optical solitons, and solves the problem that the transmission speed is low when chromatic dispersion is solved in optical soliton communication in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a photoelectric signal processing method based on optical solitons comprises the following steps:
step 1, converting a data stream into optical solitons;
step 2, estimating frequency components of the optical solitons based on a model when the optical solitons are transmitted in the optical fiber communication system, and outputting optical soliton parameters, wherein the optical soliton parameters comprise optical pulse intensity, pulse width, optical pulse amplitude, optical wave number and carrier frequency so as to mark the speed dispersion and self-phase modulation relation of optical arc subgroup;
step 3, selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: if the wavelength in the optical soliton parameter is not less than a first preset value, communication is carried out through a first communication link, and positive and negative dispersion cancellation is carried out through a dispersion compensation fiber with a negative dispersion coefficient and a single mode fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, communication is performed through the second communication link.
Further, the step 1 comprises:
and the generated data stream is sent to a photon generator, amplified and modulated into an optical signal by an interference wavelength division multiplexer constructed by an optical fiber coupler.
Further, the estimating the frequency component of the optical soliton based on the model of the optical soliton during transmission in the optical fiber communication system includes:
calculating the initial chirp value of the optical solitons and the influence of optical fiber loss on optical soliton dispersion, and calculating gain;
the change in propagation speed of the amplification gain to the generation of frequency components is evaluated from the slowly varying envelope of the optical solitons in the time domain.
Further, the second communication link and the first communication link adopt different dispersion compensation methods.
Further, the first preset value is a specific wavelength, and the transmission rate of the wavelength signal in the first communication link is equal to the transmission rate in the second communication link.
Further, when the first communication link is in communication, if the optical path differences of the multiple wavelengths generated by the evaluated frequency components are greater than a second preset value, the optical path differences of the different wavelengths are reduced by changing the phase modulation function Φ (λ) of the binary diffraction surface.
Further, the first-stage dispersion cancellation is performed in the generation stage of the photon generator, specifically: the low order dispersion is selectively eliminated and the retained low order dispersion is used to compensate for the effects of the high order dispersion.
Further, the method also comprises the step of adjusting parameters at the input end and receiving time at the output end as training samples through a neural network or a decision tree method, and optimizing the setting of the first preset value and the second preset value.
A photoelectric signal processing system based on optical solitons comprises an optical soliton conversion module, an evaluation module, a link selection module, a reflection-type prism dispersion compensation module and a generation stage dispersion elimination module;
the optical soliton conversion module is used for converting a data stream into optical solitons;
the evaluation module is used for evaluating the frequency component of the optical soliton based on a model of the optical soliton during transmission in the optical fiber communication system and outputting an optical soliton parameter;
the link selection module is used for selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: if the wavelength in the optical soliton parameter is not less than a first preset value, communication is carried out through a first communication link, and positive and negative dispersion cancellation is carried out through a dispersion compensation fiber with a negative dispersion coefficient and a single mode fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, communication is carried out through a second communication link;
the reflection type prism grating dispersion compensation mode is used for reducing the optical path difference of different wavelengths by changing the phase modulation function phi (lambda) of the binary diffraction surface when the optical path difference of multiple wavelengths generated by the evaluated frequency component is larger than a second preset value;
the generation-stage dispersion elimination module is used for selectively eliminating low-order dispersion in the generation stage of the photon generator and using the reserved low-order dispersion to compensate the influence of high-order dispersion.
(III) advantageous effects
The invention provides a photoelectric signal processing method and system based on optical solitons. Compared with the prior art, the method has the following beneficial effects:
the method comprises the steps of evaluating the frequency component of an optical soliton by using a model of the optical soliton during transmission in an optical fiber communication system, when the wavelength in the optical soliton parameter is not less than a first preset value, communicating through a first communication link, and performing positive-negative dispersion cancellation through a dispersion compensation optical fiber with a negative dispersion coefficient and a single mode optical fiber with a positive dispersion coefficient, which are arranged in the first communication link; otherwise, the communication is carried out in the second communication link, and the transmission speed is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a photoelectric signal processing method and system based on optical solitons, solves the problem that in the prior art, when chromatic dispersion is solved in optical soliton communication, the transmission speed is slow, and achieves the purpose of improving the transmission speed.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example 1:
as shown in fig. 1, the present invention provides a method for processing an optical soliton-based optoelectronic signal, the method is executed by a computer, and the method comprises:
step 1, converting a data stream into optical solitons;
step 2, estimating frequency components of the optical solitons based on a model when the optical solitons are transmitted in the optical fiber communication system, and outputting optical soliton parameters, wherein the optical soliton parameters comprise optical pulse intensity, pulse width, optical pulse amplitude, optical wave number and carrier frequency so as to mark the speed dispersion and self-phase modulation relation of optical arc subgroup;
step 3, selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: if the wavelength in the optical soliton parameter is not less than a first preset value, communication is carried out through a first communication link, and positive and negative dispersion cancellation is carried out through a dispersion compensation fiber with a negative dispersion coefficient and a single mode fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, communication is performed through the second communication link.
The beneficial effect of this embodiment does:
the method comprises the steps of evaluating the frequency component of an optical soliton by using a model of the optical soliton during transmission in an optical fiber communication system, when the wavelength in the optical soliton parameter is not less than a first preset value, communicating through a first communication link, and performing positive-negative dispersion cancellation through a dispersion compensation optical fiber with a negative dispersion coefficient and a single mode optical fiber with a positive dispersion coefficient, which are arranged in the first communication link; otherwise, the communication is carried out in the second communication link, and the transmission speed is improved.
The following describes the implementation process of the embodiment of the present invention in detail by taking data transmission of an intelligent manufacturing system as an example:
the intelligent manufacturing system is mainly based on the Internet of things, numerical value conversion is carried out through sensor measurement to obtain electric pulse signals, and optical soliton lossless transmission is adopted as an intelligent manufacturing information intercommunication mode when data transmission is carried out on a data line and an industrial wireless network.
A double-channel optical soliton communication link is arranged in an intelligent manufacturing system, wherein the double-channel communication link comprises a first communication link and a second communication link, the first communication link is a compensation communication link, and a dispersion compensation optical fiber used for compensating dispersion and a single-mode optical fiber with a positive dispersion coefficient are arranged between an optical soliton generator and a receiving end optical communication link.
Step 1, converting a data stream into optical solitons; the method specifically comprises the following steps:
and sending the data stream generated by the intelligent manufacturing system to a photon generator, amplifying the data stream, and modulating the electrical signal into an optical signal by an interference wavelength division multiplexer constructed by an optical fiber coupler.
Wherein, the amplifier can be an erbium-doped fiber amplifier with a bidirectional pumping structure. The coupler may be a fiber optic coupler with unequal arm interference.
Step 2, the optical solitons obtained in the step 1 are used as input signals, a model when the optical solitons are transmitted in an optical fiber communication system is used for evaluating frequency components of the optical solitons, and optical soliton parameters are output, wherein the optical soliton parameters comprise optical pulse intensity, pulse width, optical pulse amplitude, optical wave number and carrier frequency so as to mark the relation between velocity dispersion and self-phase modulation of optical arc subgroups;
the first preset value is a first preset value obtained by model calculation when the optical solitons are transmitted in the optical fiber communication system, the first preset value can be selected as a specific wavelength, and the transmission rate of the wavelength signal in the first communication link is equal to the transmission rate in the second communication link.
Wherein the evolution process of the optical soliton in the optical fiber can be described by nonlinear Schrodinger equation, that is
Where A (z, τ) is the slowly varying amplitude of the pulse envelope, z is the transmission distance along the fiber, τ is a time parameter, γ is a nonlinear parameter, and Ω is the gain bandwidth, for example: the gain bandwidth in thulium doped fiber is 40nm, g is the gain coefficient.
The frequency component of the optical soliton is evaluated specifically as follows: and calculating the initial chirp value of the optical solitons and the influence of the optical fiber loss on the dispersion of the optical solitons to calculate the gain, and evaluating the change of the propagation speed of the amplification gain on the generation of the frequency components according to the slow-changing envelope of the optical solitons in the time domain.
When the light arc enters the optical fiber for transmission, the center frequency is caused to be omega0There is a frequency difference from the center to both sides of the pulse of (a), where the difference is:
wherein, beta2Is group velocity dispersion parameter of optical fiberNumber, T0Is the initial pulse width;
thus, the temporal pulse width variation is:
T0(z)＝T0[1+(z/LD)]1/2
wherein L isDIs the dispersion length.
According to the nyquist criterion, if a pulse interval is pi/ω (ω 2 π f) and a narrow pulse signal is transmitted through an ideal communication channel, mutual crosstalk is not generated between preceding and following symbols. Thus, the maximum data transmission rate R for a binary data signalmaxThe relationship to the communication channel bandwidth B (B ═ f, in Hz) can be written as:
Rmax＝2B(bps)
for example, if the channel bandwidth B ═ f ═ 3000Hz for binary data, the maximum data transmission rate is 6000bps, and the propagation speed of signals with different frequencies can be obtained.
The optical path difference can be expressed as:
wherein m represents a diffraction order, λ0Denotes the center wavelength, [ phi ] (lambda) denotes the phase modulation function, [ lambda ]1At a first wavelength, λ2At the second wavelength, BD is the first optical path, and BC is the second optical path.
Step 3, selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: and according to the frequency components, if the correspondingly calculated wavelength data in the frequency components reach a first preset value (wavelength), selecting a first communication link for communication, and carrying out positive and negative dispersion cancellation through a dispersion compensation fiber and a single mode fiber with a positive dispersion coefficient. And if the wavelength in the frequency component is smaller than a first preset value, selecting a second communication link for communication, wherein the second communication link can select a dispersion compensation method different from that of the first communication link to compensate the signal, for example, adopting a Fiber Bragg Grating (FBG).
The first communication link further comprises a reflective gridline dispersion compensation module; the reflection type edge grating dispersion compensation module is used for reducing optical path difference of different wavelengths. If the optical path differences of the various wavelengths generated by the evaluated frequency components are larger than a second preset value, the optical path differences of the different wavelengths are reduced by changing the phase modulation function phi (lambda) of the binary diffraction surface.
The setting of the first preset value and the second preset value can be optimized by adjusting parameters of the input end and receiving time of the output end through methods such as a neural network and a decision tree to serve as training samples, and the transmission speed is further improved.
The first-stage dispersion elimination is carried out in the generation stage of the photon generator: the low order dispersion is selectively eliminated and the retained low order dispersion is used to compensate for the effect of the high order dispersion, thereby enabling ultra short pulses closer to the fourier transform limit to be obtained.
The dispersion compensation mode of the DCF can be selected from front compensation, rear dispersion compensation or symmetrical compensation. Wherein, the pre-compensation mode is to place the DCF fiber in front of the SMF fiber. The post-dispersion compensation scheme is opposite to the pre-dispersion compensation scheme, and a DCF fiber is arranged behind an SMF fiber in each transmission unit; the symmetric dispersion compensation scheme differs from the first two by symmetrically distributing the DCF and SMF fibers among adjacent transmission units.
Example 2
The invention also provides a photoelectric signal processing system based on the optical solitons,
a double-channel optical soliton communication link is arranged in an intelligent manufacturing system, wherein the double-channel communication link comprises a first communication link and a second communication link, the first communication link is a compensation communication link, a dispersion compensation optical fiber used for compensating dispersion and a single-mode optical fiber with a positive dispersion coefficient are arranged between an optical soliton generator and a receiving end optical communication link, and the second communication link selects a dispersion compensation method different from that of the first link to compensate signals.
The system comprises an optical soliton conversion module, an evaluation module, a link selection module, a reflection-type prism-grating dispersion compensation module and a generation stage dispersion elimination module.
The optical soliton conversion module is used for converting a data stream into optical solitons;
the evaluation module is used for evaluating the frequency component of the optical soliton based on a model of the optical soliton during transmission in the optical fiber communication system and outputting an optical soliton parameter;
the link selection module is used for selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: if the wavelength in the optical soliton parameter is not less than a first preset value, communication is carried out through a first communication link, and positive and negative dispersion cancellation is carried out through a dispersion compensation fiber with a negative dispersion coefficient and a single mode fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, communication is carried out through a second communication link;
the reflection type prism grating dispersion compensation mode is used for reducing the optical path difference of different wavelengths by changing the phase modulation function phi (lambda) of the binary diffraction surface when the optical path difference of multiple wavelengths generated by the evaluated frequency component is larger than a second preset value;
the generation-stage dispersion elimination module is used for selectively eliminating low-order dispersion in the generation stage of the photon generator and using the reserved low-order dispersion to compensate the influence of high-order dispersion.
It can be understood that, the optical soliton-based photoelectric signal processing system provided in the embodiment of the present invention corresponds to the optical soliton-based photoelectric signal processing method described above, and for explanation, examples, and beneficial effects of the relevant contents, the corresponding contents in the optical soliton-based photoelectric signal processing method can be referred to, and details are not repeated here.
In summary, compared with the prior art, the invention has the following beneficial effects:
firstly, the invention evaluates the frequency component of the optical soliton by using a model when the optical soliton is transmitted in an optical fiber communication system, when the wavelength in the optical soliton parameter is not less than a first preset value, the communication is carried out through a first communication link, and the positive and negative dispersion cancellation is carried out through a dispersion compensation optical fiber with a negative dispersion coefficient and a single mode optical fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, the communication is carried out in the second communication link, and the transmission speed is improved.
It can be understood that, the optical soliton-based photoelectric optical fiber communication system provided in the embodiment of the present invention corresponds to the above optical soliton-based photoelectric signal processing method, and for explanation, examples, and beneficial effects of the relevant contents, the corresponding contents in the optical soliton-based photoelectric signal processing method may be referred to, and are not described herein again.
It should be noted that, through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments. In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A photoelectric signal processing method based on optical solitons is characterized by comprising the following steps:
step 1, converting a data stream into optical solitons;
step 2, estimating frequency components of the optical solitons based on a model when the optical solitons are transmitted in the optical fiber communication system, and outputting optical soliton parameters, wherein the optical soliton parameters comprise optical pulse intensity, pulse width, optical pulse amplitude, optical wave number and carrier frequency so as to mark the speed dispersion and self-phase modulation relation of optical arc subgroup;
step 3, selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: if the wavelength of the carrier frequency is not less than a first preset value, communication is carried out through a first communication link, and positive and negative dispersion cancellation is carried out through a dispersion compensation fiber with a negative dispersion coefficient and a single mode fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, communication is carried out in a second communication link, and the second communication link selects a dispersion compensation method different from that of the first communication link to compensate the signals.
2. The optical soliton-based photoelectric signal processing method according to claim 1, wherein the step 1 includes:
and transmitting the generated data stream to a photon generator, amplifying the data stream, and modulating the electrical signal into an optical signal by an interference wavelength division multiplexer constructed by an optical fiber coupler.
3. The method for processing an optical soliton-based optical-electrical signal according to claim 1, wherein the estimating the frequency component of the optical soliton based on a model of the optical soliton during transmission in the optical fiber communication system includes:
calculating the initial chirp value of the optical solitons and the influence of optical fiber loss on optical soliton dispersion, and calculating gain;
the change in propagation speed of the amplification gain to the generation of frequency components is evaluated from the slowly varying envelope of the optical solitons in the time domain.
4. The optical soliton-based optical-electrical signal processing method according to claim 1, wherein the second communication link and the first communication link use different dispersion compensation methods.
5. The method of claim 1, wherein the first predetermined value is a specific wavelength, and the transmission rate of the wavelength signal in the first communication link is equal to the transmission rate in the second communication link.
6. The method according to claim 1, wherein when the first communication link is in communication, if the optical path length differences of the plurality of wavelengths generated by the evaluated frequency components are greater than a second predetermined value, the optical path length differences of the different wavelengths are reduced by changing the phase modulation function Φ (λ) of the binary diffraction plane.
7. The method for processing an optical soliton-based optical-electrical signal according to claim 2, wherein the first-stage dispersion cancellation is performed in the generation stage of the optical soliton generator, specifically: the low order dispersion is selectively eliminated and the retained low order dispersion is used to compensate for the effects of the high order dispersion.
8. The method of claim 6, further comprising adjusting parameters at an input end and a receiving time at an output end as training samples by a neural network or a decision tree method to optimize settings of the first preset value and the second preset value.
9. The system is characterized by comprising an optical soliton conversion module, an evaluation module, a link selection module, a reflection type prism dispersion compensation module and a generation stage dispersion elimination module;
the optical soliton conversion module is used for converting a data stream into optical solitons;
the evaluation module is used for evaluating the frequency component of the optical soliton based on a model when the optical soliton is transmitted in the optical fiber communication system and outputting optical soliton parameters, wherein the optical soliton parameters comprise optical pulse intensity, pulse width, optical pulse amplitude, optical wave number and carrier frequency;
the link selection module is used for selecting a communication link to carry out dispersion compensation on the optical solitons based on the optical soliton parameters;
the method specifically comprises the following steps: if the wavelength of the carrier frequency is not less than a first preset value, communication is carried out through a first communication link, and positive and negative dispersion cancellation is carried out through a dispersion compensation fiber with a negative dispersion coefficient and a single mode fiber with a positive dispersion coefficient which are arranged in the first communication link; otherwise, communication is carried out through a second communication link; the second communication link selects a dispersion compensation method different from that of the first communication link to compensate the signal;
the reflection type prism grating dispersion compensation mode is used for reducing the optical path difference of different wavelengths by changing the phase modulation function phi (lambda) of the binary diffraction surface when the optical path difference of multiple wavelengths generated by the evaluated frequency component is larger than a second preset value;
the generation-stage dispersion elimination module is used for selectively eliminating low-order dispersion in the generation stage of the photon generator and using the reserved low-order dispersion to compensate the influence of high-order dispersion.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471333A (en) * | 1992-09-25 | 1995-11-28 | Kokusai Denshin Denwa Kabushiki Kaisha | Optical communication system |
| CN101552643A (en) * | 2008-04-01 | 2009-10-07 | 刘超 | Design method for utilizing photonic crystal fiber to realize 10Gbit/s optical signal chromatic dispersion compensation |
| CN104037599A (en) * | 2014-06-07 | 2014-09-10 | 吉林大学 | Optical soliton generation device based on passive mode-locked ytterbium-doped fiber laser |
| CN104037600A (en) * | 2014-06-07 | 2014-09-10 | 吉林大学 | Multi-type optical soliton generation system composed of dispersion-compensation optical fiber group |
| CN104506237A (en) * | 2014-09-26 | 2015-04-08 | 国网四川省电力公司信息通信公司 | Soliton optical transmission system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2825109B2 (en) * | 1991-05-13 | 1998-11-18 | 日本電信電話株式会社 | Optical soliton transmission method |
| EP1027629A1 (en) * | 1997-10-17 | 2000-08-16 | Corning Incorporated | Soliton pulse generator |
| JP5729895B2 (en) * | 2008-01-29 | 2015-06-03 | キヤノン株式会社 | Optical pulse compressor |
| CN108347283B (en) * | 2018-03-09 | 2023-09-29 | 中国科学院西安光学精密机械研究所 | Coherent optical communication system based on microcavity optical soliton crystal frequency comb |
-
2020
- 2020-09-14 CN CN202010959331.3A patent/CN112073120B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471333A (en) * | 1992-09-25 | 1995-11-28 | Kokusai Denshin Denwa Kabushiki Kaisha | Optical communication system |
| CN101552643A (en) * | 2008-04-01 | 2009-10-07 | 刘超 | Design method for utilizing photonic crystal fiber to realize 10Gbit/s optical signal chromatic dispersion compensation |
| CN104037599A (en) * | 2014-06-07 | 2014-09-10 | 吉林大学 | Optical soliton generation device based on passive mode-locked ytterbium-doped fiber laser |
| CN104037600A (en) * | 2014-06-07 | 2014-09-10 | 吉林大学 | Multi-type optical soliton generation system composed of dispersion-compensation optical fiber group |
| CN104506237A (en) * | 2014-09-26 | 2015-04-08 | 国网四川省电力公司信息通信公司 | Soliton optical transmission system |
Non-Patent Citations (4)
| Title |
|---|
| 10-Gbit/s dispersion-managed soliton transmission over 16,500 km in standard fiber by reduction of soliton interactions;Penketh, IS; Harper, P;;《OPTICS LETTERS》;19990615;第24卷(第12期);全文 * |
| Ultrashort soliton propagation in multi-clad optical fibers with per channel data rate of 1Tb/s;Shah Md. Salimullah; Mohammad Faisal;《2015 IEEE International Conference on Telecommunications and Photonics 》;20160310;全文 * |
| 光孤子通信技术实现及色散补偿的探讨;文杰斌;《长沙通信职业技术学院学报》;20070615;全文 * |
| 光纤传输的色散补偿技术;裴丽; 董小伟; 李彬; 简伟; 简水生;《光子技术》;20030515;全文 * |
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