CN101697499A - Device and method for dispersion compensation - Google Patents
Device and method for dispersion compensation Download PDFInfo
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- CN101697499A CN101697499A CN200910211377A CN200910211377A CN101697499A CN 101697499 A CN101697499 A CN 101697499A CN 200910211377 A CN200910211377 A CN 200910211377A CN 200910211377 A CN200910211377 A CN 200910211377A CN 101697499 A CN101697499 A CN 101697499A
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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
- H04B10/2507—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
- H04B10/25133—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion including a lumped electrical or optical dispersion compensator
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/25—Distortion or dispersion compensation
- H04B2210/258—Distortion or dispersion compensation treating each wavelength or wavelength band separately
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Abstract
The invention discloses a device and a method for dispersion compensation. The method comprises a channel separation unit and a dispersion compensation unit, wherein the channel separation unit is used for separating a mixed transmission signal to a plurality of signals with different dispersion configuration requirements to be transmitted to the dispersion compensation unit; and the dispersion compensation unit is used for carrying out dispersion compensation on the signals by adopting corresponding dispersion compensation configuration according to the input dispersion configuration requirements of each signal. Different requirements of each signal channel to dispersion configuration can be met by the invention when the signals with different velocities or different modulation formats are mixed for transmission, and furthermore, the transmission performance of mixed transmission signal channels is enhanced.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of device and method of dispersion compensation.
Background technology
Upgrading along with the fiber optic transmission system transmission rate, the signal of different rates and different debugging forms mixes the application that passes in system more and more, a wherein inevitable problem is exactly that different rates and different modulating format signal consider that problem such as non-linear may need to carry out different dispersion managements, promptly carry out different dispersion compensation configurations at the section of a striding place, and traditional dispersion compensation device is that all channels are adopted same dispersion compensation configuration, can't satisfy like this and mix the different dispersion compensation configuration needs of delivering a letter, under serious situation, may cause the severe exacerbation of some channel performance.
Can't satisfy at correlation technique and to mix the different dispersion compensation configuration needs deliver a letter, the problem in that different rates or different modulating format signal mix the severe exacerbation that tends to cause some channel performance under the condition that conveys feelings does not propose effective solution at present as yet.
Summary of the invention
Mix the different dispersion compensation configuration needs of delivering a letter at satisfying, mix the problem of the severe exacerbation that tends to cause some channel performance under the condition that conveys feelings and propose the present invention at different rates or different modulating format signal, for this reason, main purpose of the present invention is to provide a kind of device and method of dispersion compensation, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of device of dispersion compensation.
Device according to dispersion compensation of the present invention comprises: the channel separation unit, be used for mix the number of delivering a letter be separated into have different chromatic dispersion configuration requirements a plurality of signals to be sent to dispersion compensation unit respectively; Dispersion compensation unit is used for adopting the corresponding dispersion compensation configuration that signal is carried out dispersion compensation according to the chromatic dispersion configuration requirement of each signal of importing.
Preferably, the channel separation unit comprises: optical demultiplexer is used for the mixed number of delivering a letter is demultiplexed into each channel; Optical multiplexer, being used for the channel that each channel satisfies predetermined condition is closed ripple is one the tunnel.
Preferably, the channel separation unit also comprises: array of photoswitch between optical demultiplexer and optical multiplexer, is used for each channel is controlled.
Preferably, dispersion compensation unit comprises a plurality of dispersion compensation modules, and wherein, a plurality of dispersion compensation modules are made of dispersion compensating fiber, and each dispersion compensation module carries out dispersion compensation to each signal of input respectively.
Preferably, device also comprises: the power equalization unit is used for that the signal behind the dispersion compensation is carried out power equalization and handles.
Preferably, the power equalization unit comprises: adjustable attenuator.
Preferably, close and involve the power equalization unit and comprise: wave multiplexer is used for that the signal behind the dispersion compensation is closed ripple and handles.
Preferably, a plurality of signals with different chromatic dispersion configuration requirements comprise: the signal with different rates or different modulating mode.
To achieve these goals, according to a further aspect in the invention, provide a kind of method of dispersion compensation.
Method according to dispersion compensation of the present invention comprises: will mix the number of delivering a letter and be separated into the signal with different chromatic dispersion configuration requirements; Adopt corresponding dispersion compensation to be configured into the diffusing compensation of the circumstances in which people get things ready for a trip respectively to signal with different chromatic dispersion configuration requirements.
Preferably, loose after the compensation the signal with different chromatic dispersion configuration requirements being adopted corresponding dispersion compensation be configured into the circumstances in which people get things ready for a trip respectively, this method also comprises: the signal with different chromatic dispersion configuration requirements behind the dispersion compensation is closed ripple and/or power equalization is handled.
Device according to dispersion compensation of the present invention comprises: the channel separation unit, be used for mix the number of delivering a letter be separated into have different chromatic dispersion configuration requirements a plurality of signals to be sent to dispersion compensation unit respectively; Dispersion compensation unit is used for adopting the corresponding dispersion compensation configuration that signal is carried out dispersion compensation according to the chromatic dispersion configuration requirement of each signal of importing.By the present invention, solve correlation technique and can't satisfy mixed different dispersion compensation configuration needs of delivering a letter, mix the problem of the severe exacerbation that tends to cause some channel performance under the condition that conveys feelings at different rates or different modulating format signal, and then can satisfy different rates or different modulating format signal and mix when passing each channel, and then improve and mix the transmission performance of delivering a letter the different requirements of chromatic dispersion configuration.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic representation of apparatus according to the preferred dispersion compensation of the embodiment of the invention;
Fig. 2 is the schematic representation of apparatus according to the dispersion compensation of the embodiment of the invention one;
Fig. 3 is the schematic representation of apparatus according to the dispersion compensation of the embodiment of the invention two;
Fig. 4 is the flow chart according to the method for the dispersion compensation of the embodiment of the invention.
Embodiment
Functional overview
Consider that correlation technique can't satisfy mixed different dispersion compensation configuration needs of delivering a letter, mix the severe exacerbation that tends to cause some channel performance under the condition that conveys feelings at different rates or different modulating format signal, the embodiment of the invention provides a kind of device and method of dispersion compensation.This device comprises: the channel separation unit, be used for mix the number of delivering a letter be separated into have different chromatic dispersion configuration requirements a plurality of signals to be sent to dispersion compensation unit respectively; Dispersion compensation unit is used for adopting the corresponding dispersion compensation configuration that signal is carried out dispersion compensation according to the chromatic dispersion configuration requirement of each signal of importing.
Mix the problem of mixing the dispersion compensation configuration contradiction of delivering a letter under the condition that conveys feelings in order to solve different rates or different modulating format signal, guarantee to mix the transmission performance of delivering a letter, the present invention has proposed a kind of dispersion compensation device at this applied environment especially, this dispersion compensation device can satisfy different rates or the different modulating format signal mixes the different requirements of when passing chromatic dispersion being disposed, and then improves and mix the transmission performance of delivering a letter.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
According to embodiments of the invention, provide a kind of device of dispersion compensation.
Fig. 1 is the schematic representation of apparatus according to the preferred dispersion compensation of the embodiment of the invention.
As shown in Figure 1, this device comprises: the channel separation unit, be used for mix the number of delivering a letter be separated into have different chromatic dispersion configuration requirements a plurality of signals to be sent to dispersion compensation unit respectively; Dispersion compensation unit is used for adopting the corresponding dispersion compensation configuration that signal is carried out dispersion compensation according to the chromatic dispersion configuration requirement of each signal of importing.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
The problem to be solved in the present invention is to mix under the condition that conveys feelings because of the uncomfortable influence that systematicness is caused of chromatic dispersion configuration for fear of different rates or different modulating format signal, guarantee to mix the transmission performance of the number of delivering a letter, at this problem, the present invention has proposed a kind of device that can carry out dispersion compensation to the mixed number of delivering a letter of different chromatic dispersion configuration requirements especially, and this device can satisfy different rates or the different modulating format signal mixes the different requirements that each channel disposes chromatic dispersion when passing.
In order to achieve the above object, the invention provides a kind of device that can carry out dispersion compensation to the mixed number of delivering a letter of different chromatic dispersion configuration requirements, preferably, this device comprises:
Channel separation unit: be used for the mixed number of delivering a letter of different chromatic dispersion configuration requirements is separated, and divided portion also do not delivered to dispersion compensation unit adopt different dispersion compensation allocation plans to carry out dispersion compensation.The input a of channel separation unit is the mixed number of delivering a letter of different chromatic dispersion configuration requirements, output b1 is the subchannel that needs the sets of signals formation of first kind of dispersion compensation configuration of employing equally, output b2 is the subchannel that needs the sets of signals formation of second kind of dispersion compensation configuration of employing equally, ..., output bn is the subchannel that needs the sets of signals formation of employing n kind dispersion compensation configuration equally.
Dispersion compensation unit: be used for adopting different dispersion compensations to be configured into the diffusing compensation of the circumstances in which people get things ready for a trip respectively to the signal of different rates and modulation system.Its input signal b1～bn adopts suitable dispersion compensation to become c1～cn afterwards respectively n subchannel for needing to adopt the subchannel of n kind dispersion compensation allocation plan respectively, is input to close and involves the power equalization unit.
Preferably, this device can also comprise closing and involves the power equalization unit: be used for closing the power equalization of ripple and interchannel through the subchannel c1～cn of different dispersion compensation schemes; Because c1～cn has passed through different dispersion compensation schemes, the insertion loss difference of its dispersion compensation schemes can cause that serious channel power is unbalanced, this will cause amplifier to enter saturated, therefore must when closing ripple, carry out power equalization, enter the signal power unanimity of each wavelength of amplifier with assurance.To send into amplifying unit and carry out signal and amplify through closing signal f behind ripple and the power equalization.
Preferably, this device can also comprise amplifying unit: amplifying signal compensates the decay in the transmission.
In following embodiment, will mix under the condition that conveys feelings being described at the different rates signal, particularly, will mix biography with 100Gb/s signal and 10Gb/s signal is that example is described.
In the present invention, except mixing biography, above-mentioned different rates of mentioning and different modulating form need carry out the situation of different dispersion compensation configurations, also may exist different routes to cause to carry out the situation of different dispersion compensations, even may in addition since route switch and to cause and need be transformed to another kind from a kind of compensation way, but different rates and different modulating form are modal two kinds of situations, and there is not good especially solution, and the situation of different routes can adopt additive method to avoid, and the present invention includes but is not limited to above different situation.
Available modulation format mainly contains in 100Gb/s WDM transmission system: (RZ)-DQPSK, the O-OFDM of difference detecting (Shuangzi carrier wave), the DP-of coherent detection (D) QPSK.Wherein the DP-of coherent detection (D) QPSK sign indicating number type all is better than two kinds of sign indicating number types in addition at aspects such as OSNR tolerance limit, dispersion tolerance, PMD tolerance limit, filter cascade characteristic back-to-back, becoming the first-selection of the long Distance Transmission sign indicating number of 100Gb/sWDM main line type, also is the selected research sign indicating number type of present OIF.
Though DP-(D) QPSK modulation format has remarkable advantages at aspects such as OSNR tolerance limit, dispersion tolerance, PMD tolerance limit, filter cascade characteristic back-to-back, its systematic function is subjected to the influence of nonlinear effect bigger.Because the non linear coefficient of dispersion compensating fiber is bigger, can bring bigger nonlinear effect, and DP-(D) QPSK can reach several ten thousand ps/nm in the Digital Signal Processing of receiving terminal to the compensation ability of chromatic dispersion, therefore for 100Gb/sDP-(D) QPSK signal, best dispersion management is configured to not carry out dispersion compensation on transmission link, and reduces the influence of nonlinear effect greatly in the scheme that transmitting terminal and receiving terminal carry out centralized compensation to chromatic dispersion.
But mix the 10Gb/s NRZ signal that passes with 100Gb/s DP-(D) QPSK signal and do not adopt Digital Signal Processing at receiving terminal, tolerance limit to chromatic dispersion is limited, therefore need in transmission link, adopt dispersion compensation module chromatic dispersion periodically to be compensated in each section of striding, at this demand, provide following two embodiment.
Embodiment one
100Gb/s DP-(D) QPSK signal and 10Gb/s NRZ signal mix and pass, and transmission channel is fixed.For convenience of description, be L with 100Gb/s DP-(D) QPSK channel number consecutively
1～L
k, 10Gb/s NRZ channel number consecutively is L
K+1～L
n, L wherein
1To L
nOrdering only be channel number, irrelevant with channel wavelength.
Fig. 2 is the schematic representation of apparatus according to the dispersion compensation of the embodiment of the invention one.
As shown in Figure 2, this device can comprise with the lower part:
Channel separation unit: comprise optical demultiplexer (ODU), optical multiplexer 1 (OMU1) and optical multiplexer 2 (OMU2), be demultiplexed into each channel behind the mixed signal input ODU, wherein 100Gb/s DP-(D) QPSK signalling channel L
1～L
kBeing conveyed into OMU1, to close ripple be one the tunnel, with 10Gb/s NRZ signalling channel L
K+1～L
nSending into OMU2, to close ripple be one the tunnel.Because transmission channel is more fixing, adopt optical demultiplexer and optical multiplexer to realize channel separation in the present embodiment, for channel signal speed and the frequent situation about changing of modulation format, but reference example two.
Dispersion compensation unit: comprise dispersion compensation module.Dispersion compensation module is made of dispersion compensating fiber, is used for the dispersion compensation that OMU2 closes the 10Gb/s NRZ signalling channel group of ripple output, according to the length configuration of the link section of striding.100Gb/sDP-(D) the QPSK signalling channel group of OMU1 output is not then carried out dispersion compensation.Dispersion compensation unit also can adopt other modes to realize dispersion compensation, as Chirp Bragg grating (FBG) etc.
In the present invention, the method that can carry out dispersion compensation can be such as dispersion compensating fiber, fiber grating, and photonic crystal fibers etc. the present invention includes but are not limited to above embodiment.
Preferably, this device can also comprise closing and involves the power equalization unit: comprise adjustable attenuator and wave multiplexer.Because the insertion loss of dispersion compensating fiber is big, carried out the channel of dispersion compensation and do not passed through the channel light power difference of dispersion compensation also bigger, therefore use adjustable attenuator to be used for disposing each interchannel power equalization in 100Gb/s DP-(D) QPSK signalling channel one tunnel, and close ripple.
Preferably, this device can also comprise amplifying unit: close signal behind the ripple and send into EDFA and carry out light amplification with the power attenuation in the compensating signal transmission.
Embodiment two
100Gb/s DP-(D) QPSK signal and 10Gb/s NRZ signal mix and pass, and each channel signal transmission rate and modulation format are indefinite, change through regular meeting.
Fig. 3 is the schematic representation of apparatus according to the dispersion compensation of the embodiment of the invention two.
As shown in Figure 3, the device of this dispersion compensation comprises with the lower part: channel separation unit, dispersion compensation unit, close and involve power equalization unit and amplifying unit.
Below will specifically describe various piece:
Channel separation unit: comprise optical demultiplexer (ODU), array of photoswitch, optical multiplexer 1 (OMU1) and optical multiplexer 2 (OMU2).Be demultiplexed into each channel lambda behind the mixed signal input ODU
1～λ
nBecause each channel signal transmission rate and modulation format are indefinite, change through regular meeting, thereby can cause each dispersion compensation of channels allocation plan to change, therefore in the channel separation unit, adopt array of photoswitch flexibly passage to be managed.N behind an ODU demultiplexing channel lambda
1～λ
nSend into array of photoswitch, chromatic dispersion configuration mode according to its transmission rate and modulation format requirement, control array of photoswitch flexibly, all 100Gb/sDP-(D) QPSK signal allocation is input to OMU1, all 10Gb/s NRZ signal allocation are input to OMU2, the signal that closes ripple through OMU1 is A1, the signal that closes ripple through OMU2 is A2, then A1 all is 100Gb/s DP-(D) QPSK signal, the chromatic dispersion that requires is configured to not carry out in the link dispersion compensation, carry out dispersion compensation again at receiving terminal, A2 all is a 10Gb/s NRZ signal, and the chromatic dispersion of requirement is configured to carry out dispersion compensation according to the length of the section of striding.Its A1, A2 are sent into dispersion compensation unit respectively.
Dispersion compensation unit: comprise dispersion compensation module.Dispersion compensation module is made of dispersion compensating fiber, is used for the dispersion compensation that OMU2 closes the 10Gb/s NRZ signalling channel group of ripple output, according to the length configuration of the link section of striding.100Gb/sDP-(D) the QPSK signalling channel group of OMU1 output is not then carried out dispersion compensation.Dispersion compensation unit also can adopt other modes to realize dispersion compensation.
Close and involve the power equalization unit: comprise adjustable attenuator and wave multiplexer.Because the insertion loss of dispersion compensating fiber is big, carried out the channel of dispersion compensation and do not passed through the channel light power difference of dispersion compensation also bigger, therefore use adjustable attenuator to be used for disposing each interchannel power equalization in 100Gb/s DP-(D) QPSK signalling channel one tunnel, and close ripple.
Amplifying unit: close signal behind the ripple and send into EDFA and carry out light amplification with the power attenuation in the compensating signal transmission.
According to embodiments of the invention, provide a kind of method of dispersion compensation.
Fig. 4 is the flow chart according to the method for the dispersion compensation of the embodiment of the invention.
As shown in Figure 4, this method comprises that following step S402 is to step S404:
Step S402 is separated into the signal with different chromatic dispersion configuration requirements with the mixed number of delivering a letter;
Step S404 adopts corresponding dispersion compensation to be configured into the diffusing compensation of the circumstances in which people get things ready for a trip respectively to the signal with different chromatic dispersion configuration requirements.
Preferably, loose after the compensation the signal with different chromatic dispersion configuration requirements being adopted corresponding dispersion compensation be configured into the circumstances in which people get things ready for a trip respectively, this method also comprises: the signal with different chromatic dispersion configuration requirements behind the dispersion compensation is closed ripple and/or power equalization is handled.
As can be seen from the above description, the present invention can satisfy different rates or the different modulating format signal mixes the different requirements that each channel disposes chromatic dispersion when passing, and then improves and mix the transmission performance of delivering a letter.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the device of a dispersion compensation is characterized in that, comprising:
The channel separation unit, be used for mix the number of delivering a letter be separated into have different chromatic dispersion configuration requirements a plurality of signals to be sent to dispersion compensation unit respectively;
Dispersion compensation unit is used for adopting the corresponding dispersion compensation configuration that signal is carried out dispersion compensation according to the chromatic dispersion configuration requirement of each signal of importing.
2. device according to claim 1 is characterized in that, described channel separation unit comprises:
Optical demultiplexer is used for the described mixed number of delivering a letter is demultiplexed into each channel;
Optical multiplexer, being used for the channel that described each channel satisfies predetermined condition is closed ripple is one the tunnel.
3. device according to claim 2 is characterized in that, described channel separation unit also comprises:
Array of photoswitch between described optical demultiplexer and described optical multiplexer, is used for described each channel is controlled.
4. device according to claim 1, it is characterized in that described dispersion compensation unit comprises a plurality of dispersion compensation modules, wherein, described a plurality of dispersion compensation module is made of dispersion compensating fiber, and each dispersion compensation module carries out dispersion compensation to described each signal of input respectively.
5. according to each described device in the claim 1 to 4, it is characterized in that described device also comprises:
The power equalization unit is used for that the described signal behind the dispersion compensation is carried out power equalization and handles.
6. device according to claim 5 is characterized in that, described power equalization unit comprises:
Adjustable attenuator.
7. according to each described device of claim 1 to 4, it is characterized in that described closing involved the power equalization unit and comprised:
Wave multiplexer is used for that the described signal behind the dispersion compensation is closed ripple and handles.
8. according to each described device of claim 1 to 4, it is characterized in that described a plurality of signals with different chromatic dispersion configuration requirements comprise:
Signal with different rates or different modulating mode.
9. the method for a dispersion compensation is characterized in that, comprising:
The mixed number of delivering a letter is separated into the signal with different chromatic dispersion configuration requirements;
Adopt corresponding dispersion compensation to be configured into the diffusing compensation of the circumstances in which people get things ready for a trip respectively to described signal with different chromatic dispersion configuration requirements.
10. method according to claim 9 is characterized in that, looses after the compensation described signal with different chromatic dispersion configuration requirements being adopted corresponding dispersion compensation be configured into the circumstances in which people get things ready for a trip respectively, and described method also comprises:
Described signal with different chromatic dispersion configuration requirements behind the dispersion compensation is closed ripple and/or power equalization processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910211377.0A CN101697499B (en) | 2009-10-30 | 2009-10-30 | The device and method of dispersion compensation |
| PCT/CN2010/071818 WO2010145282A1 (en) | 2009-10-30 | 2010-04-16 | Device and method for dispersion compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910211377.0A CN101697499B (en) | 2009-10-30 | 2009-10-30 | The device and method of dispersion compensation |
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| CN101697499B CN101697499B (en) | 2015-10-21 |
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| WO (1) | WO2010145282A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108512601A (en) * | 2017-02-28 | 2018-09-07 | 华为技术有限公司 | A kind of method and apparatus for returning access network more |
| CN109067463A (en) * | 2018-08-01 | 2018-12-21 | 武汉光迅科技股份有限公司 | Zoom out optical fiber dispersion compensation device and method, remote access product, electronic equipment, non-transient computer readable storage medium |
| WO2020024544A1 (en) * | 2018-08-01 | 2020-02-06 | 武汉光迅科技股份有限公司 | Dispersion compensation device and method |
| CN112684541A (en) * | 2021-01-19 | 2021-04-20 | 浙江大学 | Cascade type adjustable silicon-based Bragg grating dispersion compensator |
| CN113949455A (en) * | 2021-09-16 | 2022-01-18 | 武汉光迅科技股份有限公司 | Optical communication device and optical communication system |
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| CN1361950A (en) * | 1999-07-19 | 2002-07-31 | 住友电气工业株式会社 | Dispersion compensation system |
| CN1486011A (en) * | 2002-09-28 | 2004-03-31 | 华为技术有限公司 | Apparatus and method for in-line dispersion compensating of mixing rate system |
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- 2009-10-30 CN CN200910211377.0A patent/CN101697499B/en active Active
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- 2010-04-16 WO PCT/CN2010/071818 patent/WO2010145282A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1361950A (en) * | 1999-07-19 | 2002-07-31 | 住友电气工业株式会社 | Dispersion compensation system |
| CN1486011A (en) * | 2002-09-28 | 2004-03-31 | 华为技术有限公司 | Apparatus and method for in-line dispersion compensating of mixing rate system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512601A (en) * | 2017-02-28 | 2018-09-07 | 华为技术有限公司 | A kind of method and apparatus for returning access network more |
| CN109067463A (en) * | 2018-08-01 | 2018-12-21 | 武汉光迅科技股份有限公司 | Zoom out optical fiber dispersion compensation device and method, remote access product, electronic equipment, non-transient computer readable storage medium |
| WO2020024543A1 (en) * | 2018-08-01 | 2020-02-06 | 武汉光迅科技股份有限公司 | Remote optical fiber dispersion compensation device and method, remote access device, electronic device and non-transient computer-readable storage medium |
| WO2020024544A1 (en) * | 2018-08-01 | 2020-02-06 | 武汉光迅科技股份有限公司 | Dispersion compensation device and method |
| US11290185B2 (en) * | 2018-08-01 | 2022-03-29 | Accelink Technologies Co., Ltd | Remote optical fiber dispersion compensation device and method, remote access device, electronic device and non-transient computer-readable storage medium |
| CN112684541A (en) * | 2021-01-19 | 2021-04-20 | 浙江大学 | Cascade type adjustable silicon-based Bragg grating dispersion compensator |
| CN113949455A (en) * | 2021-09-16 | 2022-01-18 | 武汉光迅科技股份有限公司 | Optical communication device and optical communication system |
| CN113949455B (en) * | 2021-09-16 | 2023-02-14 | 武汉光迅科技股份有限公司 | Optical communication device and optical communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010145282A1 (en) | 2010-12-23 |
| CN101697499B (en) | 2015-10-21 |
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