CN106788751A - One kind the application two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order and method - Google Patents
One kind the application two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order and method Download PDFInfo
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- CN106788751A CN106788751A CN201611085341.9A CN201611085341A CN106788751A CN 106788751 A CN106788751 A CN 106788751A CN 201611085341 A CN201611085341 A CN 201611085341A CN 106788751 A CN106788751 A CN 106788751A
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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
- H04B10/2537—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to scattering processes, e.g. Raman or Brillouin scattering
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
- H04B10/2916—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using Raman or Brillouin amplifiers
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Abstract
The invention discloses a kind of fiber-optic communications traffic method and system of the two-way Raman amplifiction of application multi wavelength pumping high-order, it is applied to overlength span optical fiber telecommunications system and ordinary optic fibre communication system, a pump light in the two-way Higher-order Raman amplifier of multi wavelength pumping can be reduced, relative intensity noise is big in solving current multi wavelength pumping Higher-order Raman amplification process, the low problem of gain efficiency, and the cost of system is reduced simultaneously.One is reduced on forward direction Higher-order Raman amplifier with the immediate pump light of signal light wavelength, a reflection-type optical fiber grating filter is inserted respectively to the input of Higher-order Raman amplifier with after in the output end of forward direction Higher-order Raman amplifier, and the centre wavelength of fiber grating is the wavelength of that pump light being reduced.Use the method, the pump light number of Higher-order Raman amplifier can be reduced, reduces cost, simultaneously, reduce the relative intensity noise of Higher-order Raman amplifier, and backward gain and the forward gain efficiency of Higher-order Raman amplifier are greatly improved, while extending the transmission range of two-way Higher-order Raman optical fiber telecommunications system.
Description
Technical field
The present invention relates to fiber optic communication field, more specifically to for the two-way Higher-order Raman optical fiber of multi wavelength pumping
The optical fiber telecommunications system of amplification, especially in overlength span optical fiber telecommunications system.
Background technology
With Fibre Optical Communication Technology development, it is necessary to single spanning distance without electronic relay fibre-optic transmission system (FOTS) distance it is more and more long,
Transmission rate more and more higher.In this case, it is best selection typically using two-way raman amplifier.Two-way Raman fiber
The optical fiber telecommunications system of amplification is divided into according to the quantity of the pump light of raman amplifier：Single order Raman amplifiction and Higher-order Raman are put
Greatly.Wherein, Higher-order Raman amplifies because employing multiple pump lights, can significantly expand the gain of the flashlight for needing exaggerated
Spectrum, and cause that gain spectral is relatively flat according to the allotment of the power of each pump light, it is the main flow side of current optical fiber amplification system
Case.
But, since it is desired that many pump lights, the luminous power ripple of each pump light in multi wavelength pumping Higher-order Raman amplifier
Moving brought relative intensity noise and all passing to needs exaggerated flashlight, results in the need for the light of exaggerated flashlight
Signal to noise ratio is substantially reduced, and can cause the deterioration of exaggerated signal noise.And this is not in long-distance optical fiber communication system
Allow, patent of the present invention reduces flashlight relative intensity noise by optimizing wavelength and energy reversal.Pump light is to flashlight
Relative intensity noise (RIN) Transfer Formula be：
Forward pumping：
Backward pump：Wherein RsAnd RpRespectively
It is the relative intensity noise with the flashlight of dB/Hz units and pump light, GRIt is Raman gain, vsAnd vpIt is flashlight and pumping
The group velocity of light, αsAnd αpIt is the loss of flashlight and pump light,It is the effective length of optical fiber, L is optical fiber
Length, D is the dispersion parameters of optical fiber, and Δ λ is the difference of the wavelength of pump light and flashlight, and f is pump light relative intensity noise
Frequency.It can be seen that, forward pumping is relevant all with Raman gain, pumping optical loss coefficient, transmission range with the RIN of backward pump；Before
The RIN amplified to pumping Raman is relevant also with the wavelength spacing of fibre-optical dispersion, pump light and flashlight.
In order to reduce RIN noises, extend transmission distance, and do not reduce the gain of Raman amplifiction, patent of the present invention is used
Increase the difference of the group velocity between flashlight and pump light, increase spacing between the flashlight that pump light and needing amplifies but
It is the transmission of the method suppression RIN noises for not influenceing pumping light amplification again simultaneously.
The content of the invention
The present invention propose a kind of fiber-optic communications traffic method for being applied to the two-way Raman amplifiction of multi wavelength pumping high-order and
System,
A kind of fiber-optic communications traffic method for being applied to the two-way Raman amplifiction of multi wavelength pumping high-order, it is characterised in that should
Method is comprised the following steps：
Step 1, the two-way raman amplifier of multi wavelength pumping high-order includes forward pumping module and backward pump module, two
All there is the pump light of multiple wavelength, removing forward pumping module and backward pump module medium wavelength distance needs to amplify in module
The nearest pump light of signal light wavelength；
Step 2, accesses a reflection-type optical fiber behind the output end of the two-way raman amplifier forward pumping module of high-order
Grating filter one, reflection kernel wavelength and the pump wavelength (λ removed in step 1 of the reflection-type optical fiber gratingpN) one
Cause, the reflection bandwidth of the 3dB of the reflection-type optical fiber grating filter is less than the wavelength spacing between original multiple pump light, center
Reflectivity at wavelength should be greater than 70%；
Step 3, accesses a reflection type optical before the input of the backward pump module of the two-way raman amplifier of high-order
Fine grating filter (2), reflection kernel wavelength and the pump wavelength removed in step (1) of the reflection-type optical fiber grating
(λpN) consistent, the 3dB reflection bandwidths of the fiber grating are less than the wavelength spacing between original multiple pump lights, central wavelength
Reflectivity should be greater than 70%；
Step 4, the luminous power of remaining pump light needs to readjust power configuration in the two-way raman amplifier of high-order,
Specifically adjust according to actual transmissions system to determine.
In a kind of above-mentioned fiber-optic communications traffic method for being applied to the two-way Raman amplifiction of multi wavelength pumping high-order, the step
In rapid 3, the reflection-type optical fiber grating filtering inserted after the output end of the forward pumping module of the two-way raman amplifier of high-order
The reflection kernel wavelength of device (1) the reflection-type optical fiber grating and the pump wavelength (λ for removingpN) consistent, the reflection-type optical fiber light
, less than the wavelength spacing between original multiple pump light, the reflectivity of central wavelength should be big for the 3dB reflection bandwidths of grating filter
In 70%,
In a kind of above-mentioned fiber-optic communications traffic method for being applied to the two-way Raman amplifiction of multi wavelength pumping high-order, the step
In rapid 3, pump wavelength includes 1420nm, 1440nm, 1460nm, 1480nm and 1500nm, and flashlight is 1550nm, then reflect
The centre wavelength of the reflection of type fiber grating 1 is 1500nm, and three dB bandwidth is less than 20nm.
In a kind of above-mentioned fiber-optic communications traffic method for being applied to the two-way Raman amplifiction of multi wavelength pumping high-order, the step
In rapid 3, a reflection-type optical fiber grating filter two is accessed in the rear input to raman amplifier, in the reflection of fiber grating
Cardiac wave pump wavelength (the λ with removal longpN) consistent, 3dB reflection bandwidths are less than the wavelength spacing between original multiple pump lights,
The reflectivity of central wavelength should be greater than 70%.
In a kind of above-mentioned fiber-optic communications traffic method for being applied to the two-way Raman amplifiction of multi wavelength pumping high-order, high-order is double
In to raman amplifier forward pumping module, forward pumping module and backward pump module medium wavelength distance are removed according to step 1
After the nearest pump light of flashlight, the luminous power of remaining pump light needs to readjust, and specifically adjusts according to actual transmissions
The gain that flashlight needs in system determines, increases the power of residual pump light, keeps the gain of flashlight constant.
One kind is applied to the two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order, it is characterised in that
In multi wavelength pumping Higher-order Raman amplifier, removing distance needs the nearest pump light of the signal light wavelength for amplifying, such as：High-order
Multiple pump wavelengths of raman amplifier are respectively 1420nm, 1440nm, 1460nm, 1480nm and 1500nm, it is necessary to be put
Big flashlight is 1550nm, then what is removed is the pump light of 1500nm.The system includes：
The reflection-type optical fiber grating filter two of reflection-type optical fiber grating filter one is sequentially connected：
Signal projector：For emission spectrum signal；
Raman amplifier forward pumping module：For preceding to raman pump light to being injected in transmission link；
Reflection-type optical fiber grating filter one：After being arranged on the output end of the two-way raman amplifier forward pumping module of high-order
End, the spontaneous Raman scattering light for reflecting reverse transfers further amplifies flashlight using this part reflected light, improves energy
Utilization ratio；
Transmission Fibers：For the transmission of optical signal；
Reflection-type optical fiber grating filter two：It is arranged on the input of the backward pump module in the two-way raman amplifier of high-order
End front end, the spontaneous Raman scattering light for reflecting fl transmission further amplifies flashlight using this part reflected light, improves
Energy utilization efficiency；
Raman amplifier backward pump module：For to injecting backward raman pump light in transmission link；
Signal receiver：For receiving optical signal, reduction transmission data.
In a kind of above-mentioned application two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order, reflection-type
The reflection kernel wavelength of fiber grating 1 and pump wavelength (λ removed in step 1pN) consistent, reflection-type optical fiber grating filter
The reflection bandwidth of the 3dB of ripple device should be greater than less than the wavelength spacing between original multiple pump light, the reflectivity of central wavelength
70%.
In a kind of above-mentioned application two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order, reflection-type
The reflection kernel wavelength of fiber grating 2 and pump wavelength (λ removed in step 1pN) consistent, reflection-type optical fiber grating filter
The reflection bandwidth of the 3dB of ripple device should be greater than less than the wavelength spacing between original multiple pump light, the reflectivity of central wavelength
70%；
The present invention increased between pump light and flashlight by removing the pump light minimum with signal light-wave long spacing
Walk off, can effectively suppress the relative intensity noise (RIN) of flashlight；Two reflection-type optical fiber grating filters of addition can be with profit
The wavelength produced by Raman scattering with pump light is in λpNNeighbouring light is amplified to signal, improves energy utilization efficiency.
Patent of the present invention has advantages below：1, a pump light is reduced, improve energy utilization efficiency；2, pump light and
Wavelength spacing between flashlight increases, and suppresses relative intensity noise (RIN)；3, multi wavelength pumping can be in relatively wide frequency spectrum
In the range of obtain flat gain；4, suppress double Rayleigh scattering noise, so as to improve the noiseproof feature of amplifier
Brief description of the drawings
Fig. 1 is whole system block diagram.
Fig. 2 is the spectrogram of the pump light of two-way Higher-order Raman.
Fig. 3 is the company of the reflection-type optical fiber grating 1 and system inserted after two-way Higher-order Raman amplifier forward pumping module
Map interlinking (λpNIt is the pump wavelength minimum with signal light-wave long spacing, dotted line is represented and removed, the center of reflection fiber grating 1
Wavelength is λpN)。
Fig. 4 is the company of the reflection-type optical fiber grating 2 and system inserted before two-way Higher-order Raman amplifier backward pump module
Map interlinking (λpNIt is the pump wavelength minimum with signal light-wave long spacing, dotted line is represented and removed, in reflection-type optical fiber grating 2
The a length of λ of cardiac wavepN。)。
Fig. 5 is the port schematic diagram of reflection-type optical fiber grating 1 inserted after forward pumping raman amplifier (in λpNNeighbouring drawing
The entry port 2 of graceful scattering light is reflected back toward Transmission Fibers；The forward pumping light entry port 1 of flashlight and raman amplifier is saturating
It is mapped to port 2).
The port schematic diagram of reflection-type optical fiber grating 2 that Fig. 6 is inserted before being backward pump raman amplifier is (in λpNNeighbouring
The entry port 1 of Raman diffused light is reflected back toward Transmission Fibers；Exaggerated flashlight entry port 1 is needed to be transmitted to port 2；
Raman amplifier backward pump light entry port 2 is transmitted to port 1).
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, not
For limiting the present invention.As long as additionally, technical characteristic involved in invention described below each implementation method that
Conflict is not constituted between this can be just mutually combined.
First, specifically, it is as shown in Figure 1 system block diagram, including following steps：
1st, in signal transmitter, data are loaded on light wave, and flashlight can be Single wavelength, or many ripples
It is long, such as signal transmitter can use the emission port in the fast scientific and technological RTXM298-301 transceiver modules of light launch carrier wave for
1550nm, form is the 40G optical signals of NRZ-DPSK；
2nd, flashlight by raman amplifier forward pumping module, forward pumping light and signal are optically coupling to same light
In fibre.The light minimum with signal light-wave long spacing, such as Nu-Wave Optima are removed in forward pumping lightTMSE24 Ramans
Pump module can provide 7 pump lights of 1400nm to 1500nm, and we remove the pump light of 1500nm, only retain 1400nm
To 6 pump lights of 1480nm.
3rd, flashlight and forward pumping light transmission cross reflection-type optical fiber grating 1, the centre wavelength root of reflection-type optical fiber grating
Determine according to pump wavelength, the condition of the inside of correspondence 2, reflection-type optical fiber grating 1 can select the Shanghai sky amount limited public affairs of optoelectronic device
The AUT.FBG.S.0.03 series of products of department, reflection kernel wavelength is 1500nm, and three dB bandwidth is 1nm, and centre wavelength reflectivity is big
In 70%.
4th, flashlight and pump light enter Transmission Fibers transmitted through reflection-type optical fiber grating 1, and Transmission Fibers can be from mark
Quasi-monomode fiber, such asSMF-28e；Also ultra-low-loss fiber is can select, such as
EX2000。
5th, in the presence of Raman scattering, flashlight is amplified in pumping optical transport, while can be near 1500nm
Scattering light, scattering light reflection type fiber grating 2 is produced to be reflected back Transmission Fibers reverse transfer, can be carried out to flashlight again
Amplify, and this part light is the equal of backward pump light, although and wavelength is close from flashlight, but will not cause the deterioration of RIN；
Reflection-type optical fiber grating 2 can select the AUT.FBG.S.0.03 series of products of Shanghai Hao Liang optoelectronic devices Co., Ltd, in reflection
The a length of 1500nm of cardiac wave, three dB bandwidth is 1nm, and centre wavelength reflectivity is more than 70%.
6 is similar with forward pumping, and the backward pump module of raman amplifier is also adopted by Nu-Wave OptimaTMSE24,
And remove the pump light of 1500nm；Backward pump light transmission is crossed reflection-type optical fiber grating 2 and is entered in Transmission Fibers, in excited Raman
To signal light amplification under scattering process, and Raman diffused light is produced near 1500nm；This some scattered light can reflection type
Fiber grating 1 is reflected back in Transmission Fibers, then flashlight is amplified；This part light is the equal of forward pumping light, and ripple
Long range signals light is close, but due to have accumulated very big dispersion in scattering light reverse transfers, therefore its RIN for causing is deteriorated
Also very little.
7th, flashlight is by the solution wavelength division multiplexer arriving signal receiver in raman amplifier backward pump module, can be with
By the receiving port in the fast scientific and technological RTXM298-301 transceiver modules of signal soft exchange light, by the data convert on flashlight out.
2nd, it is below, using the system architecture of the above method, in multi wavelength pumping Higher-order Raman amplifier, to remove distance
The pump light for needing the signal light wavelength for amplifying nearest, such as：Multiple pump wavelengths of Higher-order Raman amplifier are respectively
, it is necessary to exaggerated flashlight is 1550nm, then what is removed is for 1420nm, 1440nm, 1460nm, 1480nm and 1500nm
The pump light of 1500nm.The system includes：
The reflection-type optical fiber grating filter two of reflection-type optical fiber grating filter one is sequentially connected：
Signal projector：For emission spectrum signal；
Raman amplifier forward pumping module：For preceding to raman pump light to being injected in transmission link；
Reflection-type optical fiber grating filter one：After being arranged on the output end of the two-way raman amplifier forward pumping module of high-order
End, the spontaneous Raman scattering light for reflecting reverse transfers further amplifies flashlight using this part reflected light, improves energy
Utilization ratio；
Transmission Fibers：For the transmission of optical signal；
Reflection-type optical fiber grating filter two：It is arranged on the input of the backward pump module in the two-way raman amplifier of high-order
End front end, the spontaneous Raman scattering light for reflecting fl transmission further amplifies flashlight using this part reflected light, improves
Energy utilization efficiency；
Raman amplifier backward pump module：For to injecting backward raman pump light in transmission link；
Signal receiver：For receiving optical signal, reduction transmission data.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of fiber-optic communications traffic method of the two-way Raman amplifiction of application multi wavelength pumping high-order, it is characterised in that the method
Comprise the following steps：
Step 1, the two-way raman amplifier of multi wavelength pumping high-order includes forward pumping module and backward pump module, two modules
In all there is the pump light of multiple wavelength, remove forward pumping module and backward pump module medium wavelength distance need the letter that amplifies
Number nearest pump light of optical wavelength；
Step 2, accesses a reflection-type optical fiber grating behind the output end of the two-way raman amplifier forward pumping module of high-order
Wave filter one, reflection kernel wavelength and the pump wavelength (λ removed in step 1 of the reflection-type optical fiber gratingpN) consistent, should
The reflection bandwidth of the 3dB of reflection-type optical fiber grating filter is less than the wavelength spacing between original multiple pump light, centre wavelength
The reflectivity at place should be greater than 70%；
Step 3, accesses a reflection-type optical fiber light before the input of the backward pump module of the two-way raman amplifier of high-order
Grating filter (2), reflection kernel wavelength and the pump wavelength (λ removed in step (1) of the reflection-type optical fiber gratingpN) one
Cause, the 3dB reflection bandwidths of the fiber grating are less than the wavelength spacing between original multiple pump light, the reflectivity of central wavelength
Should be greater than 70%；
Step 4, the luminous power of remaining pump light needs to readjust power configuration in the two-way raman amplifier of high-order, specifically
Adjustment determined according to actual transmissions system.
2. the fiber-optic communications traffic side of a kind of two-way Raman amplifiction of application multi wavelength pumping high-order according to claim 1
Method, it is characterised in that：In the step 3, inserted after the output end of the forward pumping module of the two-way raman amplifier of high-order
Reflection-type optical fiber grating filter (1) the reflection-type optical fiber grating reflection kernel wavelength with remove pump wavelength (λpN)
Unanimously, the 3dB reflection bandwidths of the reflection-type optical fiber grating filter are less than the wavelength spacing between original multiple pump light, center
Reflectivity at wavelength should be greater than 70%.
3. the fiber-optic communications traffic side of a kind of two-way Raman amplifiction of application multi wavelength pumping high-order according to claim 1
Method, it is characterised in that：In the step 3, pump wavelength includes 1420nm, 1440nm, 1460nm, 1480nm and 1500nm,
Flashlight is 1550nm, then the centre wavelength of the reflection of reflection-type optical fiber grating 1 is 1500nm, and three dB bandwidth is less than 20nm.
4. the fiber-optic communications traffic side of a kind of two-way Raman amplifiction of application multi wavelength pumping high-order according to claim 1
Method, it is characterised in that：It is characterized in that：In the step 3, a reflection type optical is accessed in the rear input to raman amplifier
Fine grating filter two, the reflection kernel wavelength of fiber grating and the pump wavelength (λ for removingpN) consistent, 3dB reflection bandwidths are small
Wavelength spacing between original multiple pump light, the reflectivity of central wavelength should be greater than 70%.
5. the fiber-optic communications traffic side of a kind of two-way Raman amplifiction of application multi wavelength pumping high-order according to claim 1
Method, it is characterised in that：In the two-way raman amplifier forward pumping module of high-order, according to step 1 remove forward pumping module and after
After the nearest pump light of pump module medium wave long range signals light, the luminous power of remaining pump light needs to readjust, and has
The adjustment of body determines that increase the power of residual pump light, holding is believed according to the gain that flashlight in actual transmissions system needs
The gain of number light is constant.
6. it is a kind of to apply the two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order, it is characterised in that many
In wavelength pumping Higher-order Raman amplifier, removing distance needs the nearest pump light of the signal light wavelength for amplifying, such as：Higher-order Raman
Multiple pump wavelengths of amplifier are respectively 1420nm, 1440nm, 1460nm, 1480nm and 1500nm, it is necessary to exaggerated
Flashlight is 1550nm, then what is removed is the pump light of 1500nm, and the system includes：
The reflection-type optical fiber grating filter two of reflection-type optical fiber grating filter one is sequentially connected：
Signal projector：For emission spectrum signal；
Raman amplifier forward pumping module：For preceding to raman pump light to being injected in transmission link；
Reflection-type optical fiber grating filter one：The output end rear end of the two-way raman amplifier forward pumping module of high-order is arranged on,
Spontaneous Raman scattering light for reflecting reverse transfers, flashlight is further amplified using this part reflected light, improves energy profit
Use efficiency；
Transmission Fibers：For the transmission of optical signal；
Reflection-type optical fiber grating filter two：It is arranged on before the input of the backward pump module of the two-way raman amplifier of high-order
End, the spontaneous Raman scattering light for reflecting fl transmission further amplifies flashlight using this part reflected light, improves energy
Utilization ratio；
Raman amplifier backward pump module：For to injecting backward raman pump light in transmission link；
Signal receiver：For receiving optical signal, reduction transmission data.
7. one kind according to claim 6 applies the two-way raman amplification fiber communications system of multi-wavelength bidirectional pumping high-order
System, it is characterised in that the reflection kernel wavelength of reflection-type optical fiber grating 1 and pump wavelength (λ removed in step 1pN) one
Cause, the reflection bandwidth of the 3dB of the reflection-type optical fiber grating filter is less than the wavelength spacing between original multiple pump light, center
Reflectivity at wavelength should be greater than 70%.
8. one kind according to claim 6 applies the two-way raman amplification fiber communications system of multi-wavelength bidirectional pumping high-order
System, it is characterised in that the reflection kernel wavelength of reflection-type optical fiber grating 2 and pump wavelength (λ removed in step 1pN) one
Cause, the reflection bandwidth of the 3dB of the reflection-type optical fiber grating filter is less than the wavelength spacing between original multiple pump light, center
Reflectivity at wavelength should be greater than 70%.
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| CN108173595A (en) * | 2017-12-07 | 2018-06-15 | 国网新疆电力有限公司信息通信公司 | Transmission method and system applied to over-long span fiber optic communication |
| CN109525320A (en) * | 2019-01-04 | 2019-03-26 | 电子科技大学 | A kind of full optic relay device based on regeneration Raman technology |
| WO2020107994A1 (en) * | 2018-11-27 | 2020-06-04 | 苏州大学 | Optical amplifier rearrangement method for optical fiber-upgraded elastic optical network |
| CN112543063A (en) * | 2019-09-23 | 2021-03-23 | 中兴通讯股份有限公司 | Output power adjusting method and device and amplifier |
| CN113726423A (en) * | 2021-11-03 | 2021-11-30 | 北京邮电大学 | Raman two-way pump and two-way OTDR (optical time Domain reflectometer) detection recovery system and optical network |
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| CN112543063A (en) * | 2019-09-23 | 2021-03-23 | 中兴通讯股份有限公司 | Output power adjusting method and device and amplifier |
| CN113726423A (en) * | 2021-11-03 | 2021-11-30 | 北京邮电大学 | Raman two-way pump and two-way OTDR (optical time Domain reflectometer) detection recovery system and optical network |
| CN113726423B (en) * | 2021-11-03 | 2022-02-15 | 北京邮电大学 | Raman two-way pump and two-way OTDR (optical time Domain reflectometer) detection recovery system and optical network |
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Inventor after: Huang Yong Inventor after: Xu Jian Inventor after: Yu Jiekui Inventor after: Liu Jiasheng Inventor after: He Guoliang Inventor after: Yu Changsheng Inventor after: Gu Benyan Inventor after: Wang Qing Inventor after: Xiao Kun Inventor after: Li Weihua Inventor after: Lu He Inventor after: Wu Zhen Inventor after: Xia Xiaomeng Inventor after: Li Haitao Inventor after: Huang Liyan Inventor before: Li Haitao Inventor before: He Guoliang Inventor before: Yu Changsheng Inventor before: Gu Benyan Inventor before: Li Weihua Inventor before: Lu He Inventor before: Deng Li Inventor before: Xia Xiaomeng Inventor before: Huang Liyan Inventor before: Xu Jian Inventor before: Yu Jiekui Inventor before: Liu Jiasheng |
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Effective date of registration: 20170713 Address after: 100761 Beijing city Xicheng District Baiguang road two No. 1 Applicant after: STATE GRID INFORMATION & TELECOMMUNICATION BRANCH Applicant after: Guangxun Science-Technology Co., Ltd., Wuhan Address before: 430205 Hubei Province, Wuhan city Jiangxia District canglongdao Development Zone Lake Road No. 1 Applicant before: Guangxun Science-Technology Co., Ltd., Wuhan |
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Application publication date: 20170531 |