CN102045114A - Method for automatically compensating ascending optical loss gain and near end of optical fiber repeater - Google Patents
Method for automatically compensating ascending optical loss gain and near end of optical fiber repeater Download PDFInfo
- Publication number
- CN102045114A CN102045114A CN2010106186788A CN201010618678A CN102045114A CN 102045114 A CN102045114 A CN 102045114A CN 2010106186788 A CN2010106186788 A CN 2010106186788A CN 201010618678 A CN201010618678 A CN 201010618678A CN 102045114 A CN102045114 A CN 102045114A
- Authority
- CN
- China
- Prior art keywords
- optical
- value
- gain
- combiner
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention is suitable for the field of mobile communication, and provides a method for automatically compensating the ascending optical loss gain of an optical fiber repeater and the near end of the optical fiber repeater. The method provided by the invention comprises the following steps: combining optical signals transmitted through optical fibers at the multi-path far end by utilizing an optical combiner at the near end; detecting the optical power of the optical signals output by the optical combiner to obtain the optical power value actually accepted; calculating the optical loss value required to be compensated according to the optical power value actually accepted, the combination number of the optical combiner and the preset lossless value, and outputting the corresponding radio frequency gain compensation value; and compensating by a gain regulator at the near end according to the radio frequency gain compensation value. By utilizing the superposition and loss characteristics of the optical combiner on each path of far-end optical power, the embodiment of the invention directly realizes the automatic compensation at the near end, solves the noise problem and does not need to consider the complicated gain allocation at the near end and the far end.
Description
Technical field
The invention belongs to moving communicating field, relate in particular to the method and the optical fiber repeater near-end of the Gain Automatic compensation of the up light loss of a kind of optical fiber repeater.
Background technology
Optical fiber repeater is made up of near-end and one or more far-ends, and is middle continuous by optical fiber.Because optical fiber closes factors such as road, fiber lengths, optical fiber splice along separate routes and all can produce optical path loss, the rf gain of complete machine is therefore loss also, compensates thereby need carry out gain-adjusted.Do not relate to noise problem for descending gain-adjusted, no matter be manual or automatic, the way basically identical of industry, the gain of promptly regulating each far-end respectively gets final product.
And up gain-adjusted becomes complicated owing to the noise objective problem, and the normal at present method that adopts comprises following 3 kinds:
1, manually regulates the up gain of near-end and each far-end respectively.When adopting this mode, need the profuse engineering staff of experience, carry out The Calculation of Optical Path and nearly far-end gain allocation, especially the far-end number for a long time, the work on the spot amount is very big.
2, automatically regulate far-end up by the method for linkage from top to bottom according to descending gain compensation at each far-end.When adopting this mode, regulate and concentrate on rapid deterioration noise objective on the far-end, for improving the up design of having to adopt higher cost of the nearly far-end of noise objective.
3, near-end and each far-end carry out the automatic gain control of radio frequency link.Calculate based on the radio-frequency power collection, non-direct compensation light loss gain will be considered nearly far-end gain allocation and noise problem algorithm complexity, depends on communication interaction between nearly far-end, and reliability is low and software design is complicated.
Summary of the invention
In order to address the above problem, the purpose of the embodiment of the invention is to provide the method for the Gain Automatic compensation of the up light loss of a kind of optical fiber repeater.
The embodiment of the invention is achieved in that the method for the Gain Automatic compensation of the up light loss of a kind of optical fiber repeater, it is characterized in that, said method comprising the steps of:
The optical combiner of near-end closes the road to the multichannel far-end through the light signal of Optical Fiber Transmission;
Light signal to optical combiner output carries out the luminous power detection, obtains actual measurement and receives optical power value;
Close road number and default lossless value according to described actual measurement receipts optical power value, optical combiner, calculate the optical loss value that needs compensation, and export corresponding rf gain offset;
The fader of near-end compensates according to described rf gain offset.
Further, according to described actual measurement receive optical power value, optical combiner closes road number and default lossless value, calculates the optical loss value that needs compensation, and the step of exporting corresponding rf gain offset specifically comprises:
Utilize the optical loss value L that computing formula L=X-Y+10logN calculates needs compensation;
Utilize computing formula Z=2L to calculate rf gain offset Z, and output rf gain offset Z,
Described N is that optical combiner closes the road number, and X is default lossless value, and Y receives optical power value for actual measurement, described X 〉=Y, and N is the natural number greater than 1.
Further, described N is less than 9 natural number greater than 0.
Another purpose of the embodiment of the invention is to provide a kind of optical fiber repeater near-end, and described near-end comprises:
Optical combiner is used for the multichannel far-end is closed the road through the light signal of Optical Fiber Transmission;
The luminous power detection module, the light signal that optical combiner is exported carries out the luminous power detection, obtains actual measurement and receives optical power value;
Computing module links to each other with described luminous power detection module, is used for closing road number and default lossless value according to described actual measurement receipts optical power value, optical combiner, calculates the optical loss value that needs compensation, and exports corresponding rf gain offset;
Fader links to each other with described computing module, is used for compensating according to described rf gain offset.
Further, described computing module comprises:
Optical loss value computing module is used to utilize computing formula L=X-Y+10logN to calculate the optical loss value L of needs compensation;
Rf gain compensation value calculation module is used to utilize computing formula Z=2L to calculate rf gain offset Z, and output rf gain offset Z;
Described N is that optical combiner closes the road number, and X is default lossless value, and Y receives optical power value for actual measurement, described X 〉=Y, and N is the natural number greater than 1.
Further, described N is less than 9 natural number greater than 0.
In an embodiment of the present invention, utilized stack and the loss characteristic of optical combiner, directly on near-end, realized compensation automatically solving noise problem, need not consider complicated nearly far-end gain allocation every great distance end luminous power.And the automatic backoff algorithm of employing is simply effective, compensates desired parameters automatically and all obtains from near-end, regulates and also finishes at near-end, need not communication interaction between the nearly far-end, even communication failure also can compensate automatically between the nearly far-end.And software design and debugging are simple, the reliability height.
Description of drawings
Fig. 1 is the optical fiber repeater up link block diagram that the embodiment of the invention provides;
Fig. 2 is the structural representation of the computing module that provides of the embodiment of the invention;
Fig. 3 is the flow chart of the method for the Gain Automatic compensation of up light loss that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the optical fiber repeater up link that the embodiment of the invention provides, and for saying something easily, has saved other part that has nothing to do with the present invention.
The optical fiber repeater near-end with the far-end number determine by actual engineering, the embodiment of the invention be typical 1 the holder 4.The up input of 4 great distance ends is carried out radiofrequency signal to the light signal conversion after gain-adjusted, arrive near-end through Optical Fiber Transmission.The light signal of 10 pairs of multichannels of optical combiner (4 tunnel) far-end closes the road.Optical combiner 10 output light signals pass to luminous power detection module 12 by light to the radio frequency modular converter.Simultaneously, light is changed the light signal of optical combiner 10 outputs to the radio frequency modular converter, converts radiofrequency signal input gain adjuster 16 to.Another side, the light signal of 12 pairs of optical combiner outputs of luminous power detection module carries out luminous power and detects, and obtains actual measurement and receives optical power value.Computing module 14 links to each other with described luminous power detection module 12, and computing module 14 closes road number and default lossless value according to described actual measurement receipts optical power value, optical combiner, calculates the optical loss value that needs compensation, and exports corresponding rf gain offset.Fader 16 links to each other with described computing module 14, and fader 16 compensates according to described rf gain offset, the radiofrequency signal after the output compensation.
Consult Fig. 2, the structure of the computing module that provides in the embodiment of the invention is provided, this computing module comprises: optical loss value computing module 141, rf gain compensation value calculation module 142.
Optical loss value computing module 141 utilizes the optical loss value L that computing formula L=X-Y+10logN calculates needs compensation, and rf gain compensation value calculation module 142 utilizes computing formula Z=2L to calculate rf gain offset Z, and output rf gain offset Z.
This N is that optical combiner closes the road number, and X is default lossless value (being exactly the receipts optical power value under perfect condition in fact), and Y receives optical power value for actual measurement, described X 〉=Y, and N is the natural number greater than 1.Wherein, N=1,2,3 ..., be 8 at present to the maximum in the actual design, that is to say present N for greater than 0 less than 9 natural number.
In order to be illustrated more clearly in problem, now illustrate as follows: closing the road number for 1 holder, 4 optical combiners is N=4, X=2dBm, and Y=-1dBm, like this, optical loss value L=2-1+10log4 ≈ 7dB, rf gain offset Z=14dB.
Consult Fig. 3, the flow process of the method for the Gain Automatic compensation of up light loss that the embodiment of the invention provides, details are as follows:
In step S101, the optical combiner of near-end closes the road to the multichannel far-end through the light signal of Optical Fiber Transmission.
In step S102, the light signal that optical combiner is exported carries out the luminous power detection, obtains actual measurement and receives optical power value.
In step S103, close road number and default lossless value according to described actual measurement receipts optical power value, optical combiner, calculate the optical loss value that needs compensation, and export corresponding rf gain offset.
This step comprises step again: utilize computing formula L=X-Y+10logN to calculate the optical loss value L of needs compensation; And utilize computing formula Z=2L to calculate rf gain offset Z, and output rf gain offset Z.
This N is that optical combiner closes the road number, and X is default lossless value (being exactly the receipts optical power value under perfect condition in fact), and Y receives optical power value for actual measurement, described X 〉=Y, and N is the natural number greater than 1.Wherein, N=1,2,3 ..., be 8 at present to the maximum in the actual design, that is to say present N for greater than 0 less than 9 natural number.
In step S104, the fader of near-end compensates according to described rf gain offset.
In sum, light loss of the present invention compensation is automatically finished at near-end, has utilized stack and the loss characteristic of optical combiner to every great distance end luminous power, therefore, offset is a compromise value concerning all far-ends, rather than each far-end is carried out fine compensation respectively.The automatic compensation of finishing by this algorithm can be satisfied big portion project situation and need not do very accurate compensation in actual applications, the engineering staff open safeguard very convenient.The gain-adjusted function of far-end routine still keeps in addition, does manual accurate fine setting compensation (finely tuning little to noise effect) when the specific (special) requirements to satisfy the user.
And, directly on near-end, realize compensation automatically, solve noise problem, need not consider complicated nearly far-end gain allocation.Specific automatic backoff algorithm is simply effective, can draw the offset of compromising preferably at different far-end situations and number, make open easy to maintenance, automatically the compensation desired parameters all obtains from near-end, regulate and also finish at near-end, communication failure need not communication interaction between the nearly far-end, even also can compensate automatically between the nearly far-end.And software design and debugging are simple, the reliability height.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the method for the Gain Automatic compensation of the up light loss of optical fiber repeater is characterized in that, said method comprising the steps of:
The optical combiner of near-end closes the road to the multichannel far-end through the light signal of Optical Fiber Transmission;
Light signal to optical combiner output carries out the luminous power detection, obtains actual measurement and receives optical power value;
Close road number and default lossless value according to described actual measurement receipts optical power value, optical combiner, calculate the optical loss value that needs compensation, and export corresponding rf gain offset;
The fader of near-end compensates according to described rf gain offset.
2. method according to claim 1, it is characterized in that, according to described actual measurement receive optical power value, optical combiner closes road number and default lossless value, calculates the optical loss value that needs compensation, and the step of exporting corresponding rf gain offset specifically comprises:
Utilize the optical loss value L that computing formula L=X-Y+10logN calculates needs compensation;
Utilize computing formula Z=2L to calculate rf gain offset Z, and output rf gain offset Z,
Described N is that optical combiner closes the road number, and X is default lossless value, and Y receives optical power value for actual measurement, described X 〉=Y, and N is the natural number greater than 1.
3. method according to claim 2 is characterized in that, described N is less than 9 natural number greater than 0.
4. an optical fiber repeater near-end is characterized in that, described near-end comprises:
Optical combiner is used for the multichannel far-end is closed the road through the light signal of Optical Fiber Transmission;
The luminous power detection module, the light signal that optical combiner is exported carries out the luminous power detection, obtains actual measurement and receives optical power value;
Computing module links to each other with described luminous power detection module, is used for closing road number and default lossless value according to described actual measurement receipts optical power value, optical combiner, calculates the optical loss value that needs compensation, and exports corresponding rf gain offset;
Fader links to each other with described computing module, is used for compensating according to described rf gain offset.
5. optical fiber repeater near-end according to claim 4 is characterized in that, described computing module comprises:
Optical loss value computing module is used to utilize computing formula L=X-Y+10logN to calculate the optical loss value L of needs compensation;
Rf gain compensation value calculation module is used to utilize computing formula Z=2L to calculate rf gain offset Z, and output rf gain offset Z;
Described N is that optical combiner closes the road number, and X is default lossless value, and Y receives optical power value for actual measurement, described X 〉=Y, and N is the natural number greater than 1.
6. optical fiber repeater near-end according to claim 5 is characterized in that, described N is less than 9 natural number greater than 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618678.8A CN102045114B (en) | 2010-12-31 | 2010-12-31 | Method for automatically compensating ascending optical loss gain and near end of optical fiber repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618678.8A CN102045114B (en) | 2010-12-31 | 2010-12-31 | Method for automatically compensating ascending optical loss gain and near end of optical fiber repeater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102045114A true CN102045114A (en) | 2011-05-04 |
| CN102045114B CN102045114B (en) | 2014-07-23 |
Family
ID=43910953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010618678.8A Active CN102045114B (en) | 2010-12-31 | 2010-12-31 | Method for automatically compensating ascending optical loss gain and near end of optical fiber repeater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102045114B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299738A (en) * | 2011-07-01 | 2011-12-28 | 华为技术有限公司 | Method for acquiring optical network link performance parameters and device thereof |
| CN105450307A (en) * | 2015-12-11 | 2016-03-30 | 宁波环球广电科技有限公司 | Radio frequency amplification circuit and optical receiver for optical fiber radio frequency communication network |
| CN106936502A (en) * | 2016-12-27 | 2017-07-07 | 南京泰通科技股份有限公司 | GSM R repeaters Ethernet single fiber optical transmitter and receiver with light loss automatic gain compensation |
| WO2020191725A1 (en) * | 2019-03-28 | 2020-10-01 | 华普特科技（深圳）股份有限公司 | Wireless communication method and system, and main unit and remote unit |
| CN113219828A (en) * | 2021-04-22 | 2021-08-06 | 中国电子科技集团公司第二十九研究所 | Control method for gain consistency of multi-channel analog optical module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257350A (en) * | 2008-04-03 | 2008-09-03 | 京信通信系统（中国）有限公司 | Optical fiber straight amplification station based on opened loop and closed loop auto-gain control chain circuit |
| CN101465698A (en) * | 2008-12-30 | 2009-06-24 | 福建先创电子有限公司 | Power compensation method of optical fiber direct amplification machine |
| CN101599790A (en) * | 2009-01-08 | 2009-12-09 | 武汉盛华微系统技术股份有限公司 | A kind of intelligent micropower optical fiber wireless covering system |
-
2010
- 2010-12-31 CN CN201010618678.8A patent/CN102045114B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257350A (en) * | 2008-04-03 | 2008-09-03 | 京信通信系统（中国）有限公司 | Optical fiber straight amplification station based on opened loop and closed loop auto-gain control chain circuit |
| CN101465698A (en) * | 2008-12-30 | 2009-06-24 | 福建先创电子有限公司 | Power compensation method of optical fiber direct amplification machine |
| CN101599790A (en) * | 2009-01-08 | 2009-12-09 | 武汉盛华微系统技术股份有限公司 | A kind of intelligent micropower optical fiber wireless covering system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299738A (en) * | 2011-07-01 | 2011-12-28 | 华为技术有限公司 | Method for acquiring optical network link performance parameters and device thereof |
| WO2012167754A1 (en) * | 2011-07-01 | 2012-12-13 | 华为技术有限公司 | Method and device for obtaining performance parameters of optical network link |
| CN102299738B (en) * | 2011-07-01 | 2015-05-13 | 华为技术有限公司 | Method for acquiring optical network link performance parameters and device thereof |
| CN105450307A (en) * | 2015-12-11 | 2016-03-30 | 宁波环球广电科技有限公司 | Radio frequency amplification circuit and optical receiver for optical fiber radio frequency communication network |
| CN106936502A (en) * | 2016-12-27 | 2017-07-07 | 南京泰通科技股份有限公司 | GSM R repeaters Ethernet single fiber optical transmitter and receiver with light loss automatic gain compensation |
| CN106936502B (en) * | 2016-12-27 | 2024-02-13 | 南京泰通科技股份有限公司 | GSM-R repeater Ethernet single-fiber optical transceiver with optical loss automatic gain compensation |
| WO2020191725A1 (en) * | 2019-03-28 | 2020-10-01 | 华普特科技（深圳）股份有限公司 | Wireless communication method and system, and main unit and remote unit |
| CN113544982A (en) * | 2019-03-28 | 2021-10-22 | 华普特科技（深圳）股份有限公司 | Wireless communication method, system, near-end machine and far-end machine |
| CN113219828A (en) * | 2021-04-22 | 2021-08-06 | 中国电子科技集团公司第二十九研究所 | Control method for gain consistency of multi-channel analog optical module |
| CN113219828B (en) * | 2021-04-22 | 2022-07-05 | 中国电子科技集团公司第二十九研究所 | Control method for gain consistency of multi-channel analog optical module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102045114B (en) | 2014-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Winzer | Energy-efficient optical transport capacity scaling through spatial multiplexing | |
| CN102045114A (en) | Method for automatically compensating ascending optical loss gain and near end of optical fiber repeater | |
| Pesic et al. | Faster return of investment in WDM networks when elastic transponders dynamically fit ageing of link margins | |
| CN101404509B (en) | Signal interference canceller and signal interference canceling method | |
| CN108494497B (en) | Adaptive time domain equalization system and in-band full duplex wireless communication system | |
| CN102098688A (en) | Method, system and device for realizing MIMO (multiple input multiple output) of indoor distribution system | |
| CN102754367A (en) | Multichannel nonlinearity compensation in an optical communications link | |
| CN104243048B (en) | Transmission performance optimization method and system based on simplex in coherent optical communication system | |
| CN102238438A (en) | Long-distance box and method for processing uplink and downlink light thereof | |
| CN104640011A (en) | Dual-frequency power amplification device applied to AP (access point) and AP equipment | |
| CN103002358B (en) | optical network unit of passive optical network and control method thereof | |
| CN101621323A (en) | Method for optimizing flatness index of repeater | |
| CN101389145B (en) | System for implementing indoor covering in WCDMA network | |
| CN100474981C (en) | Method and device for raising output power of base station system | |
| CN105790847A (en) | Power adjustment method and device | |
| CN202617121U (en) | Broadband intelligent micro-power light transmission module | |
| CN105530039A (en) | Combiner, combing device and signal combing system | |
| CN202737876U (en) | Simulation fiber repeater achieving multipath distribution | |
| CN201188673Y (en) | Digital radio frequency zooming system base on system backup | |
| CN201426185Y (en) | Single-fiber transmission 1-to-N fiber-optic repeater system | |
| EP2053771B1 (en) | Method for optimizing optical amplification in an optical network | |
| CN102752056B (en) | Time-division multiplexing electric-branching radio-frequency optical transmission module | |
| CN204597214U (en) | A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement | |
| CN101141222B (en) | Device and method for implementing photosignal waveform generation | |
| CN101588207B (en) | High-speed light receiving subsystem and optimized coordination method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |