CN113691316A - Method for processing OTN optical amplifier and dispersion compensation - Google Patents
Method for processing OTN optical amplifier and dispersion compensation Download PDFInfo
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- CN113691316A CN113691316A CN202111039733.2A CN202111039733A CN113691316A CN 113691316 A CN113691316 A CN 113691316A CN 202111039733 A CN202111039733 A CN 202111039733A CN 113691316 A CN113691316 A CN 113691316A
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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
- H04B10/2525—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using dispersion-compensating fibres
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
Abstract
The invention provides a method for processing OTN optical amplifier and dispersion compensation, which comprises the following steps: step S1, attenuation and distortion of the optical path of the optical link relay section are measured and calculated; s2, selecting a corresponding optical amplifier dispersion compensation integrator, and inserting the board card device into a card slot of the OTN optical layer sub-rack equipment; step S3, connecting the external tail fiber interface of the dispersion compensation area of the optical amplifier dispersion compensation integrator to the tail fiber interface of the wave combining and splitting board of the electrical layer sub-rack through the tail fiber; step S4, remotely controlling the electric control lever button of the light amplification dispersion compensation integrator to select the light amplification parameter interface of the light amplification area and the dispersion compensation parameter interface of the dispersion compensation area on the network management; step S5, opening a light path channel to debug the channel wave channel; the invention provides an intelligent, flexible and practical OTN processing dispersion compensation and power amplification method and an overall structure, and interface reservation is carried out on the long-range signal compensation requirement under the condition of meeting the use at the present stage.
Description
Technical Field
The invention relates to the technical field of optical communication transmission, in particular to a method for processing OTN optical amplifier and dispersion compensation.
Background
The prior art has the following defects:
1. in the construction of OTN optical transmission networks, the 1550nm wavelength window of g.652 optical fiber is mostly used, and due to the combined/divided wave, the wavelength conversion, and the distortion and attenuation of the optical fiber signal, the dispersion and attenuation of the optical signal will occur, and the existing equipment manufacturers solve the problem by using 2 devices of optical amplifier and dispersion compensator at the same time, so as to solve the problem of dispersion and optical attenuation respectively. However, due to the powerful add/drop multiplexing and cross-connect functions of the OTN, a plurality of branches (optical directions) of a single ADM station often exist in a real networking, attenuation and dispersion of each branch are different, so that a single set of equipment needs to be provided with a plurality of different power amplifiers and dispersion compensators, thereby occupying valuable cabinet space, and even when the equipment slot or cabinet space is full, an additional cabinet is specially provided with an external optical amplifier and a dispersion compensator.
Meanwhile, the optical amplifier and the dispersion compensator are both active devices, and each device needs to occupy only the overhead power supply (PDU) for external use, which often causes the situation of insufficient overhead power supply.
2. When the circuit changes to affect the optical path, the maintenance personnel need to replace the appropriate optical amplifier or dispersion compensation plate on site.
3. The existing operation and maintenance personnel need to simultaneously reserve a plurality of optical amplification plates and dispersion compensation plates with different parameters for a plurality of optical paths, and when the line length changes or the optical cable attenuation increases and other reasons occur, corresponding plates need to be replaced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for reducing the number of times that an operation and maintenance worker changes a board on site due to optical path adjustment, and meanwhile, avoiding a large number of standby optical amplifiers and dispersion compensation board devices in reality, thereby greatly improving the utilization rate of the board devices.
The invention is realized by adopting the following method: a method of processing OTN optical amplification and dispersion compensation, the method comprising the steps of:
step S1, attenuation and distortion of the optical path of the optical link relay section to be established at this time are measured and calculated;
s2, selecting a corresponding optical amplifier dispersion compensation integrator, and inserting the board card of the optical amplifier dispersion compensation integrator into a card slot of the OTN optical layer subframe equipment;
step S3, connecting the external tail fiber interface of the dispersion compensation area of the optical amplifier dispersion compensation integrator to the splitter plate tail fiber interface and the combiner plate tail fiber interface of the electrical layer sub-rack through the tail fiber;
step S4, remotely controlling the electric control lever button of the light amplification dispersion compensation integrator to select the light amplification parameter interface of the light amplification area and the dispersion compensation parameter interface of the dispersion compensation area on the network management;
and step S5, opening the optical path channel to debug the channel.
Further, in the step S1, the conventional optical path attenuation measurement and calculation generally adopts a light source optical power meter instrument and meter to perform measurement and calculation, and also can adopt an OSNR 58 formula to perform calculation, where the formula is: OSNR is Pout-G-NF-10LogN + 58- (1),
wherein:
OSNR-Total channel optical Signal-to-noise ratio, dBm;
pout — average output power, dBm;
g-amplifier gain, dB;
NF-EDFA noise figure, dB;
pn-optical signal power of nth channel, mw;
nn-noise power within the equivalent noise bandwidth, mw;
bm-equivalent noise bandwidth, nm;
br-reference bandwidth, nm.
Further, the dispersion calculation formula is as follows:
s ═ L-Lx — (4), wherein:
s-need to compensate the dispersion coefficient, ps/nm.km;
lx-attenuation limited regeneration segment length, km;
Dmax-maximum total dispersion value allowed for the device between S (MPI-S), R (MPI-R), ps/nm;
d is the fiber dispersion coefficient, ps/nm.km.
Further, the optical amplifier dispersion compensation integrator comprises a main control board, wherein the main control board comprises 2 areas, and the main control board is divided into an optical power amplification area on the left side and a dispersion compensation area on the right side through a channel; the left end of the main control board is sequentially provided with a capacitor, a resistor and a cooling fan from top to bottom, the left end and the right end of the main control board are both provided with built-in tail fibers, and the built-in tail fibers at the left end are arranged on the right side of the cooling fan; the main control board is provided with a main control module, a CPU is arranged in the main control module, and the main control module is arranged on the right side of the capacitor and the resistor; the main control board is provided with an optical amplification processing module and a dispersion compensation processing module, the optical amplification processing module and the dispersion compensation processing module are arranged in a left-right partition mode, and the optical amplification processing module and the dispersion compensation processing module are connected through a built-in optical fiber channel; the main control panel is provided with a first electric control rod button and a second electric control rod button which are connected with the optical amplification processing module, and the main control panel is provided with a third electric control rod button and a fourth electric control rod button which are connected with the dispersion compensation processing module.
Furthermore, equipment buckles are arranged at the left end and the right end of the lower surface of the main control board and used for fixing the board card inserted into the equipment slot; the main control board lower surface is provided with external tail optical fiber interface at both ends about, just external tail optical fiber interface set up in the equipment buckle is inboard.
Further, a first internal pigtail IN1 interface, a first internal pigtail IN2 interface, a first internal pigtail OUT1 interface and a first internal pigtail OUT2 interface are sequentially arranged on the left side surface of the optical amplification processing module from top to bottom, the first internal pigtail IN rear connector at the left end selects the first internal pigtail IN1 interface or the first internal pigtail IN2 interface through the operation and control of the first electric control lever button to be connected, and the first internal pigtail OUT rear connector at the left end selects the first internal pigtail OUT1 interface or the first internal pigtail OUT2 interface through the operation and control of the second electric control lever button to be connected; the right side surface of the dispersion compensation processing module is sequentially provided with a second built-IN pigtail IN1 interface, a second built-IN pigtail IN2 interface, a second built-IN pigtail OUT1 interface and a second built-IN pigtail OUT2 interface from top to bottom, a second built-IN pigtail IN rear joint at the right end is connected with the second built-IN pigtail IN1 interface or the second built-IN pigtail IN2 interface through the control selection of the third electric control rod knob, and the second built-IN pigtail OUT rear joint is connected with the second built-IN pigtail OUT1 interface or the second built-IN pigtail OUT2 interface through the control selection of the fourth electric control rod knob.
Furthermore, the built-in tail fiber is fixed on the main control board through a plurality of tail fiber hoops, and a tail fiber mark is arranged on the built-in tail fiber.
The optical amplifier dispersion compensation integrated device plate for the OTN equipment is inserted into the clamping grooves of the first OTN optical layer sub-frame and the second OTN optical layer sub-frame, the first ODF optical fiber distribution unit is connected with the optical amplifier dispersion compensation integrated device plate for the OTN equipment through a tail fiber, and a device board of the first OTN optical layer sub-frame is connected with the first wave splitting plate and the first wave combining plate of the first OTN optical layer sub-frame through the tail fiber; the second wave splitting plate and the second wave combining plate of the second OTN optical layer sub-frame are connected with the optical amplifier dispersion compensation integrated device plate for the OTN equipment of the second OTN optical layer sub-frame through tail fibers, the optical amplifier dispersion compensation integrated device plate for the OTN equipment of the second OTN optical layer sub-frame is connected with the second ODF optical fiber distribution unit through the tail fibers, and the second ODF optical fiber distribution unit is connected with a first transformer substation through an optical cable. The optical amplifier dispersion compensation integrator plate 28 for the OTN equipment is inserted into the clamping grooves of the first OTN optical layer sub-frame and the second OTN optical layer sub-frame, the external tail fiber interface of the optical amplifier dispersion compensation integrator plate for the OTN equipment is connected to the wave splitting plate and wave combining plate tail fiber interfaces of the OTN electrical layer sub-frame through the external tail fiber, and the optical amplification parameter interface selection of an optical amplification area and the dispersion compensation parameter interface selection of a dispersion compensation area are controlled by the network management control electric control rod button, so that the transmission link opening of an optical link relay section is completed.
Furthermore, a first electric control rod button and a second electric control rod button are arranged in the left side optical power amplification area; a third electric control rod button and a fourth electric control rod button are arranged in the right dispersion compensation area; the first electric control lever button, the second electric control lever button, the third electric control lever button and the fourth electric control lever button are consistent in structure, the first electric control lever button comprises a base, the base is connected to a main control board, an electric control remote lever arm is arranged on the base, clamping clamps are arranged at the left end and the right end of the upper surface of the electric control remote lever arm, and a rear connector with a built-in tail fiber is arranged on the electric control remote lever arm; and remotely operating the electric control remote lever arm through a network manager to connect the first built-IN pigtail IN rear connector into the optical amplification processing module.
The invention has the beneficial effects that: the invention aims to provide an intelligent, flexible and practical method and an overall structure for OTN processing dispersion compensation and power amplification, and reasonably integrates the structure of an overall board card device, thereby intelligentizing the board card device, reducing the method that operation and maintenance personnel repeatedly go to the site for replacing the board card due to optical path adjustment, and simultaneously avoiding the method of using a large amount of standby optical amplifiers and dispersion compensation board card devices in reality, greatly improving the utilization rate of the board card device, reducing investment and improving economic benefit, and providing an intelligent, convenient, reliable and economic network architecture for increasingly-large communication core layer OTN transmission networks.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
Fig. 2 is a schematic structural diagram of an optical amplifier dispersion compensator.
Fig. 3 is a schematic diagram of the usage state of the optical amplifier dispersion compensator.
Fig. 4 is a schematic structural view of the first electric control lever button.
Fig. 5 is a schematic view of the first electric control lever knob in use.
[ label description ]: 1-a main control board; 2-capacitance; 3-resistance; 4-a heat dissipation fan; 5-tail fibers are arranged in the light amplification area; 51-pigtail clamp; 52-pigtail identification; 6-a main control module; 61-CPU; 7-a light amplification processing module; 71-first built-IN pigtail IN1 interface; 72-first built-IN pigtail IN2 interface; 73-first built-in pigtail OUT1 interface; 74-first built-in pigtail OUT2 interface; 8-a dispersion compensation processing module; 81-second built-IN pigtail IN1 interface; 82-second built-IN pigtail IN2 interface; 83-second built-in pigtail OUT1 interface; 84-second built-in pigtail OUT2 interface; 9-built-in optical fiber channel; 101-a first electrical control lever button; 102-a second electric control lever button; 111-first built-IN pigtail IN rear connector; 112-first internal pigtail OUT rear connector; 201-a third electric control lever button; 202-fourth electric control lever button; 211-second built-IN pigtail IN rear connector; 212-second internal pigtail OUT rear connector; 12-equipment buckle; 13-external tail fiber interface; 14-a first ODF fiber distribution unit; 15-first OTN optical layer subrack; 16-a first OTN electrical submount; 161-a first wavesplitting plate; 162-a first wave combining plate; 17-a second OTN optical layer subrack; 18-a second ODF fiber distribution unit; 19-a first substation; 20-a second substation; 21-a base; 22-an electrically controlled rocker arm; 23-a snap clip; 24-a second OTN electrical submount; 241-a second wave-splitting plate; 242-a second wave combining plate; 25-an optical cable; 26-pigtail; 27-OTU; 28-optical amplifier dispersion compensation integrator body.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, a method for processing OTN optical amplifier and dispersion compensation includes the following steps:
step S1, attenuation and distortion of the optical path of the optical link relay section to be established at this time are measured and calculated;
s2, selecting a corresponding optical amplifier dispersion compensation integrator, and inserting the board card of the optical amplifier dispersion compensation integrator into a card slot of the OTN optical layer subframe equipment;
step S3, connecting the external tail fiber interface of the dispersion compensation area of the optical amplifier dispersion compensation integrator to the splitter plate tail fiber interface and the combiner plate tail fiber interface of the electrical layer sub-rack through the tail fiber;
step S4, remotely controlling the electric control lever button of the light amplification dispersion compensation integrator to select the light amplification parameter interface of the light amplification area and the dispersion compensation parameter interface of the dispersion compensation area on the network management;
and step S5, opening the optical path channel to debug the channel.
The invention is further illustrated by the following specific examples:
a method for processing OTN optical amplifier and dispersion compensation, when newly building optical path, selecting OTN optical amplifier dispersion compensation integrator, connecting optical cable fiber core to optical amplifier zone external tail fiber interface of device, connecting tail fiber post-joint IN optical amplifier zone to corresponding optical amplification parameter built-IN tail fiber OUT/IN interface of the optical path, connecting tail fiber post-joint IN dispersion compensation zone to built-IN tail fiber OUT/IN interface of the optical path IN compensation parameter range, thereby completing debugging of optical path. When the optical path is changed and adjusted, if the optical signal is distorted and attenuated, the electric control lever button is operated through the network management, and the internal tail fiber rear connector is selectively connected to the appropriate dispersion compensation interface and the optical amplifier interface, so that the whole optical path is adjusted and communicated.
1. Aiming at the optical path distortion and attenuation of the OTN, the matching use of the optical amplification plate and the dispersion compensation plate is rationalized, and the whole structure and the composition are flexible and ordered.
2. The method is characterized in that a unique adaptive function and a unique technological structure are set, the built-in pigtail rear connector in the optical amplifier area is flexibly adjusted to the built-in interface within the required optical amplifier parameter range through the OTN network management, and the built-in pigtail rear connector in the dispersion compensation area is adjusted to the required dispersion compensation built-in pigtail interface through the network management, so that the problem that the optical amplifier and the dispersion can be flexibly adapted when the length of the OTN optical path is increased or reduced along with the transformation of the line is solved.
Different from the existing single light-emitting panel and the existing diffuser on the market, when the line changes, the operation and maintenance personnel need to replace the appropriate panel on site.
3. The optical amplification board and the dispersion compensation device adopt an integrated design, which is different from the prior 2 devices on the market, and the invention is convenient to save the space of the equipment card slot and the use of an external power supply according to the flexible allocation characteristic of the optical amplification board and the dispersion compensation device 2.
4. The board card is designed into the optical amplifier with a plurality of adjustable range parameters, and the optical dispersion compensator with a plurality of adjustable ranges is integrated, so that the board has the characteristic of multiple purposes, and the board does not need to be frequently replaced due to the change of the line length or the increase of the attenuation of the optical cable and the like. The situation that the existing operation and maintenance personnel need to simultaneously reserve a plurality of optical amplification plates and dispersion compensation plates with different parameters for a plurality of optical paths is solved.
5. The electric control lever button is arranged, and the flexible selection of the optical amplification parameter interface of the optical amplification area and the flexible selection of the dispersion compensation parameter interface of the dispersion compensation area can be flexibly realized through network control through the adjustment of automatic operation.
In the step S1, the conventional optical path attenuation measurement and calculation generally adopts a light source optical power meter instrument and meter to perform measurement and calculation, and also can adopt an optical signal to noise ratio OSNR 58 formula to perform calculation, where the formula is: OSNR is Pout-G-NF-10LogN + 58- (1),
wherein:
OSNR-Total channel optical Signal-to-noise ratio, dBm;
pout — average output power, dBm;
g-amplifier gain, dB;
NF-EDFA noise figure, dB;
pn-optical signal power of nth channel, mw;
nn-noise power within the equivalent noise bandwidth, mw;
bm-equivalent noise bandwidth, nm;
br-reference bandwidth, nm.
The dispersion calculation formula is as follows:
s ═ L-Lx — (4), wherein:
s-need to compensate the dispersion coefficient, ps/nm.km;
lx-attenuation limited regeneration segment length, km;
Dmax-maximum total dispersion value allowed for the device between S (MPI-S), R (MPI-R), ps/nm;
d is the fiber dispersion coefficient, ps/nm.km.
Solving:
a. in the formula (2), Pn, Nn, Bm and Br are known measurable parameter values, and the range value of OSNR can be calculated;
b. substituting the formula (2) into the formula (1), wherein Pout and NF in the formula (1) are known parameter values, so as to calculate the parameter value of G, and deducting the threshold value of the optical module, i.e. the parameter range value of the optical power to be compensated.
c. (3) formula DmaxAnd D are known parameter values, the numerical value of Lx can be calculated, and the parameter value of the dispersion coefficient needing to be compensated for S can be obtained by substituting the formula (4).
With continued reference to fig. 2, the present invention provides an embodiment: the optical amplifier dispersion compensation integrator comprises a main control board 1, wherein the main control board 1 comprises two areas, and the main control board 1 is divided into an optical power amplification area on the left side and a dispersion compensation area on the right side through a channel; the left end has set gradually electric capacity 2, resistance 3 and radiator fan 4 from last to down on the main control board 1, both ends all are provided with built-in tail optical fiber 5 about on the main control board 1, and light put the built-in tail optical fiber 5 in district set up in radiator fan 4 right side, be provided with host system 6 on the main control board 1, be provided with CPU61 in the host system 6, just host system 6 set up in electric capacity 2 and resistance 3 right side. The main control board 1 is provided with an optical amplification processing module 7 and a dispersion compensation processing module 8, the optical amplification processing module 7 and the dispersion compensation processing module 8 are arranged on the left and right sides, the optical amplification processing module 7 and the dispersion compensation processing module 8 are connected through a built-in optical fiber channel 9, and a connecting fiber of the optical amplification processing module and the dispersion compensation processing module 8 is arranged in the built-in optical fiber channel 9. The main control panel 1 is provided with a first electric control lever button 101 and a second electric control lever button 102 which are connected with the optical amplification processing module 7, and the main control panel 1 is provided with a third electric control lever button 201 and a fourth electric control lever button 202 which are connected with the dispersion compensation processing module 8. The built-in pigtail rear connector is flexibly adjusted and inserted into a built-in interface in a required optical amplifier parameter range by operating the first electric control lever knob of the optical amplifier area through the OTN network management, and the built-in pigtail rear connector is adjusted and inserted into the required dispersion compensation built-in pigtail interface by operating the second electric control lever knob of the dispersion compensation area through the network management, so that the problem that the optical amplifier and the dispersion can be flexibly adapted when the length of an OTN optical path is increased or reduced along with the transformation of a line is solved; through the automatic operation adjustment of the first electric control lever button 101, the second electric control lever button 102, the third electric control lever button 201 and the fourth electric control lever button 202, the flexible selection of the optical amplification parameter interface of the optical amplification area and the flexible selection of the dispersion compensation parameter interface of the dispersion compensation area can be realized through network control.
As shown in fig. 2, in an embodiment of the present invention, the left and right ends of the lower surface of the main control board 1 are both provided with the device fasteners 12, the left and right ends of the lower surface of the main control board 1 are provided with the external pigtail connectors 13, and the external pigtail connectors 13 are disposed inside the device fasteners 12. The main control board 1 can be connected with the wave-splitting board tail fiber interface of the OTN electrical sub-frame through the external tail fiber interface 13, and the integrated board card can be integrally and better inserted and fixed in the card slot of the OTN optical sub-frame through the equipment buckle 12.
Referring to fig. 2, IN an embodiment of the invention, the left side surface of the optical amplification processing module 7 is sequentially provided with a first internal pigtail IN1 interface 71, a first internal pigtail IN2 interface 72, a first internal pigtail OUT1 interface 73, and a first internal pigtail OUT2 interface 74 from top to bottom. The first built-IN pigtail IN rear connector 111 of the left-side playing area is operated by the first electric control lever knob 101 to select the first built-IN pigtail IN1 interface 71 or the first built-IN pigtail IN2 interface 72 for connection, and the first built-IN pigtail OUT rear connector 112 is operated by the second electric control lever knob 102 to select connection with the first built-IN pigtail OUT1 interface 73 or the first built-IN pigtail OUT2 interface 74; the right side surface of the dispersion compensation processing module is sequentially provided with a second built-IN pigtail IN1 interface 81, a second built-IN pigtail IN2 interface 82, a second built-IN pigtail OUT1 interface 83 and a second built-IN pigtail OUT2 interface 84 from top to bottom, a second built-IN pigtail IN rear joint 211 IN a right dispersion compensation area is connected with the second built-IN pigtail IN1 interface 81 or the second built-IN pigtail IN2 interface 82 through the operation and control selection of the third electric control lever knob 201, and a second built-IN pigtail OUT rear joint 212 is connected with the second built-IN pigtail OUT1 interface 83 or the second built-IN pigtail OUT2 interface 83 through the operation and control selection of the fourth electric control lever knob 202.
Referring to fig. 2, in an embodiment of the present invention, the internal pigtail 5 is fixed on the main control board 1 by a plurality of pigtail clips 51, and the internal pigtail 5 is provided with a pigtail identifier 52. So that the built-in pigtail 5 can be fixed on the main control board 1 by the action of the pigtail clamp 51.
Referring to fig. 3, in an embodiment of the present invention, the optical fiber module further includes a first ODF optical fiber distribution unit 14, a first OTN optical layer sub-frame 15, an OTN electrical layer sub-frame 16, a second OTN optical layer sub-frame 17, and a second ODF optical fiber distribution unit 18, where the first ODF optical fiber distribution unit 14 is connected to a second substation 20 through an optical cable 25, the optical dispersion compensation integrator plate 28 for OTN equipment is inserted into card slots of the first OTN optical layer sub-frame 15 and the second OTN optical layer sub-frame 17, the first ODF optical fiber distribution unit 14 is connected to the optical dispersion compensation integrator plate 28 for OTN equipment of the first OTN optical layer sub-frame 15 through a tail fiber 26, and a device board card of the first OTN optical layer sub-frame 15 is connected to a first splitter plate 161 and a first combiner plate 162 of the first OTN electrical layer sub-frame 16 through a tail fiber; the second splitter plate 241 and the second combiner plate 242 of the second OTN optical layer sub-frame 24 are connected to the optical dispersion compensation integrator plate 28 for OTN devices of the second OTN optical layer sub-frame 17 through the tail fiber 26, the optical dispersion compensation integrator plate 28 for OTN devices of the second OTN optical layer sub-frame 17 is connected to the second ODF optical fiber distribution unit 18 through the tail fiber 26, and the second ODF optical fiber distribution unit 18 is connected to the first substation 19 through the optical cable 25. The optical amplifier dispersion compensation integrator plate 28 for the OTN equipment is inserted into the card slots of the first OTN optical layer sub-frame 15 and the second OTN optical layer sub-frame 17, the external tail fiber interface of the optical amplifier dispersion compensation integrator plate 28 for the OTN equipment is connected to the wave splitting plate and wave combining plate tail fiber interface of the OTN electrical layer sub-frame through the external tail fiber 26, and the optical amplification parameter interface selection of the optical amplification area and the dispersion compensation parameter interface selection of the dispersion compensation area are controlled by the electric control rod button through the network management, so that the transmission link opening of an optical link relay section is completed.
Referring to fig. 4 and 5, in an embodiment of the present invention, the first electrical control knob 101 and the second electrical control knob 102 in the left light amplification area and the third electrical control knob 201 and the fourth electrical control knob 202 in the right dispersion compensation area have the same structure. First automatically controlled pole button 101 includes base 21, base 21 is connected to main control panel 1, be provided with automatically controlled remote lever arm 22 on the base 21, both ends all are provided with buckle clamp 23 about automatically controlled remote lever arm 22 upper surface, be provided with the rearmounted joint 111 of first built-IN tail optical fiber IN on the automatically controlled remote lever arm 22. The base 21 is fixed on the main control board 1, and then the electric control remote lever arm 22 is remotely operated through the network management, so that the first built-IN pigtail IN rear connector 111 is connected to the optical amplification processing module 7. The embodiments of the second, third and fourth electrical control levers 102, 201, 202 are identical to the embodiment of the first electrical control lever 101.
The ODF optical fiber distribution unit, the OTN optical layer sub-frame, the OTN electrical layer sub-frame, the optical amplification processing module, the dispersion compensation processing module, the main control board, the CPU, the capacitor, the resistor, and the heat dissipation fan in the present invention are all the prior art, and it is clear to those skilled in the art that the detailed description is omitted here.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (9)
1. A method of processing OTN optical amplification and dispersion compensation, the method comprising the steps of:
step S1, attenuation and distortion of the optical path of the optical link relay section to be established at this time are measured and calculated;
s2, selecting a corresponding optical amplifier dispersion compensation integrator, and inserting the board card of the optical amplifier dispersion compensation integrator into a card slot of the OTN optical layer subframe equipment;
step S3, connecting the external tail fiber interface of the dispersion compensation area of the optical amplifier dispersion compensation integrator to the splitter plate tail fiber interface and the combiner plate tail fiber interface of the electrical layer sub-rack through the tail fiber;
step S4, remotely controlling the electric control lever button of the light amplification dispersion compensation integrator to select the light amplification parameter interface of the light amplification area and the dispersion compensation parameter interface of the dispersion compensation area on the network management;
and step S5, opening the optical path channel to debug the channel.
2. The method of claim 1 wherein said method comprises processing OTN optical amplifiers and dispersion compensationThe method comprises the following steps: in the step S1, the conventional optical path attenuation measurement and calculation generally adopts a light source optical power meter instrument and meter to perform measurement and calculation, and also can adopt an optical signal to noise ratio OSNR 58 formula to perform calculation, where the formula is: OSNR is Pout-G-NF-10LogN + 58- (1),
wherein:
OSNR-Total channel optical Signal-to-noise ratio, dBm;
pout — average output power, dBm;
g-amplifier gain, dB;
NF-EDFA noise figure, dB;
pn-optical signal power of nth channel, mw;
nn-noise power within the equivalent noise bandwidth, mw;
bm-equivalent noise bandwidth, nm;
br-reference bandwidth, nm.
3. A method of handling OTN optical amplification and dispersion compensation as claimed in claim 1, wherein: the dispersion calculation formula is as follows:
s ═ L-Lx — (4), wherein:
s-need to compensate the dispersion coefficient, ps/nm.km;
lx-attenuation limited regeneration segment length, km;
Dmax-maximum total dispersion value allowed for the device between S (MPI-S), R (MPI-R), ps/nm;
d is the fiber dispersion coefficient, ps/nm.km.
4. A method of handling OTN optical amplification and dispersion compensation as claimed in claim 1, wherein: the optical amplifier dispersion compensation integrator comprises a main control board, wherein the main control board comprises two areas, and the main control board is divided into an optical power amplification area on the left side and a dispersion compensation area on the right side through a channel; the left end of the main control board is sequentially provided with a capacitor, a resistor and a radiating fan from top to bottom, built-in tail fibers are arranged at the left end and the right end of the main control board, the built-in tail fibers in the optical amplifier area are arranged on the right side of the radiating fan, a main control module is arranged on the main control board, a CPU is arranged in the main control module, and the main control module is arranged on the right side of the capacitor and the resistor; the main control board is provided with an optical amplification processing module and a dispersion compensation processing module which are arranged on the left and right sides, the optical amplification processing module and the dispersion compensation processing module are connected through a built-in optical fiber channel, and a connecting fiber of the optical amplification processing module and the dispersion compensation processing module is arranged in the built-in optical fiber channel; the main control panel is provided with a first electric control rod button and a second electric control rod button which are connected with the optical amplification processing module, and the main control panel is provided with a third electric control rod button and a fourth electric control rod button which are connected with the dispersion compensation processing module.
5. The method of claim 4, wherein the method further comprises: the left end and the right end of the lower surface of the main control board are both provided with equipment buckles for fixing the board card inserted into the equipment slot; the main control board lower surface is provided with external tail optical fiber interface at both ends about, just external tail optical fiber interface set up in the equipment buckle is inboard.
6. The method of claim 4, wherein the method further comprises: the left side surface of the optical amplification processing module is sequentially provided with a first built-IN pigtail IN1 interface, a first built-IN pigtail IN2 interface, a first built-IN pigtail OUT1 interface and a first built-IN pigtail OUT2 interface from top to bottom, the left end of the first built-IN pigtail IN rear connector selects the first built-IN pigtail IN1 interface or the first built-IN pigtail IN2 interface through the control of the first electric control lever, and the left end of the first built-IN pigtail OUT rear connector selects the first built-IN pigtail OUT1 interface or the first built-IN pigtail OUT2 interface through the control of the second electric control lever; the right side surface of the dispersion compensation processing module is sequentially provided with a second built-IN pigtail IN1 interface, a second built-IN pigtail IN2 interface, a second built-IN pigtail OUT1 interface and a second built-IN pigtail OUT2 interface from top to bottom, a second built-IN pigtail IN rear joint at the right end is connected with the second built-IN pigtail IN1 interface or the second built-IN pigtail IN2 interface through the control selection of the third electric control rod knob, and the second built-IN pigtail OUT rear joint is connected with the second built-IN pigtail OUT1 interface or the second built-IN pigtail OUT2 interface through the control selection of the fourth electric control rod knob.
7. The method of claim 4, wherein the method further comprises: the built-in tail optical fiber is fixed on the main control board through a plurality of tail optical fiber hoops, and a tail optical fiber mark is arranged on the built-in tail optical fiber.
8. The method of claim 4, wherein the method further comprises: the optical amplifier dispersion compensation integrated device comprises a first ODF optical fiber distribution unit, a first OTN optical layer sub-frame, an OTN electrical layer sub-frame, a second OTN optical layer sub-frame and a second ODF optical fiber distribution unit, wherein the first ODF optical fiber distribution unit is connected with a second transformer substation through an optical cable, the optical amplifier dispersion compensation integrated device plate for the OTN equipment is inserted into the clamping grooves of the first OTN optical layer sub-frame and the second OTN optical layer sub-frame, the first ODF optical fiber distribution unit is connected with the optical amplifier dispersion compensation integrated device plate for the OTN equipment of the first OTN optical layer sub-frame through a tail fiber, and the device board card of the first OTN optical layer sub-frame is connected with the first wave splitting plate and the first wave combining plate of the first OTN electrical layer sub-frame through the tail fiber; the second wave splitting plate and the second wave combining plate of the second OTN optical layer sub-frame are connected with the optical amplifier dispersion compensation integrator plate for the OTN equipment of the second OTN optical layer sub-frame through a tail fiber, the optical amplifier dispersion compensation integrator plate for the OTN equipment of the second OTN optical layer sub-frame is connected with the second ODF optical fiber distribution unit through the tail fiber, and the second ODF optical fiber distribution unit is connected with a first transformer substation through an optical cable; the optical amplifier dispersion compensation integrator plate for the OTN equipment is inserted into the clamping grooves of the first OTN optical layer sub-frame and the second OTN optical layer sub-frame, the external tail fiber interface of the optical amplifier dispersion compensation integrator plate for the OTN equipment is connected to the wave splitting plate and the wave combining plate tail fiber interface of the OTN electrical layer sub-frame through the external tail fiber, and the optical amplification parameter interface selection of an optical amplification area and the dispersion compensation parameter interface selection of a dispersion compensation area are controlled through the network management control electric control rod button, so that the transmission link opening of an optical link relay section is completed.
9. The method of claim 4, wherein the method further comprises: the left light power amplification area is provided with a first electric control rod button and a second electric control rod button; a third electric control rod button and a fourth electric control rod button are arranged in the right dispersion compensation area; the first electric control lever button, the second electric control lever button, the third electric control lever button and the fourth electric control lever button are consistent in structure, the first electric control lever button comprises a base, the base is connected to a main control board, an electric control remote lever arm is arranged on the base, clamping clamps are arranged at the left end and the right end of the upper surface of the electric control remote lever arm, and a rear connector with a built-in tail fiber is arranged on the electric control remote lever arm; and remotely operating the electric control remote lever arm through a network manager to connect the first built-IN pigtail IN rear connector into the optical amplification processing module.
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