CN108777096B - SDH looped network transmission optical fiber link construction maintenance teaching device and use method - Google Patents
SDH looped network transmission optical fiber link construction maintenance teaching device and use method Download PDFInfo
- Publication number
- CN108777096B CN108777096B CN201810371817.8A CN201810371817A CN108777096B CN 108777096 B CN108777096 B CN 108777096B CN 201810371817 A CN201810371817 A CN 201810371817A CN 108777096 B CN108777096 B CN 108777096B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- ring network
- sdh
- sdh ring
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Algebra (AREA)
- Entrepreneurship & Innovation (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
A SDH looped network transmission optical fiber link construction maintenance teaching device comprises an SDH looped network main optical fiber link, an SDH looped network standby optical fiber link, an SDH looped network main node and an SDH looped network slave node; the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link form an SDH ring network topological structure, the SDH ring network topological structure is a two-fiber one-way channel protection ring structure, and optical fibers in the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link are step type single mode optical fibers. Through flexible configuration, the SDH ring network topology can be visually displayed to students. The student can transmit optical signals with different powers and wavelengths to the SDH network by setting light source parameters, and the practical operation, analysis and calculation capability of the student in the SDH ring network optical fiber link construction maintenance is enhanced by analyzing and calculating the practical measurement numerical value.
Description
Technical Field
The invention belongs to the technical field of teaching and practical training equipment, and relates to a SDH looped network transmission optical fiber link construction maintenance teaching device and a using method thereof.
Background
The SDH (synchronous digital hierarchy) transmission ring network can realize flexible service deployment, is suitable for network transmission between points, has a certain network protection function, and has wide application in the field of rail transit. In the optical fiber SDH ring network construction process, the length of an optical fiber, the attenuation of the optical fiber, the average attenuation of the optical fiber, the optical fiber obstruction, and the like have a great influence on the transmission of optical signals.
When studying the SDH ring network, a student learns the topological graph and the optical fiber construction process of the SDH, but because the existing SDH network equipment has a long compartment distance, the student is limited by the network region, cannot clearly and intuitively see a signal transmission route and know the optical fiber link length, attenuation and average attenuation calculation process of the SDH ring network, and cannot clearly and accurately identify various barrier points of the optical link of the SDH ring network, therefore, the SDH ring network transmission optical fiber link construction maintenance teaching device and the using method are provided, the student can watch the optical signal transmission process of the SDH ring network, and acquire first-hand measurement data to calculate and analyze optical fiber link data, so that the construction maintenance capability of the optical fiber link of the SDH ring network is improved.
The patent with the authorization number of CN103761905B discloses an optical fiber fault detection teaching device and a using method thereof, which consists of an optical fiber distribution frame and an optical fiber link arranged in the optical fiber distribution frame, and shows different fault point tests in the optical fiber link. However, in the method, the bare fiber and the fault point fiber are both placed in a distribution frame, the link is too short, and the existing OTDR instrument has certain resolution, so that a certain blind area exists, and the fault point waveform cannot be detected. In addition, the patent does not relate to some important index analysis processes in the optical fiber construction process, such as the length of the optical fiber, the attenuation of the optical fiber, the average attenuation of the optical fiber and the like, and the content of the SDH looped network knowledge is not shown.
Disclosure of Invention
The invention provides a novel SDH looped network transmission optical fiber link construction maintenance teaching device and a use method thereof, aiming at the problem that the conventional SDH looped network knowledge content display equipment is deficient.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a SDH looped network transmission optical fiber link construction maintenance teaching device comprises an SDH looped network main optical fiber link, an SDH looped network standby optical fiber link, an SDH looped network main node (1) and an SDH looped network slave node (2);
the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link form an SDH ring network topological structure, the SDH ring network topological structure is a two-fiber one-way channel protection ring structure, and optical fibers in the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link are step type single mode optical fibers.
Preferably, the primary optical fiber link of the SDH ring network includes a bare fiber a (4), a bare fiber B (8), a fault point device (6), a hop fiber a (3), a hop fiber B (5), a hop fiber C (7), and a hop fiber D (9); the bare fiber A (4) is connected with the fault point device (6) through a jump fiber B (5) and is connected with the SDH looped network main node (1) through a jump fiber A (3); the bare fiber B (8) is connected with the fault point device (6) through a jump fiber C (7) and is connected with the SDH looped network slave node (2) through a jump fiber D (9).
Preferably, the SDH ring network standby optical fiber link includes a bare fiber C (11), a hop fiber E (12), and a hop fiber F (10); the bare fiber C (11) is connected with the main node (1) of the SDH ring network through a hop fiber E (12) and is connected with the slave node (2) of the SDH ring network through a hop fiber F (10).
Preferably, the SDH ring network main node (1) comprises a light source and an OTDR, and output ports of the light source and the OTDR are LC type; the SDH looped network slave node (2) comprises an optical power meter, and an output port of the optical power meter is of an LC type; the roles of the SDH ring network master node (1) and the SDH ring network slave node (2) can be interchanged.
Preferably, the fault point device (6) comprises a jump fiber G, a jump fiber H, a jump fiber I, a jump fiber J, a quadruple adapter A and a quadruple adapter B; the jump fiber G is an extruded optical fiber, the jump fiber H is a broken optical fiber, the jump fiber I is a sharp-bent optical fiber, and the attenuation rate of the jump fiber J is 3 dB; one end of the jumping fiber G is connected with a port A _1 of the quadruple adapter A, and the other end of the jumping fiber G is connected with a port B _1 of the quadruple adapter B; one end of the jumping fiber H is connected with a port A _2 of the quadruple adapter A, and the other end of the jumping fiber H is connected with a port B _2 of the quadruple adapter B; one end of the jumping fiber I is connected with a port A _3 of the quadruple adapter, and the other end of the jumping fiber I is connected with a port B _3 of the quadruple adapter; one end of the jumping fiber J is connected with a port A _4 of the quadruple adapter A, and the other end is connected with a port B _4 of the quadruple adapter B.
Preferably, the optical coupler in the SDH ring network main optical fiber link adopts an LC mode, and optical loss is less than 0.03 dB. The amount of optical loss at the optical coupler is negligible and does not affect the optical loss calculation in the optical fiber link.
The use method of the SDH looped network transmission optical fiber link construction maintenance teaching device comprises the following steps:
(1) SDH ring network transmission optical fiber link attenuation analysis
Operating the light source equipment of the main node (1) of the SDH ring network, transmitting optical signals with two wavelengths of 1310nm and 1550nm into the main optical fiber link and the standby optical fiber link of the SDH ring network, and subtracting the power of the optical signals received by the optical power equipment of the slave node (2) of the SDH ring network from the power of the two wavelengths of the main optical fiber link and the standby optical fiber link of the SDH ring network to obtain the attenuation of the transmission optical fiber link of the SDH ring network; the power of two wavelengths transmitted in the main/standby optical fiber link is respectively P1/P2/P3/P4; and operating slave node optical power equipment of the SDH ring network, wherein the power of the received optical signal is P5/P6/P7/P8 respectively. Calculating the attenuation of the SDH looped network transmission optical fiber link as follows: P1-P5/P2-P6/P3-P7/P4-P8, with the unit of dbm.
(2) SDH ring network transmission optical fiber link average attenuation analysis
The method comprises the steps of operating the OTDR equipment of the main node (1) of the SDH ring network, transmitting optical signals with two wavelengths of 1310nm and 1550nm into a main optical fiber link of the SDH ring network and a standby optical fiber link of the SDH ring network, measuring the length of the optical fiber link, and calculating the average attenuation of the optical fiber link. Optical signals with two wavelengths of 1310nm and 1550nm are transmitted into a main optical fiber link and a standby optical fiber link of an SDH looped network, the length of the optical fiber link is measured to be L1/L2/L3/L4, and then the calculation formula of the average attenuation of the optical fiber link is P = (P1-P5) ÷ L1/(P2-P6) ÷ L2/(P3-P7) ÷ L3/(P4-P8) ÷ L4, and the unit is dbm/km.
(3) The SDH ring network transmission optical fiber link various types of obstacle point analysis comprises the following items:
a. connecting a jump fiber G of a fault point device (6) to a primary optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network to be connected to the primary optical fiber link of the SDH ring network, observing whether a large-step jump point exists in an OTDR curve, and recording the position of the jump point and the waveform of the optical fiber link if the large-step jump point exists in the OTDR curve;
b. connecting a jump fiber H of a fault point device (6) to a main optical fiber link of an SDH ring network, operating an OTDR (optical time domain reflectometer) device of a main node (1) of the SDH ring network, observing whether a reflection peak exists in an OTDR curve, and recording the position of a broken point and the waveform of the optical fiber link if the reflection peak exists;
c. connecting a jump fiber I of a fault point device (6) to a main optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network, observing a magic peak in an OTDR curve, and recording an optical fiber bending position and an optical fiber link waveform;
d. connecting a jump fiber J of a fault point device (6) to a main optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network, observing a jump point with a larger slope in an OTDR curve, and recording an attenuation position and an optical fiber link waveform;
e. and the OTDR equipment for operating the main node (1) of the SDH ring network is connected to the spare optical fiber link of the SDH ring network, and the optical fiber transmission waveform is recorded and compared with the fault point waveform of the main optical fiber link of the SDH ring network.
Compared with the prior art, the invention has the advantages and positive effects that:
the teaching device for the construction maintenance of the optical fiber link of the SDH looped network transmission and the use method thereof can intuitively display the network topology of the SDH looped network to students through flexible configuration. The student can transmit optical signals with different powers and wavelengths to the SDH network by setting light source parameters, obtain actual measurement values in an optical link through an optical power meter and an OTDR, and analyze and calculate information such as the length of an optical fiber, the attenuation of the optical fiber, the average attenuation of the optical fiber, the position of an optical fiber obstacle point and the like, so that the practical manual, analysis and calculation capacity of the student in the SDH ring network optical fiber link construction maintenance is enhanced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The figures are numbered: the system comprises a 1SDH ring network main node, a 2SDH ring network slave node, 3-hop fibers A, 4-hop bare fibers A, 5-hop fibers B, 6-hop fault point devices, 7-hop fibers C, 8-hop bare fibers B, 9-hop fibers D, 10-hop fibers F, 11-hop bare fibers C and 12-hop fibers E.
Detailed Description
In order that the above objects, features and advantages of the present invention may be more clearly understood, the present invention will be further described with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
In embodiment 1, as shown in fig. 1, an apparatus body includes an SDH ring network primary optical fiber link and an SDH ring network backup optical fiber link, an SDH ring network master node (1), and an SDH ring network slave node (2). The SDH ring network topological structure is a two-fiber one-way channel protection ring structure. The protection ring is composed of a main optical fiber link and a standby optical fiber link. The optical fibers in the main optical fiber link and the standby optical fiber link of the SDH ring network are step-type single-mode optical fibers, the lengths of the two optical fiber links are both 20Km in order to show the SDH ring network to students, and optical signals do not need to be relayed in the network during transmission.
The SDH ring network main optical fiber link comprises a bare fiber A (4), a bare fiber B (8), a fault point device (6), a jump fiber A (3), a jump fiber B (5), a jump fiber C (7) and a jump fiber D (9). The bare fiber A (4) is connected with the fault point device (6) through the jump fiber B (5) and is connected with the SDH looped network main node (1) through the jump fiber A (3); the bare fiber B (8) is connected with the fault point device (6) through a jump fiber C (7) and is connected with the SDH looped network slave node (2) through a jump fiber D (9). In order to enable the OTDR to clearly test the optical fiber fault point, considering the resolution of the OTDR and avoiding the blind area, the lengths of the bare fiber a (4) and the bare fiber B (8) selected in this embodiment are both 10Km, and the lengths of the jumper fiber a (3), the jumper fiber B (5), the jumper fiber C (7) and the jumper fiber D (9) are both 1.5m, the optical attenuation amount thereof is less than 0.03dB, and the optical loss ratio of the whole link is negligible. The specific implementation process can appropriately lengthen the bare fiber length, but the length of the bare fiber is not larger than 20Km considering the optical transmission relay.
The fault point device comprises a jump fiber G, a jump fiber H, a jump fiber I, a jump fiber J, a quadruple adapter A and a quadruple adapter B. The jumping fiber G is an extruded optical fiber, the jumping fiber H is a broken optical fiber, the jumping fiber I is a sharply bent optical fiber, and the jumping fiber J is an optical fiber with attenuation rate of 3 dB; the jump fiber G is connected with a port A _1 of a quadruple adapter A and a port B _1 of a quadruple adapter B; the jump fiber H is connected with a port A _2 of a quadruple adapter A and a port B _2 of a quadruple adapter B; the jumping fiber I is connected with a port A _3 of a quadruple adapter A and a port B _3 of a quadruple adapter B; the jump fiber J is connected with a port A _4 of a quadruple adapter A and a port B _4 of a quadruple adapter B; in the embodiment, the lengths of the hop fibers G, H, I and J are 1m, the optical attenuation amount is less than 0.03dB, and the optical loss ratio of the whole link is negligible. In the process of operating the device, the jump fiber G, the jump fiber H, the jump fiber I and the jump fiber J are respectively connected in series to the primary optical fiber link of the SDH ring network, and can also be connected in series to the primary optical fiber link of the SDH ring network, and various fault point positions and optical fiber link waveforms are observed through OTDR.
The spare optical fiber link of the SDH ring network comprises a bare fiber C (11), a hop fiber E (12) and a hop fiber F (10). The bare fiber C (11) is connected with a main node (1) of the SDH ring network through a hop fiber E (12) and is connected with a slave node (2) of the SDH ring network through a hop fiber F (10). In this embodiment, in comparison with the primary optical fiber link of the SDH ring network, the length of the bare fiber C (11) is 20Km, and the lengths of the jumper fiber E (12) and the jumper fiber F (10) are 3.5m, respectively.
The main node of the SDH ring network comprises a light source and an OTDR (optical time domain reflectometer), the output ports of the light source and the OTDR are LC type ports, the power sent by the light source is between-20 dbm and 10dbm, and the wavelength can be selected from 1331nm and 1550 nm; the slave node of the SDH ring network comprises an optical power meter, and the output port of the optical power meter is an LC type port; the main node and the slave node of the SDH ring network can exchange roles;
the optical couplers in the main/standby optical fiber links in the SDH ring network all adopt an LC type port mode, the optical loss is less than 0.03dB, the optical loss at the optical couplers can be ignored, and the optical loss calculation in the optical fiber links is not influenced.
The use method of the SDH looped network transmission optical fiber link construction maintenance teaching device comprises the following steps:
(1) analyzing SDH looped network transmission optical fiber link attenuation
And operating main node light source equipment of the SDH ring network, and transmitting optical signals with 1310nm wavelength and power of 8dbm into the main optical fiber link and the standby optical fiber link of the SDH ring network. The power of the optical signals transmitted in the two optical fiber links is P1/P2; and operating the SDH ring network to operate the optical power equipment from the node, wherein the power of the received optical signals in the two optical fiber links is P3/P4 respectively. The SDH looped network transmission optical fiber link attenuation is calculated as follows: P1-P3/P2-P4 in dbm.
(2) Analyzing average attenuation of SDH looped network transmission optical fiber link
Operating main node OTDR equipment of an SDH ring network, transmitting an optical signal with a wavelength of 1310nm into a main optical fiber link and a standby optical fiber link of the SDH ring network, measuring the length of the two optical fiber links to be L1/L2, and measuring the average attenuation of the optical fiber links to be P = (P1-P2) ÷ L1/(P2-P4) ÷ L2, wherein the unit is dbm/km.
(3) Analyzing various types of obstacle points of SDH looped network transmission optical fiber link
Connecting a fault point device jumping fiber G of a main optical fiber link of the SDH ring network to the link, operating a main node OTDR device of the SDH ring network to be connected to the main optical fiber link of the SDH ring network, observing that a large-step jumping point exists in an OTDR curve, and recording the position and the waveform of the jumping point;
connecting a fault point device jump fiber H of a main optical fiber link of the SDH ring network to the link, operating main node OTDR equipment of the SDH ring network, observing that no reflection peak exists in an OTDR curve, and recording the position and the waveform of a broken point;
connecting a fault point device jump fiber I of a main optical fiber link of the SDH ring network to the link, operating main node OTDR equipment of the SDH ring network, observing that a magic peak exists in an OTDR curve, and recording the bending position and the waveform of an optical fiber;
connecting a fault point device jumping fiber J of a main optical fiber link of the SDH ring network to the link, operating main node OTDR equipment of the SDH ring network, observing that a jumping point with a larger slope exists in an OTDR curve, and recording the position and the waveform of an attenuation part;
and operating the main node OTDR equipment of the SDH ring network to connect to the spare optical fiber link of the SDH ring network, recording the intact optical fiber transmission waveform, and comparing the waveform with the fault point waveform of the main optical fiber link.
Through the three steps, the student can watch the two-fiber one-way channel protection ring structure transmitted by the SDH ring network, and the calculation and analysis of the optical fiber link data are carried out according to the first hand of measurement data acquired on site, so that the construction and maintenance capability of the optical fiber link of the SDH ring network is improved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (2)
1. A construction maintenance teaching device for an optical fiber link for transmission of an SDH ring network is characterized by comprising an SDH ring network main optical fiber link, an SDH ring network standby optical fiber link, an SDH ring network main node (1) and an SDH ring network slave node (2);
the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link form an SDH ring network topological structure, the SDH ring network topological structure is a two-fiber one-way channel protection ring structure, and optical fibers in the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link are step type single mode optical fibers; the SDH ring network main optical fiber link comprises a bare fiber A (4), a bare fiber B (8), a fault point device (6), a jump fiber A (3), a jump fiber B (5), a jump fiber C (7) and a jump fiber D (9); the bare fiber A (4) is connected with the fault point device (6) through a jump fiber B (5) and is connected with the SDH looped network main node (1) through a jump fiber A (3); the bare fiber B (8) is connected with the fault point device (6) through a jump fiber C (7) and is connected with the SDH looped network slave node (2) through a jump fiber D (9); the SDH ring network standby optical fiber link comprises a bare fiber C (11), a hop fiber E (12) and a hop fiber F (10); the bare fiber C (11) is connected with the master node (1) of the SDH ring network through a hop fiber E (12) and is connected with the slave node (2) of the SDH ring network through a hop fiber F (10); the lengths of the SDH ring network main optical fiber link and the SDH ring network standby optical fiber link are both 20 Km;
the SDH ring network main node (1) comprises a light source and an OTDR, and output ports of the light source and the OTDR are LC type; the SDH looped network slave node (2) comprises an optical power meter, and an output port of the optical power meter is of an LC type; the roles of the SDH ring network master node (1) and the SDH ring network slave node (2) can be interchanged;
the fault point device (6) comprises a jumping fiber G, a jumping fiber H, a jumping fiber I, a jumping fiber J, a quadruple adapter A and a quadruple adapter B; the jump fiber G is an extruded optical fiber, the jump fiber H is a broken optical fiber, the jump fiber I is a sharp-bent optical fiber, and the attenuation rate of the jump fiber J is 3 dB; one end of the jumping fiber G is connected with a port A _1 of the quadruple adapter A, and the other end of the jumping fiber G is connected with a port B _1 of the quadruple adapter B; one end of the jumping fiber H is connected with a port A _2 of the quadruple adapter A, and the other end of the jumping fiber H is connected with a port B _2 of the quadruple adapter B; one end of the jumping fiber I is connected with a port A _3 of the quadruple adapter, and the other end of the jumping fiber I is connected with a port B _3 of the quadruple adapter; one end of the jumping fiber J is connected with a port A _4 of the quadruple adapter A, and the other end of the jumping fiber J is connected with a port B _4 of the quadruple adapter B;
the optical coupler in the SDH ring network main optical fiber link adopts an LC mode, and the optical loss is less than 0.03 dB.
2. A use method of the SDH ring network transmission optical fiber link construction maintenance teaching device of claim 1, characterized in that: comprises the steps of
(1) SDH ring network transmission optical fiber link attenuation analysis
Operating the light source equipment of the main node (1) of the SDH ring network, transmitting optical signals with two wavelengths of 1310nm and 1550nm into the main optical fiber link and the standby optical fiber link of the SDH ring network, and subtracting the power of the optical signals received by the optical power equipment of the slave node (2) of the SDH ring network from the power of the two wavelengths of the main optical fiber link and the standby optical fiber link of the SDH ring network to obtain the attenuation of the transmission optical fiber link of the SDH ring network;
(2) SDH ring network transmission optical fiber link average attenuation analysis
Operating OTDR equipment of a main node (1) of the SDH ring network, transmitting optical signals with two wavelengths of 1310nm and 1550nm into a main optical fiber link of the SDH ring network and a standby optical fiber link of the SDH ring network, measuring the length of the optical fiber link, and calculating the average attenuation of the optical fiber link;
(3) SDH ring network transmission optical fiber link various types of obstacle point analysis
a. Connecting a jump fiber G of a fault point device (6) to a primary optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network to be connected to the primary optical fiber link of the SDH ring network, observing a large-step jump point in an OTDR curve, and recording the position of the jump point and the waveform of the optical fiber link;
b. connecting a jump fiber H of a fault point device (6) to a main optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network, observing a reflection peak in an OTDR curve, and recording the position of a broken point and the waveform of the optical fiber link;
c. connecting a jump fiber I of a fault point device (6) to a main optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network, observing a magic peak in an OTDR curve, and recording an optical fiber bending position and an optical fiber link waveform;
d. connecting a jump fiber J of a fault point device (6) to a main optical fiber link of an SDH ring network, operating an OTDR device of a main node (1) of the SDH ring network, observing a jump point with a larger slope in an OTDR curve, and recording an attenuation position and an optical fiber link waveform;
e. and the OTDR equipment for operating the main node (1) of the SDH ring network is connected to the spare optical fiber link of the SDH ring network, and the optical fiber transmission waveform is recorded and compared with the fault point waveform of the main optical fiber link of the SDH ring network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371817.8A CN108777096B (en) | 2018-04-24 | 2018-04-24 | SDH looped network transmission optical fiber link construction maintenance teaching device and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371817.8A CN108777096B (en) | 2018-04-24 | 2018-04-24 | SDH looped network transmission optical fiber link construction maintenance teaching device and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108777096A CN108777096A (en) | 2018-11-09 |
| CN108777096B true CN108777096B (en) | 2020-12-01 |
Family
ID=64026558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810371817.8A Active CN108777096B (en) | 2018-04-24 | 2018-04-24 | SDH looped network transmission optical fiber link construction maintenance teaching device and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108777096B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984561B (en) * | 2010-11-15 | 2014-09-10 | 中兴通讯股份有限公司 | System and method for detecting optical fiber faults of passive optical network |
| CN103268718B (en) * | 2013-05-28 | 2014-12-17 | 上海电子信息职业技术学院 | Optical fiber fault testing system for teaching |
| CN203340080U (en) * | 2013-06-09 | 2013-12-11 | 上海电子信息职业技术学院 | Fiber local side equipment fault testing box for teaching |
| CN103761905B (en) * | 2014-01-21 | 2016-03-23 | 广东交通职业技术学院 | Fiber failure detects instructional device and using method |
| EP3179649B1 (en) * | 2015-12-07 | 2019-09-11 | Deutsche Telekom AG | Method and system for effective data transmission in an optical telecommunication network in wavelength multiplex operation |
-
2018
- 2018-04-24 CN CN201810371817.8A patent/CN108777096B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108777096A (en) | 2018-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110226297B (en) | Method, medium and optical network for locating events in optical network | |
| CN102523037B (en) | Centralized monitoring and managing system for optical cable resources | |
| CN103297126B (en) | The PON line fault monitoring method of optically-based labelling method and device thereof | |
| US9130672B2 (en) | System and method for fault identification in optical communication systems | |
| CN106788696A (en) | The monitoring of optical cable on-line intelligence and fault location system based on GIS platform | |
| CN108880668A (en) | A kind of railway optical cable real-time monitoring system for state and method | |
| JP5948368B2 (en) | Optical fiber characterization method | |
| CN104655591B (en) | A kind of optical cable generaI investigation device and method of detection beating position | |
| WO2004066510A3 (en) | Otdr arrangement for detecting faults in an optical transmission system employing two pairs of unidirectional optical fibers | |
| JPWO2010101001A1 (en) | Optical transmission monitoring device | |
| US8873947B2 (en) | Method and apparatus for determining fiber characteristics in an optical communication network | |
| US11885707B2 (en) | Fiber span characterization utilizing paired optical time domain reflectometers | |
| WO2020245893A1 (en) | Determination device and determination method | |
| CN105553543B (en) | A kind of coherent light time domain reflection meter calibrating device and method | |
| CN108777096B (en) | SDH looped network transmission optical fiber link construction maintenance teaching device and use method | |
| JP5298043B2 (en) | Optical cable laying environment measuring method, optical cable laying environment measuring device, and optical cable laying environment measuring system | |
| JP6393563B2 (en) | Optical fiber evaluation method and evaluation apparatus | |
| JP4504789B2 (en) | Optical communication system and optical test apparatus | |
| JP4246037B2 (en) | Optical line characteristic analysis method and optical line test monitoring system | |
| CN203301485U (en) | PON (Passive Optical Network) line fault monitoring device based on optical mark method | |
| JP5236179B2 (en) | Line quality confirmation device for optical signal transmission system | |
| Bogachkov et al. | Improvement of the monitoring systems of fiber optical communication lines | |
| JP5475710B2 (en) | Optical fiber measuring device, optical fiber measuring method, and line switching work method | |
| JP4728991B2 (en) | Optical line monitoring method, optical line monitoring system, optical line monitoring device and program thereof | |
| JP2008032592A (en) | Optical fiber air route surveillance system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |