CN101968562B - Uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion modules - Google Patents
Uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion modules Download PDFInfo
- Publication number
- CN101968562B CN101968562B CN 201010298273 CN201010298273A CN101968562B CN 101968562 B CN101968562 B CN 101968562B CN 201010298273 CN201010298273 CN 201010298273 CN 201010298273 A CN201010298273 A CN 201010298273A CN 101968562 B CN101968562 B CN 101968562B
- Authority
- CN
- China
- Prior art keywords
- cutover
- cable
- polarization mode
- mode dispersion
- 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.)
- Active
Links
Images
Abstract
The invention discloses an uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion module, which comprises the following steps of: determining that cable routes to be cut and spliced are relatively static, respectively arranging an interference light source and a polarization mode dispersing instrument at two terminals of a cable to be cut, and setting a threshold value of a dispersion coefficient; and under the radiation of two interference light sources, measuring and recording a static polarization mode dispersion average value of a first cable at the terminal of the cable to be cut; informing constructors on site of bending the cable respectively and horizontally rocking constantly, measuring and recording a dynamic polarization mode dispersion average value thereof, comparing the polarization mode dispersion average values to judge whether the values are obviously changed, if so, determining that the cable is the cable to be cut and spliced and is cut and spliced. On the premise of not interrupting cable communication, cables corresponding to two cutting and splicing ends are accurately and quickly recognized, and can be quickly cut and spliced, so the technical problem of difficult recognition due to weak signals is solved, and the method can be widely applied to the cutting and splicing operation of the urban pipeline communication cable.
Description
Technical field
The invention belongs to the construction method that communications optical cable does not interrupt cutover.
Background technology
Along with the fast development of telecommunications and the scale of urban road construction constantly enlarged in recent years.Continue to enlarge for satisfying city space and extension, the demand that mechanics of communication increases fast, the optical cable relocating work becomes the most important thing day by day.But because a variety of causes causes the source book of urban duct inaccurate, add that the sign of communications optical cable is lost, work causes a lot of difficulties to optical cable cleft grafting.In the working-yard of optical cable cleft grafting, be difficult to accurately the identification of carrying out optical cable, the cutover of safety.When in the present urban duct optical cable cleft grafting engineering optical cable of wanting cutover being discerned, mainly rely on cable detector and utilize artificial row's mould combination optical time domain reflectometer or these two kinds of main means of visible light to discern.
Use cable detector, send detectable signal, survey the signal that leaks is wanted cutover with differentiation optical cable with instrument in relevant manhole or on the ground in the section that begins.In view of landforms and cable configuration, the influence of the various undesired signals of cutover distance location and city, make that the signal that leaks is very faint, be difficult to identification, have suitable blindness.Owing to utilize source book to take from the terminal manual type and combine the drop identity to the construction operation point; Utilize the stripping fiber optic cables sheath again or open the joint bag and take the terminal red-emitting or artificially make lossy and judge that with the OTDR appearance there is certain destructiveness in this method.
Raising along with the optical cable transfer rate; Polarization dispersion more and more can not be underestimated the influence of communication system in the single-mode fiber; Polarization mode dispersion (Polarization Mode Dispersion; Abbreviation PMD) module is exactly a kind of instrument of measuring polarization dispersion in the single-mode fiber, for a long time, does not have any teachings of the polarization mode dispersion module application not being interrupted the cutover construction in communications optical cable.
Summary of the invention
The purpose of this invention is to provide a kind of urban duct communications optical cable of using the polarization mode dispersion module and do not interrupt method for cutting over, solve accurately, the quick identification optical cable, realize the technical matters that optical cable does not interrupt cutover.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of urban duct communications optical cable of using the polarization mode dispersion module does not interrupt method for cutting over, it is characterized in that step is following:
Workman in the step 7, first people's well implements crooked to the optical fiber of wanting cutover; And transverse shakiness constantly, under the irradiation of interfering light source, use the polarization mode dispersion appearance and measure by the dynamic polarization modal dispersion value of cutover optical fiber; The static polarization mode dispersion mean value and the dynamic polarization modal dispersion value of step 5 are compared; Judge whether measured value has significant change, this root optical fiber of then preliminary judgement that significant change is arranged is by cutover optical fiber, otherwise is not; If not then change next root optical fiber, end until finding by cutover optical fiber.
Step 9, six to eight method judges that second which the root optical fiber to last people's well by cutover optical fiber, all is determined by cutover optical fiber in everyone well set by step.
Step 10 is carried out cutover to being judged to be the optical fiber of wanting cutover.
Said interference light source is a Young's interferometer.
About in the said step 6 being 0.1～0.3 meter by the amplitude of the transverse shakiness of cutover optical fiber.
Be 0～0.4 radian by the crooked radian in two terminals of cutover optical fiber in the said step 6.
Static polarization mode dispersion mean value in said step 5 and the step 6 and dynamic polarization modal dispersion mean value are through continuous three times, four times, the assembly average that measures more than five times or five times.
Compared with prior art the present invention has following characteristics and beneficial effect: the present invention has developed the new purposes of polarization mode dispersion module; Utilize polarization mode dispersion PMD to the highstrung characteristic of the influence of external force, and use the polarization mode dispersion module, cooperate and interfere light source and simple artificial manipulation; Can be under the not interrupted prerequisite of fiber optic cable communications; Accurately, the corresponding optical cable in quick identification cutover two ends, realize the optical cable flash cut, make the communications optical cable cutover further improve aspect security and the accuracy; Reduce blindness and destructiveness in the cutover work progress, avoided other its photoelectricity of optical cable that does not need cutover and the infringement of mechanical property.The present invention has overcome the conventional use cable detector and has very easily received various signals and disturb the shortcoming with the cutover distance affects, has solved owing to the impalpable technical matters of weak output signal, can be widely used in the cutover operation of urban duct communications optical cable.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Fig. 1 is a general arrangement schematic of the present invention.
Fig. 2 is a scheme synoptic diagram of the present invention.
Reference numeral: 1-cutover cable, 2-interfere light source, 3-polarization mode dispersion instrument, 4-people's well, 5-commanding, 6-workman, 7-first ground communications equipment room, 8-second ground communications equipment room.
Embodiment
Referring to shown in Figure 1, the urban duct communications optical cable of this application polarization mode dispersion module does not interrupt method for cutting over, and step is following:
Workman in the step 7, first people's well, the optical fiber of cutover is implemented crooked, and transverse shakiness constantly, (referring to the arrow that reverses among Fig. 2), its crooked radian is 0～0.4 radian, the amplitude of transverse shakiness be about 0.1～0.3 meter.Under the irradiation of interfering light source; Use the polarization mode dispersion appearance and measure by the dynamic polarization modal dispersion value of cutover optical fiber, static polarization mode dispersion mean value and the dynamic polarization modal dispersion value of step 5 compared, whether the judgement measured value has significant change; This root optical fiber of then preliminary judgement that significant change is arranged is by cutover optical fiber; Otherwise not, to end until finding by cutover optical fiber if not then change next root optical fiber.
Step 9, six to eight method judges that second which the root optical fiber to last people's well by cutover optical fiber, all is determined by cutover optical fiber in everyone well set by step.
Step 10 is carried out cutover to being judged to be the optical fiber of wanting cutover.
Claims (5)
1. a urban duct communications optical cable of using the polarization mode dispersion module does not interrupt method for cutting over, it is characterized in that step is following:
Step 1 is confirmed optical cable route correct with infrared emission with receiving at the two ends of cutover cable (1), guarantees it is the two ends of same optical cable;
Step 2, whenever being separated by is provided with people's well (4) with equidistant, and guarantees do not have the workmen in people's well, to construct on the route of cutover cable, keeps the static relatively of this optical cable;
Step 3, the terminal of cutover cable (1) in first ground communications equipment room (7) are placed and are interfered light source (2), and polarization mode dispersion instrument (3) is placed at the terminal of (8) in second ground communications equipment room;
Step 4 is set the threshold values of the abbe number of above-mentioned polarization mode dispersion instrument;
Step 5 under the irradiation of interfering light source, is used the static polarization mode dispersion value of polarization mode dispersion instrument measurement cutover cable, and continuous coverage obtains an assembly average of cutover cable polarization mode dispersion index under normal circumstances, and notes down;
Step 6 the commanding of polarization mode dispersion instrument end, is notified the workman in first people's well, on the cutover point of cutover cable, cooperates the operation of test, and the workman in other people well can not touch any optical cable;
Workman in the step 7, first people's well implements crooked to the optical fiber of wanting cutover; And transverse shakiness constantly, under the irradiation of interfering light source, use the polarization mode dispersion appearance and measure by the dynamic polarization modal dispersion value of cutover optical fiber; The static polarization mode dispersion mean value and the dynamic polarization modal dispersion value of step 5 are compared; Judge whether measured value has significant change, this root optical fiber of then preliminary judgement that significant change is arranged is by cutover optical fiber, otherwise is not; If not then change next root optical fiber, till finding by cutover optical fiber;
Step 8; Preliminary judgement by the condition of cutover optical fiber under; The commanding notifies first workman in people's well to stop at once rocking; The polarization mode dispersion index should be returned to before this near the assembly average, and continuous coverage dynamic polarization modal dispersion value is a cutover cable if this root optical fiber of then judgement of significant change is all arranged at every turn again;
Step 9, six to eight method judges that second which the root optical fiber to last people's well by cutover optical fiber, all is determined by cutover optical fiber in everyone well set by step;
Step 10 is carried out cutover to being judged to be the optical fiber of wanting cutover.
2. the urban duct communications optical cable of application polarization mode dispersion module according to claim 1 does not interrupt method for cutting over, it is characterized in that: said interference light source is a Young's interferometer.
3. the urban duct communications optical cable of application polarization mode dispersion module according to claim 1 does not interrupt method for cutting over, it is characterized in that: about in the said step 7 by the amplitude of the transverse shakiness of cutover optical fiber being 0.1～0.3 meter.
4. the urban duct communications optical cable of application polarization mode dispersion module according to claim 1 does not interrupt method for cutting over, it is characterized in that: be 0～0.4 radian by the crooked radian in two terminals of cutover optical fiber in the said step 7.
5. the urban duct communications optical cable of application polarization mode dispersion module according to claim 1 does not interrupt method for cutting over, it is characterized in that: the static polarization mode dispersion mean value in said step 5 and the step 7 is through continuous three times, four times, the assembly average that measures more than five times or five times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010298273 CN101968562B (en) | 2010-09-30 | 2010-09-30 | Uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010298273 CN101968562B (en) | 2010-09-30 | 2010-09-30 | Uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion modules |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101968562A CN101968562A (en) | 2011-02-09 |
| CN101968562B true CN101968562B (en) | 2012-05-23 |
Family
ID=43547746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010298273 Active CN101968562B (en) | 2010-09-30 | 2010-09-30 | Uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101968562B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3734667B2 (en) * | 2000-03-14 | 2006-01-11 | アンリツ株式会社 | Polarization mode dispersion measurement method and polarization mode dispersion measurement system |
| JP3880360B2 (en) * | 2001-10-12 | 2007-02-14 | 株式会社アドバンテスト | Polarization mode dispersion measuring apparatus, method, and recording medium |
| JP4008470B2 (en) * | 2002-07-19 | 2007-11-14 | 株式会社フジクラ | Measuring method and apparatus for measuring polarization mode dispersion of optical fiber |
| JP2004271277A (en) * | 2003-03-06 | 2004-09-30 | Global Fiber Optics:Kk | Polarization dispersion analysis method, apparatus thereof, and polarization dispersion compensating apparatus |
| RU2339982C2 (en) * | 2003-10-22 | 2008-11-27 | Фудзикура Лтд. | Optical fibre and method of measuring polarisation modal dispersion of optical fibre |
| CN101127094B (en) * | 2007-09-14 | 2011-04-20 | 上海电信工程有限公司 | Method for on the spot identification for local network optical cable line |
-
2010
- 2010-09-30 CN CN 201010298273 patent/CN101968562B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101968562A (en) | 2011-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109347547A (en) | A kind of communication cable failure geographical location enquiry positioning method | |
| US9749043B2 (en) | Method for referencing an optical power loss measurement system, and associated computer readable memory and OPLM system | |
| CN101854210B (en) | Cutoff wavelength measuring method and optical communication system | |
| CN104395737A (en) | System and method for identifying fiber sequence in a multi-fiber optical cable | |
| CN103591971B (en) | A kind of localization method of fiber grating | |
| CN102519707B (en) | Measuring method of longitudinal distribution of bending loss of optical fiber | |
| JP5948368B2 (en) | Optical fiber characterization method | |
| CN104121889B (en) | A kind of shaft tower inclination monitoring system based on BOTDR distributing optical fiber sensing and method | |
| CN107179175A (en) | A kind of transmission line of electricity OPGW cable broken core accurate positioning methods | |
| CN109813525B (en) | Optical cable identification device and identification method | |
| CN105444990A (en) | Dynamic correction apparatus and method for testing optical insertion loss and optical return loss | |
| CN105187121A (en) | Communication optical cable fault point surface position location method and system | |
| CN102394693A (en) | Method for accurately positioning fault points of optical cables | |
| WO2014035022A1 (en) | Fusion splicer having added optical fiber inspection function | |
| JP2016102689A (en) | Optical fiber bent shape measurement device and bent shape measurement method therefor | |
| CN102928203A (en) | Device and method for calibrating cut-off wavelength of polarization maintaining optical fiber | |
| CN108306674A (en) | A kind of localization method and positioning device of fault points of optical cables | |
| CN111049574A (en) | Method and system for quickly positioning optical cable interruption position | |
| CN104980212B (en) | Optical fiber fault detecting system and method with self-learning function | |
| CN101968562B (en) | Uninterrupted cutting and splicing method for urban pipeline communication cables by applying polarization mode dispersion modules | |
| JP6283602B2 (en) | Optical fiber bending shape measuring apparatus and bending shape measuring method thereof | |
| CN203587125U (en) | Positioning system of fiber grating | |
| CN207650940U (en) | A kind of warning band based on built-in fiber | |
| CN204286753U (en) | Far-end speech optical cable identifier | |
| CN111103067A (en) | Cable trench temperature monitoring method and system based on single-mode optical fiber |
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 |