CN105141356A - Optical cable surveying instrument - Google Patents
Optical cable surveying instrument Download PDFInfo
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- CN105141356A CN105141356A CN201510217667.1A CN201510217667A CN105141356A CN 105141356 A CN105141356 A CN 105141356A CN 201510217667 A CN201510217667 A CN 201510217667A CN 105141356 A CN105141356 A CN 105141356A
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- coupler
- optical cable
- generai investigation
- display module
- investigation instrument
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- 230000003287 optical effect Effects 0.000 title claims abstract description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 238000011835 investigation Methods 0.000 claims description 22
- 230000010287 polarization Effects 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000013307 optical fiber Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000000253 optical time-domain reflectometry Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention provides an optical cable surveying instrument, belongs to the communication technology field and solves a problem that end face quality of a target fiber can not be detected in the prior art. The optical cable surveying instrument comprises a laser generation unit, a controller unit, a piezoelectric ceramic, a first coupler, a second coupler, a photoelectric detector and a display module, wherein light signals emitted by the laser generation unit are divided through the first coupler into two paths of signals which respectively pass through the controller unit and the piezoelectric ceramic to enter the second coupler for interference, and interference light outputted by the second coupler is transmitted to the display module through the photoelectric detector. Through the optical cable surveying instrument, the end face quality of the target fiber can be conveniently detected, and the optical cable surveying instrument further has advantages of long measurement distance, convenient operation and easy and simple use.
Description
Technical field
The invention belongs to communication technical field, relate to optical cable generaI investigation instrument.
Background technology
Along with the development of communication network, optical cable has become the underlying transport mode of communication network.Increasing optical cable is laid in built on stilts, the line environment such as pipeline, people's well, and how managing these underlying network resources becomes the problem that is needed badly solution.In addition, due to the sharply change of urban construction, the situations such as machine room resettlement, track remodelling, optical cable repairing continue to bring out, and how fast and effeciently to move to change, rush to repair and become line attendant problem in the urgent need to address.Conventional solution to the problems described above has: pull one by one from known place, the mode of bending optical cable is added with OTDR, the mode of quick freezing liquid is added with OTDR, the mode of radio frequency detection, optical fiber identifier is searched, red light source such as to search at the mode, although these method effects also can be said to be obvious, also there is larger defect.First, pull one by one from known place, need the expensive time to search, binding place cannot be separated, limited precision; Secondly, add the mode of bending optical cable with OTDR, damage to a certain extent can be caused to optical cable; 3rd, add the mode of quick freezing liquid with OTDR, operation easier is large, there is certain potential murder by poisoning; 4th, radio frequency detection mode, as fruit part direct burial fiber cable removes strengthening core, then cannot detect; 5th, optical fiber identifier mode, needs stripping fiber optic cables, has certain influence to line transmission, if not stripping fiber optic cables, then can only search the tail optical fiber at two ends; Finally, if use red light source, then cannot detect route, measuring distance is shorter.
Optical cable generaI investigation instrument be design for Construction of Optical Cable Line in optical communication system and maintenance specially can only instrument, be the Novel meter for optical cable construction, examination and O&M technical staff make to measure.When using optical cable generaI investigation instrument, user of service only needs to knock optical cable gently, easily can find out target optical fiber place, and the built-in happiness of instrument is with being audio and video frequency signal by knocking convert information, and in other words, we can hear or see target optical fiber place.Optical cable generaI investigation instrument can replace methods such as cutting in the past, bend, be freezing completely, and be a kind of technology not damaging optical cable completely newly, its powerful application function, can greatly reduce time and the management cost of optical cable transmission network engineering, increases work efficiency greatly.
Summary of the invention
The present invention is directed to existing technology and there are the problems referred to above, propose optical cable generaI investigation instrument, it can easily detect the end face quality of target optical fiber.
The present invention is realized by following technical proposal: optical cable generaI investigation instrument, it is characterized in that, comprise laser generating unit, controller unit, piezoelectric ceramic, the first coupler, the second coupler, photodetector and display module, described laser generating unit utilizing emitted light signal by described first coupler be split as two ways of optical signals respectively via controller unit and piezoelectric ceramic enter the second coupler and interfere, the interference light that the second coupler exports flows to display module through photo-detector.
In above-mentioned optical cable generaI investigation instrument, be provided with reference arm between described first coupler and described controller, between the first coupler and piezoelectric ceramic, be provided with pickup arm.
In above-mentioned optical cable generaI investigation instrument, described controller unit comprises polarization state for controlling light signal in reference arm and this light signal and default flashlight is carried out many gears measuring unit of mating polarization control unit and being used for promoting dynamic range.Dynamic range is an important parameter of optical cable generaI investigation instrument, and larger dynamic range measurement distance is far away, and because of restrictions such as ADC precision, amplifier noises, single gear cannot reach larger dynamic range.
In above-mentioned optical cable generaI investigation instrument, described many gears measuring unit comprises analogue selector/distributor and peripheral circuit thereof.Achieve high-precision many gear signal by using analog switch and some resistance to amplify.
In above-mentioned optical cable generaI investigation instrument, described display module is oscilloscope.Send into oscilloscope, then can demonstrate power and the change of interference light with the signal of telecommunication.
In above-mentioned optical cable generaI investigation instrument, described display module is PC.Send into PC, just directly can observe the interference dynamic process of two-beam.
Compared with prior art, the present invention has the following advantages: 1, have overlength range of dynamic measurement, is applicable to different distance test, the longest 90Km that reaches; 2, the interference of the machinery of target optical fiber/optical cable is converted to audio signal and figure display.3, the optical cable containing target optical fiber can easily be found.4, without the need to loaded down with trivial details setting, easy to operate, be simple and easy to use.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present invention.
Fig. 2 is the circuit theory diagrams of many gears measuring unit of the present invention.
Embodiment
Be below specific embodiments of the invention, and by reference to the accompanying drawings technical scheme of the present invention be further described, but the present invention is not limited to these embodiments.
As shown in Figure 1, this optical cable generaI investigation instrument comprises laser generating unit, controller unit, piezoelectric ceramic, the first coupler, the second coupler, photodetector and display module, laser generating unit utilizing emitted light signal by the first coupler be split as two ways of optical signals respectively via controller unit and piezoelectric ceramic enter the second coupler and interfere, the interference light that the second coupler exports flows to display module through photo-detector.Be provided with reference arm between first coupler and controller, between the first coupler and piezoelectric ceramic, be provided with pickup arm.It should be noted that, display module is oscilloscope or PC.
On column piezoelectric ceramic, be used for multiple fiber optic loop offsetting the change of Yin Wendu and the phase fluctuation that produces, obtain quadrature in phase bias condition.Optical fiber polarisation control unit is used for controlling the polarization state of the reference light propagated in reference arm, and the polarization state of reference light and flashlight is mated mutually.First coupler plays channel-splitting filter effect, and the second coupler plays with the effect of ripple device and reference arm signal and pickup arm signal are produced interferes.Electric explorer is for detecting from the second coupler interference light out.Finally, from photodetector interference light out, PC or oscilloscope can be sent into.If feeding oscilloscope, then can demonstrate power and the change of interference light with the signal of telecommunication, this is also the difference with traditional Mach-Zehnder interferometer, can demonstrate the interventional procedures of two-beam visually; If send into PC, the interference dynamic process of two-beam just directly can be observed.
Controller unit comprises polarization state for controlling light signal in reference arm and this light signal and the flashlight preset is carried out many gears measuring unit of mating polarization control unit and being used for promoting dynamic range.Dynamic range is an important parameter of optical cable generaI investigation instrument, and larger dynamic range measurement distance is far away, and because of restrictions such as ADC precision, amplifier noises, single gear cannot reach larger dynamic range.
Dynamic range is an important parameter of optical cable generaI investigation instrument, and larger dynamic range measurement distance is far away.Because of restrictions such as ADC precision, amplifier noises, single gear cannot reach larger dynamic range.Therefore the application adopts many gears measuring and design, and as shown in Figure 2, many gears measuring unit comprises analogue selector/distributor and peripheral circuit thereof.Achieve high-precision many gear signal by using analog switch and some resistance to amplify.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. optical cable generaI investigation instrument, it is characterized in that, comprise laser generating unit, controller unit, piezoelectric ceramic, the first coupler, the second coupler, photodetector and display module, described laser generating unit utilizing emitted light signal by described first coupler be split as two ways of optical signals respectively via controller unit and piezoelectric ceramic enter the second coupler and interfere, the interference light that the second coupler exports flows to display module through photo-detector.
2. optical cable generaI investigation instrument according to claim 1, is characterized in that, be provided with reference arm, be provided with pickup arm between the first coupler and piezoelectric ceramic between described first coupler and described controller.
3. optical cable generaI investigation instrument according to claim 2, it is characterized in that, described controller unit comprises polarization state for controlling light signal in reference arm and this light signal and the flashlight preset is carried out many gears measuring unit of mating polarization control unit and being used for promoting dynamic range.
4. optical cable generaI investigation instrument according to claim 3, it is characterized in that, described many gears measuring unit comprises analogue selector/distributor and peripheral circuit thereof.
5. the optical cable generaI investigation instrument according to claim 1-4 any one, it is characterized in that, described display module is oscilloscope.
6. the optical cable generaI investigation instrument according to claim 1-4 any one, it is characterized in that, described display module is PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217667.1A CN105141356A (en) | 2015-04-30 | 2015-04-30 | Optical cable surveying instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217667.1A CN105141356A (en) | 2015-04-30 | 2015-04-30 | Optical cable surveying instrument |
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| Publication Number | Publication Date |
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| CN105141356A true CN105141356A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510217667.1A Pending CN105141356A (en) | 2015-04-30 | 2015-04-30 | Optical cable surveying instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591693A (en) * | 2015-12-16 | 2016-05-18 | 大豪信息技术（威海）有限公司 | Integrated test system and integrated test method for fiber-optic network |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100281985A1 (en) * | 2007-05-16 | 2010-11-11 | Hitachi Cable, Ltd. | Optical fiber vibration sensor |
| CN203399113U (en) * | 2013-05-03 | 2014-01-15 | (株)韩国一诺仪器株式会社 | Optical cable general detection device with information identification function |
-
2015
- 2015-04-30 CN CN201510217667.1A patent/CN105141356A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100281985A1 (en) * | 2007-05-16 | 2010-11-11 | Hitachi Cable, Ltd. | Optical fiber vibration sensor |
| CN203399113U (en) * | 2013-05-03 | 2014-01-15 | (株)韩国一诺仪器株式会社 | Optical cable general detection device with information identification function |
Non-Patent Citations (1)
| Title |
|---|
| 张森: ""光纤马赫曾德尔干涉仪系统的理论与应用分析"", 《光电技术应用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591693A (en) * | 2015-12-16 | 2016-05-18 | 大豪信息技术（威海）有限公司 | Integrated test system and integrated test method for fiber-optic network |
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Application publication date: 20151209 |
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