CN103207012A - Automatic calibration device for optical power meter - Google Patents
Automatic calibration device for optical power meter Download PDFInfo
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- CN103207012A CN103207012A CN2013100687739A CN201310068773A CN103207012A CN 103207012 A CN103207012 A CN 103207012A CN 2013100687739 A CN2013100687739 A CN 2013100687739A CN 201310068773 A CN201310068773 A CN 201310068773A CN 103207012 A CN103207012 A CN 103207012A
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Abstract
The invention discloses an automatic calibration device for an optical power meter to be calibrated. The automatic calibration device comprises an automatic calibration unit and a central control unit. A multi-wavelength stable light source, a wavelength switching control module, an optical attenuator and a real-time online light splitting and sampling module are sequentially connected in the automatic calibration unit. The real-time online light splitting and sampling module comprises an optical splitter and a built-in optical power meter, one output of the optical splitter is connected with an output optical calibration interface which is connected with an external instrument to be calibrated, the other output of the optical splitter is connected with the built-in optical power meter, the built-in optical power meter is connected with the central control unit and capable of measuring the output optical power online in real time, and the central control unit is equipped with a communication module. According to the automatic calibration device, real-time calibration of the same light source is achieved in a real sense through the real-time online light splitting and sampling mode, external influencing factors are reduced, the optical power of the calibration interface is stable, the calibration precision is greatly improved, and the technologically revolutionary significance is provided.
Description
Technical field
The invention belongs to light calibrating indicating instrument field, be specifically related to a kind of light power meter self-checking device.
Background technology
Light power meter is that optical fiber is requisite basic test instrument in the communication test field.Light power meter calibration operation under the prior art is by comparing to realize calibration with the etalon optical power meter.
As Fig. 1, standard sources at first is connected to etalon optical power meter A by optical attenuator; On the test wavelength, adjust optical attenuator, use fiber optical power reach the calibration performance number (as-10dBm) and the test number of record etalon optical power meter this moment;
And then standard sources is connected to equipment B to be calibrated by optical attenuator;
Computing machine connects equipment to be calibrated, and the etalon optical power meter reading value that records just now is dealt into equipment to be calibrated, calibrates.
At different wave length and different capacity point, above-mentioned steps need repeat.
From above introduction, can see and have following shortcoming:
1. manually-operated, complex steps, efficient are low.
2. uncontrollable node is many, and influence factor is many.
3. this calibrating mode is not become prerequisite with the luminous power that light source is exported, and the etalon optical power meter reading that read above a moment during calibration is that benchmark is calibrated; Therefore under the prior art with reference to light source, in fact be not the same light source of real meaning.
Above factor affecting fiber optical power change is unfavorable for that calibration accurately.
The content of invention
The present invention is directed to shortcoming and problem that existing light power meter calibration exists, a kind of light power meter self-checking device is provided, eliminated that the uncontrollable node of prior art is many, the external interference factor is many, the inaccurate shortcoming of precision, but the mode by real-time online light splitting sampling realizes same light source real time calibration truly, improved degree of accuracy greatly, reduced manual intervention, effectively boosted productivity, reduced cost, satisfy the production demand that increases day by day, have revolutionary meaning.
The present invention realizes that the technical scheme of its target is:
The light power meter self-checking device is used for treating alignment light power meter instrument and calibrates, and it is characterized in that: comprise automatic alignment unit and centralized control unit, alignment unit is connected with centralized control unit automatically.
Described automatic alignment unit comprises the multi-wavelength stable light source, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module;
Described multi-wavelength stable light source, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module connect successively;
But real-time online light splitting sampling module connects centralized control unit;
Multi-wavelength stable light source, wavelength switching controls module, optical attenuator are connected with centralized control unit respectively;
The built-in communication part of described centralized control unit perhaps connects the external communication assembly.
Further, but described real-time online light splitting sampling module comprises optical branching device, built in light power meter;
One tunnel output of described optical branching device connects output optical alignment interface; The optical alignment interface connects outside instrument to be calibrated; Another road output of optical branching device connects the built in light power meter; The built in light power meter connects centralized control unit, but the luminous power of real-time online measuring output.
Better, described optical attenuator is for regulating the optical attenuator of gain automatically;
Further, described multi-wavelength stable light source comprises that the output of single-mode optics source or the output of multimode light source or both have concurrently; Corresponding respectively with it, described automatic alignment unit is the automatic alignment unit of single mode that is suitable for the output of single mode light source; Or for being suitable for the automatic alignment unit of multimode of multimode light source output; Perhaps both have concurrently.
Automatically the structure of alignment unit composition is applicable to the automatic alignment unit of single mode, the automatic alignment unit of multimode; That is, its basic structure is consistent, and according to the difference of single mode light source, multimode light source, relevant interface etc. are done accommodation.
In order further to improve the performance dirigibility of device, described wavelength switching controls module is also set up external light source access port.
The multi-wavelength stable light source that described automatic alignment unit comprises, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module are integrated tight assembly; Or be parts independently separately; During use, be connected with the centralized control unit assembly.
Centralized control unit can be microcontroller assembly or the stand-alone computer with control processing capacity, also can with the multi-wavelength stable light source, but the tight assembly that wavelength switching controls module, optical attenuator real-time online light splitting sampling module are formed is integrated.
Each assembly, the unit package of device are integrated tight assembly, and because the simple reliability that makes of structure improves, union space and cost also significantly reduce.
Module, the assembly of above-mentioned each function of realization also can be made up of autonomous device respectively, connect according to the mode described in the literary composition during use, and expansion has strengthened the dirigibility of system.
The light power meter self-checking device also comprises the Input/Output Device interface, and the input equipment interface connects input equipment, such as keyboard; The output device interface connects output device, for example display screen; Be typically the LCD touch-screen of integrated input, output function.
If no special instructions, the optical device of describing in the literary composition all is applicable to single mode, multimode dual mode.
The present invention has very outstanding outstanding effect by said structure, realizes same light source real time calibration truly, the fiber light power stabilising, thoroughly broken away from manual calibration by many drawbacks, realized the automatic calibration of light power meter; Greatly improved calibration accuracy.
Description of drawings
Fig. 1 is the light power meter calibration synoptic diagram under the prior art.
Fig. 2 realizes theory diagram for the present invention.
Fig. 3 is the signal of an embodiment of the present invention implementation.
Fig. 4 is the signal of another embodiment of the present invention implementation.
Accompanying drawing described herein is used for providing the further understanding to invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation are used for explaining the present invention, do not constitute improper restriction of the present invention.
Embodiment
Below by particular specific embodiment, implementation of the present invention is described, those skilled in the art can understand other advantage of the present invention and beneficial effect easily by the content that this instructions discloses.The present invention also can be realized and used by other different specific embodiments.Every details of the present invention also can carried out various modifications and variation based on different viewpoints and application under prerequisite of the present invention.
Being preferred embodiment of the present invention below, is not the protection domain that this patent limits.All within the spirit and principle of this patent, the modification of doing, be equal to replacement, improve, all be included within protection scope of the present invention.
Below in conjunction with accompanying drawing, further the embodiment of the invention is described and specifically describes, in order to understand meaning of the present invention more clearly.
In conjunction with the preferred embodiments, describe specific embodiments of the present invention in detail.
Embodiment 1: be example with the single mode light source, as Fig. 2.
The light power meter self-checking device is used for treating alignment light power meter instrument and calibrates, and it is characterized in that: comprise automatic alignment unit and centralized control unit, alignment unit is connected with centralized control unit automatically.
Described automatic alignment unit comprises the multi-wavelength stable light source, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module;
Described multi-wavelength stable light source, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module successively light connect;
But real-time online light splitting sampling module connects centralized control unit;
Multi-wavelength stable light source, wavelength switching controls module, optical attenuator are connected with centralized control unit respectively; Therefore can under the control of centralized control unit, carry out multi wave length illuminating source conversion, wavelength switching and light intensity decays and regulate; Optical attenuator is for regulating the optical attenuator of gain automatically; Under the steering order of centralized control unit, carry out gain transformations automatically, and then regulate the intensity of output light signal.
The built-in communication part of described centralized control unit perhaps connects the external communication assembly, with instrument to be calibrated, external smart compunication.
Centralized control unit is connected with the external smart computing machine by communication part, and the line data of going forward side by side exchanges and communicates by letter; The communication form is wired or wireless, serial ports or network interface, and then realize long-range, controlled in wireless.
But described real-time online light splitting sampling module is realized the Output optical power of same light source is monitored in real time, comprises optical branching device and built in light power meter;
One tunnel output of described optical branching device connects output optical alignment interface; The optical alignment interface connects outside instrument to be calibrated; Another road output of optical branching device connects the built in light power meter; The built in light power meter connects centralized control unit, but the luminous power of real-time online measuring output.This structure has realized same light source real time calibration truly, has improved degree of accuracy greatly;
Optical attenuator is for regulating the optical attenuator of gain automatically; Under the steering order of centralized control unit, carry out gain transformations, and then regulate the intensity of output light signal.
In the present embodiment, the light power meter self-checking device is applied to the single mode light source, is the implementation structure example under the single mode light source way of output.
Embodiment 2: in the present embodiment, the structure of light power meter self-checking device is formed substantially the same manner as Example 1; Difference is that alignment unit is the automatic alignment unit of multimode that is applicable to the output of multimode light source automatically.The structure of the automatic alignment unit of multimode and the automatic alignment unit of single mode is basic identical, and just relevant interface etc. is applicable to the output of multimode light source.
Embodiment 3: see Fig. 3.In the present embodiment, the light power meter self-checking device except having the automatic alignment unit of single mode that is applicable to the output of single mode light source, also has the automatic alignment unit of multimode that is applicable to the output of multimode light source.The structure of the automatic alignment unit of multimode and the automatic alignment unit of single mode is basic identical, just is applicable to the output of multimode light source, and corresponding component is made accommodation.
In order to improve the extended capability of equipment, in the various embodiments described above, wavelength switching controls module is also set up external light source access port, can import external light source, has strengthened the light source input capability; As Fig. 4.
Among the above embodiment, in order to realize better operation ease, the present invention also is provided with the input-output device interface, connects input equipment, output device.Input equipment, output device be integrated be arranged in the light power meter self-checking device or input equipment, output device external.
Typically, input equipment is keyboard, and output device is display screen.Preferred version is the LCD touch display screen with touch-input function under the prior art at present.
For realizing technical goal of the present invention, each ingredient of light power meter self-checking device, each component units---multi-wavelength stable light source, wavelength switch control unit, optical attenuator, optical branching device, but real-time online light splitting sampling unit, and centralized control unit, can be encapsulated in one, become the integrated instrument of a tight structure;
Also can have a style of one's own respectively, separately as autonomous device, each autonomous device connects use according to aforesaid way during use, and assembly is flexible.
The multi-wavelength stable light source comprises the output of single-mode optics source, the output of multimode light source;
Described multi-wavelength stable light source, optical attenuator, wavelength switch control unit all are applicable to single mode, multimode.Optical interface is done adaptability according to the light source situation and is regulated.
Operation instruction:
The built in light power meter at first with the external perimysium reference light power meter as standard source, carry out self calibration, then as calibration foundation and the judge of whole calibrating installation;
The multi-wavelength stable light source provides the light of the required wavelength of calibration;
Can regulate the optical attenuator of gain automatically and adjust output power, reach required calibration point;
Wavelength switching controls module is used for switching the light of respective wavelength to the corresponding port;
Centralized control unit is the control center of whole device, functions such as implementation procedure control, Communication Control.
Centralized control unit by automatic control, has been realized multi-wavelength calibration and check automatically in conjunction with automatic alignment unit, comprehensive coverage precision and the reliability of calibration.
During use, instrument to be calibrated only need use an optical fiber cable to be connected to the alignment light interface, and establishes a communications link with centralized control unit, just can finish calibration and the check of all wavelengths under the respective sources pattern (single mode, multimode).Realized that the luminous power of light power meter calibration process monitors in real time, realized a plurality of calibration point auto-calibrations of instrument gamut.
Can illustrate that from above-mentioned example the present invention has realized automatic calibration by the above technical scheme, has reached purpose of the present invention; Effectively reduce, reduced or eliminated the disturbing factor that influences calibration accuracy in the calibration process, improved reliability, the consistance of calibration; Greatly promoted production efficiency of products and quality control ability, the suitable bulk article of technical scheme is calibrated automatically, automatic gauging, and the product of calibrating, the precision height, and quality one is held back, and satisfies the quality requirements of high-precision calibration.
Though the present invention describes with reference to preferred embodiment and accompanying drawing, non-limiting yet above-mentioned explanation should be considered as illustrative, be familiar with the variation that this operator spirit according to the present invention makes and revise the protection domain that should belong to this patent.
Claims (7)
1. the light power meter self-checking device is used for treating alignment light power meter instrument and calibrates, and it is characterized in that: comprise automatic alignment unit and centralized control unit, alignment unit is connected with centralized control unit automatically.
2. according to claims 1 described light power meter self-checking device, it is characterized in that:
Described automatic alignment unit comprises the multi-wavelength stable light source, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module;
Described multi-wavelength stable light source, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module connect successively;
But real-time online light splitting sampling module connects centralized control unit;
Multi-wavelength stable light source, wavelength switching controls module, optical attenuator are connected with centralized control unit respectively;
The built-in communication part of described centralized control unit perhaps connects the external communication assembly.
3. light power meter self-checking device according to claim 2 is characterized in that:
But described real-time online light splitting sampling module is monitored the Output optical power of light source in real time, comprises optical branching device, built in light power meter;
One tunnel output of described optical branching device connects output optical alignment interface; The optical alignment interface connects outside instrument to be calibrated;
Another road output of optical branching device connects the built in light power meter; The built in light power meter connects centralized control unit, but the luminous power of real-time online measuring output.
4. according to claim 2,3 arbitrary described light power meter self-checking devices, it is characterized in that: described optical attenuator is for regulating the optical attenuator of gain automatically;
5. according to claim 1,2,3,4 arbitrary described light power meter self-checking devices, it is characterized in that: described multi-wavelength stable light source comprises that the output of single-mode optics source or the output of multimode light source or both have concurrently.
Corresponding respectively with it, described automatic alignment unit is the automatic alignment unit of single mode that is suitable for the output of single mode light source; Or for being suitable for the automatic alignment unit of multimode of multimode light source output; Perhaps both have concurrently.
6. light power meter self-checking device according to claim 2, it is characterized in that: described wavelength switching controls module is also set up external light source access port.
7. light power meter self-checking device according to claim 2, it is characterized in that: the multi-wavelength stable light source that described automatic alignment unit comprises, but wavelength switching controls module, optical attenuator real-time online light splitting sampling module are for integrated tight assembly or be parts independently separately; During use, it is connected with the centralized control unit assembly;
Centralized control unit is microcontroller assembly or the stand-alone computer with control processing capacity, or with the multi-wavelength stable light source, but the tight assembly that wavelength switching controls module, optical attenuator real-time online light splitting sampling module are formed is integrated.
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| CN201310068773.9A CN103207012B (en) | 2013-02-24 | 2013-02-24 | Automatic calibration device for optical power meter |
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| CN201310068773.9A CN103207012B (en) | 2013-02-24 | 2013-02-24 | Automatic calibration device for optical power meter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104501945A (en) * | 2015-01-17 | 2015-04-08 | 国家电网公司 | Optical power meter automatic metrological verification system and method |
| CN105790831A (en) * | 2016-04-20 | 2016-07-20 | 山东信通电子股份有限公司 | Device for automatically calibrating bidirectional transmit-receive optical power of PON network equipment |
| CN105792033A (en) * | 2016-04-20 | 2016-07-20 | 山东信通电子股份有限公司 | Method for accurately regulating and controlling business optical signal power of PON network |
| CN105933058A (en) * | 2016-04-20 | 2016-09-07 | 山东信通电子股份有限公司 | PON network device bidirectional transmitting-receiving optical power automatic calibration method |
| WO2017181916A1 (en) * | 2016-04-20 | 2017-10-26 | 山东信通电子股份有限公司 | Method for automatically calibrating bidirectional light receiving and emitting power of pon network device |
| US20190140739A1 (en) * | 2017-11-08 | 2019-05-09 | Afl Telecommunications Llc | Methods for calibrating olts and determining optical loss |
| CN113092074A (en) * | 2021-03-31 | 2021-07-09 | 武汉光迅科技股份有限公司 | Optical device aging test device and method |
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| CN102914756A (en) * | 2012-06-27 | 2013-02-06 | 中国电子科技集团公司第四十一研究所 | Automatic calibrating and compensating method of diode-type microwave power probe |
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| CN1696719A (en) * | 2004-05-14 | 2005-11-16 | 华为技术有限公司 | Automatic calibrating device and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104501945A (en) * | 2015-01-17 | 2015-04-08 | 国家电网公司 | Optical power meter automatic metrological verification system and method |
| CN105790831A (en) * | 2016-04-20 | 2016-07-20 | 山东信通电子股份有限公司 | Device for automatically calibrating bidirectional transmit-receive optical power of PON network equipment |
| CN105792033A (en) * | 2016-04-20 | 2016-07-20 | 山东信通电子股份有限公司 | Method for accurately regulating and controlling business optical signal power of PON network |
| CN105933058A (en) * | 2016-04-20 | 2016-09-07 | 山东信通电子股份有限公司 | PON network device bidirectional transmitting-receiving optical power automatic calibration method |
| WO2017181916A1 (en) * | 2016-04-20 | 2017-10-26 | 山东信通电子股份有限公司 | Method for automatically calibrating bidirectional light receiving and emitting power of pon network device |
| CN105790831B (en) * | 2016-04-20 | 2018-11-23 | 山东信通电子股份有限公司 | PON network equipment bidirectional transmit-receive optical power self-checking device |
| CN105933058B (en) * | 2016-04-20 | 2019-01-25 | 山东信通电子股份有限公司 | PON network equipment bidirectional transmit-receive optical power automatic calibrating method |
| CN105792033B (en) * | 2016-04-20 | 2019-07-12 | 山东信通电子股份有限公司 | The accuracy controlling method of PON network business optical signal power |
| US20190140739A1 (en) * | 2017-11-08 | 2019-05-09 | Afl Telecommunications Llc | Methods for calibrating olts and determining optical loss |
| US10567076B2 (en) * | 2017-11-08 | 2020-02-18 | Afl Telecommunications Llc | Methods for calibrating OLTS and determining optical loss |
| CN113092074A (en) * | 2021-03-31 | 2021-07-09 | 武汉光迅科技股份有限公司 | Optical device aging test device and method |
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