CN102752047A - Fault detecting method and system of optical device - Google Patents
Fault detecting method and system of optical device Download PDFInfo
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- CN102752047A CN102752047A CN2012102618033A CN201210261803A CN102752047A CN 102752047 A CN102752047 A CN 102752047A CN 2012102618033 A CN2012102618033 A CN 2012102618033A CN 201210261803 A CN201210261803 A CN 201210261803A CN 102752047 A CN102752047 A CN 102752047A
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Abstract
The invention discloses a fault detecting method and a system of an optical device. The optical device comprises a casing which is provided with a light receiving/sending connector, and a lens and a ceramic ferrule are packaged in the casing. The detecting method includes the following steps that firstly, a single mode fiber is connected between the optical device and an optical power device, a power supply is switched on, an optical power value is tested after light emitted by the optical device passes the single mode fiber, and the optical power value is recorded as a first optical power value; secondly, a multimode optical fiber is connected between the optical device and the optical power device, the power supply is switched on, all optical power values are tested after light emitted by the optical device passes the single mode fiber, and the optical power value is recorded as a second optical power value; and thirdly, fault causes of the optical device are judged by comparing the first optical power value with the second optical power value. According to the fault detecting method, faults of unqualified optical devices can be accurately and rapidly detected, the optical device can not be damaged during detecting, states of the optical device can be kept for further analysis, and the service life of the optical device is prolonged.
Description
Technical field
The present invention relates to the optical communication field, relate in particular to a kind of fault detection method and system of optical device.
Background technology
Optical device mainly is used for photosignal is changed accordingly, and change is regulated in the transmission of the light signal after the conversion, thereby the transmission of light signal is undertaken in the hope of accomplishing the end in view by prior setting requirement.With reference to figure 1, the optical device of prior art comprises the housing 100 with light emitting source 102, in housing 100, is packaged with lens 103, ceramic insertion core 104; Housing 100 is electrically connected with external power source, and housing 100 mainly is that the light or the signal of telecommunication are changed and received and dispatched, that is, after the energized, make light emitting source 102 luminous; The main effect of lens 103 is that the light that light emitting source 102 sends is converged, so that change is regulated in the transmission of light signal; The main effect of ceramic insertion core 104 is that the light signal that passes optical device is coupled to the inside of optical fibre that is connected with optical device, connects thereby make the light signal and the external world carry out the low-loss biography, perhaps carries out low-loss transmission between the photodiode with the light of outside and optical receiving end.
As everyone knows; Before optical device comes into operation; Need detect said optical device and confirm whether it is qualified; Thereby each optical device that puts goods on the market all can normally be used, and when the part optical device was found defective can not normally the use in testing process, production firm needed this defective optical device is detected to confirm the failure cause place of defective optical device.In the prior art, unspecial system to this defective optical device fault detect, to the detection of defective optical device the time, the staff directly breaks its housing 100 or take apart into two with one's hands, to detect the failure cause that defective optical device exists.But this detection method not only break into two with one's hands or unpack procedure in damage easily other device in the housing 100, and will receive the accuracy of the testing result of defective optical device fault the staff subjective factors such as work qualification and cognitive ability influence and be difficult to guarantee.Therefore be necessary to provide a kind of fault detection method and system of improved optical device, to overcome above-mentioned defective.
Summary of the invention
The fault detection method and the system that the purpose of this invention is to provide a kind of optical device; This detection method and system can accurately detect the fault of underproof optical device; And in testing process, can not damage said optical device, prolonged the useful life of optical device.
For realizing above-mentioned purpose, the present invention provides a kind of fault detection method of optical device, and said optical device comprises the housing with light emitting source; In housing, be packaged with lens, ceramic insertion core; Wherein, said detection method comprises the steps: that (1) connects monomode fiber, energized between optical device and luminous power device; It is luminous through the optical power value behind the monomode fiber to test said optical device, and is recorded as first optical power value; (2) between optical device and luminous power device, connect multimode fiber, energized, it is luminous through the optical power value behind the multimode fiber to test said optical device, and is recorded as second optical power value; (3), judge the failure cause of said optical device through the magnitude relationship of contrast first optical power value and said second optical power value.
Preferably, when the ratio of said second optical power value and first performance number more than or equal to 120% the time, the failure cause of then judging said optical device is the change of optical alignment; When the ratio of said second optical power value and first performance number is 100%-120%, judge that then the failure cause of said optical device is blocked foreign material for optical device inside has.
Preferably; Said step (1) specifically comprises: monomode fiber one end is connected in the end that said optical device is equipped with ceramic insertion core; The said monomode fiber other end is connected in the luminous power device; Connect light emitting source, said luminous power device test light is passed through the optical power value behind the monomode fiber, and will be recorded as first optical power value through the optical power value of said monomode fiber.
Preferably, said step (1) is specially: said luminous power device is repeatedly tested through the optical power value behind the said monomode fiber, will average through a plurality of optical power values of said monomode fiber, and said mean value is recorded as first optical power value.
Preferably; Said step (2) specifically comprises: multimode fiber one end is connected in the end that said optical device is equipped with ceramic insertion core; The said multimode fiber other end is connected in the luminous power device; Said luminous power device test light is passed through the optical power value behind the multimode fiber, and will be recorded as second optical power value through the optical power value of said multimode fiber.
Preferably, said step (2) is specially: said luminous power device is repeatedly tested through the optical power value behind the said multimode fiber, will average through a plurality of optical power values of said multimode fiber, and said mean value is recorded as second optical power value.
Preferably, also comprise step before in said step (1): the test light wavelength that said luminous power device is set according to the characteristic of said optical device.
Correspondingly, the present invention also provides a kind of fault detection system of optical device, and said optical device comprises the housing with light emitting source; In housing, be packaged with lens, ceramic insertion core; Wherein, said detection system comprises power supply, luminous power device, monomode fiber, multimode fiber and evaluation board, and said power supply is electrically connected with said evaluation board and luminous power device respectively; Said optical device is installed on the said evaluation board; And said evaluation board is electrically connected with the light emitting source of said optical device, so that said light emitting source electrified light emitting, the end that said optical device has ceramic insertion core is connected with said luminous power device through monomode fiber or multimode fiber.
Preferably; The fault detection system of said optical device also comprises analytical equipment; Said analytical equipment is electrically connected with said luminous power device; Said luminous power device will be tested said second optical power value and said first optical power value that obtain and import said analytical equipment, and said analytical equipment contrasts said second optical power value and said first optical power value, and judge the failure cause of said optical device according to said comparing result.
Beneficial effect of the present invention:The fault detection method of optical device of the present invention and system; Through said luminous power device respectively the test light device be connected the optical power value behind monomode fiber and the multimode fiber; And be recorded as first optical power value and second optical power value respectively; Contrast the magnitude relationship of second optical power value and first optical power value again, can detect the failure cause of judging said optical device according to comparing result; Thereby, in the process fault detection of said optical device, need the housing of said optical device not broken into two with one's hands or take apart, avoided damaging the internal components of said optical device, prolonged the useful life of optical device; In fault detection method of the present invention, be the failure cause of confirming said luminous power device through the magnitude relationship that contrasts second optical power value and first optical power value, avoided the influence of artificial subjective factor to testing result, improved the accuracy rate of testing result.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings:
Fig. 1 is the structural representation of the optical device of prior art.
Fig. 2 is the structured flowchart of the detection system of optical device fault of the present invention.
Fig. 3 is connected with the structured flowchart of analytical equipment for the detection system of optical device fault of the present invention.
Fig. 4 is the flow chart of the detection method of optical device fault of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Optical device of the present invention comprises the housing with light emitting source, in housing, is packaged with lens, ceramic insertion core; Wherein, the concrete structure of said optical device is formed and operation principle, all is well known to those skilled in the art, and is not described in detail at this.
Please refer to Fig. 2, the fault detection system of optical device of the present invention comprises power supply 110, luminous power device 120, evaluation board 130, monomode fiber 140 and multimode fiber 150; Said power supply 110 is electrically connected with said luminous power device 120 and evaluation board 130 respectively, is said luminous power device 120 and evaluation board 130 power supplies, but so that said luminous power device 120 and evaluation board 130 operate as normal; Said optical device 100 is installed on the said evaluation board 130, and is electrically connected with said evaluation board 130, thereby said evaluation board 130 and be that said optical device 100 is supplied power in order to fixing said optical device 100; In an embodiment of the present invention, said evaluation board 130 is electrically connected with the light emitting source of said optical device 100, for said light emitting source power supply, makes said light emitting source electrified light emitting; Said monomode fiber 140 and multimode fiber 150 all are connected with an end and the luminous power device 120 that said optical device 100 has a ceramic insertion core, thereby said luminous power device 120 test light are through the optical power value behind said optical device 100 and monomode fiber 140 or the multimode fiber 150.In preferred implementation of the present invention, said monomode fiber 140 and multimode fiber 150 are to be connected in said luminous power device 120 and evaluation board 130 with one the mode of selecting; That is, when needing test light to pass through the optical power value of monomode fiber, just connect said monomode fiber 140, when needing test light to pass through the luminous power of multimode fiber, just connect said multimode fiber 150; In addition; In the practical application of the fault detection system of optical device of the present invention; For convenient test, can be connected with optical device of the present invention through other device, this device connects said monomode fiber 140 and multimode fiber 150 simultaneously; And said monomode fiber 140 is connected a said luminous power device 120 respectively with multimode fiber 150; The light that light emitting source is sent passes through said monomode fiber 140 and multimode fiber 150 simultaneously with being equal to, and so just test light improves testing efficiency through the luminous power behind the two-way optical fiber simultaneously.
Please combine again with reference to figure 3; As a preferred implementation of the present invention; The fault detection system of said optical device also comprises analytical equipment 160; Said analytical equipment 160 is electrically connected with said luminous power device 120 and power supply 110; Said luminous power device 120 inputs to said analytical equipment 160 with the luminous power numerical value that its test obtains, thereby 160 pairs of luminous power numerical value that obtained of said analytical equipment are made a concrete analysis of processing, thereby draws the failure cause of said optical device 100 through the analyzing and processing to luminous power numerical value.In addition; For cooperating said analytical equipment 160; Test job person it is connected with a display (figure does not show), thereby said display can directly show the result who obtains after said analytical equipment 160 analyzing and processing, so that can directly obtain the failure cause of optical device 100.
The testing process that the fault detection system of optical device of the present invention is concrete is: according to the propagation characteristic of said optical device 100, the test light wavelength of said luminous power device 120 is set, so that said luminous power device 120 can be tested luminous power exactly; Then; Said monomode fiber 140 is connected between optical device 100 and the luminous power device 120; Connect said power supply 110; The said optical device 100 of said luminous power device 120 tests connects the luminous power behind the monomode fiber 140, and is recorded as first optical power value, and said luminous power device 120 is imported said analytical equipment 160 with said first optical power value simultaneously; Thereafter; Dismantle said monomode fiber 140; Said multimode fiber 150 is connected between optical device 100 and the luminous power device 120, connects said power supply 110, the said optical device 100 of said luminous power device 120 tests connects the luminous power behind the multimode fiber 150; And being recorded as second optical power value, said luminous power device 120 is imported said analytical equipment 160 with said second optical power value simultaneously; Be the concrete failure cause of the said optical device 100 of decidable through said second optical power value of said analytical equipment 160 analyzing and processing and second optical power value at last, and the failure cause that obtains shown through said display.Thereby; When utilizing the fault detection system of optical device of the present invention that said optical device 100 is carried out fault detect, need said optical device 100 not broken into two with one's hands or take apart, avoid damaging said optical device 100; Prolonged the useful life of optical device 100; And confirm the failure cause of said luminous power device 100 through the ratio that contrasts second optical power value and first optical power value, and avoided the influence of artificial subjective factor to testing result, improved the accuracy rate of testing result.
In the preferred embodiment of the fault detection system of optical device of the present invention; Said monomode fiber 140 has identical length with multimode fiber 150; Thereby guarantee the optical power value after light is through said monomode fiber 140 and multimode fiber 150; Except the influence that receives monomode fiber and multimode fiber self character, not influenced by other external factor, guaranteed to confirm the accuracy of said optical device 100 failure causes through the result who contrasts second performance number and first performance number.
Please again with reference to figure 4, describe the detailed process of the fault detection method of optical device of the present invention, the detection method of optical device fault of the present invention comprises the steps:
Step S101 is provided with the test light wavelength of said luminous power device according to the characteristic of said optical device; In this step; The test light wavelength that said luminous power device is set is corresponding with the characteristic of said optical device; So that said luminous power device in the test of subsequent step, can be tested through the optical power value behind the said optical device exactly, guaranteed precision of test result.
Step S102 connects monomode fiber between optical device and luminous power device, energized, and it is luminous through the optical power value behind the monomode fiber to test said optical device, and is recorded as first optical power value.In this step, test the luminous power after said optical device connects monomode fiber through external luminous power device; Particularly; Monomode fiber one end is connected in the end that said optical device is equipped with ceramic insertion core, the said monomode fiber other end is connected in luminous power device, energized; After light that light emitting source sends passes said optical device and monomode fiber; Utilize said luminous power device repeatedly test light and with averaging after a plurality of optical power value additions that obtained, and this mean value is recorded as first optical power value through the luminous power behind the monomode fiber; So repeatedly average after the test; Can guarantee that first optical power value that is obtained is the more accurate performance number after light passes through optical device and monomode fiber; Reduced the influence of extraneous factor, reduced the generation of error, improved the precision of test luminous power device test light power.
Step S103 connects multimode fiber between optical device and luminous power device, energized, and it is luminous through the optical power value behind the multimode fiber to test said optical device, and is recorded as second optical power value.In this step, test the luminous power after said optical device connects multimode fiber through external luminous power device; Particularly, the monomode fiber of testing after the completion is disassembled from said optical device, multimode fiber one end is connected in the end that said optical device is equipped with ceramic insertion core, the said multimode fiber other end is connected in luminous power device, energized; After light that light emitting source sends passes said optical device and multimode fiber; Utilize said luminous power device repeatedly test light through the optical power value behind the multimode fiber; And with averaging after a plurality of optical power value additions that obtained, and this mean value is recorded as second optical power value; So repeatedly test, identical with test through the luminous power of monomode fiber, can improve the precision of test, guarantee the accuracy rate of second optical power value.
Step S104 through contrasting the magnitude relationship of first optical power value and said second optical power value, judges the failure cause of said optical device.In this step; When said second optical power value of contrast and first optical power value; When the ratio of said second optical power value and first performance number more than or equal to 120% the time; Then the failure cause of said optical device is the change (such as moving of lens, ceramic insertion core move the displacement of laser) of optical alignment; When the ratio of second optical power value and first performance number is 100%-120%; Then the failure cause of said optical device is blocked foreign material for optical device inside has; Thereby confirmed the failure cause of this optical device through fault detection method of the present invention; Make in the subsequent repair process, can proceed to repair operation targetedly, accelerated the process of repair operation said optical device.In addition; In this step; Said luminous power device also can be connected with analytical equipment; Said luminous power device will be tested the optical power value that is obtained and send analytical equipment to, thereby can directly analyze the failure cause that the ratio relation that contrasts between said second performance number and first performance number is judged said optical device through this analytical equipment, can further accelerate the detection procedure of sun adjuster spare fault.
In an embodiment of the present invention; The light that light emitting source sends will produce different luminous powers through behind monomode fiber and the multimode fiber; Two kinds of different optical power values are compared and draw the failure cause of said optical device, utilized the monomode fiber transport properties different to light, wherein with multimode fiber; The transport properties that the concrete structure principle of said monomode fiber and multimode fiber reaches light all is well known to those skilled in the art, and is not described in detail at this.
In addition; The fault detection method of optical device of the present invention, whether also can be used to detect optical device qualified, but; Before detection, need test known good light device; Thereby through the parameter of test good light device, confirm the etalon optical power value of the expection of monomode fiber and multimode fiber, the optical power value and the etalon optical power value that in concrete test process, obtain through contrast test confirm whether optical device is qualified.In the test of each batch, all should remeasure the etalon optical power of monomode fiber and multimode fiber expection.
In sum, utilize the detection method and the system of optical device fault of the present invention, in the testing process of said optical device fault, need said optical device not broken into two with one's hands or take apart, thereby avoided damaging said optical device, prolonged the useful life of optical device; And be the failure cause of confirming said luminous power device through the ratio that contrasts second optical power value and first optical power value, avoided the influence of artificial subjective factor to testing result, improved the accuracy rate of testing result.
Disclosed arbitrary characteristic in this specification (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
Claims (10)
1. the fault detection method of an optical device, said optical device comprises the housing with light emitting source, in housing, is packaged with lens, ceramic insertion core, it is characterized in that, said detection method comprises the steps:
Between optical device and luminous power device, connect monomode fiber, energized, it is luminous through the optical power value behind the monomode fiber to test said optical device, and is recorded as first optical power value;
Between optical device and luminous power device, connect multimode fiber, energized, it is luminous through the optical power value behind the multimode fiber to test said optical device, and is recorded as second optical power value;
Through contrasting the magnitude relationship of first optical power value and said second optical power value, judge the failure cause of said optical device.
2. the fault detection method of optical device as claimed in claim 1 is characterized in that, when the ratio of said second optical power value and first performance number more than or equal to 120% the time, the failure cause of then judging said optical device is the change of optical alignment; When the ratio of said second optical power value and first performance number is 100%-120%, judge that then the failure cause of said optical device is blocked foreign material for optical device inside has.
3. the fault detection method of optical device as claimed in claim 1; It is characterized in that; Said step (1) specifically comprises: monomode fiber one end is connected in the end that said optical device is equipped with ceramic insertion core, the said monomode fiber other end is connected in luminous power device, energized; Said luminous power device test light is passed through the optical power value behind the monomode fiber, and will be recorded as first optical power value through the optical power value of said monomode fiber.
4. the fault detection method of optical device as claimed in claim 3; It is characterized in that; Said step (1) is specially: said luminous power device is repeatedly tested through the optical power value behind the said monomode fiber; To average through a plurality of optical power values of said monomode fiber, and said mean value will be recorded as first optical power value.
5. the fault detection method of optical device as claimed in claim 1; It is characterized in that; Said step (2) specifically comprises: multimode fiber one end is connected in the end that said optical device is equipped with ceramic insertion core; The said multimode fiber other end is connected in the luminous power device, and said luminous power device test light is passed through the optical power value behind the multimode fiber, and will be recorded as second optical power value through the optical power value of said multimode fiber.
6. the fault detection method of optical device as claimed in claim 5; It is characterized in that; Said step (2) is specially: said luminous power device is repeatedly tested through the optical power value behind the said multimode fiber; To average through a plurality of optical power values of said multimode fiber, and said mean value will be recorded as second optical power value.
7. like the fault detection method of claim 3 or 5 described optical devices, it is characterized in that, also comprise step before in said step (1):
The test light wavelength of said luminous power device is set according to the characteristic of said optical device.
8. the fault detection system of an optical device; Said optical device comprises the housing with light emitting source, in housing, is packaged with lens, ceramic insertion core, it is characterized in that; Said detection system comprises power supply, luminous power device, monomode fiber, multimode fiber and evaluation board; Said power supply is electrically connected with said evaluation board and luminous power device respectively, and said optical device is installed on the said evaluation board, and said evaluation board is electrically connected with the light emitting source of said optical device; So that said light emitting source electrified light emitting, the end that said optical device has ceramic insertion core is connected with said luminous power device through monomode fiber or multimode fiber.
9. the fault detection system of optical device as claimed in claim 8 is characterized in that, said luminous power device test light after through optical device and monomode fiber optical power value and be recorded as first optical power value; Said luminous power device test light after through optical device and multimode fiber optical power value and be recorded as second optical power value.
10. the fault detection system of optical device as claimed in claim 9; It is characterized in that; Also comprise analytical equipment, said analytical equipment is electrically connected with said luminous power device, and said luminous power device will be tested said second optical power value and said first optical power value that obtain and import said analytical equipment; And said analytical equipment contrasts said second optical power value and said first optical power value, and judges the failure cause of said optical device according to said comparing result.
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| CN201210261803.3A CN102752047B (en) | 2012-07-27 | 2012-07-27 | Fault detecting method and system of optical device |
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| CN101854210A (en) * | 2009-03-30 | 2010-10-06 | 住友电气工业株式会社 | Cutoff wavelength measuring method and optical communication system |
| US20110235972A1 (en) * | 2010-03-25 | 2011-09-29 | Ruggiero Anthony J | Separating and combining single-mode and multimode optical beams |
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| CN101013919A (en) * | 2007-01-23 | 2007-08-08 | 中兴通讯股份有限公司 | Method for detecting and locating light-emitting fault of Ethernet passive optical network terminal |
| CN101753207A (en) * | 2008-12-16 | 2010-06-23 | 华为技术有限公司 | Fiber link fault recognition method, device and system |
| CN101854210A (en) * | 2009-03-30 | 2010-10-06 | 住友电气工业株式会社 | Cutoff wavelength measuring method and optical communication system |
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