CN105953916A - Laser power sampling method and device - Google Patents
Laser power sampling method and device Download PDFInfo
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- CN105953916A CN105953916A CN201610436263.6A CN201610436263A CN105953916A CN 105953916 A CN105953916 A CN 105953916A CN 201610436263 A CN201610436263 A CN 201610436263A CN 105953916 A CN105953916 A CN 105953916A
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- 238000005070 sampling Methods 0.000 title claims abstract description 49
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- 239000000835 fiber Substances 0.000 claims abstract description 120
- 238000001914 filtration Methods 0.000 claims description 45
- 230000003287 optical effect Effects 0.000 claims description 26
- 238000005253 cladding Methods 0.000 claims description 19
- 239000012780 transparent material Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
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- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract 2
- 239000013307 optical fiber Substances 0.000 description 17
- 238000005259 measurement Methods 0.000 description 9
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- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0214—Constructional arrangements for removing stray light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0425—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using optical fibers
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Abstract
The embodiments of the invention provide a laser power sampling method and device, for solving the technical problem of crash of a whole fiber laser system, caused by damage to fiber cores in a tapering process in the prior art of laser power sampling when a beam splitter is usually taken as a sampling device and employs a tapering mode in most cases to enable a part of signal light in original fiber cores to overflow to sampling fibers for power sampling. According to the laser power sampling method and device provided by the invention, in accordance with the Rayleigh scattering law, diffusion light escaping from transmission fibers is acquired, through obtaining power of the diffusion light, power of transmission laser in the transmission fibers, needing to be measured is accurately obtained, damage to the transmission laser is reduced to a great degree, and the technical effect of lossless laser power sampling to a quite large extent is realized.
Description
Technical field
The present invention relates to laser field, in particular to a kind of laser power method of sampling and equipment.
Background technology
In fiber laser system, it usually needs in internal system, output is carried out sampling monitoring,
To judge the working of laser instrument.
The conventional power sample detecting of optical fiber laser is typically necessary beam splitter as Sampling device.Should
The beam splitter that method uses generally uses and draws the mode of cone that the part signal light in former fiber core is overflow
Go out to sampling optical fiber, by the analysis of flashlight that sampling optical fiber is derived thus complete power samples mistake
Journey.
But, some high energy optical-fiber laser fibre cores deliver superlaser, any draws cone process equal
May result in fiber core damage, thus cause whole high energy light fiber laser system to collapse, therefore,
This traditional luminous power method of sampling using beam splitter as Sampling device is not particularly suited for laser fiber system
The power samples detection of system.
Summary of the invention
A kind of laser power method of sampling of present invention offer and equipment, it is intended to improve the problems referred to above.
A kind of laser power sample devices that the embodiment of the present invention provides, is used for gathering in Transmission Fibers biography
The power of defeated laser.Described equipment includes processor and scattered light power samples device, described scattered light
Power samples device couples with described Transmission Fibers, and described processor fills with described scattered light power samples
Put coupling.Described scattered light power samples device, for gathering the scattered light from Transmission Fibers effusion, obtains
Obtaining the power of the described scattered light gathered, wherein, described scattered light refers to be dissipated by described Transmission Fibers
Penetrate the laser of effusion.Described processor obtains described Transmission Fibers for the power according to described scattered light
The power of the laser of middle transmission.
Preferably, also including non-core light filtering device, described non-core light filtering device is for by institute
Stating in Transmission Fibers the optical signal beyond core light to filter, wherein, described core light is in described transmission
The laser of transmission in the fibre core of optical fiber.
Preferably, described non-core light filtering device includes cladding light filtering device, and described cladding light is filtered
Except device is set in described Transmission Fibers, the outfan of described cladding light filtering device and described scattering
Luminous power sampling apparatus connects, and described cladding light filtering device is used for filtering in described Transmission Fibers transmission
Core light beyond optical signal.
Preferably, described cladding light filtering device is covering power detacher.
Preferably, described non-core light filtering device also includes closed shell, and described closed shell is sheathed
Peripheral at described scattered light power samples device, described closed shell is used for filtering and incides described scattering
The ambient light of luminous power sampling apparatus, wherein, described ambient light is the light beyond described Transmission Fibers.
Preferably, described closed shell is the housing being made up of transparent materials.
Preferably, described scattered light power samples device is photoelectric sensor.
A kind of laser power method of sampling that the embodiment of the present invention provides, described method includes: gathers and passes
Lose the scattered light of fine effusion, it is thus achieved that the power of the described scattered light gathered, wherein, described scattering
Light refers to by the laser of described Transmission Fibers scattering effusion；Power according to described scattered light obtains described
The power of the laser of the transmission in Transmission Fibers.
Preferably, the step of the scattered light of described collection Transmission Fibers effusion, including:
Being filtered by optical signal beyond core light in described Transmission Fibers, wherein, described core light is
The laser of transmission in the fibre core of described Transmission Fibers；
Gather the scattered light of the fibre core effusion of described Transmission Fibers.
Preferably, the step of the power of the described scattered light that described acquisition is gathered, including: will be adopted
The described scattered light of collection is converted to the signal of telecommunication, calculates the power of described scattered light according to the described signal of telecommunication.
The laser power method of sampling of the invention described above embodiment offer and equipment, be directed to prior art
Laser power sampling time, when using beam splitter as Sampling device, use draws the mode of cone to make more
Part signal light in former fiber core spills into sampling optical fiber when carrying out power samples, draws the cone process can
Fiber core can be caused to damage the technical problem causing whole fiber laser system to collapse, and the present invention carries
The laser power method of sampling of confession and equipment, according to Rayleigh scattering, gather the scattering of Transmission Fibers effusion
Light, by transmitting laser in the Transmission Fibers of the power and then the accurately required measurement of acquisition that obtain scattered light
Power, largely decrease to transmission laser damage, reached the most lossless swash
The technique effect of luminous power sampling.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to required in embodiment
Accompanying drawing to be used is briefly described, it will be appreciated that the following drawings illustrate only some of the present invention
Embodiment, is therefore not construed as the restriction to scope, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of laser power sample devices that present pre-ferred embodiments provides；
Fig. 2 is the structural representation of a kind of laser power sample devices that present pre-ferred embodiments provides；
Fig. 3 is the flow chart of steps of a kind of laser power method of sampling that present pre-ferred embodiments provides.
Reference collects:
Laser power sample devices 100；Transmission Fibers 101；
Scattered light power samples device 102；Non-core light filtering device 104；
Cladding light filtering device 107；Ambient light filtering device 106.
Detailed description of the invention
Those skilled in the art are seeking a kind of instrument improving this problem or method the most always.
In consideration of it, the designer of the present invention is by long-term exploration and trial, and experiment repeatedly and
Effort, constantly reforms and innovates, and draws the relatively laser power method of sampling shown in this programme and equipment.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in inventive embodiments, clearly and completely retouches the technical scheme in the embodiment of the present invention
State, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.Therefore, below to
The detailed description of the embodiments of the invention provided in accompanying drawing is not intended to limit claimed invention
Scope, but be merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, this
The every other embodiment that field those of ordinary skill is obtained under not making creative work premise,
Broadly fall into the scope of protection of the invention.
Refer to Fig. 1, a kind of laser power sample devices 100 that the embodiment of the present invention provides, it is used for adopting
Transmitting the power of laser in collection Transmission Fibers 101, described laser power sample devices 100 specifically includes that
Processor (not shown) and scattered light power samples device 102, described scattered light power samples fills
Put 102 to couple with described Transmission Fibers 101, described processor and described scattered light power samples device
102 couplings.Described scattered light power samples device 102 is for gathering dissipating from Transmission Fibers 101 effusion
Penetrate light, it is thus achieved that the power of the described scattered light gathered.Described processor is for according to the institute obtained
The power stating scattered light obtains the power of the laser of transmission in described Transmission Fibers 101.
The laser power sample devices 100 that the present embodiment provides, mainly foundation Rayleigh's law of scattering is former
Reason carries out laser power sampling.So-called Rayleigh scattering, is i.e. when particle size is much smaller than incident light wave
It can be understood as less than 1/10th of wavelength, the scattered light intensity in its all directions is to differ time long
Sample, this intensity is inversely proportional to the wavelength biquadratic of incident illumination, is directly proportional to incident intensity i.e.:
I(λ)scattering∝scattering(I)incident/λ4.Based on Rayleigh's law of scattering, laser is at optical fiber
During middle transmission, the scattered light from fibre core effusion is directly proportional to incident laser light intensity, i.e. the scattered light merit of fibre core
Rate also exists linear proportional relation with transmission laser power.Dissipating of the fibre core that foundation Rayleigh scattering is reflected
The linear proportional relation existed between the power of the laser penetrating luminous power and transmission, by sampling from transmission
The power of the scattered light of effusion in the fibre core of optical fiber 101, can obtain transmission in Transmission Fibers 101 and swash
The power of light, can largely on realize the lossless power measurement of optical-fiber laser, especially high energy light
Fine laser transmits the lossless power measurement of laser.
Described scattered light power samples device 102, is arranged near Transmission Fibers 101, is used for gathering
The scattered light of effusion in Transmission Fibers 101.Described scattered light, is i.e. the light letter in Transmission Fibers 101
The light of scattering effusion number when transmitting along described Transmission Fibers 101.Transmission Fibers 101 mainly includes three
Rotating fields, is shell (or perhaps coat), covering and fibre core, and in transmission laser, transmission swashs
Light is primarily referred to as in fibre core the laser of transmission, certainly, is likely in described covering and described shell
Have a small amount of laser or pump light transmission.The described scattered light power samples device 102 of the present embodiment,
In order to improve certainty of measurement, the laser that meeting preferred acquisition scatters out in the fibre core of Transmission Fibers 101
Signal, namely scattered light.In order to reach accurate certainty of measurement, can be by non-core light
The equipment such as filtering device filter other optical signal measured in environment in addition to the laser in described fibre core.
Described scattered light power samples device 102 can be photoelectric sensor, and described scattered light power is adopted
The scattered light collected first is converted to the signal of telecommunication by sampling device 102, is obtaining according to the signal of telecommunication changed
Obtain the power samples of scattered light.Described photoelectric sensor, is to use photoelectric cell as detecting element
Sensor.First it be converted into measured change the change of optical signal, then by photo elements
Part converts optical signals into the signal of telecommunication further.Photoelectric sensor is typically by light source, optical path and light
Electric device three part forms.Electro-optical pickoff is the sensor using photoelectric device as conversion element,
It can be used for detecting the non electrical quantity directly causing light quantity to change, as light intensity, illuminance, radiation temperature measurement,
Gas composition analysis etc.；Also can be used to detect other non electrical quantities that can be converted into light quantity change, such as part
The shape of diameter, surface roughness, strain, displacement, vibration, speed, acceleration, and object,
The identification etc. of duty.Electro-optical pickoff has the feature such as noncontact, fast, the dependable performance of response.
Described scattered light power samples equipment, it is also possible to for Fibre Optical Sensor, described in gathering
The light of Transmission Fibers 101 scattering carries out qualitative, quantitative modulation, according to the parameter of the optical signal after modulation,
Draw the power of gathered raw scattered light.The basic functional principle of Fibre Optical Sensor is by from light
The optical signal in source sends into manipulator through optical fiber, makes parameter to be measured and the light entering modulator zone interacts
After, cause the optical property (such as the intensity of light, wavelength, frequency, phase place, polarization state etc.) of light to be sent out
Changing, becomes the signal source modulated, and is sending into photo-detector through optical fiber, is being demodulated, obtains
Obtain measured parameter.
Certainly, described scattered light power samples equipment, it is also possible to be other can collect described transmission
The optical signal that optical fiber 101 scatters, and obtain the Sampling device of the power of gathered laser.
Described processor couples with described scattered light power samples device 102, it is thus achieved that described scattered light merit
The scattered light power that rate sampling apparatus 102 obtains, draws described transmission light according to described scattered light power
The power of the transmission laser in fine 101.Described processor can be the monolithic firing calculation procedure in advance
Machine, it is also possible to for programmable logic controller (PLC), or other the processor that can carry out calculating.Described
The conversion formula preset in processor, can be the scattered light power and optical fiber drawn according to Rayleigh scattering
The linear direct ratio computing formula of middle transmission laser.
The laser power sample devices 100 that the present embodiment provides, according to Rayleigh's law of scattering, by scattering
Luminous power sampling apparatus 102 gathers the power of the scattered light of Transmission Fibers 101 effusion, passes through processor
Obtain the power of transmission laser according to scattered light power, can largely realize Transmission Fibers 101
The lossless power samples of middle transmission laser.
Refer to Fig. 2, the laser power sample devices 100 that the present embodiment provides, its basic structure and former
Reason and the technique effect produced are identical with previous embodiment part, for briefly describing, and the present embodiment part
Not mentioned part, refers to corresponding contents in previous embodiment.
The laser power sample devices 100 that the present embodiment provides, on the basis of above-described embodiment, described
Laser power sample devices 100 can also include non-core light filtering device 104, and described non-core light is filtered
Optical signal in addition to device 104 is used for core light filters.Wherein, beyond described core light
The transmission transmitted in optical signal can be included in Transmission Fibers 101 and beyond fibre core disturbs light and described
External interference light outside Transmission Fibers 101.Described transmission interference light transmits in being mainly included in covering
Laser and the pump light of residual, and a small amount of optical signal transmitted in the enclosure, described external interference light
Mainly incide in scattered light power samples environment outside described scattered light power samples device 102
Boundary's light.The most correspondingly, described non-core light filtering device 104 can also be according to the classification of non-core light
Being divided into two big classes, cladding light filtering device 107 and ambient light filtering device 106, to filter outside fibre core
Optical signal, improves the accuracy of scattered light power samples, improves the biography in Transmission Fibers 101 further
The power of defeated laser.
Described non-core light filtering device 104 can select described cladding light filtering device 107, is used for filtering
Except the optical signal of transmission in covering, to reduce in covering the optical signal of transmission for gathering the shadow of core light
Ring.Cladding light filtering device 107 and method have a lot, can be by increasing the light of propagation in covering
The angle of divergence, the cladding light power of the big angle of divergence is more effectively absorbed and is peeled off.Described non-core light is filtered
Except device 104 is set in the Transmission Fibers 101 of required measurement, described cladding light filtering device 107
Outfan be connected with described scattered light power samples device 102, the transmission of cladding light will have been filtered
Transmitting laser, namely core light in laser, transmission to described scattered light power samples device 102 is entered
Row scattered light power samples.
Described cladding light filtering device 107 can preferred covering power detacher, effectively by Transmission Fibers
In the covering of 101, laser and a small amount of residual pump luminous power of transmission are peeled off, and improve in Transmission Fibers 101
The purity of core light, improves laser power measurement precision further.
Described non-core light filtering device 104 can also select ambient light filtering device 106, is used for filtering
Scattered light power collecting device gathers the ambient light in environment.Described ambient light filtering device 106 is permissible
It is set in the periphery of described scattered light power samples device 102, may be incident in environment of sampling
Ambient light to described scattered light power samples device 102 filters, and described ambient light is non-described
The optical signal of transmission in Transmission Fibers 101.Described ambient light filtering device 106 can be the most airtight
Housing, described closed shell only allows the optical signal in Transmission Fibers 101 to pass through, and isolates non-described
The ambient light of Transmission Fibers 101.Described closed shell is preferably the shell being mainly made up of transparent materials
Body, or in closed shell, it is provided with the closing housing etc. of incomplete oxidation metal coating, all may be used
To realize ambient light filtering function.
Certainly, described ambient light filtering device 106 can also be set in whole Transmission Fibers 101 and dissipate
Penetrate the periphery of luminous power sampling apparatus 102, to realize more preferable laser lossless power samples effect.
The laser power sample devices 100 that the present embodiment provides, sets up non-core light filtering device 104,
To realize filtering the optical signal outside fibre core, improve scattered light power samples precision.Described laser power is adopted
Sample equipment 100 can include cladding light filtering device 107, such as covering power detacher, will transmit light
In the covering of fine 101, the laser of transmission and the pump light of a small amount of residual filter.Described non-core light filters
Device 104 can also include ambient light filtering device 106, such as closed shell etc., described closed shell
The housing that can be mainly made up of transparent materials or in set incomplete oxidation metal coating, to realize
Ambient light in the sampling environment of scattered light power samples device 102 is filtered, improves sampling further
Efficiency and accuracy.
Referring to Fig. 3, a kind of laser power method of sampling that the present embodiment provides, described method is mainly wrapped
Include:
S301: gather the scattered light of Transmission Fibers effusion.
The laser sampling method of the present embodiment, is performed by laser power sample devices.Described laser
Power samples equipment first gathers the scattered light of described Transmission Fibers effusion, namely from described Transmission Fibers
The laser scattered out.In order to obtain higher sampling precision, preferred acquisition is from the fibre core of Transmission Fibers
The laser shed.First the light outside the fibre core of described Transmission Fibers can be filtered, including filtering covering
The laser transmitted in shell and the pump light of residual, and the ambient light gathered in environment is filtered.Will
After non-core light in described Transmission Fibers filters, gather described Transmission Fibers fibre core effusion dissipate
Penetrate light.
S302: obtain the power of the described scattered light gathered.
Described laser power sample devices obtains the power of the described scattered light gathered, power acquisition side
Formula may include that and the described scattered light gathered is converted to the signal of telecommunication, further according to described signal of telecommunication meter
Calculate the power of described scattered light.
S303: obtain the power transmitting laser in described Transmission Fibers according to the power of described scattered light.
Described laser power sample devices, according to default conversion formula, by the merit of described scattered light
Rate obtains the power of the transmission laser in described Transmission Fibers.According to Rayleigh's law of scattering, institute
The Rayleigh scattering of meaning, is i.e. when particle size is much smaller than lambda1-wavelength, e.g. preferably smaller than wavelength
1/10th, the scattered light intensity in its all directions is different, the ripple of this intensity and incident illumination
Long biquadratic is inversely proportional to, and is directly proportional to incident intensity, that is:
I(λ)scattering∝scattering(I)incident/λ4.Based on Rayleigh's law of scattering, laser is at optical fiber
During middle transmission, the scattered light from fibre core effusion is directly proportional to incident laser light intensity, i.e. the scattered light merit of fibre core
Rate also exists linear proportional relation with transmission laser power.Dissipating of the fibre core that foundation Rayleigh scattering is reflected
Penetrate the linear proportional relation existed between luminous power and Transmission Fibers power, by sampling from Transmission Fibers
Fibre core in the power of scattered light of effusion, the power transmitting laser can be obtained in Transmission Fibers, can
To realize the lossless power measurement of optical-fiber laser on largely, especially high energy optical-fiber laser transmits
The lossless power measurement of laser.
The power samples method that the present embodiment provides, according to Rayleigh's law of scattering, gathers Transmission Fibers ease
The scattered light gone out, it is thus achieved that the power of described scattered light, at the line according to scattered light power with Transmission Fibers
Property proportional relation obtain Transmission Fibers transmission laser power, largely achieve Transmission Fibers
The lossless power samples of middle transmission laser especially high energy transmission laser.Being embodied as of the present embodiment
Journey can refer to aforementioned means embodiment, and this is no longer going to repeat them.
In sum, the laser power method of sampling of the invention described above embodiment offer and equipment, for
When the laser power of prior art is sampled, when using beam splitter as Sampling device, use draws cone more
Mode make the part signal light in former fiber core spill into sampling optical fiber when carrying out power samples,
Draw cone process to may result in fiber core and damage the technical problem causing whole fiber laser system to collapse,
The laser power method of sampling of present invention offer and equipment, according to Rayleigh scattering, gather Transmission Fibers ease
The scattered light gone out, by obtaining the power of scattered light and then accurately obtaining in the required Transmission Fibers measured
The power of transmission laser, largely decreases the damage to transmission laser, has reached largely
Lossless laser power sampling technique effect.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (10)
1. a laser power sample devices, it is characterised in that be used for gathering in Transmission Fibers transmission
The power of laser, described equipment includes processor and scattered light power samples device, described scattered light merit
Rate sampling apparatus couples with described Transmission Fibers, described processor and described scattered light power samples device
Coupling；
Described scattered light power samples device, for gathering the scattered light escaped from described Transmission Fibers, obtains
Obtaining the power of the described scattered light gathered, wherein, described scattered light refers to be dissipated by described Transmission Fibers
Penetrate the laser of effusion；
Described processor obtains transmission in described Transmission Fibers for the power according to described scattered light
The power of laser.
Equipment the most according to claim 1, it is characterised in that also include that non-core light filters
Device, described non-core light filtering device is for filtering the optical signal beyond core light, wherein, institute
Stating core light is the laser of transmission in the fibre core of described Transmission Fibers.
Equipment the most according to claim 2, it is characterised in that described non-core light filters dress
Putting and include cladding light filtering device, described cladding light filtering device is set in described Transmission Fibers, institute
The outfan stating cladding light filtering device is connected with described scattered light power samples device, described cladding light
Filtering device is for filtering the optical signal beyond the core light transmitted in described Transmission Fibers.
Equipment the most according to claim 3, it is characterised in that described cladding light filtering device is
Covering power detacher.
Equipment the most according to claim 4, it is characterised in that described non-core light filters dress
Putting and also include closed shell, it is peripheral that described closed shell is set in described scattered light power samples device,
Described closed shell is for filtering the ambient light inciding described scattered light power samples device, wherein,
Described ambient light is the optical signal beyond described Transmission Fibers.
Equipment the most according to claim 5, it is characterised in that described closed shell is by not
The housing that transparent material is made.
Equipment the most according to claim 1, it is characterised in that described scattered light power samples
Device is photoelectric sensor.
8. a laser power method of sampling, it is characterised in that described method includes:
Gathering the scattered light of Transmission Fibers effusion, wherein, described scattered light refers to by described Transmission Fibers
The laser of scattering effusion；
Obtain the power of the described scattered light gathered；
Power according to described scattered light obtains the power of the laser of the transmission in described Transmission Fibers.
Method the most according to claim 8, it is characterised in that described collection Transmission Fibers is escaped
The step of the scattered light gone out, including:
Being filtered by optical signal beyond core light in described Transmission Fibers, wherein, described core light is
The laser of transmission in the fibre core of described Transmission Fibers；
Gather the scattered light of the fibre core effusion of described Transmission Fibers.
Method the most according to claim 8, it is characterised in that the institute that described acquisition is gathered
State the power of scattered light, specifically include:
The described scattered light gathered is converted to the signal of telecommunication；
The power of described scattered light is calculated according to the described signal of telecommunication.
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|---|---|---|---|
| CN201610436263.6A CN105953916A (en) | 2016-06-17 | 2016-06-17 | Laser power sampling method and device |
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| CN201610436263.6A CN105953916A (en) | 2016-06-17 | 2016-06-17 | Laser power sampling method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323850A (en) * | 2018-10-29 | 2019-02-12 | 大族激光科技产业集团股份有限公司 | Optical fiber laser scatters light detection device and laser power calibration and feedback method |
| WO2019245032A1 (en) * | 2018-06-22 | 2019-12-26 | 株式会社フジクラ | Photodetection device and laser device |
| CN112923958A (en) * | 2019-12-06 | 2021-06-08 | 中兴通讯股份有限公司 | Rayleigh scattered light intensity determination method and device and storage medium |
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