CN108761632A - A kind of fiber grating inscription path multiplexing device - Google Patents
A kind of fiber grating inscription path multiplexing device Download PDFInfo
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- CN108761632A CN108761632A CN201810932140.0A CN201810932140A CN108761632A CN 108761632 A CN108761632 A CN 108761632A CN 201810932140 A CN201810932140 A CN 201810932140A CN 108761632 A CN108761632 A CN 108761632A
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- fiber
- optic
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- mask plate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a kind of fiber gratings to inscribe path multiplexing device, including apparatus main body, apparatus main body includes light source, the preliminary design of light source rectifies the incidence end to beam expanding lens, the light of light source transmitting at this time is by amplifying hot spot after beam expanding lens, apparatus main body further includes speculum group, first diaphragm, first cylindrical mirror, first mask plate, first structure of fiber_optic, collimating mirror, second diaphragm, second cylindrical mirror, second mask plate, second structure of fiber_optic, the light that invention can will not pass through the first diaphragm by the setting of speculum group collects carry out secondary use, avoid the light energy waste of conventional grating inscription technology, to improve the inscription efficiency of fiber grating.
Description
Technical field
The present invention relates to field fibers, and path multiplexing device is inscribed more particularly, to a kind of fiber grating.
Background technology
Fiber grating be it is a kind of by certain method make fiber core refractive index occur axial cyclic modulation by formed
Diffraction grating, be a kind of passive filtering device.Due to grating fibers have small, splice loss, splice attenuation is small, be compatible with optical fiber entirely,
The advantages that intellectual material can be embedded to, and its resonance wavelength is to the variation ratio of the external environments such as temperature, strain, refractive index, concentration
It is more sensitive, therefore be widely used in fiber optic communication and sensory field.
Fiber grating is the light sensitivity using fiber optic materials, and incident light is concerned with field pattern by the method for ultraviolet photoetching
Fibre core is written, the refractive index periodic generated in fibre core along fibre core axial direction changes, to form the phase light in permanent space
Grid, effect are substantially that (transmission or reflection) filter or speculum of a narrowband are formed in fibre core.When a beamwidth light
When composing light by fiber grating, reflection will be generated by meeting the wavelength of fiber grating Bragg condition, remaining wavelength penetrates optical fiber
Grating continues to transmit, and it is in single-path architecture that existing grating fibers inscribe light path more, is integrally susceptible to the case where light energy wastes.
Invention content
The present invention is to overcome the above situation insufficient, it is desirable to provide a kind of technical solution that can be solved the above problems.
A kind of fiber grating inscription path multiplexing device, including apparatus main body, apparatus main body include light source, the preliminary design of light source
Rectify the incidence end to beam expanding lens, by amplifying hot spot after beam expanding lens, apparatus main body further includes the light of light source transmitting at this time
Speculum group, the first diaphragm, the first cylindrical mirror, the first mask plate, the first structure of fiber_optic, collimating mirror, the second diaphragm, the second cylindrical mirror,
Second mask plate, the second structure of fiber_optic are respectively provided with optical fiber on first structure of fiber_optic, the second structure of fiber_optic, and wherein optical fiber is in
Stretch shape.
As a further solution of the present invention：The speculum group is arranged at intervals on the forward position of beam expanding lens, speculum
The forward position of group is disposed with collimating mirror, the second diaphragm, the second cylindrical mirror, the second mask plate；The center of the speculum group
Equipped with for light source by through-hole.
As a further solution of the present invention：The light of the light source transmitting is divided into center light by the light path after beam expanding lens
Road and edge light path, central optical path pass through the through-hole of speculum group, and pass sequentially through the first diaphragm, the first cylindrical mirror, the first mask
It being acted on the optical fiber of the first structure of fiber_optic after version, edge light path reflexes to collimating mirror by the reflecting optics in speculum group,
Then it is acted on the optical fiber of the second structure of fiber_optic after passing sequentially through the second diaphragm, the second cylindrical mirror, the second mask plate.
As a further solution of the present invention：First structure of fiber_optic and the second structure of fiber_optic are equipped with for clamping light
Fine clip.
As a further solution of the present invention：First diaphragm is identical as the structure size of the second diaphragm.
As a further solution of the present invention：First cylindrical mirror is identical as the structure size of the second cylindrical mirror.
As a further solution of the present invention：First mask plate is identical as the structure size of the second mask plate.
Beneficial effects of the present invention：Invention can will not pass through the first diaphragm by the setting of speculum group
Light collect carry out secondary use, avoid conventional grating inscription technology light energy waste, to improve fiber grating
Inscription efficiency.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is schematic structural view of the invention；
In figure：1- light sources, the first mask plates of 11-, the second mask plates of 12-, 2- beam expanding lens, 3- speculum groups, the first light of 4-
Door screen, the first cylindrical mirrors of 5-, 6- collimating mirrors, the second diaphragms of 7-, the second cylindrical mirrors of 8-, 9- optical fiber, the first structure of fiber_optic of 91-, the second light of 92-
Fine holder.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of fiber grating inscription path multiplexing device, including apparatus main body, dress
It includes light source 1 to set main body, and the preliminary design of light source 1 rectifies the incidence end to beam expanding lens 2, and the light that light source 1 emits at this time is by expanding
Hot spot is amplified after mirror 2, apparatus main body further includes speculum group 3, the first diaphragm 4, the first cylindrical mirror 5, the first mask plate 11, first
Structure of fiber_optic 91, collimating mirror 6, the second diaphragm 7, the second cylindrical mirror 8, the second mask plate 12, the second structure of fiber_optic 92, first light
Optical fiber 9 is respectively provided on fine holder 91, the second structure of fiber_optic 92, wherein optical fiber 9 is in stretch shape.
The speculum group 3 is arranged at intervals on the forward position of beam expanding lens 2, and the forward position of speculum group 3 is set gradually
There are collimating mirror 6, the second diaphragm 7, the second cylindrical mirror 8, the second mask plate 12；The center of the speculum group 3 is equipped with to be passed through for light source 1
Through-hole, the light source 1 emit light central optical path and edge light path, central optical path are divided by the light path after beam expanding lens 2
Across the through-hole of speculum group 3, and the first light is acted on after passing sequentially through the first diaphragm 4, the first cylindrical mirror 5, the first mask plate 11
On the optical fiber 9 of fine holder 91, edge light path reflexes to collimating mirror 6 by the reflecting optics 32 in speculum group 3, then leads to successively
It is acted on the optical fiber 9 of the second structure of fiber_optic 92 after crossing the second diaphragm 7, the second cylindrical mirror 8, the second mask plate 12.
The light that light source 1 emits in the present invention is located at the center of hot spot middle section by amplifying hot spot after beam expanding lens 2
Light path can be directly through the through-hole of speculum group 3, and then central optical path carries out shaping by the first diaphragm 4 to hot spot, formation
Focal line the spreading out by the first mask plate 11 that hot spot is formed by 5 longitudinal compression of the first cylindrical mirror at a focal line, central optical path again
It penetrates on the optical fiber 8 for acting on the first structure of fiber_optic 91 to realize the purpose for inscribing grating；The light that light source 1 emits is by expanding
Hot spot after mirror 2 is bigger, and the part light path (i.e. edge light path) positioned at edge can be radiated at reflecting optics 32 and reflect, and passes through
Reflective edges light path can be reflected onto on collimating mirror 6, and the light path after collimating mirror 6 is passing sequentially through the second diaphragm 7 to hot spot
Shaping is carried out, the hot spot of formation is compressed into a focal line by the second cylindrical mirror 8 again, and the focal line that edge light path is formed is covered by second
The diffraction of film version 12 realizes the purpose for inscribing grating on the optical fiber 9 of the second structure of fiber_optic 92.The present invention passes through speculum
The light that the setting of group 3 can will not pass through the first diaphragm 7 collects carry out secondary use, avoids conventional grating and inscribes skill
The light energy of art wastes, to improve the inscription efficiency of fiber grating.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (7)
1. a kind of fiber grating inscribes path multiplexing device, which is characterized in that including apparatus main body, apparatus main body includes light source,
The preliminary design of light source rectifies the incidence end to beam expanding lens, and the light of light source transmitting at this time is by amplifying hot spot after beam expanding lens, device
Main body further include speculum group, the first diaphragm, the first cylindrical mirror, the first mask plate, the first structure of fiber_optic, collimating mirror, the second diaphragm,
Second cylindrical mirror, the second mask plate, the second structure of fiber_optic are respectively provided with optical fiber on first structure of fiber_optic, the second structure of fiber_optic,
Middle optical fiber is in stretch shape.
2. fiber grating according to claim 1 inscribes path multiplexing device, which is characterized in that the speculum group interval
Forward position in beam expanding lens is set, the forward position of speculum group be disposed with collimating mirror, the second diaphragm, the second cylindrical mirror,
Second mask plate；The center of the speculum group be equipped with for light source by through-hole.
3. fiber grating according to claim 1 inscribes path multiplexing device, which is characterized in that the light of the light source transmitting
Line is divided into central optical path and edge light path by the light path after beam expanding lens, and central optical path passes through the through-hole of speculum group, and successively
By being acted on the optical fiber of the first structure of fiber_optic after the first diaphragm, the first cylindrical mirror, the first mask plate, edge light path passes through reflection
Reflecting optics in microscope group reflex to collimating mirror, are acted on after then passing sequentially through the second diaphragm, the second cylindrical mirror, the second mask plate
On the optical fiber of second structure of fiber_optic.
4. fiber grating according to claim 1 inscribes path multiplexing device, which is characterized in that first structure of fiber_optic
It is equipped with the clip for clamping optical fiber with the second structure of fiber_optic.
5. fiber grating according to claim 1 inscribes path multiplexing device, which is characterized in that first diaphragm and the
The structure size of two diaphragms is identical.
6. fiber grating according to claim 1 inscribes path multiplexing device, which is characterized in that first cylindrical mirror and the
The structure size of two cylindrical mirrors is identical.
7. fiber grating according to claim 1 inscribes path multiplexing device, which is characterized in that first mask plate with
The structure size of second mask plate is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810932140.0A CN108761632A (en) | 2018-08-16 | 2018-08-16 | A kind of fiber grating inscription path multiplexing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810932140.0A CN108761632A (en) | 2018-08-16 | 2018-08-16 | A kind of fiber grating inscription path multiplexing device |
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| CN108761632A true CN108761632A (en) | 2018-11-06 |
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| CN201810932140.0A Pending CN108761632A (en) | 2018-08-16 | 2018-08-16 | A kind of fiber grating inscription path multiplexing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866866A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Fiber grating writing device and fiber grating writing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338794A (en) * | 2016-10-31 | 2017-01-18 | 山东圣海光纤科技有限公司 | Optical fiber grating etching optical path multiplexing device |
-
2018
- 2018-08-16 CN CN201810932140.0A patent/CN108761632A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338794A (en) * | 2016-10-31 | 2017-01-18 | 山东圣海光纤科技有限公司 | Optical fiber grating etching optical path multiplexing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866866A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Fiber grating writing device and fiber grating writing method |
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Application publication date: 20181106 |