CN107340570A - A kind of multikilowatt optoisolator - Google Patents
A kind of multikilowatt optoisolator Download PDFInfo
- Publication number
- CN107340570A CN107340570A CN201710690786.8A CN201710690786A CN107340570A CN 107340570 A CN107340570 A CN 107340570A CN 201710690786 A CN201710690786 A CN 201710690786A CN 107340570 A CN107340570 A CN 107340570A
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- Prior art keywords
- polarization
- beam apparatus
- light
- multikilowatt
- optoisolator
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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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a kind of multikilowatt optoisolator, includes following elements successively along positive light incident light axis：Input end fiber collimater, polarization beam apparatus a, polarization form converter, polarization beam apparatus b, output end optical fiber collimator.Wherein, polarization form converter is made up of the wave plate of two groups of Faraday rotators and two panels λ/2 or quartzy optical rotation plate, and the positive linearly polarized light polarization direction transmitted can be made to turn clockwise pi/2, and the linearly polarized light polarization direction of reverse transfer is constant.Compared with conventional isolators, the functional module of the polarization beam apparatus with multiple cemented surfaces is included in the optoisolator, power can be divided into after two beams in the laser of multikilowatt and carry out polarization converted respectively again, can be used cooperatively with power for the laser of multikilowatt.
Description
Technical field
The present invention relates to high power laser light device field, more particularly to a kind of multikilowatt optoisolator.
Background technology
Optoisolator be it is a kind of only allow light to transmit in one direction, and the light that buffer action is played to the light of return is passive
Device.Its operation principle is the nonreciprocity based on Faraday rotation, and its effect is that the direction of light is limited, and makes light can only
One direction is transmitted, and can be isolated well by optoisolator by the light of optical fiber echo reflection, improves light wave transmissions efficiency.
The graceful kilowatt level optical fiber laser of plum is widely applied to Metal Cutting processing and manufacturing field.High-power semiconductor laser
As the medical finishing tool of current latest generation.In the industry such as automobile and shipbuilding, high-power fiber compact-sized, easy to use
Laser has huge market potential.
In high power laser system, optoisolator can effectively eliminate coupling and the autoexcitation effect certainly between system, effectively
Power output, pattern, the stability of frequency of laser are improved, is extremely important in high quality optical system and optical communication system
One of passive device.Compared with conventional isolators, the polarization beam apparatus energy with multiple cemented surfaces is included in the optoisolator
Enough multikilowatt power light is divided into two beams carries out polarization converted again, can be used cooperatively with multikilowatt power laser.
The content of the invention
It is an object of the invention to by adding polarization beam apparatus and two groups of methods with multiple cemented surfaces in isolator
Draw the wave plate of circulator and two panels λ/2 or quartzy optical rotation plate module so that the optoisolator can be with multikilowatt power laser
It is used cooperatively.
To achieve the above object, the present invention provides a kind of multikilowatt optoisolator, on the longitudinal axis of the optoisolator,
The following elements being arranged in order：
A pair of optical fiber collimators, one tail optical fiber are light beam input, and another tail optical fiber is beam-outlet end；
Polarization beam apparatus a, is formed by 4 analyzing crystal gluings, and incident light is divided into two beams；
Polarization form converter, it is made up of the wave plate of two groups of Faraday rotators and two panels λ/2 or quartzy optical rotation plate, two bunch are inclined
The polarization direction of light is rotated respectively；
Polarization beam apparatus b, formed by 3 analyzing crystal gluings, be two bunch polarised lights or two bunch are inclined by light beam beam splitting
Combiner shake into light beam；
It is characterized in that：Multikilowatt power incident light is divided into two beams by polarization beam apparatus a, carries out polarization state rotation respectively, can
It is used cooperatively with multikilowatt power laser.
Described polarization beam apparatus a is formed by 4 analyzing crystal gluings, polarization beam apparatus b it is glued by 3 analyzing crystals and
Into polarization beam apparatus a first cemented surface is in same optical axis with polarization beam apparatus b first cemented surface, polarization point
Beam device a second cemented surface is in same optical axis with polarization beam apparatus b second cemented surface.
Described polarization form converter is made up of the wave plate of two groups of Faraday rotators and two panels λ/2 or quartzy optical rotation plate,
The linearly polarized light polarization direction of the positive transmission of two beams can be made to turn clockwise respectively pi/2, the linearly polarized light of two beam reversals transmission
Polarization direction is constant.
Brief description of the drawings
Fig. 1 is the structural representation of optoisolator of the present invention；
Fig. 2 is the positive transmission light path schematic diagram of optoisolator of the present invention；
Fig. 3 is optoisolator reverse transfer light path schematic diagram of the present invention；
Fig. 4 is the structural representation of output type optoisolator of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described further.
As shown in figure 1, optoisolator of the present invention includes input optical fibre collimater 1, polarization beam apparatus a2, first group of faraday
The wave plate of 3, second groups of circulator Faraday rotator 4, first λ/the 2 either wave plate of quartzy 5, second λ of optical rotation plate/2 or stone
English optical rotation plate 6, polarization beam apparatus b7, output optical fibre collimater 8.
Fig. 2 is that the positive transmission light path of optoisolator of the present invention and polarization state change schematic diagram, input optical fibre collimater 1 go out
The light penetrated at the cemented surface among polarization beam apparatus a2 by being divided into the two orthogonal linearly polarized lights of beam polarization state, wherein hanging down
Straight polarised light is reflected with 45 degree of angles, and with horizontal polarization light into an angle of 90 degrees, the orthogonal polarized light reflected travels to exit direction
Reflected again with 45 degree of angles when at the cemented surface of top, exit direction is horizontal direction, and horizontal polarization light is along incident light direction
Continue to propagate.Subsequent orthogonal polarized light passes through by the wave plate of first group of Faraday rotator 3 and first λ/2 or quartzy optical rotation plate
After the polarization form converter of 5 compositions, light polarization direction rotates clockwise pi/2 and becomes horizontal polarization light, and horizontal polarization light leads to
After crossing the polarization form converter being made up of the wave plate of second group of Faraday rotator 4 and second λ/2 or quartzy optical rotation plate 6, light
Polarization direction rotates clockwise pi/2 and becomes orthogonal polarized light, orthogonal polarized light now below polarization beam apparatus b7 that
Individual cemented surface sentences 45 degree of angles and is reflected and upwardly propagated the first cemented surface for reaching polarization beam apparatus b7, horizontal polarization light and hangs down
Straight polarised light after polarization beam apparatus b7 the first cemented surface by conjunction beam into after light beam, coupled through output optical fibre collimater 8
Output.
Reverse transfer light enters polarization beam apparatus b7 by output optical fibre collimater 8（Fig. 3）, it is divided into a branch of horizontal polarization
With the linearly polarized light of a branch of vertical polarization, horizontal polarization light enter by the wave plate of first group of Faraday rotator 3 and first λ/2 or
The polarization form converter that person's quartz optical rotation plate 5 forms, orthogonal polarized light are reflected into by second group by polarization beam apparatus b7's
The polarization form converter that the wave plate of Faraday rotator 4 and second λ/2 or quartzy optical rotation plate 6 form, due to the wave plate of λ/2 or
The heterogeneite of quartzy optical rotation plate, this two-beam is respectively by the wave plate of λ/2 or quartzy optical rotation plate rear polarizer direction towards rotation counterclockwise
Turn 45 °, then turned clockwise again 45 ° by the Faraday rotator rear polarizer direction of nonreciprocity, therefore this two-beam
Polarization direction, which is compared, not to be changed initially, and now horizontal polarization light is not changed by direction of propagation during polarization beam apparatus a 2
Become, orthogonal polarized light by during polarization beam apparatus a 2 by two cemented surface elder generation back reflections so that the direction of propagation relatively first before to
One segment distance of lower translation, this last two-beam is absorbed by the shell of special blackening process, therefore almost no light enters
Enter input optical fibre collimater 1.
Optoisolator of the present invention is that it can also be the arbitrary forms such as output type, free space type in line style.Figure
4 illustrate that output type structure, and wherein output optical fibre collimater 8, which is replaced by, expands microscope group 9, and free space type structure both ends are then
There is no optical fiber collimator.
More than be only to the explanation of the embodiment of the present invention, rather than the restriction to protection domain, any unsubstantiality
Change, such as change the combination of polarization beam apparatus and polarization form converter, should all fall the claim guarantor in patent of the present invention
Within the scope of shield.
Claims (3)
1. a kind of multikilowatt optoisolator, on the longitudinal axis of the optoisolator, the following elements that are arranged in order：
A pair of optical fiber collimators, one tail optical fiber are light beam input, and another tail optical fiber is beam-outlet end；
Polarization beam apparatus a, is formed by 4 analyzing crystal gluings, and incident light is divided into two beams；
Polarization form converter, it is made up of the wave plate of two groups of Faraday rotators and two panels λ/2 or quartzy optical rotation plate, two bunch are inclined
The polarization direction of light is rotated respectively；
Polarization beam apparatus b, formed by 3 analyzing crystal gluings, be two bunch polarised lights or two bunch are inclined by light beam beam splitting
Combiner shake into light beam；
It is characterized in that：Multikilowatt power incident light is divided into two beams by polarization beam apparatus a, is carried out polarization state rotation respectively, is made it
It can be used cooperatively with power for the laser of multikilowatt.
2. multikilowatt optoisolator as claimed in claim 1, it is characterised in that：Described polarization beam apparatus a is brilliant by 4 light splitting
Body gluing is formed, and polarization beam apparatus b is formed by 3 analyzing crystal gluings, polarization beam apparatus a first cemented surface and polarization point
Beam device b first cemented surface is in same optical axis, and the of polarization beam apparatus a second cemented surface and polarization beam apparatus b
Two cemented surfaces are in same optical axis.
3. multikilowatt optoisolator as claimed in claim 1, it is characterised in that：Described polarization form converter is by two groups of farads
The wave plate of circulator and two panels λ/2 or quartzy optical rotation plate composition, the linearly polarized light polarization direction of the positive transmission of two beams can be made
Turn clockwise pi/2 respectively, and the linearly polarized light polarization direction of two beam reversals transmission is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690786.8A CN107340570A (en) | 2017-08-14 | 2017-08-14 | A kind of multikilowatt optoisolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690786.8A CN107340570A (en) | 2017-08-14 | 2017-08-14 | A kind of multikilowatt optoisolator |
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| Publication Number | Publication Date |
|---|---|
| CN107340570A true CN107340570A (en) | 2017-11-10 |
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ID=60217887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710690786.8A Pending CN107340570A (en) | 2017-08-14 | 2017-08-14 | A kind of multikilowatt optoisolator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030007713A1 (en) * | 2001-07-04 | 2003-01-09 | Dy Ja Jn | Optical isolator and method for making same |
| CN103487888A (en) * | 2013-09-25 | 2014-01-01 | 深圳市创鑫激光技术有限公司 | Kilowatt-class online isolator |
| CN103499890A (en) * | 2013-09-23 | 2014-01-08 | 深圳市创鑫激光技术有限公司 | Kilowatt-class collimation type isolator |
| CN103605184A (en) * | 2013-10-17 | 2014-02-26 | 深圳市创鑫激光技术有限公司 | Kilowatt-level high-isolation online optical isolator |
-
2017
- 2017-08-14 CN CN201710690786.8A patent/CN107340570A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030007713A1 (en) * | 2001-07-04 | 2003-01-09 | Dy Ja Jn | Optical isolator and method for making same |
| CN103499890A (en) * | 2013-09-23 | 2014-01-08 | 深圳市创鑫激光技术有限公司 | Kilowatt-class collimation type isolator |
| CN103487888A (en) * | 2013-09-25 | 2014-01-01 | 深圳市创鑫激光技术有限公司 | Kilowatt-class online isolator |
| CN103605184A (en) * | 2013-10-17 | 2014-02-26 | 深圳市创鑫激光技术有限公司 | Kilowatt-level high-isolation online optical isolator |
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Application publication date: 20171110 |
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