CN107561647A - A kind of orthogonal optoisolator of tail optical fiber - Google Patents
A kind of orthogonal optoisolator of tail optical fiber Download PDFInfo
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- CN107561647A CN107561647A CN201711030179.5A CN201711030179A CN107561647A CN 107561647 A CN107561647 A CN 107561647A CN 201711030179 A CN201711030179 A CN 201711030179A CN 107561647 A CN107561647 A CN 107561647A
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- polarization
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- optical fiber
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- optoisolator
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Abstract
The invention discloses a kind of orthogonal optoisolator of tail optical fiber, following elements are included successively in the light path incident along positive light：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 one group of Faraday rotator and 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 polarization beam apparatus comprising multiple cemented surfaces is realized the separation of light beam and converged inside the optoisolator, and its input is mutually perpendicular to output collimater, can realize that beam orthogonal optical axis inputs, along optical axis direction horizontal output.
Description
Technical field
The present invention relates to high power laser light device field, more particularly to a kind of orthogonal optoisolator of tail optical fiber.
Background technology
Optoisolator can be divided into polarization relationship type isolator and polarization independent type isolator according to its physical principle
Two major classes.Wherein polarization relationship type isolator be also known as faraday isolator, by input polarization element, Faraday rotator and
Polarizer this three parts composition is exported, wherein input and the polarization state angle of output polarizer are 45 °, this kind of isolator leads to
It is usually used in free space optical system, because often to keep the polarization state of light source in such an optical system.And in optical fiber
In this kind of non-polarization-maintaining system of optics, the polarization direction of light beam is rambling, and now fixed polarization angle can cause system
In loss.Polarization independent type isolator is mainly made up of birefringece crystal, Faraday rotator and wave plate or optical rotation plate,
This kind of isolator is generally used in fiber laser system, and it can effectively maintain the frequency stability of optical system, this kind of at present
Optical fiber laser has a wide range of applications in field of industrial processing.
Compared with conventional isolators, the polarization beam splitting of multiple cemented surfaces is included inside the orthogonal optoisolator of the tail optical fiber
Device is realized the separation of light beam and converged, and its input is mutually perpendicular to output collimater, can realize beam orthogonal light
Axle inputs, along optical axis direction horizontal output.
The content of the invention
It is an object of the invention to the separation by the polarization beam splitting Implement of Function Module light beam inside isolator and converge,
So that the beam orthogonal optical axis input in optoisolator, along optical axis direction horizontal output.
To achieve the above object, the present invention provides a kind of orthogonal optoisolator of tail optical fiber, the light incident along positive light
Lu Shang, it is arranged in order following elements：
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, formed by 3 analyzing crystal gluings, incident light is divided into two-beam outgoing；
Polarization form converter, it is made up of the wave plate of Faraday rotator and λ/2 or quartzy optical rotation plate, by the polarization of two bunch polarisations
Direction is rotated；
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：Input end fiber collimater is mutually perpendicular to output end optical fiber collimator, can realize beam orthogonal light
Axle inputs, along optical axis direction horizontal output.
Described polarization beam apparatus a and polarization beam apparatus b forms by 3 analyzing crystal gluings, and the of polarization beam apparatus a
One cemented surface and the second cemented surface are in same optical axis respectively at polarization beam apparatus b the first cemented surface and the second cemented surface.
Described polarization form converter is made up of the wave plate of one group of Faraday rotator and λ/2 or quartzy optical rotation plate, can
The positive linearly polarized light polarization direction passed through is turned clockwise pi/2, back through linearly polarized light polarization direction keep constant.
Because the present invention proposes the orthogonal optoisolator of tail optical fiber, polarization is added on the basis of conventional separators
Beam splitting function module, realize that beam orthogonal optical axis inputs, along optical axis direction horizontal output.
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, Faraday rotator
3rd, the wave plate of λ/2 or quartzy optical rotation plate 4, polarization beam apparatus b5, output optical fibre collimater 6.
Fig. 2 is the positive transmission light path schematic diagram of optoisolator of the present invention, and the light that input optical fibre collimater 1 is emitted is by polarization
It is divided into the orthogonal linearly polarized light P light of two beam polarization states and S light, wherein S-polarization light at beam splitter a2 the first cemented surface
Reflected with 45 °, P polarization light then directly transmits, and exit direction and S-polarization light are in 90 °, by polarization beam apparatus a2 the second glue
With 45 ° of reflections behind conjunction face, S-polarization light is retrodeviated polarization state and rotated by the wave plate of Faraday rotator 3 and λ/2 or quartzy optical rotation plate 4
90 °, by directly being transmitted at polarization beam apparatus b5 the first cemented surface.P polarization light passes through the wave plate of Faraday rotator 3 and λ/2
It is anti-by 45 ° occur at polarization beam apparatus b5 two cemented surfaces or quartzy optical rotation plate 4 retrodeviates polarization state and is equally rotated by 90 °
Penetrate, last two beams polarised light synthesizes light beam, is coupled and exported by output optical fibre collimater 6.
Fig. 3 is optoisolator reverse transfer light path schematic diagram of the present invention, and reverse transfer light enters by output optical fibre collimater 6
Enter polarization beam apparatus b5, P polarization light directly transmits at the first cemented surface, S-polarization light be then reflected onto at the second cemented surface after
It is continuous with 45 ° of reflections, subsequent two beams polarised light respectively by the wave plate of Faraday rotator 3 and λ/2 or quartzy optical rotation plate 4 after, partially
Polarization state does not change, and S-polarization light is then straight with 45 ° of reflections, P polarization light respectively by polarization beam apparatus a2 two cemented surfaces
Connect along horizontal direction and transmit, two-beam is emitted by synthesizing light beam after polarization beam apparatus a2 along horizontal direction, therefore
There is no light to enter input optical fibre collimater 1, so as to play the segregate effect of backlight.
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 6, which is replaced by, expands microscope group 7, and free space type structure does not have then
Input and output optical fibre collimater.
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 orthogonal optoisolator of tail optical fiber, along in the light path of positive light incidence, it is arranged in order following elements：A pair of light
Fine collimater, one tail optical fiber are light beam input, and another tail optical fiber is beam-outlet end；Polarization beam apparatus a, by 3 analyzing crystals
Gluing is formed, and incident light is divided into two-beam outgoing；Polarization form converter, by the wave plate of Faraday rotator and λ/2 or quartz
Optical rotation plate is formed, and the polarization direction of two bunch polarisations is rotated；Polarization beam apparatus b, formed by 3 analyzing crystal gluings,
Light beam beam splitting is two bunch polarised lights or two bunch are polarized into combiner into light beam；It is characterized in that：Input end fiber
Collimater is mutually perpendicular to output end optical fiber collimator, can realize that beam orthogonal optical axis inputs, defeated along optical axis direction level
Go out.
2. the orthogonal optoisolator of tail optical fiber as claimed in claim 1, it is characterised in that：Described polarization beam apparatus a with
Polarization beam apparatus b forms by 3 analyzing crystal gluings, polarization beam apparatus a the first cemented surface and the second cemented surface respectively at
Polarization beam apparatus b the first cemented surface and the second cemented surface is in same optical axis.
3. the orthogonal optoisolator of tail optical fiber as claimed in claim 1, it is characterised in that：Described polarization form converter by
The wave plate of one group of Faraday rotator and λ/2 or quartzy optical rotation plate composition, can make the positive linearly polarized light polarization direction passed through
Turn clockwise pi/2, back through linearly polarized light polarization direction keep it is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711030179.5A CN107561647A (en) | 2017-10-30 | 2017-10-30 | A kind of orthogonal optoisolator of tail optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711030179.5A CN107561647A (en) | 2017-10-30 | 2017-10-30 | A kind of orthogonal optoisolator of tail optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107561647A true CN107561647A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711030179.5A Pending CN107561647A (en) | 2017-10-30 | 2017-10-30 | A kind of orthogonal optoisolator of tail optical fiber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856787A (en) * | 2019-04-30 | 2020-10-30 | 福州高意光学有限公司 | Coaxial aplanatic free space circulator |
| CN113009720A (en) * | 2021-04-19 | 2021-06-22 | 深圳市麓邦技术有限公司 | Optical isolator |
| CN113794518A (en) * | 2021-09-14 | 2021-12-14 | 中铁信安(北京)信息安全技术有限公司 | Optical communication channel one-way transmission module and implementation method |
Citations (5)
| 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 |
| CN103852825A (en) * | 2014-03-04 | 2014-06-11 | 青岛海泰光电技术有限公司 | Optical isolator |
-
2017
- 2017-10-30 CN CN201711030179.5A patent/CN107561647A/en active Pending
Patent Citations (5)
| 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 |
| CN103852825A (en) * | 2014-03-04 | 2014-06-11 | 青岛海泰光电技术有限公司 | Optical isolator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856787A (en) * | 2019-04-30 | 2020-10-30 | 福州高意光学有限公司 | Coaxial aplanatic free space circulator |
| CN113009720A (en) * | 2021-04-19 | 2021-06-22 | 深圳市麓邦技术有限公司 | Optical isolator |
| CN113794518A (en) * | 2021-09-14 | 2021-12-14 | 中铁信安(北京)信息安全技术有限公司 | Optical communication channel one-way transmission module and implementation method |
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