CN209657023U - A kind of superminiature optical circulator - Google Patents
A kind of superminiature optical circulator Download PDFInfo
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- CN209657023U CN209657023U CN201920439478.2U CN201920439478U CN209657023U CN 209657023 U CN209657023 U CN 209657023U CN 201920439478 U CN201920439478 U CN 201920439478U CN 209657023 U CN209657023 U CN 209657023U
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Abstract
The utility model provides a kind of superminiature optical circulator, the first optical fiber, the second optical fiber, third optical fiber, the first polarization splitting prism, the first wave plate, the first magneto-optical crystal, the second polarization splitting prism；First optical fiber, the second optical fiber, third optical fiber are arranged in collimator.The light beam coupling that first optical fiber issues is into the second optical fiber；The light beam coupling that second optical fiber issues is into third optical fiber；Superminiature optical circulator unilateral side fiber.
Description
Technical field
The utility model relates to a kind of ring of light rows of technical field of optical fiber communication more particularly to technical field of optical fiber communication
Device.
Background technique
Optical circulator is a kind of nonreciprocity optical device of multiport input and output, its effect is to make optical signal can only
It is transmitted along defined port order.Its typical structure has N (N is more than or equal to 3) a port, as shown in Figure 1, when light is by port 1
When input, light is exported by port 2, and when light is inputted by port 2, light is exported by port 3, and so on.
Due to this sequential delivery characteristic of optical circulator, the important devices in two-way communication are become, it can be used for
The optical signal of transmission positive in same root optical fiber and reverse transfer is separated.Fig. 2 is optical circulator for single fiber bi-directional communication
Example.At this point, port 1 connects data transmitter, port 2 connects external network, 3 connection signal receiver of port.Data can be by
Transmitter is sent to external network by port 2 by the port 1 of optical circulator, and the signal that outside is come enters optical circulator by port 2,
But not it reaches port 1 and reaches 3 entering signal receiver of port.
Optical circulator can be used for single fiber bi-directional in optic communication and communicate, fiber bragg grating (FBG) combined application (such as Fig. 3
It is shown), erbium-doped fiber amplifier (EDFA), wavelength-division multiplex (WDM), dispersion compensation, optical signal upload/download can also be in optics
Coupler is made in time-domain reflectomer (OTDR) and optical fibre gyro (Sagnac interferometer), improves the performance of system well.
It in data center and 5G application, needs in the limited small space in a space, places even two rings
Row device, the transceiving integrated module that component density doubles, in such an application, the size of circulator is at most critical
It is required that.Unilateral side, which goes out optical fiber, can substantially reduce the requirement to fiber optic disc around space in the small space of module.
In existing circulator scheme, a kind of typical unilateral fiber circulator, by the way of collimator array, still
The cost of collimator array is just much higher than one three fine collimator, while optical path is also more complex more than conventional fiber, base
Originally it cannot achieve micromation.
The utility model provides a kind of superminiature optical circulator, using the variation to polarization splitting prism, realizes superminiature
Optical circulator has many advantages, such as that structure is simple, volume is extra small, insertion loss is low, Polarization Dependent Loss is low, unilateral optical fiber out.
Utility model content
It is a kind of that the purpose of this utility model is to provide a kind of optical circulators in light communication system.
The utility model provides a kind of superminiature optical circulator, including the first optical fiber 11, the second optical fiber 12, third optical fiber
13, the first polarization splitting prism 31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32；First will be come from
The light beam coupling of optical fiber 11 is into the second optical fiber 12, by the light beam coupling from the second optical fiber 12 into third optical fiber 13.First optical fiber
11, the second optical fiber 12, third optical fiber 13 are combined into first collimator 21, optical circulator unilateral side fiber.
First collimator 21 will come from the first optical fiber 11 and the second light in superminiature optical circulator provided by the utility model
The light of fibre 12 is collimated into collimated light beam, and collimated light beam is imported the second optical fiber 12 and third optical fiber 13 respectively.Second polarization
Light splitting surface 322 is vertical with the 5th fully reflecting surface 323.
First polarization splitting prism 31, the second polarization splitting prism 32 are used to the input light of free position resolving into two beams
The vertical polarized component in two beam polarization directions is synthesized a light beam by the vertical polarized component in polarization direction.First wave plate
41, the first magneto-optical crystal 51 is used to change the polarization state of light beam.
Using the division light functions of polarization splitting prism, reflecting mirror and refracting prisms effect are formed, optical path is folded,
Go out optical fiber in the same side, keeps device space size minimum.
After light from the first optical fiber 11 is collimated into collimated light beam by first collimator 21, successively pass through the first polarization spectro
Prism 31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32, by after the first polarization splitting prism 31
Two optical fiber 12 receive.Light from the second optical fiber 12 by first collimator standard 31 directly at collimated light beam after, successively by first partially
Shake Amici prism 31, the second polarization splitting prism 41, the first magneto-optical crystal 51, the first wave plate 41, then through the first polarization spectro rib
Mirror 31, light beam are received by third optical fiber 13.
Since polarization splitting prism, to the light of a branch of random polarization state, can be decomposed on sufficiently small fore-and-aft distance
The mutually perpendicular polarised light of two beams, and generate arbitrary size is laterally separated distance；Conversely, can also two beams are orthogonal
Polarization photosynthesis light beam.This addresses the problem the long cross distance of three fine collimators and the longer collimator hot spots of distance more
Big contradiction, to realize circulator function of the fine collimator of small light spot three on small cross distance.
It can be same to realize single fiber collimator and double-fiber collimator in unilateral function with external reflecting mirror or refracting prisms
Energy.
In existing scheme, carrys out division light using the displacement piece of birefringece crystal, solved using hot expanded core fiber
Compress hot spot, solve that cross distance is longer and the bigger contradiction of hot spot, and hot expanded core fiber be certainly have than conventional fiber it is higher
Cost.
It is actually realizing in product, realize commercialization and use of this sort size: polarization splitting prism uses 0.6mm
Thickness, lens are about 0.22mm using spot diameter size, and the fine collimator cross distance of double-fiber/tri- is about 4~7mm, then finally
The length of circulator can be within 18mm, and outer diameter can control within 3.5mm.When as unilateral light extraction mode, collimator
It folds, overall length can control in 12mm, and lateral dimensions can control in 4.0mm.
The utility model provides a kind of superminiature optical circulator, using the variation to polarization splitting prism, realizes superminiature
Optical circulator has many advantages, such as that structure is simple, volume is extra small, insertion loss is low, Polarization Dependent Loss is low, unilateral optical fiber out.
Detailed description of the invention
Fig. 1 optical circulator schematic diagram.
Fig. 2 optical circulator is used for single fiber bi-directional communication scheme.
Fig. 3 optical circulator is combined for fiber bragg grating (FBG).
One optical circulator light path principle schematic diagram of Fig. 4 the utility model embodiment.
Fig. 5 the utility model light is from the first optical fiber of circulator to the light path principle schematic diagram of the second optical fiber.
Fig. 6 the utility model light is from the second optical fiber of circulator to the light path principle schematic diagram of third optical fiber.
Wave plate and magneto-optical crystal change light polarization schematic diagram in Fig. 7 the utility model optical circulator.
Two optical circulator light path principle schematic diagram of Fig. 8 the utility model embodiment.
Three optical circulator light path principle schematic diagram of Fig. 9 the utility model embodiment.
Four optical circulator light path principle schematic diagram of Figure 10 the utility model embodiment.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside" " front end ", " after
The orientation or positional relationship of the instructions such as end ", " both ends ", " one end ", " other end " is that orientation based on the figure or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition,
Term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " being equipped with ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment one, the superminiature optical circulator of the utility model, including first collimator 21, the first polarization splitting prism
31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32.First polarization splitting prism 31 includes first
Fully reflecting surface 311, the first polarization light-dividing surface 312, the second fully reflecting surface 313 and third fully reflecting surface 314.Second polarization spectro rib
Mirror 32 includes the 4th fully reflecting surface 321, the second polarization light-dividing surface 322 and the 5th fully reflecting surface 323.
Please refer to the schematic diagram that Fig. 4,5,6,7 are one optical circulator light path principles of the embodiments of the present invention.
Wherein, first collimator 21 is three optical fiber collimators, will be collimated from the light of the first optical fiber 11 and the second optical fiber 12
At collimated light beam；Collimated light beam is imported into the second optical fiber 12 and third optical fiber 13；First polarization splitting prism 31, second polarization point
Light prism 32 is used to resolving into the input light of free position into the vertical polarized component in two beam polarization directions or polarizes two beams
The vertical polarized component in direction synthesizes a light beam.First wave plate 41, the first magneto-optical crystal 51 are used to change the polarization state of light beam.
Please refer to Fig. 5,7, be respectively in the utility model light from the light of first the 11 to the second optical fiber of optical fiber 12 of circulator
Wave plate and magneto-optical crystal change light polarization schematic diagram in road schematic illustration and optical circulator.First collimator 21 will come from
The light of first optical fiber 11 is collimated into collimated light beam 211, and what collimated light beam 211 was incident on the first polarization splitting prism 31 first is all-trans
It after penetrating face 311, is reflected on the first polarization light-dividing surface 312, collimated light beam 211 is divided after the first polarization light-dividing surface 312
At with the two-beam for being mutually perpendicular to polarization state, i.e. normal light 211o and unusual light 211e.The polarization direction of light beam 211o is along y-axis
Direction, the polarization direction of light beam 211e is along the x-axis direction.Light beam 211o reaches first wave after the reflection of the first polarization light-dividing surface 312
Piece 41；Light beam 211o is after the first wave plate 41, and polarization direction has rotated 45 ° counterclockwise, and light beam 211o is using the first magneto-optic crystalline substance
After body 51, polarization direction has rotated 45 ° counterclockwise again, and the polarization state of light beam is identical with the polarization state of light beam 211e, light beam mark
For 211o ', along the x-axis direction, the x/y plane sectional view below Fig. 7 denotes the variation of light beam 211o polarization state for polarization direction.Light
Beam 211e reaches the second fully reflecting surface 313 after the transmission of the first polarization light-dividing surface 312, arrives after the reflection of the second fully reflecting surface 313
Up to the first wave plate 41；Light beam 211e is after the first wave plate 41, and polarization direction has rotated 45 ° counterclockwise, and light beam 211e is using
After one magneto-optical crystal 51, polarization direction has rotated 45 ° counterclockwise again, and the polarization state of light beam is identical with the polarization state of light beam 211o,
Light beam is denoted as 211e ', and along the y-axis direction, the x/y plane sectional view below Fig. 7 denotes light beam 211e polarization state for polarization direction
Variation.It is anti-by the 4th fully reflecting surface 321 of the second polarization splitting prism 32 after the second polarization splitting prism of 211o ' arrival 32
The second polarization light-dividing surface 322 is reached after penetrating, light beam 211e ' also reaches the second polarization light-dividing surface of the second polarization splitting prism 32
322.Two-beam is synthesized a branch of synthesis light beam 212 ' by the second polarization light-dividing surface 322 of the second polarization splitting prism 32, synthesizes light
Beam 212 ' reaches the third of the first polarization splitting prism 31 after the reflection of the 5th fully reflecting surface 323 of the second polarization splitting prism 32
Fully reflecting surface 314 reaches the second fully reflecting surface 313 of the first polarization splitting prism 31, warp after the reflection of third fully reflecting surface 314
Output is received by the second optical fiber 12 of first collimator 21 after the reflection of second fully reflecting surface 313.
It can be seen from the figure that the first fully reflecting surface 311 directly affects reflection and the refractive direction of light beam 211, thus directly
Connect the first optical fiber 11 of influence first collimator 21 and the angle design that the second optical fiber 12 is corresponding.Being exactly conversely speaking, can be with
It is designed by the inclination angle of the first fully reflecting surface 311, the first optical fiber 11 and the second optical fiber 12 for matching first collimator 21 are corresponding
Angle.
Please refer to Fig. 6,7, be respectively in the utility model light from the second optical fiber 12 of circulator to the light of third optical fiber 13
Wave plate and magneto-optical crystal change light polarization schematic diagram in road schematic illustration and optical circulator.First collimator 21 will come from
The light of second optical fiber 12 is collimated into collimated light beam 212, and what collimated light beam 212 was incident on the first polarization splitting prism 31 second is all-trans
After penetrating face 313, it is reflected on the third fully reflecting surface 314 of the first polarization splitting prism 31, collimated light beam 212 is all-trans by third
Face 314 is penetrated to be reflected on the 5th fully reflecting surface 323 of the second polarization splitting prism 32.Collimated light beam 212 is by the 5th fully reflecting surface
On the second polarization light-dividing surface 322 for reaching the second polarization splitting prism 32 after 323 reflections, collimated light beam 212 is by the second polarization
It is divided into after light splitting surface 322 with the two-beam for being mutually perpendicular to polarization state, i.e. normal light 212o and unusual light 212e.Light beam 212o
Polarization direction along the y-axis direction, the polarization direction of light beam 212e is along the x-axis direction.Light beam 212o is anti-through the second polarization light-dividing surface 322
The first magneto-optical crystal 51 is reached after penetrating；Light beam 211o is after the first magneto-optical crystal 51, and polarization direction has rotated 45 ° counterclockwise, light
After beam 212o is using the first wave plate 41, polarization direction has rotated clockwise 45 ° again, and the polarization state of light beam does not change, light beam
It is denoted as 212o ', still along the y-axis direction, the x/y plane sectional view below Fig. 7 denotes light beam 212o polarization state for polarization direction
Variation.Light beam 212e reaches the 4th fully reflecting surface of the second polarization splitting prism 32 after the transmission of the second polarization light-dividing surface 322
321, the first magneto-optical crystal 51 is reached after the reflection of the 4th fully reflecting surface 321；Light beam 212e is after the first magneto-optical crystal 51, polarization
Direction has rotated 45 ° counterclockwise, and after light beam 212e is using the first wave plate 41, polarization direction has rotated clockwise 45 ° again, light beam
Polarization state do not change, light beam is denoted as 212e ', polarization direction along the x-axis direction, the x/y plane sectional view mark below Fig. 7
The variation of light beam 212e polarization state.After the first polarization splitting prism of light beam 212o ' arrival 31, by the first polarization splitting prism
The first polarization light-dividing surface 312 of the first polarization splitting prism 31, light beam 212e ' are reached after 31 the second fully reflecting surface 313 reflection
Also the first polarization light-dividing surface 312 of the first polarization splitting prism 31 is reached.First polarization spectro of the first polarization splitting prism 31
Two-beam is synthesized a branch of synthesis light beam 213 by face 312, and synthesis light beam 213 is received defeated by the third optical fiber 13 of first collimator 21
Out.
It can be seen from the figure that the 5th fully reflecting surface 323 and third fully reflecting surface 314, directly affect 212 He of collimated light beam
Reflection and the refractive direction for synthesizing light beam 212 ', to directly affect the second optical fiber 12 and third optical fiber 13 of first collimator 21
Corresponding angle design.Being exactly conversely speaking, can be by the inclination angle of the 5th fully reflecting surface 323 and third fully reflecting surface 314
Design matches the second optical fiber 12 and the corresponding angle of third optical fiber 13 of first collimator 21.
Please refer to the schematic diagram that Fig. 8 is two optical circulator light path principle of the embodiments of the present invention.
Two superminiature optical circulator of the embodiments of the present invention, including first collimator 21, the first polarization splitting prism
31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32.First polarization splitting prism 31 includes first
Fully reflecting surface 311, the first polarization light-dividing surface 312 and the second fully reflecting surface 313.Second polarization splitting prism 32 includes the 4th complete
Reflecting surface 321, the second polarization light-dividing surface 322 and the 5th fully reflecting surface 323.
Wherein, first collimator 21 is three optical fiber collimators, will be collimated from the light of the first optical fiber 11 and the second optical fiber 12
At collimated light beam；Collimated light beam is imported into the second optical fiber 12 and third optical fiber 13；First polarization splitting prism 31, second polarization point
Light prism 32 is used to resolving into the input light of free position into the vertical polarized component in two beam polarization directions or polarizes two beams
The vertical polarized component in direction synthesizes a light beam.First wave plate 41, the first magneto-optical crystal 51 are used to change the polarization state of light beam.
It can be seen from the figure that the difference of optical path and embodiment one is to minus third fully reflecting surface 314, then third
Fully reflecting surface 314 and the 5th fully reflecting surface 323 are adjusted toward two sides, with the folder of match first collimator 21 three fine collimated light beams
Angle.Other optical path trends and principle, are complete class than embodiment one.Obviously, if three fine collimated lights of first collimator 21
The angle of beam cannot become larger, it is necessary to elongate corresponding cross distance.Compared with embodiment one, structure looks like simply,
But volume needs are widened and are elongated.
Please refer to the schematic diagram that Fig. 9 is three optical circulator light path principle of the embodiments of the present invention.
Three superminiature optical circulator of the embodiments of the present invention, including the second collimator 22, third collimator 23, first
Polarization splitting prism 31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32.First polarization splitting prism
31 include the first fully reflecting surface 311, the first polarization light-dividing surface 312 and the second fully reflecting surface 313.Second polarization splitting prism 32
It include the 4th fully reflecting surface 321, the second polarization light-dividing surface 322 and the 5th fully reflecting surface 323.
Wherein, the second collimator 22 is double-fiber collimator, and the light from the first optical fiber 11 is collimated into collimated light beam, will
Collimated light beam imports the second optical fiber 12；Third collimator 23 is single optical fiber calibrator, and the light from the second optical fiber 12 is collimated into
Collimated light beam is imported third optical fiber 13 by collimated light beam；First polarization splitting prism 31, the second polarization splitting prism 32 are used to will
The input light of free position resolves into the vertical polarized component in two beam polarization directions or the polarization that two beam polarization directions are vertical
Component synthesizes a light beam.First wave plate 41, the first magneto-optical crystal 51 are used to change the polarization state of light beam.
It can be seen from the figure that the difference of optical path and embodiment one is to minus third fully reflecting surface 314, then three fibres
First collimator 21 is decomposed into double-fiber collimator of first optical fiber 11 together with third optical fiber 13 --- 22 and of the second collimator
The single fiber collimator of second optical fiber 12 --- third collimator 23.Other optical path trends and principle, are complete class than embodiment one
's.Obviously, it because of the first collimator 21 of one three fine collimator, is decomposed into the second collimator of double-fiber collimator 22 and single fiber is quasi-
Straight device third collimator 23, the angle of light beam can be such as easy to control, and the debugging process in assembling can be more relatively easy.Cost
It is exactly that lateral distance can become larger, while cannot use coaxial circular tube structure.
Please refer to the schematic diagram that Figure 10 is four optical circulator light path principle of the embodiments of the present invention.
Four superminiature optical circulator of the embodiments of the present invention, including third collimator 23, the 4th collimator the 24, the 5th
Collimator 25, the first polarization splitting prism 31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32.First
Polarization splitting prism 31 includes the first fully reflecting surface 311, the first polarization light-dividing surface 312 and the second fully reflecting surface 313.Second partially
The Amici prism 32 that shakes includes the 4th fully reflecting surface 321, the second polarization light-dividing surface 322 and the 5th fully reflecting surface 323.
Wherein, third collimator 23 is single optical fiber calibrator, and the light from the second optical fiber 12 is collimated into collimated light beam, will
Collimated light beam imports third optical fiber 13；4th collimator 24 is single optical fiber calibrator, and the light from the first optical fiber 11 is collimated into
Collimated light beam is imported the second optical fiber 12 by collimated light beam；5th collimator 25 is single optical fiber calibrator, will come from third optical fiber 13
Light be collimated into collimated light beam；First polarization splitting prism 31, the second polarization splitting prism 32 are used to the input of free position
Photodegradation synthesizes a light at the vertical polarized component in two beam polarization directions or by the vertical polarized component in two beam polarization directions
Beam.First wave plate 41, the first magneto-optical crystal 51 are used to change the polarization state of light beam.
It can be seen from the figure that the difference of optical path and embodiment three is, and double-fiber collimator --- the second collimator 22 is divided
Solution is the 4th collimator 24 of the first optical fiber 11 and the 5th fine collimator 25 of third optical fiber 13.Other optical path trends and principle,
It is complete class than embodiment three.Obviously, because of three single fiber collimators, independent opposite to each other, there is no the angles of light beam
Problem, the debugging process in assembling can be more relatively easy.Cost is exactly that lateral distance can be bigger, while cannot use coaxially
Circular tube structure can only use free-space structure.
As seen from the above analysis, increase the direction increase for perhaps adjusting reflecting mirror in optical path or change refraction
The direction of prism, equally may be implemented single fiber collimator and/or double-fiber collimator realizes superminiature optical circulator.
In actual product, need to consider the difficulty of processing and precision distribution in each face of polarization splitting prism, the difficulty of assembly
Degree and required precision, the various aspects such as angle automatching precision of collimator select practical optical path scheme.
Above-listed preferred embodiment has been further described the purpose of this utility model, technical solution and advantage,
It should be understood that the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in practical
Within novel protection scope.
Claims (5)
1. a kind of superminiature optical circulator, including the first optical fiber 11, the second optical fiber 12, third optical fiber 13, the first polarization spectro rib
Mirror 31, the first wave plate 41, the first magneto-optical crystal 51, the second polarization splitting prism 32；First optical fiber 11, the second optical fiber 12,
Third optical fiber 13 is arranged in collimator, it is characterised in that: first polarization splitting prism 31 includes first from top to bottom
Fully reflecting surface 311, the first polarization light-dividing surface 312, the second fully reflecting surface 313；Second polarization splitting prism 32 is from top to bottom
It include the 4th fully reflecting surface 321, the second polarization light-dividing surface 322 and the 5th fully reflecting surface 323；What first optical fiber 11 issued
Light beam coupling is into the second optical fiber 12；The light beam coupling that second optical fiber 12 issues is into third optical fiber 13；The superminiature ring of light
Row device unilateral side fiber；First polarization splitting prism 31, the second polarization splitting prism 32 are used to the input of free position
Photodegradation synthesizes a light at the vertical polarized component in two beam polarization directions or by the vertical polarized component in two beam polarization directions
Beam；First wave plate 41, the first magneto-optical crystal 51 are used to change the polarization state of light beam.
2. a kind of superminiature optical circulator according to claim 1, it is characterised in that: under second fully reflecting surface 313
Side is provided with third fully reflecting surface 314.
3. a kind of superminiature optical circulator according to claim 1, it is characterised in that: the collimator includes the first collimation
Device 21；The first optical fiber 11, the second optical fiber 12, third optical fiber 13 are equipped in the first collimator 21；The first collimator 21
Light from the first optical fiber 11 is collimated into collimated light beam and collimated light beam is imported into the second optical fiber 12；The first collimator 21
Light from the second optical fiber 12 is collimated into collimated light beam and collimated light beam is imported into third optical fiber 13.
4. a kind of superminiature optical circulator according to claim 1, it is characterised in that: the collimator includes the second collimation
Device 22 and third collimator 23；The first optical fiber 11 of setting and third optical fiber 13 in second collimator 22；The third collimation
Second optical fiber 12 is set in device 23.
5. a kind of superminiature optical circulator according to claim 1, it is characterised in that: the collimator includes third collimation
Device 23, the 4th collimator 24, the 5th collimator 25；The second optical fiber 12, the 4th collimator 24 are equipped in the third collimator 23
It is inside equipped with the first optical fiber 11, is equipped with third optical fiber 13 in the 5th collimator 25.
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| CN201920439478.2U CN209657023U (en) | 2019-04-02 | 2019-04-02 | A kind of superminiature optical circulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115963602A (en) * | 2022-12-26 | 2023-04-14 | 武汉灵途传感科技有限公司 | Polarization-maintaining optical fiber circulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115963602A (en) * | 2022-12-26 | 2023-04-14 | 武汉灵途传感科技有限公司 | Polarization-maintaining optical fiber circulator |
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