CN212623190U - Reflective circulator - Google Patents
Reflective circulator Download PDFInfo
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- CN212623190U CN212623190U CN202021258768.6U CN202021258768U CN212623190U CN 212623190 U CN212623190 U CN 212623190U CN 202021258768 U CN202021258768 U CN 202021258768U CN 212623190 U CN212623190 U CN 212623190U
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- wave plate
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- collimator
- fiber collimator
- reflector
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Abstract
The utility model discloses a reflective circulator, which comprises a first optical fiber collimator, a reflector and a second optical fiber collimator; a first light splitting crystal, a first half-wave plate, a second half-wave plate, a roof prism, a Faraday optical rotation plate and a polarization beam splitter are sequentially arranged between the first optical fiber collimator and the reflector; a second light splitting crystal and a third half-wave plate are sequentially arranged between the second optical fiber collimator and the reflector; the first half-wave plate and the third half-wave plate are 45-degree half-wave plates, the second half-wave plate is 22.5-degree half-wave plates, the Faraday optical rotation plate is 22.5 degrees, the first optical fiber collimator is provided with a first port and a second port, and the second optical fiber collimator is provided with a third port. The traditional light splitting crystal arranged in front of the reflecting mirror is replaced by the polarization beam splitter, so that the volume of the whole circulator is effectively reduced.
Description
Technical Field
The utility model relates to an optical fiber communication field, in particular to reflective circulator.
Background
The circulator is one of the devices commonly used in the optical fiber communication industry, and the crystal in the device is too thick due to the long beam combination/splitting distance of the light splitting crystal in the conventional circulator, so that the whole device has larger volume and higher cost.
Disclosure of Invention
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a reflective circulator can reduce the volume.
According to a first aspect embodiment of the present invention, a reflective circulator comprises a first optical collimator, a reflector and a second optical collimator; a first light splitting crystal, a first half-wave plate, a second half-wave plate, a roof prism, a Faraday optical rotation plate and a polarization beam splitter are sequentially arranged between the first optical fiber collimator and the reflector; a second light splitting crystal and a third half-wave plate are sequentially arranged between the second optical fiber collimator and the reflector; the first half-wave plate and the third half-wave plate are 45-degree half-wave plates, the second half-wave plate is 22.5-degree half-wave plates, the Faraday optical rotation plate is 22.5 degrees, the first optical fiber collimator is provided with a first port and a second port, and the second optical fiber collimator is provided with a third port.
According to the utility model discloses reflective circulator has following beneficial effect at least: the traditional light splitting crystal arranged in front of the reflector is replaced by the polarization beam splitter, so that the size of the whole circulator is effectively reduced, and the cost is reduced.
According to some embodiments of the present invention, the first optical collimator, the first beam splitter crystal, the first half-wave plate, the second half-wave plate, the roof prism, the faraday optical rotation plate, and the polarization beam splitter are externally packaged with a first packaging tube.
According to some embodiments of the invention, the second fiber collimator, the second beam splitting crystal and the third half-wave plate are externally encapsulated with a second encapsulation tube.
According to some embodiments of the present invention, the first optical fiber collimator is externally wrapped with a first collimator encapsulation tube; and the outer surface of the second optical fiber collimator is wrapped with a second collimator packaging tube.
According to some embodiments of the utility model, first encapsulation pipe with be provided with first linking glass pipe between the speculum, first linking glass pipe respectively with first encapsulation pipe reaches the speculum adhesion.
According to some embodiments of the utility model, the second encapsulation pipe with be provided with the second between the speculum and link up the glass pipe, the second link up the glass pipe respectively with the second encapsulates the pipe and the speculum adhesion.
According to some embodiments of the utility model, be provided with first glass stick in the first encapsulation pipe, first glass stick is close to one side of first encapsulation pipe sets up to the cambered surface, the diameter of this cambered surface with the diameter of first encapsulation pipe equals, first glass stick is kept away from one side of first encapsulation pipe sets up to the plane, first fiber collimator first beam splitting crystal first half wave plate second half wave plate roof prism faraday rotation piece and polarization beam splitter pastes on this plane.
According to some embodiments of the utility model, be provided with the second glass stick in the second encapsulation pipe, the second glass stick is close to one side of second encapsulation pipe sets up to the cambered surface, the diameter of this cambered surface with the diameter of second encapsulation pipe equals, the second glass stick is kept away from one side of second encapsulation pipe sets up to the plane, second fiber collimator the second beam splitting crystal and the third half-wave plate pastes on this plane.
According to some embodiments of the invention, the first optical collimator and the first collimator encapsulation tube are adhered.
According to some embodiments of the invention, the second fiber collimator is adhered to the second collimator packaging tube.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of an operation mode according to an embodiment of the present invention;
fig. 2 is a schematic view of another operation mode of the embodiment of the present invention;
fig. 3 is a schematic view of the installation structure of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by referring to the orientation description, such as up, down, front, back, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention and simplification of the description of the second optical collimator, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
A reflective circulator comprises a first fiber collimator 110, a reflector 200 and a second fiber collimator 120; a first light splitting crystal 310, a first half-wave plate 410, a second half-wave plate 420, a roof prism 500, a faraday optical rotation plate 600 and a polarization beam splitter 700 are sequentially arranged between the first optical fiber collimator 110 and the reflector 200; a second beam splitting crystal 320 and a third half-wave plate 430 are sequentially arranged between the second fiber collimator 120 and the reflector 200; the first half-wave plate 410 and the third half-wave plate 430 are both 45 ° half-wave plates, the second half-wave plate 420 is a 22.5 ° half-wave plate, the faraday optical rotation plate 600 is 22.5 °, the first fiber collimator 110 is provided with a first port 111 and a second port 112, and the second fiber collimator 120 is provided with a third port 121.
The traditional light splitting crystal arranged in front of the reflecting mirror 200 is replaced by the polarization beam splitter 700, so that the volume of the whole circulator is effectively reduced.
In practical use, referring to fig. 1, when a light beam enters from the first port 111, the polarization state of the light beam L11 exiting from the first fiber collimator 110 passes through the first optical splitter crystal 310, and is split into two light beams L12 and L13 with mutually perpendicular polarization states, that is, the ordinary ray o and the extraordinary ray e; the light beam L12 passes through the first half-wave plate 410, and the light beam L13 does not pass through the first half-wave plate 410, and then passes through the roof prism 500 to collimate the light beams L12 and L13 into light beams parallel to the Z axis, and then enters the polarization beam splitter 700; finally, the polarization states of the two beams of light are not changed, but the positions of the two beams of light are changed; the polarization state of the two beams of light is changed by 22.5 DEG Faraday optical rotation sheet 600 under the action of the magnetic ring, and the two beams of light rotate by 45 DEG; then the two beams of light pass through the roof prism 500 and the second half-wave plate 420, and because the second half-wave plate 420 is a half-wave plate of 22.5 degrees, the polarization states of the two beams of light continue to rotate by 45 degrees; then the ordinary light beam L12 is incident back into the first half-wave plate 410, while the extraordinary light beam L13 does not pass through the first half-wave plate 410, and thus L12 passing through the first half-wave plate 410 continues to be rotated by 90 °; the two beams are incident back to the first light splitting crystal 310 again, combined into a new beam L14, and incident into the second port 112 for further transmission.
Referring to fig. 2, in another operation mode, the light beam incident from the second port 112 is collimated by the first fiber collimator 110 to obtain a collimated light beam L21; the first light splitting crystal 310 splits the light beam L21 into two light beams L22 and L23 with polarization states perpendicular to each other, namely ordinary ray o light and extraordinary ray e light; the light beam L22 passes through the first half wave plate 410, the light beam L23 does not pass through the first half wave plate 410, and an included angle between the first half wave plate 410 and the optical axis is 45 °, at which time the light beam L22 rotates by 90 °; at this time, the light paths of the two beams of light both pass through the second half-wave plate 420; then, the light beams L22 and L23 are collimated into light beams parallel to the Z axis through the roof prism 500, and then enter the Faraday optical rotation sheet 600; under the action of the magnetic ring, the two beams of light rotate 45 degrees at the same time, and the two beams of light after rotation are incident on the polarization beam splitter 700 and are transmitted into the reflector 200; the two beams of light are reflected by the mirror 200 onto the third half-wave plate 430, and the polarization states of the two reflected beams of light are not changed, but the positions of the two reflected beams of light are changed; the ordinary ray L22 of the two reflected rays passes through the third half-wave plate 430, the third half-wave plate 430 is a half-wave plate of 45 °, so that L22 is rotated again by 90 °; finally, the two beams of light converge on the second beam splitter crystal 320, and the two beams of light are combined into a beam of light L24 by the beam splitter crystal, and then guided into the third port 121 under the action of the second fiber collimator 120 to continue transmission.
In some embodiments, referring to fig. 3, a first packaging tube 810 is packaged outside the first fiber collimator 110, the first beam splitting crystal 310, the first half-wave plate 410, the second half-wave plate 420, the roof prism 500, the faraday rotation plate 600, and the polarization beam splitter 700.
In some embodiments, a second packaging tube 820 is packaged outside the second fiber collimator 120, the second beam splitting crystal 320 and the third half-wave plate 430.
In some embodiments, the first fiber collimator 110 is externally wrapped with a first collimator packaging tube 113; the second fiber collimator 120 is wrapped by a second collimator packaging tube 122.
In some embodiments, in order to prevent the falling off, a first engaging glass tube 812 is disposed between the first packaging tube 810 and the reflector 200, and the first engaging glass tube 812 is adhered to the first packaging tube 810 and the reflector 200, respectively. Similarly, a second joining glass tube 822 is disposed between the second packaging tube 820 and the reflector 200, and the second joining glass tube 822 is adhered to the second packaging tube 820 and the reflector 200, respectively.
In some embodiments, in order to facilitate installation of a plurality of components, a first glass rod is disposed in the first packaging tube 810, a side of the first glass rod close to the first packaging tube 810 is provided with an arc surface, a diameter of the arc surface is equal to a diameter of the first packaging tube 810, a side of the first glass rod far away from the first packaging tube 810 is provided with a plane, and the first optical fiber collimator 110, the first light splitting crystal 310, the first half-wave plate 410, the second half-wave plate 420, the roof prism 500, the faraday optical rotation plate 600, and the polarization beam splitter 700 are adhered on the plane. Similarly, in some embodiments, a second glass rod is disposed in the second encapsulation tube 820, a side of the second glass rod close to the second encapsulation tube 820 is set to be an arc surface, a diameter of the arc surface is equal to a diameter of the second encapsulation tube 820, a side of the second glass rod far from the second encapsulation tube 820 is set to be a plane, and the second fiber collimator 120, the second dichroic crystal 320, and the third half-wave plate 430 are adhered to the plane.
In some embodiments, the first fiber collimator 110 is bonded to the first collimator 113 packaging tube.
In some embodiments, the second fiber collimator 120 is bonded to the second collimator packaging tube 122.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A reflective circulator, comprising a first fiber collimator (110), a reflector (200), and a second fiber collimator (120); a first light splitting crystal (310), a first half-wave plate (410), a second half-wave plate (420), a roof prism (500), a Faraday optical rotation plate (600) and a polarization beam splitter (700) are sequentially arranged between the first optical fiber collimator (110) and the reflector (200); a second light splitting crystal (320) and a third half-wave plate (430) are sequentially arranged between the second optical fiber collimator (120) and the reflector (200); the first half-wave plate (410) and the third half-wave plate (430) are both 45-degree half-wave plates, the second half-wave plate (420) is a 22.5-degree half-wave plate, the Faraday optical rotation plate (600) is 22.5 degrees, the first optical fiber collimator (110) is provided with a first port (111) and a second port (112), and the second optical fiber collimator is provided with a third port (121).
2. A reflective circulator as claimed in claim 1, wherein a first packing tube (810) is packed outside the first fiber collimator (110), the first beam splitting crystal (310), the first half-wave plate (410), the second half-wave plate (420), the roof prism (500), the faraday rotation plate (600) and the polarization beam splitter (700).
3. A reflective circulator as claimed in claim 1, wherein the second fibre collimator (120), the second beam splitting crystal (320) and the third half-wave plate (430) are externally encapsulated by a second encapsulation tube (820).
4. A reflective circulator as claimed in claim 1, 2 or 3, wherein the first fibre collimator (110) is externally wrapped by a first collimator tube (113); and the outer surface of the second optical fiber collimator (120) is wrapped with a second collimator packaging tube (122).
5. A reflective circulator as claimed in claim 2, wherein a first joining glass tube (812) is disposed between the first encapsulation tube (810) and the reflector (200), and the first joining glass tube (812) is adhered to the first encapsulation tube (810) and the reflector (200), respectively.
6. A reflective circulator as claimed in claim 3, wherein a second engaging glass tube (822) is disposed between the second encapsulation tube (820) and the reflector (200), and the second engaging glass tube (822) is adhered to the second encapsulation tube (820) and the reflector (200), respectively.
7. A reflective circulator as claimed in claim 2, wherein a first glass rod is disposed in the first encapsulation tube (810), a side of the first glass rod close to the first encapsulation tube (810) is configured as an arc surface, a diameter of the arc surface is equal to a diameter of the first encapsulation tube (810), a side of the first glass rod far from the first encapsulation tube (810) is configured as a plane, and the first fiber collimator (110), the first beam splitter crystal (310), the first half-wave plate (410), the second half-wave plate (420), the roof prism (500), the faraday plate (600) and the polarization beam splitter (700) are adhered to the plane.
8. A reflective circulator as claimed in claim 3, wherein a second glass rod is disposed in the second encapsulation tube (820), a side of the second glass rod close to the second encapsulation tube (820) is provided as a cambered surface, the diameter of the cambered surface is equal to that of the second encapsulation tube (820), a side of the second glass rod far from the second encapsulation tube (820) is provided as a plane, and the second fiber collimator (120), the second beam splitting crystal (320) and the third half-wave plate (430) are pasted on the plane.
9. A reflective circulator as claimed in claim 4, wherein the first fibre collimator (110) is bonded to the first collimator housing tube (113).
10. A reflective circulator as claimed in claim 4, wherein the second fibre collimator (120) is bonded to the second collimator housing tube (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021258768.6U CN212623190U (en) | 2020-06-30 | 2020-06-30 | Reflective circulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021258768.6U CN212623190U (en) | 2020-06-30 | 2020-06-30 | Reflective circulator |
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| Publication Number | Publication Date |
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| CN212623190U true CN212623190U (en) | 2021-02-26 |
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| CN202021258768.6U Active CN212623190U (en) | 2020-06-30 | 2020-06-30 | Reflective circulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114967131A (en) * | 2022-07-28 | 2022-08-30 | 北京弋宸时代科技有限公司 | Self-calibration multi-optical-axis imaging system with wave front shaping function and imaging method thereof |
-
2020
- 2020-06-30 CN CN202021258768.6U patent/CN212623190U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114967131A (en) * | 2022-07-28 | 2022-08-30 | 北京弋宸时代科技有限公司 | Self-calibration multi-optical-axis imaging system with wave front shaping function and imaging method thereof |
| CN114967131B (en) * | 2022-07-28 | 2022-10-18 | 北京弋宸时代科技有限公司 | Self-calibration multi-optical-axis imaging system with wave front shaping function and imaging method thereof |
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