CN221056706U - Optical circulator - Google Patents
Optical circulator Download PDFInfo
- Publication number
- CN221056706U CN221056706U CN202322542544.8U CN202322542544U CN221056706U CN 221056706 U CN221056706 U CN 221056706U CN 202322542544 U CN202322542544 U CN 202322542544U CN 221056706 U CN221056706 U CN 221056706U
- Authority
- CN
- China
- Prior art keywords
- prism
- parallelogram
- light
- parallelogram prism
- beam splitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The utility model relates to an optical circulator in the field of optical communication, which comprises a magnetic plate; the first beam splitting prism, the Faraday plate, the half wave plate and the second beam splitting prism are fixedly bonded on the magnetic plate in sequence from the S pole to the N pole; the first beam splitting prism comprises a first parallelogram prism and a second parallelogram prism, wherein the inclined plane of the first parallelogram prism and a group of inclined planes of the second parallelogram prism are plated with PBS films and are bonded together up and down; the second beam splitting prism comprises an isosceles right triangle prism and a parallelogram prism III, wherein a PBS film is plated on the inclined plane of the isosceles right triangle prism and a group of inclined planes of the quadrilateral prism IV and the inclined planes are bonded up and down to form a trapezoid second beam splitting prism. The optical fiber transceiver module has the advantages of reasonable structure, small size, simple process, stable receiving and transmitting, low cost and convenience for integration into the optical fiber transceiver module with compact structure, and meets the requirements of clients on receiving and transmitting light of the three-port optical circulator.
Description
Technical Field
The utility model belongs to the technical field of optical communication, and particularly relates to an optical circulator.
Background
In an optical fiber communication system, the transmission of reverse light brings instability to devices and systems, and an optical circulator is a non-reciprocal device with multi-port input and output, so that optical signals can only carry out loop transmission along a fixed path, thereby realizing the separation of forward and reverse transmission light and being widely applied to optical communication electronic systems such as a single-fiber bidirectional transmission system, a dispersion compensation unit, a wavelength blocker, a channel equalizer, a wavelength selective switch and the like. The traditional multiport optical circulator has larger port spacing, and the optical circulator has larger size, which is unfavorable for the integration of the optical circulator into the optical fiber transceiver module with compact structure. Accordingly, there is a need for an optical circulator that addresses the above-described issues.
Disclosure of utility model
In view of the above-mentioned shortcomings of the prior art, the present utility model provides an optical circulator comprising a magnetic plate; the first beam splitting prism, the Faraday plate, the half wave plate and the second beam splitting prism are fixedly bonded on the magnetic plate in sequence from the S pole to the N pole; the surface of the first beam splitting prism, which is close to the Faraday plate, is contacted with the Faraday plate, the Faraday plate and the half-wave plate are bonded together through glue, and the surface of the second beam splitting prism, which is close to the half-wave plate, is contacted with the half-wave plate;
The first beam splitting prism comprises a first parallelogram prism and a second parallelogram prism, wherein an inclined plane of the first parallelogram prism and an inclined plane of the second parallelogram prism are bonded together up and down, and a PBS film is plated on the bonding surface of the first parallelogram prism and the second parallelogram prism; the second beam splitting prism comprises an isosceles right triangle prism and a parallelogram prism III, wherein the inclined plane of the isosceles right triangle prism and one inclined plane of the quadrilateral prism IV are bonded up and down to form a trapezoid second beam splitting prism, and the bonding surfaces of the isosceles right triangle prism and the parallelogram prism III are plated with PBS films.
Preferably, the acute angles of the first parallelogram prism, the second parallelogram prism and the third parallelogram prism are 45 degrees.
Preferably, a surface of the beam splitting prism, which is far away from the Faraday plate, is plated with an air antireflection film, and a surface of the beam splitting prism, which is far away from the Faraday plate, is a light transmitting surface.
Preferably, the surface of the second light splitting prism, which is far away from the half wave plate, is plated with a layer of air antireflection film, and the surface of the second light splitting prism, which is far away from the half wave plate, is a light passing surface.
Preferably, the parameters of the PBS film are: tp is more than or equal to 98%, tp/Ts is more than or equal to 1000:1, and AOI=45°.
The utility model also comprises other components which can enable the optical circulator to be normally used, and the components are all common equipment in the field and are all conventional technical means in the field. In addition, devices or components such as Faraday plates, half wave plates, magnetic plates, PBS films, air anti-reflection films, etc. which are not limited in the utility model, all adopt the conventional technical means in the field and the conventional equipment in the field.
Working principle: when incident light I (S+P full polarization state natural light) enters from the light inlet end I of the light passing surface of the parallelogram prism I, the incident light is divided into two beams of light under the action of the PBS film when passing through the PBS film of the bonding surface of the parallelogram prism I and the parallelogram prism II, the first beam (P light is parallel light) and the second beam (S light is vertical light), and the first beam and the second beam are converged at the light outlet end I of the beam splitting prism II after sequentially passing through the Faraday plate and the half-wave plate, and the specific light path is as follows:
The first light beam is parallel to the first incident light, deflected by 45 degrees through the Faraday plate, then enters the half wave plate, deflected by 45 degrees again through the half wave plate, then turns into S light, then enters the third parallelogram prism, and after total reflection on the lower surface of the third parallelogram prism, is emitted to the PBS film of the bonding surface of the isosceles right triangle prism and the third parallelogram prism, and then is reflected and emitted;
The second beam is perpendicular to the first beam, is deflected by 45 degrees through a Faraday plate after being totally reflected by the upper surface of the first parallelogram prism, is injected into a half wave plate, is deflected by 45 degrees again through the half wave plate, becomes P light, is injected into an isosceles right triangle prism, and is directly injected out after passing through a PBS film of a bonding surface of the isosceles right triangle prism and the third parallelogram prism.
When incident light II (S+P full polarization state natural light) is emitted from a light inlet end II (a light outlet end I) of a light passing surface of the parallelogram prism III, the incident light is divided into two beams of light under the action of a PBS film when passing through a PBS film of a bonding surface of the parallelogram prism III and an isosceles right triangle prism, the first beam (P light is parallel light) and the second beam (S light is perpendicular light), the first beam and the second beam sequentially pass through a half wave plate and a Faraday plate and then are converged at the PBS film of the first beam splitting prism to form natural light, then the natural light is emitted to the bottom edge of the parallelogram prism II, and the natural light is emitted from the light outlet end II of the light passing surface of the parallelogram prism II after total reflection, and the specific light paths are as follows:
The first light beam is parallel to the second incident light beam, deflected by 45 degrees through a half-wave plate, then enters a Faraday plate, deflected by 45 degrees again through the Faraday plate and still is P light, then enters the first parallelogram prism, and after total reflection on the upper surface of the first parallelogram prism, is emitted to a PBS film of a bonding surface of the first parallelogram prism and the second parallelogram prism and then is directly emitted;
The second beam is perpendicular to the second incident beam, is deflected by 45 degrees through a half-wave plate after being totally reflected by the lower surface of the third parallelogram prism, enters the Faraday plate, is deflected again by 45 degrees after passing through the Faraday plate, still is S light, and then enters the second parallelogram prism to be totally reflected and emitted after passing through a PBS film of a bonding surface of the first parallelogram prism and the second parallelogram prism.
The optical fiber transceiver module has the beneficial effects of reasonable structure, small size, simple process and stable transceiver, meets the requirement of a customer on the transceiver of the three-port optical circulator, has low cost, and is beneficial to being integrated into the optical fiber transceiver module with a compact structure.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of an optical circulator according to an embodiment of the utility model;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a light path diagram of FIG. 2;
Fig. 5 is another light path diagram of fig. 2.
In the figure: 1. a parallelogram prism I; 2. a Faraday plate; 3. a half-wave plate; 4. a parallelogram prism III; 5. a magnetic plate; 6. a first light inlet end; 7. a first light outlet end; 8. a second light inlet end; 9. a second light emitting end; 10. a parallelogram prism II; 11. isosceles right triangle prism; 12. p light; 13. s light.
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the utility model are shown, and in which embodiments of the utility model are shown. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this utility model.
Examples
As shown in fig. 1-5, the present utility model provides an optical circulator comprising a magnetic plate 5; the magnetic plate is fixedly bonded with a first light-splitting prism, a Faraday plate 2, a half-wave plate 3 and a second light-splitting prism through 353nd glue from the S pole to the N pole in sequence, the surface of the first light-splitting prism close to the Faraday plate is contacted with the Faraday plate, the Faraday plate and the half-wave plate are bonded together through 353nd glue, the surface of the second light-splitting prism close to the half-wave plate is contacted with the half-wave plate,
The first beam splitting prism comprises a first parallelogram prism 1 and a second parallelogram prism 10, wherein an inclined plane of the first parallelogram prism and an inclined plane of the second parallelogram prism are bonded together up and down, a PBS film is plated on the bonding surface of the first parallelogram prism and the second parallelogram prism, and the coated surfaces are connected through a photoresist process; the two light splitting prisms comprise an isosceles right triangle prism 11 and a parallelogram prism III 4, wherein the inclined plane of the isosceles right triangle prism and one inclined plane of the quadrilateral prism IV are bonded up and down to form a trapezoid light splitting prism II, the bonding surfaces of the isosceles right triangle prism and the parallelogram prism III are plated with PBS films, and the isosceles right triangle prism and the parallelogram prism III are connected through a photoresist process after being plated with the PBS films.
The acute angles of the first parallelogram prism, the second parallelogram prism and the third parallelogram prism are 45 degrees.
The surface of the beam splitting prism, which is far away from the Faraday plate, is plated with an air antireflection film, and the surface of the beam splitting prism, which is far away from the Faraday plate, is a light transmitting surface.
The surface of the second light splitting prism, which is far away from the half wave plate, is plated with a layer of air antireflection film, and the surface of the second light splitting prism, which is far away from the half wave plate, is a light passing surface.
The parameters of the PBS film were: tp is greater than or equal to 98%, tp/Ts is greater than or equal to 1000:1, AOI=45°, PBS- (1550+ -25) nm.
As shown in fig. 4, when the incident light (s+p natural light with full polarization) enters from the light inlet end 6 of the light passing surface of the parallelogram prism one, the incident light passes through the PBS film of the bonding surface of the parallelogram prism one and the parallelogram prism two, and is split into two beams of light under the action of the PBS film, the beam one (P light 12, i.e. parallel light) and the beam two (S light 13, i.e. perpendicular light), and the beam one and the beam two are converged at the light outlet end 7 of the light splitting prism two after sequentially passing through the faraday plate and the half-wave plate, and then exit, the specific optical paths are as follows:
The first light beam is parallel to the first incident light, deflected by 45 degrees through the Faraday plate, then enters the half wave plate, deflected by 45 degrees again through the half wave plate, then turns into S light, then enters the third parallelogram prism, and after total reflection on the lower surface of the third parallelogram prism, is emitted to the PBS film of the bonding surface of the isosceles right triangle prism and the third parallelogram prism, and then is reflected and emitted;
The second beam is perpendicular to the first beam, is deflected by 45 degrees through a Faraday plate after being totally reflected by the upper surface of the first parallelogram prism, is injected into a half wave plate, is deflected by 45 degrees again through the half wave plate, becomes P light, is injected into an isosceles right triangle prism, and is directly injected out after passing through a PBS film of a bonding surface of the isosceles right triangle prism and the third parallelogram prism.
As shown in fig. 5, when the incident light two (s+p full polarization natural light) is incident from the light inlet end two 8 (the same point as the light outlet end one) of the light passing surface of the parallelogram prism three, the incident light is split into two beams of light under the effect of the PBS film when passing through the PBS film of the bonding surface of the parallelogram prism three and the isosceles right triangle prism, the first beam (P light 12, i.e. parallel light) and the second beam (S light 13, i.e. perpendicular light), and the first beam and the second beam sequentially pass through the half-wave plate and the faraday plate, then are converged at the PBS film of the first beam splitting prism to form natural light, and then are emitted to the bottom edge of the parallelogram prism two, and are emitted from the light outlet end two 9 of the light passing surface of the parallelogram prism two after being totally reflected, the specific light path is as follows:
The first light beam is parallel to the second incident light beam, deflected by 45 degrees through a half-wave plate, then enters a Faraday plate, deflected by 45 degrees again through the Faraday plate and still is P light, then enters the first parallelogram prism, and after total reflection on the upper surface of the first parallelogram prism, is emitted to a PBS film of a bonding surface of the first parallelogram prism and the second parallelogram prism and then is directly emitted;
The second beam is perpendicular to the second incident beam, is deflected by 45 degrees through a half-wave plate after being totally reflected by the lower surface of the third parallelogram prism, enters the Faraday plate, is deflected again by 45 degrees after passing through the Faraday plate, still is S light, and then enters the second parallelogram prism to be totally reflected and emitted after passing through a PBS film of a bonding surface of the first parallelogram prism and the second parallelogram prism.
The embodiments of the present utility model have been described above, the description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (3)
1. An optical circulator comprising a magnetic plate; the method is characterized in that: the first beam splitting prism, the Faraday plate, the half wave plate and the second beam splitting prism are fixedly bonded on the magnetic plate in sequence from the S pole to the N pole;
the first beam splitting prism comprises a first parallelogram prism and a second parallelogram prism, wherein an inclined plane of the first parallelogram prism and an inclined plane of the second parallelogram prism are bonded together up and down, and a PBS film is plated on the bonding surface of the first parallelogram prism and the second parallelogram prism; the second light splitting prism comprises an isosceles right triangle prism and a parallelogram prism III, wherein the inclined plane of the isosceles right triangle prism and one inclined plane of the quadrilateral prism IV are bonded together up and down to form a trapezoid light splitting prism II, and the bonding surfaces of the isosceles right triangle prism and the parallelogram prism III are plated with PBS films;
The acute angles of the first parallelogram prism, the second parallelogram prism and the third parallelogram prism are 45 degrees;
The parameters of the PBS film were: tp is more than or equal to 98%, tp/Ts is more than or equal to 1000:1, and AOI=45°.
2. An optical circulator as defined in claim 1, wherein: the surface of the beam splitting prism, which is far away from the Faraday plate, is plated with an air antireflection film.
3. An optical circulator as defined in claim 1, wherein: and the surface, far away from the half wave plate, of the second beam splitting prism is plated with an air antireflection film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322542544.8U CN221056706U (en) | 2023-09-18 | 2023-09-18 | Optical circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322542544.8U CN221056706U (en) | 2023-09-18 | 2023-09-18 | Optical circulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221056706U true CN221056706U (en) | 2024-05-31 |
Family
ID=91202916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322542544.8U Active CN221056706U (en) | 2023-09-18 | 2023-09-18 | Optical circulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221056706U (en) |
-
2023
- 2023-09-18 CN CN202322542544.8U patent/CN221056706U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103513351B (en) | Optical module | |
| WO2019100703A1 (en) | Optical coupling module and electronic device | |
| CN213240587U (en) | Compact optical wavelength division multiplexing demultiplexing device | |
| CN104391361A (en) | Single-fiber bidirectional receiving and transmitting module component | |
| CN113495321A (en) | Circulator with single-ended output | |
| CN211180454U (en) | Optical isolator and laser | |
| CN208188414U (en) | A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly | |
| CN215297755U (en) | Four-port circulator for single-fiber bidirectional communication and optical module | |
| CN104656264A (en) | Polarization beam splitting and combining device | |
| CN221056706U (en) | Optical circulator | |
| CN112799185A (en) | Four-port circulator for single-fiber bidirectional communication and optical module | |
| CN212379609U (en) | Low-cost small-size optical circulator | |
| CN100414333C (en) | A single fiber three-way wave separator/wave combination device | |
| CN111856655B (en) | High-isolation polarization-independent micro free space circulator | |
| CN203838376U (en) | Wavelength division multiplexer for compensating coupling loss of 8-degree inclination end face | |
| CN208833952U (en) | Optical fiber delay line multiplexing optical path structure | |
| CN112698450A (en) | Optical module | |
| CN210348114U (en) | Free space polarized optical isolation component and free space type coherent receiver thereof | |
| CN205317979U (en) | Adjacent wavelength receives and dispatches module | |
| CN1026363C (en) | Optic isolator | |
| CN112882159A (en) | Integrated wavelength division multiplexer | |
| CN201839291U (en) | Chromatic dispersion compensator | |
| CN111694100A (en) | Polarization-independent small-sized integrated free space isolator | |
| CN202075526U (en) | Photoisolator | |
| CN214669708U (en) | Prism assembly for polarization light splitting, four-port circulator and coherent BIDI optical module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |