CN209728226U - A kind of high damage threshold Polarization filter - Google Patents
A kind of high damage threshold Polarization filter Download PDFInfo
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- CN209728226U CN209728226U CN201920365606.3U CN201920365606U CN209728226U CN 209728226 U CN209728226 U CN 209728226U CN 201920365606 U CN201920365606 U CN 201920365606U CN 209728226 U CN209728226 U CN 209728226U
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Abstract
The utility model discloses a kind of high damage threshold Polarization filters, including hollow antiresonance optical fiber, the fibre core of hollow antiresonance optical fiber is surrounded by the airport of periodic arrangement and is formed, airport and perfect domination set are mutually embedding, air hole inwall painting on the right side of one direction of hollow antiresonance fibre cladding airport is covered with metal material, and reversed airport embeds casing.The utility model is based primarily upon hollow antiresonance optical fiber and the property of SPR, realizes the polarization filtering of high damage threshold.The Polarization filter structure is simple, flexible design and is easy to integrated with optical communication system；The optical fiber structure of selection while the polarization property realized, is eliminated because of other losses such as material bring inherent loss itself and optical nonlinearity, to obtain high damage threshold based on hollow antiresonance optical fiber in conjunction with SPR.
Description
Technical field
The utility model relates to special optical fiber, fiber optic communication, signal processing technology fields, and in particular to one kind is based on hollow
The high damage threshold Polarization filter of antiresonance optical fiber and SPR (surface plasma body resonant vibration).
Background technique
The working principle of Polarization filter is foundation X, and the polarization light loss in Y-direction is different, can be incited somebody to action in certain wave strong point
The light of a certain polarization direction filters out, to reach single polarization output of light.Polarization filter can be used for fiber optic communication, photoswitch,
The fields such as optical fiber polarizer, Fibre Optical Sensor are the important devices in optical communication field.
With the development of communication technology, the miniaturization of filter and high damage threshold have become current development trend.Base
It is realized in the birefringence effect that the Polarization filter of optical fiber structure mainly passes through optical fiber.General single mode Polarization filter is logical
The airport around fiber core is overregulated, breaks its symmetry to realize polarization filtering.But since general single mode is used up
The limitation of fine structure and material, birefringence effect and modal loss are restricted, to can not achieve specific polarization mode
Filter out.
With the development of optical fiber, photonic crystal fiber is also gradually applied to polarization filtering device.Photonic crystals optical fiber structure
Design comparison is flexible, mainly selectively exists with the airport of metal nano-rod rejecting photonic crystal fiber or selectively
Certain thickness metal or liquid, the polarization filtering device of this method design, structure are coated in photonic crystal fiber airport
It is more more complex, manufacture difficulty is big, furthermore absorption and optical nonlinearity of the polarization filtering device due to material of this method design
Etc. factors, lead to the small application for being unfavorable for high power transmission of its damage threshold.
Utility model content
In view of this, lesser in order to solve the Polarization filter damage threshold based on photonic crystal fiber in the prior art
Technical problem, the utility model proposes a kind of high damage threshold Polarization filter based on hollow antiresonance optical fiber and SPR.
The utility model is solved the above problems by following technological means:
A kind of high damage threshold Polarization filter, including hollow antiresonance optical fiber, the fibre core of hollow antiresonance optical fiber is by week
The airport of phase arrangement is around forming, and airport and perfect domination set are mutually embedding, at hollow antiresonance fibre cladding airport one
Air hole inwall painting on the right side of direction is covered with metal material, and reversed airport embeds casing.
Compared with prior art, the beneficial effects of the utility model include at least:
The utility model is based primarily upon hollow antiresonance optical fiber and the property of SPR, realizes the polarization filtering of high damage threshold.
The Polarization filter structure is simple, flexible design and is easy to integrated with optical communication system.
The utility model realizes the high damage of polarization filtering device to reduce the influence of material loss and optical nonlinearity etc.
Hurt threshold value, different from traditional polarization filtering device, the optical fiber structure of selection is to be based on hollow antiresonance optical fiber in conjunction with SPR,
While the polarization property realized, eliminate because of other losses such as material bring inherent loss itself and optical nonlinearity,
To obtain high damage threshold.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the cross-sectional view of high damage threshold Polarization filter；
Fig. 2 is the loss of two polarization modes with the change curve of wavelength.
Description of symbols:
1, hollow antiresonance optical fiber；2, fibre core；3, airport；4, metal material；5, casing；6, perfect domination set.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with attached drawing and
The technical solution of the utility model is described in detail in specific embodiment.It should be pointed out that described embodiment is only
It is only the utility model a part of the embodiment, instead of all the embodiments, based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to the utility model
The range of protection.
The cross section of the high damage threshold Polarization filter of the utility model is as shown in Figure 1, belong to special optical fiber, optical fiber leads to
Letter, field of signal processing.The Polarization filter is based on 1 structure of hollow antiresonance optical fiber.The fibre core 2 of optical fiber by periodic arrangement sky
Stomata 3 is around forming, and transmission medium is air, and airport 3 and perfect domination set 6 are mutually embedding, empty in hollow antiresonance fibre cladding
Air hole inwall painting on the right side of one direction (X) of stomata is covered with metal material 4, and reversed airport (Y) embeds casing 5.
In the implementation case, the loss of two polarization modes is as shown in Figure 2 with the change curve of wavelength.Due to hollow antiresonance
The symmetry of optical fiber is destroyed, the birefringence effect that hollow antiresonance optical fiber has had.When light is incident on metal and optical fiber contact
When face, have metal surface plasma waveguide mode generation, at different wave length, surface plasma wave guide mode respectively with X-direction
Polarization mode and Y-direction polarization mode couple, and the corresponding direction X, Y polarization mode will appear loss and increase severely, at this time X, Y-direction
On loss will appear biggish difference.When embedding casing 5 can be effectively reduced through covering airport on the left of the direction X
Loss, so that X, the loss in Y-direction be made bigger difference occur.As shown in Figure 2,7 peak value of loss of X-direction polarization mode
Smaller, 8 peak value of loss of Y-direction polarization mode is larger, and the wave of the loss peak of direction X polarization mode and Y-direction polarization mode
Long difference is also larger, and wherein the wavelength of the loss peak of Y-direction polarization mode is 1.31 μm.
This optical fiber structure symmetry is destroyed, and birefringence effect is good.Metal material is coated, when light is connect by optical fiber and metal
The generation of surface plasma mould is had when contacting surface, when a direction (X/Y) polarization mode and surface plasmon polaritons phase matched
When (effective refractive index is equal), polarization mode is coupled with surface plasma mould emergence pattern, and the loss of polarization mode increases severely, together
When another direction on polarization mode loss it is unaffected, thus device realize polarization filtering function.Metal is coated simultaneously
Loss when reverse side embedding casing in material direction can be effectively reduced through covering airport, to make X, in Y-direction
There is bigger difference in loss.So that the function of polarization filtering is more preferable.Hollow antiresonance fiber core is air, is being transmitted
It can avoid intrinsic material loss and many limitations in the process, so that the high damage threshold of Polarization filter can be realized.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (1)
1. a kind of high damage threshold Polarization filter, which is characterized in that including hollow antiresonance optical fiber, hollow antiresonance optical fiber
For fibre core by the airport of periodic arrangement around forming, airport and perfect domination set are mutually embedding, empty in hollow antiresonance fibre cladding
Air hole inwall painting on the right side of one direction of stomata is covered with metal material, and reversed airport embeds casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920365606.3U CN209728226U (en) | 2019-03-21 | 2019-03-21 | A kind of high damage threshold Polarization filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920365606.3U CN209728226U (en) | 2019-03-21 | 2019-03-21 | A kind of high damage threshold Polarization filter |
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| CN209728226U true CN209728226U (en) | 2019-12-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208601A (en) * | 2020-03-30 | 2020-05-29 | 东北石油大学 | Polarization filter for simultaneously filtering orthogonally polarized light at communication wavelength |
| CN111257992A (en) * | 2020-02-25 | 2020-06-09 | 北京交通大学 | Hollow anti-resonance optical fiber with core shift structure |
| CN112596280A (en) * | 2020-12-16 | 2021-04-02 | 天津大学 | Terahertz anti-resonance optical fiber polarization regulator |
| CN115185034A (en) * | 2022-05-26 | 2022-10-14 | 广东工业大学 | Single-polarization hollow anti-resonance optical fiber |
-
2019
- 2019-03-21 CN CN201920365606.3U patent/CN209728226U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257992A (en) * | 2020-02-25 | 2020-06-09 | 北京交通大学 | Hollow anti-resonance optical fiber with core shift structure |
| CN111208601A (en) * | 2020-03-30 | 2020-05-29 | 东北石油大学 | Polarization filter for simultaneously filtering orthogonally polarized light at communication wavelength |
| CN111208601B (en) * | 2020-03-30 | 2022-03-25 | 东北石油大学 | Polarization filter for simultaneously filtering orthogonally polarized light at communication wavelength |
| CN112596280A (en) * | 2020-12-16 | 2021-04-02 | 天津大学 | Terahertz anti-resonance optical fiber polarization regulator |
| CN112596280B (en) * | 2020-12-16 | 2021-12-10 | 天津大学 | Terahertz anti-resonance optical fiber polarization regulator |
| CN115185034A (en) * | 2022-05-26 | 2022-10-14 | 广东工业大学 | Single-polarization hollow anti-resonance optical fiber |
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