CN104076505B - A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers - Google Patents
A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers Download PDFInfo
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- CN104076505B CN104076505B CN201410356482.4A CN201410356482A CN104076505B CN 104076505 B CN104076505 B CN 104076505B CN 201410356482 A CN201410356482 A CN 201410356482A CN 104076505 B CN104076505 B CN 104076505B
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Abstract
A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers, it is characterised in that: it is made up of distributed feedback laser (1), incident optical (2), the polarizer (3), connection optical fiber (4) and Hollow-Core Photonic Crystal Fibers (5), pressure disc (6), outgoing optical fiber (7), polarization analysis device (8); Distributed feedback laser (1) is connected by incident optical (2) with the polarizer (3), Hollow-Core Photonic Crystal Fibers (5) is connected by fibre-optical splice with incident optical (2), pressure disc (6) includes three identical parts, three pressure disc are fixed on Hollow-Core Photonic Crystal Fibers, first pressure disc is 45 ° with second pressure disc angle, second pressure disc is 45 ° with the 3rd pressure disc angle, and polarization analysis device (8) is connected with Hollow-Core Photonic Crystal Fibers (5) by outgoing optical fiber (7). The present invention be prone to calibration, insertion loss little, compatible good, simple to operate, it is possible to be applied to obtain all kinds of polarized light, there is good practical value and wide application prospect.
Description
Technical field
The invention provides a kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers, belong to technical field of optical fiber polarization.
Background technology
Hollow-Core Photonic Crystal Fibers is made up of the fibre core of the microstructure cladding with pore and hollow, transporting mechanism and traditional fibre core inner total reflection leaded light mechanism have the difference of essence, therefore Hollow-Core Photonic Crystal Fibers is compared with traditional real core silicon optical fiber a lot of unique performance, if do not produced nonlinear effect, the damage threshold of optical fiber is also higher, low bending loss, fiber end face Fresnel reflection is estimated less than 10-4, earth silicon material forms up to 60%, and convenient and traditional fiber welding etc. processes, and the material of optical fiber is made up of single pure silicon dioxide, is conducive to improving the temperature stability of optical fiber.
Summary of the invention
It is an object of the invention to provide a kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers. This device can pass through to regulate the size to the pressure that three pressure disc apply and obtain various types of polarized light. There is simple in construction, the feature such as compatible good.
The present invention is achieved through the following technical solutions:
A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers, it is characterised in that: it is made up of distributed feedback laser (1), incident optical (2), the polarizer (3), connection optical fiber (4) and Hollow-Core Photonic Crystal Fibers (5), pressure disc (6), outgoing optical fiber (7), polarization analysis device (8); Distributed feedback laser (1) is connected by incident optical (2) with the polarizer (3), Hollow-Core Photonic Crystal Fibers (5) is connected by fibre-optical splice with incident optical (2), pressure disc (6) includes three identical parts, three pressure disc are fixed on Hollow-Core Photonic Crystal Fibers, first pressure disc is 45 degree with second pressure disc angle, second pressure disc is 45 degree with the 3rd pressure disc angle, and polarization analysis device (8) is connected with Hollow-Core Photonic Crystal Fibers (5) by outgoing optical fiber (7).
Described a kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers, it is characterized in that: Hollow-Core Photonic Crystal Fibers (5) core diameter average out to 10.9 microns, covering airport spacing is 3.8 microns, porous zone diameter 70 microns, center operating wavelength 1550 nanometers.
Described a kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers, it is characterized in that: pressure disc (6) includes three identical parts, it is both secured on Hollow-Core Photonic Crystal Fibers (5), each pressure disc period profile length is about 20 millimeters, first pressure disc is 45 degree with second pressure disc angle, and second pressure disc is 45 degree with the 3rd pressure disc angle.
The operation principle of the present invention is: distributed feedback laser (1) sends the light wave that centre wavelength is 1550 nanometers, the polarizer (3) is entered by incident optical (2), from the polarizer (3), outgoing is line polarized light, and line polarized light enters Hollow-Core Photonic Crystal Fibers (5) by connecting optical fiber (4). three identical pressure disc are had above Hollow-Core Photonic Crystal Fibers, for this part fiber is applied pressure, first pressure disc is 45 degree with second pressure disc angle, second pressure disc is 45 degree with the 3rd pressure disc angle, when Hollow-Core Photonic Crystal Fibers being applied pressure by each pressure disc, optical fiber can deform upon, the deformation of fibre core and covering airport all can cause the birefringence effect of Hollow-Core Photonic Crystal Fibers, the difference of the pressure of three different directions can produce different birefringence effects, thus the polarization state of the line polarized light propagated in optical fiber produces polarized light of different nature as well as the difference of Hollow-Core Photonic Crystal Fibers deformation, the state of polarized light can be determined by polarization analysis device.
The invention has the beneficial effects as follows: pressure disc can be executed stressed size and obtain all kinds polarized light by regulating by this device, this Polarization Controller has simple in construction simultaneously, easily operated, loss is little, the compatible advantage such as good.
Accompanying drawing explanation
Fig. 1 is the Polarization Controller schematic diagram based on Hollow-Core Photonic Crystal Fibers of the present invention;
Fig. 2 be the present invention corresponding to different surrounding layer thickness time pressure size and birefringence phase contrast relation;
Fig. 3 is the Hollow-Core Photonic Crystal Fibers deformation schematic diagram under pressure of the present invention;
The poincare sphere that Fig. 4 is the polarized light state of the present invention analyzes schematic diagram;
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
Referring to accompanying drawing 1, a kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers, it is characterised in that: it is made up of distributed feedback laser (1), incident optical (2), the polarizer (3), connection optical fiber (4) and Hollow-Core Photonic Crystal Fibers (5), pressure disc (6), outgoing optical fiber (7), polarization analysis device (8); Distributed feedback laser (1) is connected by incident optical (2) with the polarizer (3), Hollow-Core Photonic Crystal Fibers (6) is connected by fibre-optical splice with incident optical (2), pressure disc (6) includes three identical parts, three pressure disc are fixed on Hollow-Core Photonic Crystal Fibers, first pressure disc is 45 degree with second pressure disc angle, second pressure disc is 45 degree with the 3rd pressure disc angle, and polarization analysis device (8) is connected with Hollow-Core Photonic Crystal Fibers (5) by outgoing optical fiber (7).
Distributed feedback laser (1) centre wavelength selected in this example is 1550 nanometers, connect optical fiber (4), incident optical (2) and outgoing optical fiber (7) all with core diameter for 9 microns, cladding diameter is the single-mode fiber of 125 microns, and Hollow-Core Photonic Crystal Fibers is about 10.9 microns as Polarization Controller core diameter. Fig. 2 is the pressure size relation schematic diagram with birefringence phase contrast of the present invention, when, in 20 millimeters of situations of cycle, introducing the pressure needed for 360 degree of phase contrasts is 7.5*106Handkerchief, cladding thickness now is 25 microns, if cladding thickness is reduced to 10 microns, desirable pressure is only 1.25*106Handkerchief.Fig. 3 is Hollow-Core Photonic Crystal Fibers deformation schematic diagram under impressed pressure, and fibre core and the pore in covering all can deform upon under pressure, thus causing the birefringence effect in optical fiber, this is the operation principle of this Polarization Controller. Fig. 4 is that the poincare sphere that polarized light state is corresponding analyzes schematic diagram, first dish applies pressure and makes the state of polarized light along SS ' change, second dish applies pressure and makes the state of polarized light along S ' S " change; the 3rd dish applies pressure and make the state of polarized light along S " S " '; the polarized light of random polarization state all can be executed stressed size and obtain by regulating three pressure disc, and the final polarization state of output polarized light is S " '.
Claims (1)
1. the Polarization Controller based on Hollow-Core Photonic Crystal Fibers, it is characterized in that: distributed feedback laser (1) sends the light wave that centre wavelength is 1550 nanometers, the polarizer (3) is entered by incident optical (2), from the polarizer (3), outgoing is line polarized light, and line polarized light enters Hollow-Core Photonic Crystal Fibers (5) by connecting optical fiber (4), three identical pressure disc (6) are had above Hollow-Core Photonic Crystal Fibers (5), for this part fiber is applied pressure, first pressure disc is 45 ° with second pressure disc angle, second pressure disc is 45 ° with the 3rd pressure disc angle, when Hollow-Core Photonic Crystal Fibers being applied pressure by each pressure disc, optical fiber can deform upon, the deformation of fibre core and covering airport all can cause the birefringence effect of Hollow-Core Photonic Crystal Fibers (5), the difference of the pressure of three different directions can produce different birefringence effects, thus the polarization state of the line polarized light propagated in optical fiber produces polarized light of different nature as well as the difference of Hollow-Core Photonic Crystal Fibers (5) deformation, polarization analysis device (8) can be passed through from the state of the polarized light of outgoing optical fiber (7) outgoing to determine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410356482.4A CN104076505B (en) | 2014-07-23 | 2014-07-23 | A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers |
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| CN201410356482.4A CN104076505B (en) | 2014-07-23 | 2014-07-23 | A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers |
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| CN104076505B true CN104076505B (en) | 2016-06-15 |
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| CN104297208A (en) * | 2014-10-21 | 2015-01-21 | 天津理工大学 | Interferometric optical fiber sensor based on pohotonic crystal optical fiber |
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| GB0615541D0 (en) * | 2006-08-04 | 2006-09-13 | Univ Bath | Optical wave generator |
| US20100303429A1 (en) * | 2009-05-26 | 2010-12-02 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Microstructured Optical Fiber Draw Method with In-Situ Vacuum Assisted Preform Consolidation |
| CN101764350B (en) * | 2009-07-24 | 2011-09-28 | 中国科学院安徽光学精密机械研究所 | Optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber |
| CN102279154B (en) * | 2011-06-23 | 2012-11-28 | 天津大学 | Hollow photon crystal optical fiber-based optical fiber-connected low-pressure gas chamber device |
| CN203339470U (en) * | 2013-05-22 | 2013-12-11 | 中国计量学院 | Hollow-core photonic crystal optical fiber and sealed cavity combined type 1.9 [mu]m wavelength converter |
| CN204009226U (en) * | 2014-07-23 | 2014-12-10 | 中国计量学院 | A kind of Polarization Controller based on Hollow-Core Photonic Crystal Fibers |
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