CN103941342A - Structure of polarization-maintaining optical hybrid device - Google Patents
Structure of polarization-maintaining optical hybrid device Download PDFInfo
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- CN103941342A CN103941342A CN201410177571.2A CN201410177571A CN103941342A CN 103941342 A CN103941342 A CN 103941342A CN 201410177571 A CN201410177571 A CN 201410177571A CN 103941342 A CN103941342 A CN 103941342A
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Abstract
The invention discloses a structure of a polarization-maintaining optical hybrid device, and relates to the technical field of optical fiber communications and optical fiber amplifiers. The device comprises a first double-polarization-maintaining optical collimator, a double-pole isolator core, an optical splitter and a second double-polarization-maintaining optical collimator which are sequentially placed from left to right, and therefore the effects of integrating the functions of a polarization-maintaining wavelength division multiplexer, the functions of a polarization-maintaining isolator and the beam splitting function are realized. The structure of the polarization-maintaining optical hybrid device solves the problems that in the prior art, power consumption is high, noise is high, the size is large and the cost is high.
Description
Technical field
The present invention relates to optical fiber communication and fiber amplifier technical field, relate in particular to a kind of mixing integrated device of protecting partial wave division multiplexer, isolator and coupling mechanism function that comprises.
Background technology
In prior art, just for the Optical Passive Devices using Polarization-Maintaining Fiber of polarization maintaining optical fibre amplifier, it is generally the device of function singleness, need repeatedly welding by each function element composition function module, reach the object of the system needing, the power attenuation that this has increased system, has increased the noise of system, has increased the volume of system.
Summary of the invention
The object of the invention is needs in order to solve problem that simple function function element is repeatedly connected in prior art, learn hybrid device structure and propose a kind of polarisation of protecting; This guarantor's polarisation is learned hybrid device structure and has been solved the problem that in conventional art, power attenuation is large, noise is large and the large cost of volume is high.
Technical scheme of the present invention is as follows:
The invention discloses a kind of guarantor's polarisation and learn hybrid device structure, this guarantor's polarisation hybrid device structure comprises from left to right successively protects polarisation collimating apparatus, bipolar isolator core, optical splitter and second pair of guarantor's polarisation collimating apparatus for first pair of placement;
Described first pair of guarantor's polarisation collimating apparatus comprises the first polarization maintaining optical fibre, the 4th polarization maintaining optical fibre, first pair of optical fiber tubule, the first collimation lens, optical filter and the first fixing glass pipe; Described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre penetrate and are ground into 8 degree angles from the left side of first pair of optical fiber tubule, the slow axis of the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre is parallel to each other, the first polarization maintaining optical fibre is parallel with the slow axis of the fibre core line and they self of the 4th polarization maintaining optical fibre, and the first polarization maintaining optical fibre is also vertical with the high low side of first pair of optical fiber tubule with the fibre core line of the 4th polarization maintaining optical fibre; Described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre stick with glue agent and are fixed in first pair of optical fiber tubule, and first pair of optical fiber tubule sticks with glue agent and be fixed in the first fixing glass pipe; The right side of described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre is positioned on the back focal plane of the first collimation lens and sticks with glue agent to be fixed, and the straight end face of the first collimation lens posts optical filter and sticks with glue agent and fixes;
Described bipolar isolator core comprises magnet ring, and sticks with glue successively from left to right agent and be fixed on the first polaroid, the first faraday rotator, the second polaroid, the second faraday rotator and the 3rd polaroid in described magnet ring; Wherein, the polarization direction of the first polaroid and the 3rd polaroid is orthogonal, and the polarization direction of the second polaroid becomes 45 degree with the polarization direction of the first polaroid, the 3rd polaroid; The anglec of rotation of the first faraday rotator and the second faraday rotator is 45 degree;
Described optical splitter comprises the 3rd fixing glass pipe and sticks with glue agent and be fixed on the wollaston prism in described the 3rd fixing glass pipe;
Described second pair of guarantor's polarisation collimating apparatus comprises the second polarization maintaining optical fibre, the 3rd polarization maintaining optical fibre, second pair of optical fiber tubule, the second collimation lens and the second fixing glass pipe; Described the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre penetrate and are ground into 8 degree angles from the right side of second pair of optical fiber tubule, the slow axis of the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre is orthogonal, the slow axis of the fibre core line of the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre and they self is perpendicular or parallel, and the second polarization maintaining optical fibre is also vertical with the high low side of second pair of optical fiber tubule with the fibre core line of the 3rd polarization maintaining optical fibre; Described the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre stick with glue agent and are fixed in second pair of optical fiber tubule, and the left side of the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre is positioned on the back focal plane of the second collimation lens; Described second pair of optical fiber tubule and the second collimation lens stick with glue agent and are fixed in the second fixing glass pipe.
More preferably, the right side of described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre is polished polishing, and is coated with anti-reflection film; The left side of described the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre is polished polishing, and is coated with anti-reflection film.
More preferably, described the first collimation lens is G-Lens.
More preferably, described the second collimation lens is C-Lens.
More preferably, described optical filter is attached to one side on the first collimation lens and is coated with the functional membrane of point wavelength, and another side is coated with anti-reflection film.
More preferably, described the first polaroid and the 3rd polaroid are identical polaroid; Described the first polaroid, the second polaroid and the 3rd polaroid are made by dichroism material, and logical light end face is all coated with anti-reflection film.
More preferably, described the first faraday rotator and the second faraday rotator are identical faraday rotator, are bismuth-substituted rare earth iron garnet single crystal body, and both logical light end faces are all coated with anti-reflection film.
More preferably, described wollaston prism is made up of two single axial birefringence crystal wedge gusset plates that optical axis is orthogonal and optical axis is vertical with incident light direction, and the logical light end face of wollaston prism is coated with anti-reflection film.
More preferably, described guarantor's polarisation hybrid device structure also comprises the 4th fixing glass pipe for fixing bipolar isolator core and the 3rd fixing glass pipe; Also comprise the 5th fixing glass pipe for bridge joint the first fixing glass pipe and the second fixing glass pipe; Also comprise a magnetism-free stainless steel packaging body for last encapsulation.
Beneficial effect of the present invention:
1. the present invention, the function of protecting inclined to one side wavelength division multiplexer, protects inclined to one side insulator functionality, and light splitting function gathers together, and reaches the integrated object of device.
2. the introducing of the first polaroid, the second polaroid and the 3rd polaroid makes the present invention have higher extinction ratio.
3. the selection of bipolar isolator core has improved isolation features of the present invention greatly.
4. adjusting the relative position of bipolar isolator core and wollaston prism, is the splitting ratio that the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre right side place can obtain arbitrary proportion at output terminal.
Brief description of the drawings
Fig. 1 is the structural representation that guarantor's polarisation of the present invention is learned hybrid device structure.
Embodiment
For better explanation the present invention, be now described further with accompanying drawing in conjunction with the embodiments, should be appreciated that specific embodiment described herein is only in order to explain the present invention, the guarantor's polarisation being not intended to limit the present invention is learned hybrid device structure.
As shown in Figure 1, guarantor's polarisation hybrid device structure of the present invention comprises first pair of guarantor's polarisation collimating apparatus of placing successively from left to right, bipolar isolator core, optical splitter and second pair of guarantor's polarisation collimating apparatus.
Protect polarisation collimating apparatus and comprise the first polarization maintaining optical fibre 11, the 4th polarization maintaining optical fibre 12, first pair of optical fiber tubule 13, the first collimation lens 14, optical filter 15 and the first fixing glass pipe 10 for described first pair; Described the first polarization maintaining optical fibre 11 and the 4th polarization maintaining optical fibre 12 penetrate and are ground into 8 degree angles from the left side of first pair of optical fiber tubule 13, the slow axis of the first polarization maintaining optical fibre 11 and the 4th polarization maintaining optical fibre 12 is parallel to each other, the first polarization maintaining optical fibre 11 is parallel with the slow axis of the fibre core line and they self of the 4th polarization maintaining optical fibre 12, and the first polarization maintaining optical fibre 11 is also vertical with the high low side of first pair of optical fiber tubule 13 with the fibre core line of the 4th polarization maintaining optical fibre 12; Described the first polarization maintaining optical fibre 11 and the 4th polarization maintaining optical fibre 12 stick with glue agent and are fixed in first pair of optical fiber tubule 13, and first pair of optical fiber tubule 13 sticks with glue agent and be fixed in the first fixing glass pipe 10; More preferably, the right side grinding and polishing of the first polarization maintaining optical fibre 11 and the 4th polarization maintaining optical fibre 12, with inhibitory reflex light, and is plated to the performance of anti-reflection film to be optimized.The first collimation lens 14 can adopt G-Lens to obtain good collimation effect.The right side of the first polarization maintaining optical fibre 11 and the 4th polarization maintaining optical fibre 12 is positioned on the back focal plane of the first collimation lens 14, on accurate adjusting bracket, regulate if desired the first polarization maintaining optical fibre 11, the right side of the 4th polarization maintaining optical fibre 12 and the spacing of the first collimation lens 14, and stick with glue agent and fix, the loss minimum of the light that makes pumping wavelength from the first polarization maintaining optical fibre 11 to the 4th polarization maintaining optical fibre 12.The straight end face of the first collimation lens 14 posts optical filter 15 and sticks with glue agent and fixes.For reaching good wavelength-division multiplex function, optical filter 15 is attached to one side on the first collimation lens 14 and plates the functional membrane of point wavelength, and another side plates anti-reflection film.
Described bipolar isolator core comprises magnet ring 36, and sticks with glue successively from left to right agent and be fixed on the first polaroid 31, the first faraday rotator 32, the second polaroid 33, the second faraday rotator 34 and the 3rd polaroid 35 in described magnet ring 36; The polarization direction of the first polaroid 31 and the 3rd polaroid 35 is orthogonal, and the polarization direction of the second polaroid 33 becomes 45 degree with the polarization direction of the first polaroid 31, the 3rd polaroid 35; The anglec of rotation of the first faraday rotator 32 and the second faraday rotator 34 is 45 degree; For making the present invention there is good isolation and higher extinction ratio, the first polaroid 31, the second polaroid 33 and the 3rd polaroid 35 are made by dichroism material, light is had to very strong selection and absorb, wherein, the first polaroid 31 and the 3rd polaroid 35 are selected identical polaroid; The first faraday rotator 32 and the second faraday rotator 34 are identical faraday rotator, are bismuth-substituted rare earth iron garnet single crystal body; The logical light end face of described the first polaroid 31, the first faraday rotator 32, the second polaroid 33, the second faraday rotator 34 and the 3rd polaroid 35 is all coated with anti-reflection film.The light path of the logical light of forward of described bipolar isolator core: forward leads to the light time, first light see through the first polaroid 31, polarisation of light direction is identical with the direction of thoroughly shaking of the first polaroid 31 afterwards, again through the first faraday rotator 32, light rotates 45 degree under the magnetic fields of magnet ring 36, at this moment polarisation of light direction is just consistent with the direction of thoroughly shaking of the second polaroid 33, nondestructively see through the second polaroid 33, and then through the second faraday rotator 34 toward equidirectional 45 degree that rotate again, now polarisation of light direction is just consistent with the direction of thoroughly shaking of the 3rd polaroid 35, nondestructively see through the 3rd polaroid 35, complete the logical light of forward, the light path of oppositely cutting light of described bipolar isolator core: in the time having backlight, first light see through the 3rd polaroid 35, polarisation of light direction is identical with the direction of thoroughly shaking of the 3rd polaroid 35 afterwards, again through the second faraday rotator 34, light rotates 45 degree under the magnetic fields of magnet ring 36, at this moment polarisation of light direction is just vertical with the direction of thoroughly shaking of the second polaroid 33, can not see through the second polaroid 33, light is absorbed by the second polaroid 33, reach the once object of isolation, generally, if also have faint light to see through from the direction of thoroughly shaking of the second polaroid 33, light is again by after the first faraday rotator 32 so, polarisation of light direction continues to spend toward same direction rotation 45, now polarisation of light direction is just vertical with the direction of thoroughly shaking of the first polaroid 31, light is absorbed by the first polaroid 31 again, reach the object of secondary isolation, realize oppositely cut-off.
Described optical splitter comprises the 3rd fixing glass pipe 40 and sticks with glue agent and is fixed on the wollaston prism 41 in described the 3rd fixing glass pipe 40; For obtaining good light splitting function, described wollaston prism 41 is made up of two single axial birefringence crystal wedge gusset plates that optical axis is orthogonal and optical axis is vertical with incident light direction, and the logical light end face of wollaston prism 41 is coated with anti-reflection film.
Protect polarisation collimating apparatus and comprise the second polarization maintaining optical fibre 21, the 3rd polarization maintaining optical fibre 22, second pair of optical fiber tubule 23, the second collimation lens 24 and the second fixing glass pipe 20 for described second pair; Described the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22 penetrate and are ground into 8 degree angles from the right side of second pair of optical fiber tubule 23, the slow axis of the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22 is orthogonal, the slow axis of the fibre core line of the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22 and they self is perpendicular or parallel, and the second polarization maintaining optical fibre 21 is also vertical with the high low side of second pair of optical fiber tubule 23 with the fibre core line of the 3rd polarization maintaining optical fibre 22; Described the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22 stick with glue agent and are fixed in second pair of optical fiber tubule 23; The left side of the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 23 is positioned on the back focal plane of the second collimation lens 24, regulates if desired the second polarization maintaining optical fibre 21, the left side of the 3rd polarization maintaining optical fibre 23 and the spacing of the second collimation lens 24 to have good collimation effect to reach described second pair of guarantor's polarisation collimating apparatus on accurate adjusting bracket.Again described second pair of optical fiber tubule 23 and the second collimation lens 24 being sticked with glue to agent is fixed in the second fixing glass pipe 20.More preferably, the left side grinding and polishing of the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22, to resist reflected light, and is plated to the performance of anti-reflection film to be optimized.The second collimation lens 24 can adopt C-Lens to obtain good collimation effect.
Described guarantor's polarisation is learned hybrid device structure and is also comprised the 4th fixing glass pipe 50 for fixing bipolar isolator core and the 3rd fixing glass pipe 40; Also comprise the 5th fixing glass pipe 60 for bridge joint the first fixing glass pipe 10 and the second fixing glass pipe 20; Also comprise a magnetism-free stainless steel packaging body for last encapsulation, in this magnetism-free stainless steel packaging body Fig. 1, do not draw.
As mentioned above, invent described guarantor's polarisation hybrid device structure and comprise first pair of guarantor's polarisation collimating apparatus of placing successively from left to right, bipolar isolator core, optical splitter and second pair of guarantor's polarisation collimating apparatus.Particularly, in the time encapsulating, there are two problems to need to consider, the one, the design parameter of some element; The 2nd, the distance of each element when encapsulation.
Need the parameter of definite element to be: the parameter of described the first collimation lens; The axial length L of described the second collimation lens 24
2with sphere curvature radius R
2; The wedge angle of two angle of wedge sheets of described wollaston prism 41, i.e. the angle of the hypotenuse of the angle of wedge sheet of wollaston prism 41 and relative right-angle side, the namely little acute angle of angle of wedge sheet.
Need to determine that the distance between element has: described the first polarization maintaining optical fibre 11, the right side of the 4th polarization maintaining optical fibre 12 and the distance x of the first collimation lens 14; Described the second polarization maintaining optical fibre 21, the left side of the 3rd polarization maintaining optical fibre 22 and the distance y of the second collimation lens 24; The spacing d that is positioned at second pair of optical fiber tubule 23 of described the second polarization maintaining optical fibre 21, the 3rd polarization maintaining optical fibre 22; The distance z of described first pair of guarantor's polarisation collimating apparatus and second pair of guarantor's polarisation collimating apparatus.
The thinking of determining these parameters and distance is as follows:
First choose described first pair and protect the first required collimation lens 14 of polarisation collimating apparatus, determine thus the parameter of the first collimation lens 14, thereby calculate first pair of waist radius of protecting after polarisation collimating device collimation; For making first pair of coupling efficiency of protecting polarisation collimating apparatus and second pair of guarantor's polarisation collimating apparatus the highest, second pair of waist radius of protecting after polarisation collimating device collimation will equate with first pair of waist radius of protecting after polarisation collimating device collimation, thereby can calculate the axial length L of the second collimation lens 24
2and sphere curvature radius; Be positioned at again the spacing d of second pair of optical fiber tubule 23 according to the focal length of the second collimation lens 24 and described the second polarization maintaining optical fibre 21, the 3rd polarization maintaining optical fibre 22, carry out the wedge angle of two angle of wedge sheets of wollaston prism 41 described in calculative determination.
Concrete method is as follows:
After the first collimation lens 14 is selected, according to the abcd matrix theory of fundamental-mode gaussian beam transmission, can obtain the light that enters by the first polarization maintaining optical fibre 11 waist radius ω after the first collimation lens 14 collimations
1determined by formula one:
Wherein, λ is incident light wavelength, and f (λ) is the focal length of the first collimation lens 14 to setted wavelength λ, ω
01be the spot size of the first polarization maintaining optical fibre 11 to setted wavelength λ, x is the first polarization maintaining optical fibre 11, the right side of the 4th polarization maintaining optical fibre 12 and the distance of the first collimation lens 14, can be similar to and be taken as zero.
According to fundamental-mode gaussian beam coupled wave theory, for making described first pair of coupling efficiency of protecting polarisation collimating apparatus and second pair of guarantor's polarisation collimating apparatus the highest, must meet first pair of waist radius of protecting after polarisation collimating device collimation will equate with second pair of waist radius of protecting after polarisation collimating device collimation, therefore can carry out to select the parameter of the second collimation lens 24, i.e. axial length L
2with sphere curvature radius R
2; According to the abcd matrix theory of fundamental-mode gaussian beam transmission, can obtain the light that enters by the second polarization maintaining optical fibre 21 or the 3rd polarization maintaining optical fibre 22 waist radius ω after the second collimation lens 24 collimations
2determined by formula two:
ω
02be the second polarization maintaining optical fibre 21 or the spot size of the 3rd polarization maintaining optical fibre 22 to setted wavelength λ, the first polarization maintaining optical fibre 11, the second polarization maintaining optical fibre 21, the 3rd polarization maintaining optical fibre 22 conventionally chosen are polarization maintaining optical fibre of the same race, therefore ω
01=ω
02; A, B, C and D are the matrix elements of the abcd matrix of the second collimation lens 24 to fundamental-mode gaussian beam transmission,
wherein L
2be the axial length of the second collimation lens 24, R
2be the radius-of-curvature of the second collimation lens 24 spherical parts, n is the refractive index of the second collimation lens 24 materials own;
y is the second polarization maintaining optical fibre 21, the left side of the 3rd polarization maintaining optical fibre 22 and the distance of the second collimation lens 24.
On the other hand, according to the abcd matrix theory of fundamental-mode gaussian beam transmission, can also obtain beam waist position after the second collimation lens 24 collimations of the light that enters by the second polarization maintaining optical fibre 21 or the 3rd polarization maintaining optical fibre 22 and the distance of the second collimation lens 24 and be determined by formula three:
Conventionally 2Z is defined as to the operating distance of pair of alignment device, therefore protects the distance z=2Z of polarisation collimating apparatus and second pair of guarantor's polarisation collimating apparatus for first pair.
According to the integrated requirement of device, might as well be in the present invention, by z=2Z=4～5 ㎜, then by formula one, formula two and formula three, and ω
1=ω
2, ω
01=ω
02, can select the axial length L of the second appropriate collimation lens 24
2, sphere curvature radius R
2with described the second polarization maintaining optical fibre 21, the left side of the 3rd polarization maintaining optical fibre 22 and the distance y of the second collimation lens 24, can select a suitable y value by finely tuning the second polarization maintaining optical fibre 21, the left side of the 3rd polarization maintaining optical fibre 22 and the distance of the second collimation lens 24 in actual applications.
The focal length of the second collimation lens 24
by the spacing d that is positioned at second pair of optical fiber tubule 23 of above-mentioned selected the second polarization maintaining optical fibre 21, the 3rd polarization maintaining optical fibre 22, light from by the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22 again the subtended angle after the second collimation lens 24 be approximately
light through wollaston prism 41 is separated into two bundles, and its angle [alpha] can obtain according to high crystallographic principle, α=2arcsin (n
e-n
o) tg θ, wherein n
ethe refractive index of wollaston prism 41 to the non-ordinary light of setted wavelength, n
obe wollaston prism 41 to the refractive index through the long ordinary light of standing wave, θ is the angle of wedge of two angle of wedge sheets of above-mentioned wollaston prism 41; In the time of α=β, the two-beam separating from wollaston prism 41 could enter into the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22 well, can select thus the wedge angle of two angle of wedge sheets of described wollaston prism 41.
After selected above-mentioned parameter and distance, when encapsulation, be fixed on wollaston prism 41 in the 3rd fixing glass pipe 40 satisfied with the relative position relation of the second collimation lens 24: the geometric center of wollaston prism 41 is positioned in the focus of the second collimation lens 24; The 3rd fixing glass pipe 40 is enclosed within on the spherical part of the second collimation lens 24, repeatedly rotating the 3rd fixing glass pipe 40 drives wollaston prism 41 to turn to a certain position, guarantee that the luminous energy efficient coupling separating through wollaston prism 41 enters in the second polarization maintaining optical fibre 21 and the 3rd polarization maintaining optical fibre 22, then the 3rd fixing glass pipe 40 and the second collimation lens 24 are sticked with glue to agent fix; The 3rd fixing glass pipe 40 is sticked with glue to agent to be fixed in the 4th fixing glass pipe 50, put into bipolar isolator core from the left end of the 4th fixing glass pipe 50, rotate bipolar isolator core, obtain and stick with glue agent after needed splitting ratio bipolar isolator core is fixed in the 4th fixing glass pipe 50; By first pair of guarantor's polarisation collimating apparatus and second pair of guarantor's polarisation collimating apparatus, adjustment on accurate adjusting bracket is arrived near their operating distance z=2Z, the light inputted from polarization maintaining optical fibre 11 property indices from polarization maintaining optical fibre 21 and 22 outputs is met the demands, then use the 5th fixing glass pipe 60 bridge joint the first fixing glass pipe 10 and the second fixing glass pipes 20; Finally complete last encapsulation with a magnetism-free stainless steel packaging body shielding.
Claims (9)
1. protect polarisation and learn a hybrid device structure, it is characterized in that: comprise first pair of guarantor's polarisation collimating apparatus of placing successively from left to right, bipolar isolator core, optical splitter and second pair of guarantor's polarisation collimating apparatus;
Described first pair of guarantor's polarisation collimating apparatus comprises the first polarization maintaining optical fibre, the 4th polarization maintaining optical fibre, first pair of optical fiber tubule, the first collimation lens, optical filter and the first fixing glass pipe; Described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre penetrate and are ground into 8 degree angles from the left side of first pair of optical fiber tubule, the slow axis of the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre is parallel to each other, the first polarization maintaining optical fibre is parallel with the slow axis of the fibre core line and they self of the 4th polarization maintaining optical fibre, and the first polarization maintaining optical fibre is also vertical with the high low side of first pair of optical fiber tubule with the fibre core line of the 4th polarization maintaining optical fibre; Described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre stick with glue agent and are fixed in first pair of optical fiber tubule, and first pair of optical fiber tubule sticks with glue agent and be fixed in the first fixing glass pipe; The right side of described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre is positioned on the back focal plane of the first collimation lens and sticks with glue agent to be fixed, and the straight end face of the first collimation lens posts optical filter and sticks with glue agent and fixes;
Described bipolar isolator core comprises magnet ring, and sticks with glue successively from left to right agent and be fixed on the first polaroid, the first faraday rotator, the second polaroid, the second faraday rotator and the 3rd polaroid in described magnet ring; Wherein, the polarization direction of the first polaroid and the 3rd polaroid is orthogonal, and the polarization direction of the second polaroid becomes 45 degree with the polarization direction of the first polaroid, the 3rd polaroid; The anglec of rotation of the first faraday rotator and the second faraday rotator is 45 degree;
Described optical splitter comprises the 3rd fixing glass pipe and sticks with glue agent and be fixed on the wollaston prism in described the 3rd fixing glass pipe;
Described second pair of guarantor's polarisation collimating apparatus comprises the second polarization maintaining optical fibre, the 3rd polarization maintaining optical fibre, second pair of optical fiber tubule, the second collimation lens and the second fixing glass pipe; Described the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre penetrate and are ground into 8 degree angles from the right side of second pair of optical fiber tubule, the slow axis of the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre is orthogonal, the slow axis of the fibre core line of the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre and they self is perpendicular or parallel, and the second polarization maintaining optical fibre is also vertical with the high low side of second pair of optical fiber tubule with the fibre core line of the 3rd polarization maintaining optical fibre; Described the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre stick with glue agent and are fixed in second pair of optical fiber tubule, and the left side of the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre is positioned on the back focal plane of the second collimation lens; Described second pair of optical fiber tubule and the second collimation lens stick with glue agent and are fixed in the second fixing glass pipe.
2. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: the right side of described the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre is polished polishing, and is coated with anti-reflection film; The left side of described the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre is polished polishing, and is coated with anti-reflection film.
3. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: described the first collimation lens is G-Lens.
4. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: described the second collimation lens is C-Lens.
5. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: described optical filter is attached to one side on the first collimation lens and is coated with the functional membrane of point wavelength, and another side is coated with anti-reflection film.
6. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: described the first polaroid and the 3rd polaroid are identical polaroid; Described the first polaroid, the second polaroid and the 3rd polaroid are made by dichroism material, and logical light end face is all coated with anti-reflection film.
7. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: described the first faraday rotator and the second faraday rotator are identical faraday rotator, be bismuth-substituted rare earth iron garnet single crystal body, and both logical light end faces are all coated with anti-reflection film.
8. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: described wollaston prism is made up of two single axial birefringence crystal wedge gusset plates that optical axis is orthogonal and optical axis is vertical with incident light direction, and the logical light end face of wollaston prism is coated with anti-reflection film.
9. guarantor's polarisation as claimed in claim 1 is learned hybrid device structure, it is characterized in that: also comprise the 4th fixing glass pipe for fixing bipolar isolator core and the 3rd fixing glass pipe; Also comprise the 5th fixing glass pipe for bridge joint the first fixing glass pipe and the second fixing glass pipe; Also comprise a magnetism-free stainless steel packaging body for last encapsulation.
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| CN201410177571.2A CN103941342A (en) | 2014-04-29 | 2014-04-29 | Structure of polarization-maintaining optical hybrid device |
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| CN201410177571.2A CN103941342A (en) | 2014-04-29 | 2014-04-29 | Structure of polarization-maintaining optical hybrid device |
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| CN105549164A (en) * | 2016-03-16 | 2016-05-04 | 珠海光库科技股份有限公司 | Integrated optical device |
| WO2017041206A1 (en) * | 2015-09-07 | 2017-03-16 | Oplink Communications, Llc | Optical amplifier |
| CN108089352A (en) * | 2018-01-11 | 2018-05-29 | 秦皇岛本征晶体科技有限公司 | Opto-electronic device |
| CN108345132A (en) * | 2018-05-11 | 2018-07-31 | 株洲菲斯罗克光电技术有限公司 | A kind of single polarization transfer control method and fibre optic isolater based on yttrium vanadate crystal |
| CN108490547A (en) * | 2018-04-12 | 2018-09-04 | 上海中科光纤通讯器件有限公司 | Line polarisation converter |
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| CN115469403B (en) * | 2022-08-16 | 2024-06-21 | 广东三石园科技有限公司 | Filtering light splitting device with isolation function |
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