CN202075524U - Optical depolarization device with high polarization state space random distribution - Google Patents
Optical depolarization device with high polarization state space random distribution Download PDFInfo
- Publication number
- CN202075524U CN202075524U CN2011201524947U CN201120152494U CN202075524U CN 202075524 U CN202075524 U CN 202075524U CN 2011201524947 U CN2011201524947 U CN 2011201524947U CN 201120152494 U CN201120152494 U CN 201120152494U CN 202075524 U CN202075524 U CN 202075524U
- Authority
- CN
- China
- Prior art keywords
- birefringece crystal
- birefringece
- crystal
- optical axis
- optical
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Polarising Elements (AREA)
Abstract
The utility model discloses an optical depolarization device with high polarization state space random distribution.. An incidence plane is parallel to an exit plane and is vertical with an incidence light beam. The optical depolarization device is characterized in that the device is formed by more than three birefringence crystals which are sequentially connected with one another through optical cement; the optical axis of each birefringence crystal is vertical with the incidence light beam; the light axes of at least two adjacent birefringence crystals form an angle of 45 DEG; at least two of the junction surfaces between the birefringence crystals are inclined surfaces; the inclining direction of each inclined surface is different; and an inclination angle is 2-10 DEG. According to the optical depolarization device, the polarization state strip-type banding consistency distribution of a space light beam is weakened. After the optical depolarization device disclosed by the utility model is used, the depolarized exit light can realize random variation of the polarization state in the two dimensional direction on a light through plane, strip-type banding distribution is obviously weakened, and the space distribution evenness of the polarization state can be effectively improved so as to improve depolarization quality.
Description
Technical field
The utility model relates to the optics depolarizer.
Background technology
Electromagnetic wave only, French slip-stick artist's Malus had been found the polarisation of light phenomenon in experiment in 1809.For the research of polarisation of light phenomenon, make propagation law that new understanding arranged to light.The various polarization elements, polarized light instrument and the polarized-light technique that particularly utilize polarisation of light to develop have in recent years been brought into play important effect in modern science and technology.People invent and have found various polarized light source and polarizer spare to play partially, and to have obtained widespread use in human lives's every field to nonpolarized light.Yet polarized light can produce negative influence to system in some cases.
People have done some researchs for polarized light to optical instrument measuring accuracy, optical communication system quality and sensor accuracy influence.As photomultiplier, all there is polarization sensitivity because certain lattice direction is arranged in many photodetectors.In optical communication system, develop rapidly along with the communication technology, when transfer rate improves, communication system is to the polarization mode dispersion in the optical fiber, the relevant modulation of polarization in the electrooptic modulator, and the Polarization-Dependent Gain in the image intensifer, polarization to burn a series of infringements that caused by polarization such as hole also more and more responsive.Polarization effect exerts an influence to the precision of some Fibre Optical Sensor equally, the phase place relevant with polarization state is easy to be subjected to the external environment factor affecting, cause producing a corresponding random phase and change, and go in the useful phase signal that is added to, in input, form decline.In these cases, effectively way is to use depolarizer after light source or before the detector, with the influence that reduces even the elimination polarized light produces optical system.
Depolarizer is a kind of polarized light to be become the device of nonpolarized light, can eliminate the polarization infringement effectively, solves the polarization relevant issues in optical fiber telecommunications system, surveying instrument and the sensor.Develop at present and develop the depolarizer that and to be divided into: space average method, time averaging method, the spectrum method of average and the energy method of average four big classes according to its principle and structure.But every kind of depolarizer all has self defective and deficiency, the depolarizer that has can only carry out depolarization to continuous light, what have can only carry out depolarization to broad spectrum light source, what have utilizes scattering effect can make light depart from former direction as depolarization mechanism and can cause bigger loss of strength, has only by the demand of self and goes to design to satisfy the demand of self device and system.
At monochromatic pulses light, generally only adopt space average depolarization method.There is the problem of bar shaped zonal arrangement in existing monochromatic depolarizer emergent light polarization state.Consistent polarization state is arranged in the bar shaped belt-like zone, be unfavorable for practical application.Development along with technology that the deep and depolarization of light polarization phenomenon research is shaken, the mixed and disorderly inadequately shortcoming that distributes of depolarization method output polarization state distribution at space average, design a kind of crystal wedge depolarizer that is applicable to monochromatic pulses light, can realize depolarization to the monochromatic pulses light of random polarization state, and be on zero the basis at the average degree of polarization that guarantees emergent light integral body, can improve the mixed and disorderly depolarization that distributes of the polarization state quality of shaking.
As shown in Figure 1, China utility model ZL200420060393.7 discloses a kind of to the insensitive monochromatic depolarizer of incident light polarization direction, it is for the plane of polarization that in the prior art before overcoming the monochromatic light of incident constantly the changed deficiency of depolarization light beam fully, provide a kind of to the insensitive monochromatic depolarizer of incident light polarization direction, purpose is and will carries out complete depolarization to polarization direction incident monochromatic light unknown or that often change.This utility model contains 2,4 and three melting quartz glass 1,3,5 of two birefringence quartz crystals to the insensitive monochromatic depolarizer of incident light polarization direction, vertical and the incident beam (incident beam is along major axes orientation incident) of the optical axis of quartz crystal 2 and quartz crystal 4, light is had the birefringence effect, and both optical axises in angle of 45 degrees.The both ends of the surface of quartz crystal 2 and quartz crystal 4 all are dip plane, and the dip plane tilts in mutually perpendicular direction; Melting quartz glass 1,3,5 with the quartz crystal coupling, light is not had birefringence effect, promptly to the incident light isotropy, but very approaching with the refractive index of quartz crystal 2,4, melting quartz glass 1,5 is single-ended the dip plane, and the two ends of melting quartz glass 3 all are set to the dip plane.The single-ended dip plane coupling of one end dip plane of birefringence quartz crystal 2 and melting quartz glass 1, the one end dip plane coupling of the other end of birefringence quartz crystal 2 and melting quartz glass 3, the one end dip plane of birefringece crystal 4 and the other end dip plane of melting quartz glass 3 are complementary, and the single-ended dip plane of the dip plane of the other end and melting quartz glass 5 is complementary.Its annexation is: interconnect with the optical cement form successively between melting quartz glass 1, birefringence quartz crystal 2, melting quartz glass 3, birefringence quartz crystal 4, melting quartz glass 5 each optical surfaces.
Existing optics depolarizer, the problem that has the continuous bar shaped zonal arrangement of polarization state on the emergent light polarization state space, consistent polarization state is arranged in the bar shaped belt-like zone, can cause that the luminous power in the zone is excessive or too small, luminous power in the beam plane between each zone is inhomogeneous, is unfavorable for practical application.Development along with technology that the deep and depolarization of light polarization phenomenon research is shaken, need design and produce a kind of mixed and disorderly optics depolarizer that distributes in high polarization state space that has, realize the mixed and disorderly variation of polarization state two-dimensional directional in logical optical plane, be on zero the basis at the average degree of polarization that guarantees emergent light integral body, improve the space distribution homogeneity of moving back polarized light, improved the depolarization quality of shaking.
The utility model content
The utility model is at the deficiencies in the prior art, a kind of mixed and disorderly optics depolarizer that distributes in the high polarization state of having of monochromatic pulses light space that is applicable to is provided, guaranteeing all can to realize on the basis of effective depolarization for the incident light of random polarization state, and weaken the banded distribution character of the bar shaped of emergent light polarization state in its xsect after the depolarization, realize the mixed and disorderly variation of polarization state two-dimensional directional in logical optical plane, improve the space distribution homogeneity of polarization state, quality thereby the raising depolarization is shaken.
The realization the technical solution of the utility model is as follows:
Has the mixed and disorderly optics depolarizer that distributes in high polarization state space, the plane of incidence is parallel with exit facet, and it is perpendicular with incident beam, it is characterized in that: it is formed by connecting with optical cement successively by the birefringece crystal more than three, the optical axis of each birefringece crystal is all perpendicular with incident beam, has at least the optical axis of two adjacent birefringece crystals to become miter angle; It is dip plane that faying face between birefringece crystal has two faces at least, and the vergence direction of each dip plane is different, and the pitch angle is 2～10 degree.
Further, described optics depolarizer is formed by connecting with optical cement successively by three blocks of birefringece crystals, and two faying faces between three blocks of birefringece crystals are the dip plane, and two dip plane are to tilt in mutually perpendicular direction.Further, three blocks of birefringece crystals are followed successively by first birefringece crystal, second birefringece crystal and the 3rd birefringece crystal; First birefringece crystal becomes miter angle with the optical axis of second birefringece crystal, and second birefringece crystal becomes 15～30 degree angles with the optical axis of the 3rd birefringece crystal.
Further, described optics depolarizer is formed by connecting with optical cement successively by four blocks of birefringece crystals, and four blocks of birefringece crystals are respectively first birefringece crystal, second birefringece crystal, the 3rd birefringece crystal and the 4th birefringece crystal; First birefringece crystal becomes miter angle with optical axis between second birefringece crystal, and its faying face is the dip plane; The 3rd birefringece crystal becomes miter angle with optical axis between the 4th birefringece crystal, and its faying face is the dip plane.Further, second birefringece crystal is parallel with the plane of incidence with the faying face of the 3rd birefringece crystal.Further, first birefringece crystal is identical with the combination of second birefringece crystal and the combination of the 3rd birefringece crystal and the 4th birefringece crystal, and first birefringece crystal becomes 15～30 degree angles with optical axis between the 3rd birefringece crystal.
Further, described optics depolarizer is formed by connecting with optical cement successively by six blocks of birefringece crystals, six blocks of birefringece crystals are respectively first birefringece crystal, second birefringece crystal, the 3rd birefringece crystal, the 4th birefringece crystal, the 5th birefringece crystal and the 6th birefringece crystal, first birefringece crystal, the combination of second birefringece crystal and the 3rd birefringece crystal and the 4th birefringece crystal, the combination of the 5th birefringece crystal and the 6th birefringece crystal is identical, first birefringece crystal becomes miter angle with optical axis between second birefringece crystal, and second birefringece crystal is vertical with optical axis between the 3rd birefringece crystal; First birefringece crystal becomes 15～30 degree angles with optical axis between the 4th birefringece crystal; Two faying faces between first birefringece crystal, second birefringece crystal and the 3rd birefringece crystal are the dip plane, and two dip plane are to tilt in mutually perpendicular direction; Between the 3rd birefringece crystal with the 4th birefringece crystal between faying face parallel with the plane of incidence.
The utility model can be made shapes such as rectangular parallelepiped, right cylinder, oval cylinder according to the light spot shape of incident beam.
The utility model can be made of three blocks of above birefringece crystals and the transparent medium that matches.Crystal ramp structure, optical axis direction combination can be complicated more.
Birefringece crystal can be quartz crystal, kalzit, ruby etc., selects suitable refractive index match medium according to the refractive index of selected birefringece crystal.
The utility model provides a kind of optics depolarizer that is applicable to monochromatic pulses light, guaranteeing all can to realize on the basis of effective depolarization for the incident light of random polarization state, combination by two groups of depolarization crystal, the optical axis direction and the crystal ramp structure of multi-angle are provided, and the banded consistance of polarization state bar shaped that can weaken spatial beam distributes.Behind the utility model depolarizer, emergent light after the depolarization can be realized the mixed and disorderly variation of polarization state at two-dimensional directional in logical optical plane, the bar shaped zonal arrangement obviously weakens, and improves the space distribution homogeneity of polarization state effectively, thereby has improved the depolarization quality of shaking.
Description of drawings
Fig. 1 is a kind of optics depolarizer of the prior art;
Fig. 2 is the common depolarizer that two crystal wedges constitute;
Fig. 3 is through two wedge depolarizer depolarization rear polarizer attitude distribution plans;
Fig. 4 is the light distribution synoptic diagram after the analyzing after two wedge depolarizer depolarizations;
Fig. 5 is the novel depolarizer with the mixed and disorderly distribution in high polarization state space that is made of three crystal wedges;
Fig. 6 is through three wedge depolarizer depolarization rear polarizer attitude distribution plans;
Fig. 7 is the depolarizer structural representation that is made of four quartz crystals;
Fig. 8 is the optical axis angle synoptic diagram of each crystal of depolarizer shown in Figure 7;
Fig. 9 is the depolarizer structural representation that is made of six quartz crystals;
Figure 10 is the optical axis angle synoptic diagram of each crystal of depolarizer shown in Figure 9;
Figure 11 is that the polarization direction and the first birefringece crystal optical axis direction are the surface of intensity distribution after the 0 degree incident light process common double wedge crystal depolarizer depolarization;
Figure 12 is that the polarization direction and the first birefringece crystal optical axis direction are the surface of intensity distribution after the 30 degree incident lights process common double wedge crystal depolarizer depolarizations;
Figure 13 is that the polarization direction and the first birefringece crystal optical axis direction are the surface of intensity distribution after the 45 degree incident lights process common double wedge crystal depolarizer depolarizations;
Figure 14 is that the polarization direction and the first birefringece crystal optical axis direction are the surface of intensity distribution after the 60 degree incident lights process common double wedge crystal depolarizer depolarizations;
Figure 15 is that the polarization direction and the first birefringece crystal optical axis direction are the surface of intensity distribution after the 90 degree incident lights process common double wedge crystal depolarizer depolarizations;
Figure 16 is the surface of intensity distribution of 0 degree incident light after depolarization among the embodiment 1;
Figure 17 is the surface of intensity distribution of 35 degree incident lights after depolarization among the embodiment 1;
Figure 18 is the surface of intensity distribution of 45 degree incident lights after depolarization among the embodiment 1;
Figure 19 is the surface of intensity distribution of 60 degree incident lights after depolarization among the embodiment 1;
Figure 20 is the surface of intensity distribution of 90 degree incident lights after depolarization among the embodiment 1;
Figure 21 is the surface of intensity distribution of 0 degree incident light after depolarization among the embodiment 2;
Figure 22 is the surface of intensity distribution of 35 degree incident lights after depolarization among the embodiment 2;
Figure 23 is the surface of intensity distribution of 45 degree incident lights after depolarization among the embodiment 2;
Figure 24 is the surface of intensity distribution of 60 degree incident lights after depolarization among the embodiment 2;
Figure 25 is the surface of intensity distribution of 90 degree incident lights after depolarization among the embodiment 2;
Figure 26 is the surface of intensity distribution of 0 degree incident light after depolarization among the embodiment 3;
Figure 27 is the surface of intensity distribution of 35 degree incident lights after depolarization among the embodiment 3;
Figure 28 is the surface of intensity distribution of 45 degree incident lights after depolarization among the embodiment 3;
Figure 29 is the surface of intensity distribution of 60 degree incident lights after depolarization among the embodiment 3;
Figure 30 is the surface of intensity distribution of 90 degree incident lights after depolarization among the embodiment 3.
Embodiment
Below in conjunction with accompanying drawing, be described specifically the utlity model has the mixed and disorderly optics depolarizer that distributes in high polarization state space.
Embodiment 1
As shown in Figure 5, by the optics depolarizer with the mixed and disorderly distribution in high polarization state space that three quartz crystals constitute, its connection spectrum is: quartz crystal 51, quartz crystal 52, quartz crystal 53 are designed to rectangular shape.With respect to the incident light direction, quartz crystal 51 front end faces and quartz crystal 53 rear end faces are perpendicular to incident light, quartz crystal 52 front end faces and rear end face tilt in two orthogonal directions, and the angle of inclination is 4 degree, mate mutually between the crystal and connect with the optical cement form.The optical axis direction of three crystal is all perpendicular to the incident light direction, and both out of plumb is also not parallel mutually, becomes 0 degree, 45 degree, 60 degree (regulation is positive along incident light direction clockwise direction) successively with respect to first optical axis of crystal direction.
Embodiment 2
As shown in Figure 7, constitute present embodiment unitized construction synoptic diagram by four quartz crystals, Fig. 8 is the synoptic diagram of four optical axis of crystal directions.Among the figure, the first cover combination quartz crystal 71,72, the fast axle and the y axle angle theta of quartz crystal 71
71=0, the fast axle and the y axle angle theta of quartz crystal 72
72=π/4.The front end face of quartz crystal 71 is perpendicular to the incident light direction, and rear end face tilts around the rotation of x axle; The rear end face of the front end face of quartz crystal 72 and quartz crystal 71 is fitted, and rear end face is perpendicular to the incident light direction.The second cover combination quartz crystal 73,74 is identical with the first cover combination quartz crystal, 71,72 structures, and turns clockwise along incident direction and 30 to spend quartz crystal 73,74 optical axis directions and y axle angle theta
73, θ
74Be respectively 30 degree, 75 degree.
With respect to the incident light direction, quartz crystal 71 front end faces and quartz crystal 72 rear end faces are perpendicular to incident light, and the front end face of quartz crystal 71 rear end faces and quartz crystal 72 tilts, and the angle of inclination is 4 degree, mate mutually between the crystal and connect with the optical cement form.
Embodiment 3
As shown in Figure 9, be the entire combination structural representation that constitutes present embodiment by six quartz crystals, Figure 10 is the synoptic diagram of six optical axis of crystal directions.
The mixed and disorderly optics depolarizer that distributes in high polarization state space that has that is made of six quartz crystals is divided into two covers, every cover interwoven crystal comprises 3 quartz crystals, it connects spectrum: quartz crystal 91, quartz crystal 92, quartz crystal 93, quartz crystal 94, quartz crystal 95, quartz crystal 96 are designed to rectangular shape.With respect to the incident light direction, quartz crystal 91 front end faces and quartz crystal 93 rear end faces are perpendicular to incident light, quartz crystal 92 front end faces and rear end face tilt in two orthogonal directions, and the angle of inclination is 4 degree, mate mutually between the crystal and connect with the optical cement form.Second cover makes up quartz crystal 94,95 and 96 and first cover makes up quartz crystal 91,92 and 93 structures are identical, applying before and after the two cover crystal, and the two is around relative rotation 30 degree of incident light direction.The fast axle and the y axle angle theta of quartz crystal 91
91=0, the fast axle of quartz crystal 92, the quick shaft direction and the y axle angle theta of quartz crystal 93
92, θ
93Be respectively 45 degree ,-45 degree; Second cover makes up the quick shaft direction and the y axle angle theta of quartz crystal 94,95 and 96
94, θ
95, θ
96Be respectively 30 degree, 75 degree, 15 degree.
Claims (7)
1. has the mixed and disorderly optics depolarizer that distributes in high polarization state space, the plane of incidence is parallel with exit facet, and it is perpendicular with incident beam, it is characterized in that: it is formed by connecting with optical cement successively by the birefringece crystal more than three, the optical axis of each birefringece crystal is all perpendicular with incident beam, has at least the optical axis of two adjacent birefringece crystals to become miter angle; It is dip plane that faying face between birefringece crystal has two faces at least, and the vergence direction of each dip plane is different, and the pitch angle is 2～10 degree.
2. optics depolarizer according to claim 1 is characterized in that: be formed by connecting with optical cement successively by three blocks of birefringece crystals, two faying faces between three blocks of birefringece crystals are the dip plane, and two dip plane are to tilt in mutually perpendicular direction.
3. optics depolarizer according to claim 2 is characterized in that: three blocks of birefringece crystals are followed successively by first birefringece crystal, second birefringece crystal and the 3rd birefringece crystal; First birefringece crystal becomes miter angle with the optical axis of second birefringece crystal, and second birefringece crystal becomes 15～30 degree angles with the optical axis of the 3rd birefringece crystal.
4. optics depolarizer according to claim 1, it is characterized in that: be formed by connecting with optical cement successively by four blocks of birefringece crystals, four blocks of birefringece crystals are respectively first birefringece crystal, second birefringece crystal, the 3rd birefringece crystal and the 4th birefringece crystal; First birefringece crystal becomes miter angle with optical axis between second birefringece crystal, and its faying face is the dip plane; The 3rd birefringece crystal becomes miter angle with optical axis between the 4th birefringece crystal, and its faying face is the dip plane.
5. optics depolarizer according to claim 4 is characterized in that: second birefringece crystal is parallel with the plane of incidence with the faying face of the 3rd birefringece crystal.
6. optics depolarizer according to claim 5, it is characterized in that: first birefringece crystal is identical with the combination of second birefringece crystal and the combination of the 3rd birefringece crystal and the 4th birefringece crystal, and first birefringece crystal becomes 15～30 degree angles with optical axis between the 3rd birefringece crystal.
7. optics depolarizer according to claim 1, it is characterized in that: be formed by connecting with optical cement successively by six blocks of birefringece crystals, six blocks of birefringece crystals are respectively first birefringece crystal, second birefringece crystal, the 3rd birefringece crystal, the 4th birefringece crystal, the 5th birefringece crystal and the 6th birefringece crystal, first birefringece crystal, the combination of second birefringece crystal and the 3rd birefringece crystal and the 4th birefringece crystal, the combination of the 5th birefringece crystal and the 6th birefringece crystal is identical, first birefringece crystal becomes miter angle with optical axis between second birefringece crystal, and second birefringece crystal is vertical with optical axis between the 3rd birefringece crystal; First birefringece crystal becomes 15～30 degree angles with optical axis between the 4th birefringece crystal; Two faying faces between first birefringece crystal, second birefringece crystal and the 3rd birefringece crystal are the dip plane, and two dip plane are to tilt in mutually perpendicular direction; Between the 3rd birefringece crystal with the 4th birefringece crystal between faying face parallel with the plane of incidence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201524947U CN202075524U (en) | 2011-05-13 | 2011-05-13 | Optical depolarization device with high polarization state space random distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201524947U CN202075524U (en) | 2011-05-13 | 2011-05-13 | Optical depolarization device with high polarization state space random distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202075524U true CN202075524U (en) | 2011-12-14 |
Family
ID=45113620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201524947U Expired - Fee Related CN202075524U (en) | 2011-05-13 | 2011-05-13 | Optical depolarization device with high polarization state space random distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202075524U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183848A (en) * | 2011-05-13 | 2011-09-14 | 暨南大学 | Optical depolarizer with high-polarization state space random distribution |
| CN111999813A (en) * | 2020-08-07 | 2020-11-27 | 上海中科创欣通讯设备有限公司 | Method for optimizing polarization dependent loss |
-
2011
- 2011-05-13 CN CN2011201524947U patent/CN202075524U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183848A (en) * | 2011-05-13 | 2011-09-14 | 暨南大学 | Optical depolarizer with high-polarization state space random distribution |
| CN111999813A (en) * | 2020-08-07 | 2020-11-27 | 上海中科创欣通讯设备有限公司 | Method for optimizing polarization dependent loss |
| CN111999813B (en) * | 2020-08-07 | 2022-11-18 | 上海中科创欣通讯设备有限公司 | Method for optimizing polarization dependent loss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102183848B (en) | Optical depolarizer with high-polarization state space random distribution | |
| CN103091770B (en) | A kind of photonic crystal fiber polarization beam splitting device | |
| CN100541249C (en) | Two-dimensional complete band gap photon crystal and depolarization beam splitter | |
| CN101832793A (en) | Photonic crystal optical fiber sensor based on polarization interference | |
| Skab et al. | Spin-to-orbital momentum conversion via electro-optic Pockels effect in crystals | |
| CN104597559B (en) | A kind of photonic crystal fiber for being used to produce column vectorial field | |
| CN202075524U (en) | Optical depolarization device with high polarization state space random distribution | |
| CN102650715A (en) | Photonic crystal waveguide TE-polarization separator | |
| CN204241719U (en) | A kind of single polarization single-mould photonic crystal fiber | |
| CN106707405B (en) | The porous core photonic crystal fiber of the big core diameter of high birefringence | |
| CN103575930A (en) | Method and device for manufacturing light trap with hollow photonic crystal fiber | |
| CN105137540A (en) | Short length polarization beam splitter based on liquid crystal filling pohotonic crystal fiber | |
| CN110346950A (en) | A kind of automatically controlled based on crossed slot waveguide removes inclined device | |
| CN103440895A (en) | Device and method for generating stable vortex beams by utilizing liquid-core optical fibers | |
| CN103941337A (en) | Y-type polarization filtering beam splitter based on isomorphic two-dimension photonic crystals | |
| CN107632341A (en) | Double-doped CaF2The preparation method of three-dimensional waveguide type beam splitter in crystal | |
| CN101320135A (en) | Polarization beam splitter prism | |
| CN213302563U (en) | Monochromatic depolarizer insensitive to polarization state of incident light | |
| CN204992240U (en) | Fiber laser of phase place biasing ware and applied phase place biasing ware | |
| CN107037539A (en) | Single polarization transmission formula photonic crystal fiber resonator | |
| CN103345014A (en) | Polarizing prism based on alpha-BaTeMo 2O9 crystal | |
| CN206584029U (en) | A kind of magnetic field intensity sensor-based system based on magnetic fluid and inclined optical fiber grating | |
| CN203595516U (en) | Optical waveguide coupling device for fiber optic gyro | |
| CN203433198U (en) | Device for generating stable vortex light beam by utilizing liquid core optical fiber | |
| CN204854662U (en) | Laser fiber collimator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140513 |