CN104635347B - A kind of faraday rotation mirror unrelated with wavelength and temperature - Google Patents
A kind of faraday rotation mirror unrelated with wavelength and temperature Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/31—Digital deflection, i.e. optical switching
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/34—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 reflector
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The present invention provides the faraday rotation mirror that a kind of elimination Faraday rotator anglec of rotation is temperature dependent with wavelength.It is the polarized light component removing along anglec of rotation dispersion direction of 90 degree of anglec of rotation deviation after being acted on by Faraday rotator, make the remaining light of each wavelength all in the linear polarization of identical single direction, so as to eliminate the anglec of rotation change of the light of faraday rotation mirror as caused by the wavelength temperature correlation of Faraday rotator, make the polarization state of the output light of faraday rotation mirror unrelated with wavelength temperature.It is an advantage of the invention that the dispersion of the Faraday rotator anglec of rotation and the related influence of temperature caused by any species gyrotropi crystal can be eliminated, it is applied to the occasion of any use Farady rotator.
Description
Technical field
The invention belongs to Fibre Optical Sensor and optical-fibre communications field, relate more specifically to a kind of faraday rotation mirror that eliminates and rotate
The faraday rotation mirror that angle is temperature dependent with wavelength.The application claims applying date is 2013.12.04, Application No.
201310646181.0 patent of invention domestic priority.
Background technology
Optical signal demodulation typically all uses interference formula demodulation method, the development of fibre optic interferometer to reach high resolution
It is a key technology.Polarization maintaining optical fibre price is high, and polarization-maintaining coupler is not also very perfect, limitation in some key technologies
Its application.General single mode fiber can change at random due to birefringence effect, the polarization state of interferometer two-arm, cause output to be interfered
The visibility of signal changes therewith, and this is polarization inducement signal fading effect.
When optical signal carries out the demodulation of interference formula, the fluctuation of visibility of interference fringes will directly affect the stabilization of demodulation result
Property, therefore, the Polarization Control of fibre optic interferometer turns into a key issue of influence optical signal demodulation device.Carry both at home and abroad
Go out a variety of methods for eliminating polarization inducement signal decline, wherein carrying out birefringence-compensated method using faraday rotation mirror can obtain
To good depolarized effect, notification number discloses such faraday rotation mirror for CN103412371A Chinese invention patent.
But, because the intrinsic anglec of rotation dispersion of Faraday rotation crystalline material is temperature dependent characteristic, traditional Faraday rotation
Mirror causes above-mentioned compensation method simultaneously effective to broad band wavelength and big temperature range.Patent application publication number is
CN102906629A patent of invention successfully overcomes method using birefringence element point polarised light, lens the light beam method such as cross
The harmful effect for drawing the wavelength temperature characteristic of rotating crystal to bring, however, when the light beam of two beam energy Gaussian Profiles is in space
Separated when being insufficient to, the conjunction beam mode of lens can cause extinction ratio not high, in order to obtain High Extinction Ratio, patent
CN102906629A requires that the space displacement amount of two-beam is more than more than twice of mode field diameter, this can increase again device size and
Cost.Therefore a kind of new faraday rotation mirror unrelated with wavelength and temperature is invented to be highly profitable.
The content of the invention
The purpose of the present invention is aiming at the defect of prior art, the anglec of rotation deviation 90 after Faraday rotator is acted on
The polarized light component along anglec of rotation dispersion direction of degree is eliminated, and makes the light of remaining each wavelength and all has identical linear polarization
State, thus eliminate by the Faraday rotator anglec of rotation and wavelength, temperature it is related caused by rotation of the faraday rotation mirror to light
The influence that angle is varied with temperature with the anglec of rotation caused by wavelength change and temperature, make faraday rotation mirror and wavelength without
Close, it is temperature independent；The extinction ratio of faraday rotation mirror is improved simultaneously, is reduced Insertion Loss, is reduced the size and reduce cost.
The technical scheme is that：Light beam crosses, and device by the two-beam of polarizing beam splitter outgoing, hand over by the light path at speculum
Change, light beam is each along other side's light path reverse transfer, and polarizing beam splitter is by the polarization after Farady rotator twice rotating Vortex
Light reconsolidates incident main optical path, while making the polarised light along anglec of rotation dispersion direction point of wherein 90 degree of anglec of rotation deviation
Amount deviates main transmission light path, so as to eliminate the influence of the Faraday rotator anglec of rotation related to wavelength temperature, makes faraday
Revolving mirror is unrelated with wavelength and temperature.
The cross light beam function that crosses of device of the light beam of the present invention is realized by three class optical elements：Isotropic polarization nothing
Close refracting prisms element, the Fresnel biprism of such as glass material；Anisotropic polarization correlation refracting prisms element, for example
The promise MAERSK prism or Wollaston prism of birefringent crystal material；Optical interference reflectance coating or ATR Optical medium interface
Constitute beam-deflecting elements.
The Faraday rotator of the present invention is the optics for being rotated the polarization direction of light using magneto-optic effect.Faraday
Circulator generally comprises nonreciprocity magneto-optical crystal and the permanent magnet of saturation magnetic field is provided for crystal.Faraday's rotation of the present invention
Turning device can be made up of the Faraday magnetic optic crystals of two kinds of any thickness, but necessarily meet same light beam by this two kinds of thickness
The anglec of rotation accumulation sum of Faraday magnetic optic crystals is 90 degree, and the technical program just can be achieved.
The polarizing beam splitter of the present invention is polarization spectro optical interference film element or birefringece crystal element or birefringence
Crystal composite component, including but not limited to MacNeal (MacNeille) optical thin film polarization device, Wollaston
(Wollaston) prism polarizers, double Wollaston prism (Double Wollaston prism) polarizers, light beam is inclined
Device (PBD Polarization Beam Displacer) is moved, Lip river breast (Rochon) prism, Niccol (Nicol) prism is two-fold
Penetrate angle of wedge piece (Birefringent Crystal Wedge), Senarmont prism (Senarmont Prism) or promise MAERSK rib
Mirror (Nomarski Prism).
Preferably technical scheme of the invention is：Light path is by light input coupling element, polarizing beam splitter, the unrelated refraction of polarization
Light beam cross device, Faraday rotator, speculum, Faraday rotator, polarize unrelated deflecting light beams and cross device, polarizing beam splitter
To light input coupling element；Or light path is unrelated by light input coupling element, polarizing beam splitter, Faraday rotator, polarization
Deflecting light beams cross device, speculum, polarize unrelated deflecting light beams device, Faraday rotator, polarizing beam splitter to the light that crosses and input
Coupling element.Two light beams separated by polarizing beam splitter the road of two-beam along other side after the unrelated deflecting light beams of polarization cross device
Through reverse transfer, the electric field oscillation face of two-beam is rotated close to 90 degree after Faraday rotator twice, is redirected back into polarization
Two-beam is reconsolidated in space after optical splitter, and the two-beam anglec of rotation deviate 90 degree along the inclined of anglec of rotation dispersion direction
Light components of shaking then are widened transmission of angle and distance in space, it is impossible to transmitted along main optical path, are eliminated the anglec of rotation and are deviateed 90 degree
Along influence of the polarized light component of anglec of rotation dispersion direction to main optical path polarization state, various wavelength are realized all with identical
Polarization state output.
Polarizing beam splitter described in above-mentioned technical proposal is that polarization spectro optical interference film element or birefringence are brilliant
Volume elements part or birefringece crystal composite component, it is that isotropic optical media is constituted to polarize the unrelated deflecting light beams device that crosses
Refracting element or compound refracting element.Include as the cross refracting element or compound refracting element of device of unrelated deflecting light beams is polarized
But it is not limited to Fresnel biprism (Fresnel Biprism).
The described unrelated deflecting light beams of the polarization device that crosses is that polarization is unrelated.When the unrelated deflecting light beams of incident polarization cross device
Two beam crossed polarized lights when being parallel to each other, the overlapping light energy of this two beams crossed polarized light part light field can not realize light path phase
It is interchangeable, it can also be returned along original optical path, for example, when polarization spectro crystal is light beam deviator (PBD Polarization
Beam Displacer) when, the incident light of Fresnel biprism is directional light, and the extinction ratio of the refraction light of Fresnel biprism is just
Can be relevant with the space displacement amount of two beam crossed polarized lights, in order to obtain high polarization extinction ratio, by light beam deviator point
The space displacement amount for the two beam crossed polarized lights opened needs more than twice of the mode field diameter more than Gaussian Profile；When two incident beams
, also will not be along former light though light field overlapping light energy in part can not realize optical path alignment when crossed polarized light is not parallel to each other
Road is returned, though not influenceing extinction ratio, can increase light path energy loss.For example, polarization spectro crystal is Wollaston
(Wollaston) prism polarizers, its extinction ratio for reflecting light would not depend on the space displacement amount of two beam crossed polarized lights.
Another of the invention preferable technical scheme is：Light is incident from light input coupling element, sequentially passes through polarization spectro
Device, polarize unrelated deflecting light beams cross device, Faraday rotator, speculum, Faraday rotator, polarize unrelated deflecting light beams and hand over
Converge device, polarizing beam splitter, reversely exported by the former road of light input coupling element.
Another of the invention preferable technical scheme is：Light is incident from light input coupling element, sequentially passes through polarization spectro
Device, Faraday rotator, polarize unrelated deflecting light beams cross device, speculum, polarize unrelated deflecting light beams and cross device, faraday's rotation
Turn device, polarizing beam splitter, reversely exported by the former road of light input coupling element.
Another of the invention preferable technical scheme is：Light path passes through light input coupling element, polarizing beam splitter and reflection
Cross device composite component, Faraday rotator, speculum, Faraday rotator, polarizing beam splitter and the reflected beams of light beam cross
Device composite component crosses two light beams that device composite component separates again to light input coupling element by polarizing beam splitter and the reflected beams
After crossing, path reverse transfer of the two-beam along other side, the electric field oscillation face of two-beam is revolved after Faraday rotator twice
Transfer nearly 90 degree, be redirected back into polarizing beam splitter and the reflected beams two-beam after device composite component that crosses is closed again in space
And, and the polarized component light along anglec of rotation dispersion direction that the two-beam anglec of rotation deviates 90 degree is then widened transmission angle in space
Degree and distance, it is impossible to transmitted along main optical path, eliminate the polarised light along anglec of rotation dispersion direction point that the anglec of rotation deviates 90 degree
The influence to main optical path polarization state is measured, realizing various wavelength all there is identical polarization state to export.
Polarizing beam splitter and the reflected beams described in above-mentioned technical proposal cross device composite component be polarizing beam splitter and
The reflected beams cross the composite component of both devices function.Polarizing beam splitter is polarization spectro optical interference film element or double
Refracting crystal element or birefringece crystal composite component, the reflected beams device that crosses is optical interference reflectance coating or total reflection light
Learn medium interface and constitute beam-deflecting elements.Include but is not limited to as polarizing beam splitter and the reflected beams the device composite component that crosses
Lateral displacement polarizing beam splitter (Lateral Displacement Polarizing splitter) or side include high reflection
The light beam deviator ((PBD Polarization Beam Displacer) at rate interface.
The described polarizing beam splitter and the reflected beams device composite component that crosses only relies upon light beam phase to the reflection deviation of light
To the incident direction of reflecting surface, two beam crossed polarized lights to being separated certain angle by polarizing beam splitter, its reflected light disappears
Light by the coincidence degree of two beam crossed polarized light dimensional energy distributions than not influenceed.
The present invention also has a kind of preferable technical scheme to be：Light is incident from light input coupling element, sequentially passes through polarization point
Light device and the reflected beams cross device composite component, Faraday rotator, speculum, Faraday rotator, polarizing beam splitter and anti-
Irradiating light beam cross device composite component, reversely exported by the former road of light input coupling element.
Superior technique scheme of the present invention is：Light path is inclined by light input coupling element, polarizing beam splitter, birefringece crystal
The light beam that shakes cross device, Faraday rotator, speculum, Faraday rotator, birefringece crystal light beam cross device, polarization point
Light device is to light input coupling element.Two light beams separated by polarizing beam splitter are two after birefringece crystal light beam crosses device
Roads of the Shu Guang along other side is through reverse transfer, and the electric field oscillation face of two-beam is rotated close to 90 after Faraday rotator twice
Degree, is redirected back into two-beam after polarizing beam splitter and is reconsolidated in space, and the two-beam anglec of rotation deviates 90 degree of edge rotation
The polarized component light in angular dispersion direction is then widened transmission of angle and distance in space, it is impossible to is transmitted, is eliminated along main optical path
The anglec of rotation deviates influence of 90 degree of the polarized light component along anglec of rotation dispersion direction to main optical path polarization state, realizes each
Planting wavelength all there is identical polarization state to export.
Polarizing beam splitter described in above-mentioned technical proposal is that polarization spectro optical interference film element or birefringence are brilliant
While volume elements part or birefringece crystal composite component, birefringece crystal light beam cross device be also birefringece crystal member
Part or birefringece crystal composite component；Or, polarizing beam splitter and birefringece crystal polarised light described in above-mentioned technical proposal
The cross composite component of both devices function of beam is polarizing beam splitter and birefringece crystal light beam crosses device composite component, is also
The composite component of birefringece crystal.Cross the birefringece crystal element or birefringece crystal of device as birefringece crystal light beam
Composite component includes but is not limited to Wollaston (Wollaston) prism, double Wollaston prism (Double Wollaston
Prism), light beam deviator (PBD Polarization Beam Displacer), Lip river breast (Rochon) prism, Nico
That (Nicol) prism, birefringent wedge cornual plate (Birefringent Crystal Wedge), Senarmont prism (Senarmont
) or promise MAERSK prism (Nomarski Prism) Prism；Crossed device as polarizing beam splitter and birefringece crystal light beam
The complex birefringent crystal element of composite component includes but is not limited to promise MAERSK prism (Nomarski Prism).
Described birefringece crystal light beam cross device birefringece crystal element or birefringece crystal composite component only
Different deviation effects, therefore this deviation effect and different polarization states light to different polarization states are produced to different polarization states
Beam is unrelated in the coincidence degree of the Energy distribution in space, and coincidence degree of the two beam crossed polarized lights in space does not interfere with deviation light
Polarization extinction ratio and light path energy loss.
The composite crystal that described promise MAERSK prism is made up of two pieces of birefringece crystal angles of wedge, compact conformation more should
For differential interference phase-contrast microscope.Cross effect of the promise MAERSK prism to two beam polarised lights only relies upon the inclined of institute's deviation light
Shake direction, and the Gaussian beam energy space distribution with two beam polarised lights is unrelated, and the energy space of even this two-beam has coincidence,
It, which remains unchanged, can obtain very high polarization extinction ratio, and the polarization extinction ratio of promise MAERSK prism is only dependent upon birefringece crystal in itself
Extinction ratio, the extinction ratio for the faraday rotation mirror that promise MAERSK prism is constituted is not by ordinary light and extraordinary ray Gaussian beam energy
Spatial distribution is limited.
The light beam of the lens beam crossed polarized light of device requirement two that crosses is parallel to each other incidence, and the light of beam energy lap is not
Optical path alignment can be realized, can also be returned along original optical path, the energy that these original optical paths are returned will reduce extinction ratio, therefore lens are done
For light beam cross device composition faraday rotation mirror extinction ratio depend on light energy spatial distribution.To obtain higher delustring
Light beam than, lens crosses that spatially separated two beam crossed polarized lights are at a distance of enough space displacement amounts for device requirement, such as
Need more than twice of the mode field diameter more than Gaussian Profile.The extinction ratio of faraday rotation mirror is limited by two beam crossed polarized lights
Space displacement amount size, the displacement of larger crossed polarized light could be obtained using the birefringent material of large-size.
The present invention also has two kinds of superior technique schemes：
One kind is that light is incident from light input coupling element, sequentially passes through polarizing beam splitter, birefringece crystal light beam and hands over
Converge device, Faraday rotator, speculum, Faraday rotator, birefringece crystal light beam cross device, polarizing beam splitter, by
Light input coupling element original road is reversely exported.
Another is that light is incident from light input coupling element, sequentially passes through polarizing beam splitter and birefringece crystal light beam
Cross device composite component, Faraday rotator, speculum, Faraday rotator, polarizing beam splitter and birefringece crystal polarised light
Beam cross device composite component, reversely exported by the former road of light input coupling element.
Anglec of rotation dispersion and the anglec of rotation and the temperature of the nonreciprocal gyrotropi crystal of faraday can be completely eliminated in the present invention
The related influence to the faraday rotation mirror anglec of rotation of degree.
Brief description of the drawings
Fig. 1 is the angular dispersion curve map of faraday's crystal
Fig. 2 is the angle temperature dependency curve figure of faraday's crystal
Fig. 3 is the structural representation of promise MAERSK prism
Fig. 4 is the luminous intensity Gaussian Profile schematic diagram of two beam polarized orthogonal light
Fig. 5 includes the structural representation of the light beam deviator at high reflectance interface for the side of the present invention
Fig. 6 is the structural representation of the lateral displacement polarizing beam splitter of the present invention
Structural representations and index path of the Fig. 7 for embodiments of the invention 1
Fig. 8 is one of polarization state figure of transmitting beam of the embodiment of the present invention 1
Fig. 9 is the two of the polarization state figure of the transmitting beam of the embodiment of the present invention 1
Figure 10 is the three of the polarization state figure of the transmitting beam of the embodiment of the present invention 1
Structural representations and index path of the Figure 11 for embodiments of the invention 2
Structural representations and index path of the Figure 12 for embodiments of the invention 3
Structural representations and index path of the Figure 13 for embodiments of the invention 4
Structural representations and index path of the Figure 14 for embodiments of the invention 5
Embodiment
The present invention is described in detail with accompanying drawing with reference to embodiments：
Fig. 1 is nonreciprocity Faraday magnetic optic crystals under saturation magnetic field effect, its anglec of rotation and ripple to linearly polarized light
Under long dispersion relation, certain temperature, wavelength is longer, and the anglec of rotation is smaller.
Fig. 2 is nonreciprocity Faraday magnetic optic crystals under saturation magnetic field effect, its anglec of rotation and temperature to linearly polarized light
The relation of degree, to certain wavelength, temperature is higher, and the anglec of rotation is smaller.
Fig. 3 is the structural representation of promise MAERSK prism, and the complex birefringent being made up of two pieces of birefringece crystal angles of wedge is brilliant
Arrow in body, figure respectively illustrates the optical axis direction of two pieces of birefringece crystal angles of wedge, a parallel paper, another vertical paper
Face.
Fig. 4 is the luminous intensity Gaussian Profile schematic diagram of two beam polarized orthogonal light, illustrates two beam directional lights in the optical path
Light energy partly overlaps situation.
Fig. 5 is the structural representation of light beam deviator of the side comprising high reflectance interface of the present invention, high reflection
Interface can be the optical interference film or metal film of the good total reflection interface of polishing or high reflectance.E is inclined
Shake beam deviation device, and f is high reflection interface, and X is optical axis direction.
Fig. 6 is the structural representation of lateral displacement polarizing beam splitter of the side comprising high reflectance interface of the present invention, height
Reflecting interface can be the optical interference film or metal film of the good total reflection interface of polishing or high reflectance.i
For hexahedron glass, j is polarization spectro optical interference film face (MacNeille coating), and k is high reflection interface, j and k
Face is not parallel and forms an angle.
[embodiment 1]
The faraday rotation mirror unrelated with wavelength and temperature in Fig. 7 includes a single mode single optical fiber calibrator 11, one
Promise MAERSK prism 12, its optical axis X1 is consistent with x-axis, and its optical axis X2 is in y-z plane, a Faraday rotator 34, one
Individual dielectric optical thin film plane mirror 15.
From the light 100 of the outgoing of single mode single optical fiber calibrator 11 in Fig. 7, transmitted along rectangular coordinate system z-axis, be mapped to promise Maas
The orthogonal two bunch polarised light ordinary light 111 in polarization direction and extraordinary ray 121 are first divided on base prism 12, by rib
Converged again during two pieces of angle of wedge interfaces of mirror, via Faraday rotator 34, vibration plane rotates about 45 degree, as the He of beam light 112
122, and plane mirror 15 is intersected at, light beam 112 and 122 respectively turns into reflected light 113 and 123, and light path there occurs mutually
Exchange, second of the reflected light 113 and 123 transmitted along z-axis negative direction is by Faraday rotator 34, and vibration plane is also in the same direction again
About 45 degree of rotation, about 90 degree of accumulation rotation, light beam turns into 114 and 124, and into after promise MAERSK prism 12, light beam 124 is by promise horse
12 points of this base prism is extraordinary ray 125 and ordinary light 126, polarized component of the light beam 125 in the y-z plane in light beam 124,
12 points by promise MAERSK prism of light beam 114 is ordinary light 115 and extraordinary ray 116, x-axis side of the light beam 115 in light beam 114
To polarized component, light beam 116 and 126 is spatially merged, and leaving turns into light beam 199 after promise MAERSK prism 12, and light
Beam 115 and 125 spatially separated distances, deviate from main beam 199, it is accurate that final beam 199 is coupled to single mode single fiber
Straight device 11.
Promise MAERSK prism 12 in the present embodiment serves polarizing beam splitter simultaneously and birefringece crystal light beam is handed over
Converge the compound action of device function, be polarizing beam splitter and birefringece crystal light beam crosses device composite component.The present embodiment
Faraday rotation mirror small volume, extinction ratio is high.
The transmitting procedure position (A) of light in Fig. 7, (B), (C), (D), (E), the polarization state corresponding to (F) cross-section
Indicated successively in Fig. 8, Fig. 9, Figure 10 in the figure of correspondence sequence number.
The faraday rotation mirror that the wavelength and temperature of the present embodiment are unrelated is rotated by separating the edge of 90 degree of anglec of rotation deviation
The polarized component in angular dispersion direction, realizes the output of strict 90 degree of anglec of rotation polarized components, the ripple with Faraday rotator
Long and temperature characterisitic is unrelated.
[embodiment 2]
The faraday rotation mirror unrelated with wavelength and temperature in Figure 11 includes a single mode single optical fiber calibrator 11, one
Light beam deviator 22, its optical axis X3 is in y-z plane, a Wollaston prism 23, the parallel x-axis of its optical axis X4, light
The parallel y-axis of axle X5, a Faraday rotator 34, a dielectric optical thin film plane mirror 15.
From the light 300 of the outgoing of single mode single optical fiber calibrator 11 in Figure 11, transmitted along rectangular coordinate system z-axis, be mapped to polarization
It is divided into the orthogonal two bunch polarised light extraordinary ray 311 in polarization direction and ordinary light 321 on beam deviation device 22, by fertile
Converged after the prism 23 of Lars, via Faraday rotator 34, vibration plane rotates about 45 degree, the two-beam 312 as convergence
With 322, and plane mirror 15 is intersected at, light beam 312 and 322 respectively turns into reflected light 313 and 323, and light path there occurs phase
Interchangeable, second of the reflected light 313 and 323 transmitted along z-axis negative direction is by Faraday rotator 34, and vibration plane is also same again
To about 45 degree of rotation, about 90 degree of accumulation rotation, light beam turns into 314 and 324, and after Wollaston prism 23, light beam 324 is inclined
22 points of the beam deviation device that shakes is ordinary light 325 and extraordinary ray 326, the polarization in x-axis direction of the light beam 325 in light beam 324
Component, 22 points by light beam deviator of light beam 314 is extraordinary ray 315 and ordinary light 316, and light beam 315 is come from light beam 314
Y-z plane in polarized component, light beam 316 and 326 is spatially merged, and leaving turns into light beam after light beam deviator 22
399, and light beam 315 and 325 spatially separated distances, main beam 399 is deviate from, final beam 399 is coupled to single mode
Single optical fiber calibrator 11.
Wollaston prism 23 serves birefringece crystal light beam and crossed the effect of device.
The faraday rotation mirror that the wavelength and temperature of the present embodiment are unrelated is rotated by separating the edge of 90 degree of anglec of rotation deviation
The polarized component in angular dispersion direction, realizes the output of strict 90 degree of anglec of rotation polarized components, the ripple with Faraday rotator
Long and temperature characterisitic is unrelated.
[embodiment 3]
The faraday rotation mirror unrelated with wavelength and temperature in Figure 12 includes a single mode single optical fiber calibrator 11, one
Wollaston prism 42, the parallel y-axis of its optical axis X4, the parallel x-axis of its optical axis X5 a, Fresnel biprism 13, its seamed edge is parallel
In x-axis, a Faraday rotator 34, a dielectric optical thin film plane mirror 15.
From the light 400 of the outgoing of single mode single optical fiber calibrator 11 in Figure 12, transmitted along rectangular coordinate system z-axis, be mapped to Walla
It is divided into the orthogonal two bunch polarised light extraordinary ray 411 in polarization direction and ordinary light 421 on this prism 42, then passes through phenanthrene
Alunite ear biprism 13 crosses, then via Faraday rotator 34, and vibration plane rotates about 45 degree, the two-beam as convergence
412 and 422, and plane mirror 15 is intersected at, light beam 412 and 422 respectively turns into reflected light 413 and 423, and light path there occurs
It is exchanged with each other, Faraday rotator 34 and the double ribs of Fresnel is passed through along second of the reflected light 413 and 423 that z-axis negative direction is transmitted
Mirror 13, vibration plane also about 45 degree of rotating Vortex, about 90 degree of accumulation rotation again, light beam turns into 414 and 424, and light beam 424 is by Walla
42 points of this prism is ordinary light 425 and extraordinary ray 426, the polarized component in x-axis direction of the light beam 425 in light beam 424,
42 points by Wollaston prism of light beam 414 is extraordinary ray 415 and ordinary light 416, y-z plane of the light beam 415 in light beam 414
Interior polarized component, light beam 416 and 426 is spatially merged, and leaving turns into light beam 499 after Wollaston prism 42, and light
Beam 415 and 425 spatially separated distances, deviate from main beam 499, it is accurate that final beam 499 is coupled to single mode single fiber
Straight device 11.
Fresnel biprism 13 in the present embodiment, which is served, to be polarized unrelated deflecting light beams and crosses the effect of device.
The faraday rotation mirror that the wavelength and temperature of the present embodiment are unrelated is rotated by separating the edge of 90 degree of anglec of rotation deviation
The polarized component in angular dispersion direction, realizes the output of strict 90 degree of anglec of rotation polarized components, the ripple with Faraday rotator
Long and temperature characterisitic is unrelated.
[embodiment 4]
The faraday rotation mirror unrelated with wavelength and temperature in Figure 13 includes a single mode single optical fiber calibrator 11, one
Side includes the light beam deviator 62 at high reflectance interface, and its optical axis X9 is in y-z plane, a Faraday rotator
34, a dielectric optical thin film plane mirror 15.
From the light 600 of the outgoing of single mode single optical fiber calibrator 11 in Figure 13, transmitted along rectangular coordinate system z-axis, be mapped to side
Orthogonal two bunch in polarization direction is first divided on light beam deviator 62 comprising high reflectance interface and polarizes non-seek
Ordinary light 611 and ordinary light 621, extraordinary ray 611 is by light beam deviator 62 side of the side comprising high reflectance interface
Converged again with ordinary light 621 after reflecting interface, via Faraday rotator 34, vibration plane rotates about 45 degree, as beam light 612
With 622, and plane mirror 15 is intersected at, light beam 612 and 622 respectively turns into reflected light 613 and 623, and light path there occurs phase
Interchangeable, second of the reflected light 613 and 623 transmitted along z-axis negative direction is by Faraday rotator 34, and vibration plane is also same again
To about 45 degree of rotation, about 90 degree of accumulation rotation, light beam turns into 614 and 624, the polarised light at approaching side bread interface containing high reflectance
After beam deviator 62, light beam 624 is successively reflected and reflected deviation, is then split into ordinary light 625 and extraordinary ray 626, light
The polarized component of the vertical y-z plane in light beam 624 of beam 625, light beam 614 is included the light beam at high reflectance interface by side
62 points of deviator is extraordinary ray 615 and ordinary light 616, polarized component of the light beam 615 in y-z plane in light beam 614, light beam
616 and 626 are spatially merged, and light beam is turned into after leaving light beam deviator 62 of the side comprising high reflectance interface
699, and light beam 615 and 625 spatially separated distances, main beam 699 is deviate from, final beam 699 is coupled to single mode
Single optical fiber calibrator 11.
Light beam deviator 62 of the side comprising high reflectance interface in the present embodiment serves polarization spectro simultaneously
Device and the reflected beams cross the effect of device, be polarizing beam splitter and the reflected beams cross device composite component.
The faraday rotation mirror that the wavelength and temperature of the present embodiment are unrelated is rotated by separating the edge of 90 degree of anglec of rotation deviation
The polarized component in angular dispersion direction, realizes the output of strict 90 degree of anglec of rotation polarized components, the ripple with Faraday rotator
Long and temperature characterisitic is unrelated.
[embodiment 5]
The faraday rotation mirror unrelated with wavelength and temperature in Figure 14 includes a single mode single optical fiber calibrator 11, one
Lateral displacement polarizing beam splitter 72, a Faraday rotator 34, a dielectric optical thin film plane mirror 15.
The polarised light direction of an electric field light parallel with x-axis is called s light in content below this example, and the light vertical with x-axis is p light.
From the light 700 of the outgoing of single mode single optical fiber calibrator 11 in Figure 14, transmitted along rectangular coordinate system z-axis, be mapped to transverse direction
The orthogonal two bunch polarised light s light 711 in polarization direction and p light 721, s light 711 are first divided on displacement polarizing beam splitter 72
Converged again with p light 721 behind the offside reflection interface of lateral displacement polarizing beam splitter 72, via Faraday rotator 34, vibration
Face rotates about 45 degree, as beam light 712 and 722, and intersects at plane mirror 15, and light beam 712 and 722 respectively turns into anti-
Light 713 and 723 is penetrated, light path is exchanged with each other, the reflected light 713 and 723 transmitted along z-axis negative direction passes through farad second
Circulator 34, vibration plane also about 45 degree of rotating Vortex, about 90 degree of accumulation rotation again, light beam turns into 714 and 724, into horizontal stroke
To after displacement polarizing beam splitter 72, light beam 724 is then split into p light 725 and s light 726 by reflection deviation, and light beam 725 comes from light
The polarized component of vertical x-axis in beam 724,72 points by lateral displacement polarizing beam splitter of light beam 714 is s light 715 and p light 716, light beam
715 in light beam 714 parallel x-axis polarized component, light beam 716 and 726 is spatially merged, and leaves lateral displacement polarization
Turn into light beam 799 after optical splitter 72, and light beam 715 and 725 spatially separated distances, main beam 799 is deviate from, finally
Light beam 799 is coupled to single mode single optical fiber calibrator 11.
Lateral displacement polarizing beam splitter 72 in the present embodiment serves polarizing beam splitter simultaneously and the reflected beams cross device
Effect, be polarizing beam splitter and the reflected beams cross device composite component.
The faraday rotation mirror that the wavelength and temperature of the present embodiment are unrelated is rotated by separating the edge of 90 degree of anglec of rotation deviation
The polarized component in angular dispersion direction, realizes the output of strict 90 degree of anglec of rotation polarized components, the ripple with Faraday rotator
Long and temperature characterisitic is unrelated.
Claims (6)
1. a kind of faraday rotation mirror unrelated with wavelength and temperature, it is characterized in that：Light is incident from light input coupling element, successively
By polarizing beam splitter and birefringece crystal light beam cross device composite component, Faraday rotator, speculum, faraday rotation
Turn device, polarizing beam splitter and birefringece crystal light beam to cross device composite component, it is reversely defeated by the former road of light input coupling element
Go out；The described polarizing beam splitter and birefringece crystal light beam device composite component that crosses is promise MAERSK prism；Promise MAERSK
The compound action for device function that prism serves polarizing beam splitter simultaneously and birefringece crystal light beam crosses；Described faraday
Circulator is the optics for being rotated the polarization direction of light using magneto-optic effect, comprising nonreciprocity magneto-optical crystal and be crystal
The permanent magnet of saturation magnetic field is provided.
2. a kind of faraday rotation mirror unrelated with wavelength and temperature, it is characterized in that：Light is incident from light input coupling element, successively
Crossed device composite component, Faraday rotator, speculum, Faraday rotator, polarization by polarizing beam splitter and the reflected beams
Optical splitter and the reflected beams cross device composite component, reversely exported by the former road of light input coupling element；Described Faraday rotation
Device is the optics for being rotated the polarization direction of light using magneto-optic effect, is provided comprising nonreciprocity magneto-optical crystal and for crystal
The permanent magnet of saturation magnetic field.
3. a kind of faraday rotation mirror unrelated with wavelength and temperature according to claim 2：It is characterized in that：Described is inclined
Shake optical splitter and the reflected beams device composite component that crosses is that lateral displacement polarizing beam splitter or side include high reflectance interface
Light beam deviator.
4. a kind of faraday rotation mirror unrelated with wavelength and temperature, it is characterized in that：Light is incident from light input coupling element, successively
By polarizing beam splitter, polarize unrelated deflecting light beams and cross device, Faraday rotator, speculum, Faraday rotator, polarization nothing
Close deflecting light beams cross device, polarizing beam splitter, reversely exported by the former road of light input coupling element；Described Faraday rotator is
The optics for being rotated the polarization direction of light using magneto-optic effect, saturation is provided comprising nonreciprocity magneto-optical crystal and for crystal
The permanent magnet in magnetic field.
5. a kind of faraday rotation mirror unrelated with wavelength and temperature, it is characterized in that：Light is incident from light input coupling element, successively
By polarizing beam splitter, Faraday rotator, polarize unrelated deflecting light beams cross device, speculum, polarize unrelated deflecting light beams and hand over
Converge device, Faraday rotator, polarizing beam splitter, reversely exported by the former road of light input coupling element；Described Faraday rotator
It is the optics for being rotated the polarization direction of light using magneto-optic effect, provides full comprising nonreciprocity magneto-optical crystal and for crystal
With the permanent magnet in magnetic field.
6. the faraday rotation mirror that a kind of and wavelength and temperature according to claim 4 or 5 are unrelated：It is characterized in that：It is described
The unrelated deflecting light beams of the polarization device that crosses be Fresnel biprism.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657273.3A CN104635347B (en) | 2013-12-04 | 2014-11-18 | A kind of faraday rotation mirror unrelated with wavelength and temperature |
| PCT/CN2014/092355 WO2015081806A1 (en) | 2013-12-04 | 2014-11-27 | Wavelength-independent and temperature-independent faraday rotating mirror |
| US15/173,744 US9915833B2 (en) | 2013-12-04 | 2016-06-06 | Faraday rotator mirror |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013106461810 | 2013-12-04 | ||
| CN201310646181.0A CN103777361A (en) | 2013-12-04 | 2013-12-04 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
| CN201410657273.3A CN104635347B (en) | 2013-12-04 | 2014-11-18 | A kind of faraday rotation mirror unrelated with wavelength and temperature |
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| Publication Number | Publication Date |
|---|---|
| CN104635347A CN104635347A (en) | 2015-05-20 |
| CN104635347B true CN104635347B (en) | 2017-10-13 |
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| CN201310646181.0A Pending CN103777361A (en) | 2013-12-04 | 2013-12-04 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
| CN201410657273.3A Active CN104635347B (en) | 2013-12-04 | 2014-11-18 | A kind of faraday rotation mirror unrelated with wavelength and temperature |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310646181.0A Pending CN103777361A (en) | 2013-12-04 | 2013-12-04 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
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| Country | Link |
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| CN (2) | CN103777361A (en) |
| WO (1) | WO2015081682A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103777361A (en) * | 2013-12-04 | 2014-05-07 | 匠研光学科技（上海）有限公司 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
| WO2015081806A1 (en) * | 2013-12-04 | 2015-06-11 | 匠研光学科技（上海）有限公司 | Wavelength-independent and temperature-independent faraday rotating mirror |
| CN104317072A (en) * | 2014-10-13 | 2015-01-28 | 匠研光学科技（上海）有限公司 | Faraday rotating lens irrelevant to wavelength and temperature |
| US9823500B2 (en) * | 2014-06-23 | 2017-11-21 | Lightel Technologies, Inc. | Optical assembly for 90° polarization rotation |
| CN106444096A (en) * | 2016-10-19 | 2017-02-22 | 莱特尔科技（深圳）有限公司 | Faraday rotator mirror |
| CN108628013B (en) * | 2017-03-15 | 2024-04-19 | 吕婧菲 | Optical phase conjugate mirror device |
| CN106980156A (en) * | 2017-05-19 | 2017-07-25 | 沃土光纤通信（深圳）有限公司 | A kind of faraday rotation mirror unrelated with wavelength and temperature |
| CN108036783A (en) * | 2017-10-11 | 2018-05-15 | 姚晓天 | Non-interfering formula optical gyroscope and sensing spinning solution based on polarization detection technology |
| CN108153003B (en) * | 2018-01-11 | 2021-08-10 | 广东三石园科技有限公司 | Optoelectronic component |
| US12044906B2 (en) | 2018-10-09 | 2024-07-23 | Soreq Nuclear Research Center | Broadband faraday rotator |
| CN112161931B (en) * | 2020-09-04 | 2022-02-15 | 大连理工大学 | High-sensitivity optical fiber photoacoustic gas detection system and method |
| CN113588216B (en) * | 2021-08-02 | 2023-09-19 | 中国科学院光电技术研究所 | Quick high-precision calibrating device and method for optical zero position of polaroid |
| CN114001675B (en) * | 2021-10-11 | 2024-09-27 | 昂纳科技(深圳)集团股份有限公司 | Angle testing method and system for double-fiber collimator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179549A (en) * | 1996-05-27 | 1998-04-22 | 三星电子株式会社 | Optical isolator |
| JP2001349872A (en) * | 2000-06-06 | 2001-12-21 | Shimadzu Corp | Magnetic sensor |
| CN2482107Y (en) * | 2001-06-06 | 2002-03-13 | 福建华科光电有限公司 | Optical structure |
| US7035497B2 (en) * | 2002-10-25 | 2006-04-25 | Oplink Communications, Inc. | Miniature 1×2 magneto-optic switch |
| CN102023397B (en) * | 2009-09-11 | 2013-02-06 | 福州高意通讯有限公司 | Dimmable filter |
| JP5830723B2 (en) * | 2010-05-27 | 2015-12-09 | アダマンド株式会社 | Optical fiber birefringence compensating mirror and current sensor |
| JP2012008225A (en) * | 2010-06-22 | 2012-01-12 | Fdk Corp | Variable optical phase unit |
| TWI471614B (en) * | 2012-03-22 | 2015-02-01 | Jing Heng Chen | Optical signal transmission direction adjustable optical circulator |
| CN104317072A (en) * | 2014-10-13 | 2015-01-28 | 匠研光学科技（上海）有限公司 | Faraday rotating lens irrelevant to wavelength and temperature |
| CN103777361A (en) * | 2013-12-04 | 2014-05-07 | 匠研光学科技（上海）有限公司 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
| CN103885195B (en) * | 2014-04-11 | 2016-08-17 | 珠海保税区光联通讯技术有限公司 | Faraday rotator mirror and fibre optic interferometer |
-
2013
- 2013-12-04 CN CN201310646181.0A patent/CN103777361A/en active Pending
-
2014
- 2014-06-13 WO PCT/CN2014/079821 patent/WO2015081682A1/en active Application Filing
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| WO2015081682A1 (en) | 2015-06-11 |
| CN103777361A (en) | 2014-05-07 |
| CN104635347A (en) | 2015-05-20 |
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Effective date of registration: 20181122 Address after: 511496 Three 502 blocks, Yuemingxuan 1st Street, Qifu New Village, Panyu District, Guangzhou City, Guangdong Province Patentee after: Luo Yi Address before: Room 354, 20 Block B, 83 Lane 1-42 Hongxiang North Road, Wanxiang Town, Pudong New Area, Shanghai Patentee before: JIANGYAN OPTICAL SCIENCE & TECHNOLOGY (SHANGHAI) CO., LTD. |