CN102608690B - Polarization glass, polarization glass structural body, polarization glass assembly and optoisolator - Google Patents
Polarization glass, polarization glass structural body, polarization glass assembly and optoisolator Download PDFInfo
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- CN102608690B CN102608690B CN201210036009.9A CN201210036009A CN102608690B CN 102608690 B CN102608690 B CN 102608690B CN 201210036009 A CN201210036009 A CN 201210036009A CN 102608690 B CN102608690 B CN 102608690B
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Abstract
The invention disclosed a spread glass, which can be combined to be used on the spread glass assembly and can make incoming light form straight line polarized light among a plurality of spread glasses. The spread glass possesses different fixed partial optical axis directions. At least part of the surface of the spread glass is corresponding with the fixed partial optical axis directions and possesses a fixed spectral reflectance curve of a visible region. According to the invention, when partial optic axises of the spread glasses are different, the spread glasses can be performed simple division and the spread glasses can not be damaged without marking on the spread glasses. According to the invention, the partial optical axis directions of the spread glasses corresponding to the spectral reflectance curve of a visible region on the surface of the spread glasses are different, thus when the light arrives the spread glasses and sees the condition, the respective tones corresponding with the partial optic axises are different, the difference of the partial optic axises can be distinguished according to the difference of tones.
Description
Technical field
The present invention relates to optical communication field, particularly a kind of light passing through that makes is formed as the spread glass of linear polarization, the spread glass structure that has used this spread glass, spread glass assembly and optoisolator.
Background technology
As everyone knows, with regard to orientation in glass, for example disperse to have, with regard to the glass that the metal microparticle (silver particles or copper particle) of shape anisotropy (shape anisotropy) forms, the light absorption wavestrip of the metal microparticle in this glass is different because injecting polarization direction, thereby this glass becomes polarizer (polarizer).In addition, herein, so-called shape anisotropy refers to that the linear foot of metal microparticle is very little very little different from crossfoot, and so-called orientation refers to that the length direction of multiple shape anisotropy particles is consistent, and towards specific direction, so-called disperse to refer to that shape anisotropy particle is separated from each other is configuring.
The manufacture method of the spread glass of the existing shape anisotropy metal microparticle that is scattered here and there is roughly divided into following several step:
(1) glass material that comprises stannous chloride (cuprous chloride) is mixed into desired composition, by they at approximately 1450 ℃ after melting slow cooling to till room temperature.
(2) then,, by implementing thermal treatment, the particulate of stannous chloride is separated out in glass.
(3), after the particulate that makes stannous chloride is separated out, utilize machining to make to have the prefabricated component of suitable shape.
(4) under defined terms, prefabricated component is extended, thus acicular microparticles of acquisition stannous chloride.
(5) by the glass extending is reduced in hydrogen environment, and obtain the metallic copper particulate of needle-like.
Described spread glass is also used as forming the polarizer of optoisolator.This optoisolator is by obtaining as follows: the spread glass that polarizing axis is become mutually to 45 ° is bonded on the both sides of the Faraday rotator (faraday rotator) consisting of garnet (garnet) etc., and the magnet that Faraday rotator is applied to magnetic field is further being set.
Herein, when manufacturing optoisolator with described spread glass, for example prepare by polarizing axis be 0 ° spread glass be that these two kinds of spread glasses of spread glass of 45 ° are formed as the square size of 11mm, the spread glass of 0 ° is bonded on to a wherein side of the regulation that is still the square Faraday rotator of 11mm, the spread glass of 45 ° is bonded on to the opposite side of the regulation of described Faraday rotator.Then, these are engaged to complete cutting of members is to be less than the square size of 1mm, thereby the member that afterwards these is less than to the square size of 1mm is assembled in respectively and in magnet, produces optoisolator.
In this case, when will be when engaging the member that is less than the square size of 1mm that spread glass forms on the two sides of Faraday rotator and be assembled in magnet, must confirm which face is the face of the polarizing axis of 0 °, which face is the face of 45 °, and must after Jiang Gemian is configured to the face of injecting, outgoing plane of the light of defined, assemble.
In order to distinguish the face of injecting, the outgoing plane of light, carried out by the following in the past, that is, to injecting one of them the suitable position in the spread glass that spread glass that face uses or outgoing plane use, for example, micro-cutting is carried out in end that can not hinder use etc.
But, with regard to the method that spread glass is cut, the space of cutting must be guaranteed in advance, thereby the waste of material can be caused.In addition, the position of being cut can produce chip (chipping), thereby becomes one of reason of yield rate reduction, and then causes the cost of spread glass to rise.
Summary of the invention
The object of the invention is to overcome existing above-mentioned deficiency in prior art, provide one not worry waste of material or produce chip, and by the visual spread glass that just can distinguish simply the face of injecting, outgoing plane, spread glass structure, spread glass assembly and optoisolator.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of spread glass, this spread glass is a slice spread glass combining in the multi-disc spread glass that the light that is used in spread glass assembly and make to inject is formed as linear polarization, described multi-disc spread glass has different intrinsic polarizing axis directions, and, at least a portion surface of described a slice spread glass, corresponding to described intrinsic polarizing axis direction, has the spectral reflectance rate curve of intrinsic visible region.According to this formation, can utilize catoptrical color to identify this spread glass surface.
According to embodiments of the invention, the difference of the spectral reflectance rate curve of above-mentioned spread glass and the spectral reflectance rate curve that described in other, at least a portion surface of multi-disc spread glass has is counted more than 10 with aberration Δ Eab*.According to this formation, can be by visual identification the catoptrical color from spread glass surface.
In addition, aberration Δ Eab* is by following defined value (Na Gujia letter work " industry color science ", towards storehouse bookstore).
ΔEab*＝[(ΔL*)
2+(Δa*)
2+(Δb*)2]
1/2
＝[(L2*-L1*)
2+(a2*-a1*)
2+(b2*-b1*)2]
1/2
Aberration Δ Eab* in the present invention be by below
ΔEab*＝[(ΔL*)
2+(Δa*)
2+(Δb*)
2]
1/2
＝[(L2*-L1*)2+(a2*-a1*)2+(b2*-b1*)2]
1/2，
Defined value, and
L1*, L2*, a1*, a2*, b1*, b2* represent respectively known two kinds of colors 1,2 with the value of colour system L*, a*, b*.Here, colour system L*, a*, the b* colour system that to be International Commission on Illumination (CIE, Commission Internationale del ' Eclairage) recommended in 1976, with following expression:
L*＝116(Y/Yn)1/3-16
a*＝500[(X/Xn)1/3-(Y/Yn)1/3]
b*＝200[(Y/Yn)1/3-(Z/Zn)1/3]
Wherein, X/Xn, Y/Yn, Z/Zn are all greater than 0.008856
(herein, X=Y (x/y), Y=Y, Z=Y (1-x-y)/y, x, y are x, the y of so-called chromaticity coordinate, Y represents lightness),
About known two kinds of colors 1,2, x, the y of described formula, Y are respectively known, and the value of X1, Y1, Z1, X2, Y2, Z2 is known.
According to embodiments of the invention, the surface of described spread glass be in the face of injecting, outgoing plane of light at least any.According to this formation, can utilize catoptrical color to carry out identified surface.
According to embodiments of the invention, be incident upon the light in the only infrared light district of spread glass.According to this formation, the infrared light that can send middle infrared semiconductor lasers using such as optical communications is controlled.
According to embodiments of the invention, described spread glass has formed the anti-reflective film with multi-layer film structure on surface.According to this formation, can suppress the reflection of light as the wave band of target, thereby can improve spread glass light inject efficiency, penetrate efficiency.In addition, about this anti-reflective film, with regard to guaranteeing transmitted light, it is desirable to reflectivity and be necessary for below 0.6%, more preferably below 0.4%.
According to embodiments of the invention, the reflectivity of the anti-reflective film of described spread glass is below 0.6% under wavelength 1250nm～1650nm.According to this formation, can suppress the reflection of light of wavelength 1250nm～1650nm, thereby can improve spread glass light inject efficiency, penetrate efficiency.
According to embodiments of the invention, the anti-reflective film with multi-layer film structure of described spread glass be by the low-index layer with first refractive rate, with alternately overlapping multilayer and forming of the high refractive index layer with the second refractive index, described the second refractive index is greater than first refractive rate, by selecting the thickness of each layer of low-index layer and high refractive index layer, obtain the spectral reflectance rate curve as target.According to this formation, can reduce the reflectivity of anti-reflective film, thereby can further improve the spread glass that is provided with anti-reflective film light inject efficiency, penetrate efficiency.
The invention provides another kind of spread glass, this spread glass is any a slice spread glass that is combining in the multi-disc spread glass that is used in spread glass structure, forming inject/outgoing plane, the surface of any of described injecting/outgoing plane has the spectral reflectance rate curve of intrinsic visible region, can identify any of the face of injecting, outgoing plane, the difference of described spectral reflectance rate curve and the spectral reflectance rate curve that described in other, at least a portion surface in multi-disc spread glass has is counted more than 10 with aberration Δ Eab*.According to this formation, even if in the case of having used the spread glass that polarizing axis direction is identical, also can be by visual and easily identify catoptrical color.
In addition, aberration Δ Eab* is by following defined value.
ΔEab*＝[(ΔL*)
2+(Δa*)
2+(Δb*)
2]
1/2
＝[(L2*-L1*)
2+(a2*-a1*)
2+(b2*-b1*)
2]
1/2
Wherein, L1*, L2*, a1*, a2*, b1*, b2* represent respectively known color 1, color 2 with the value of colour system L*, a*, b*.
The invention provides a kind of spread glass structure, this spread glass structure comprises inject/outgoing plane, by multiple optical materials with the direction of optical axis intersection on optical laminated and form, the surface of inject/outgoing plane has respectively the spectral reflectance rate curve of intrinsic visible region, can identify the face of injecting, outgoing plane, the difference that these spectral reflectivity Curves show is counted more than 10 with aberration Δ Eab*.According to this formation, can be by visual and easily identify catoptrical color.
In addition, aberration Δ Eab* is by following defined value.
ΔEab*＝[(ΔL*)
2+(Δa*)
2+(Δb*)
2]1/2
＝[(L2*-L1*)
2+(a2*-a1*)
2+(b2*-b1*)
2]1/2
L1*, L2*, a1*, a2*, b1*, b2* represent respectively known color 1, color 2 with the value of colour system L*, a*, b*.Herein, spread glass structure of the present invention comprises inject/outgoing plane as described, by multiple optical materials with the direction of optical axis intersection on optical laminated and form, more particularly, at least at inject/outgoing plane, dispose and there is respectively the axial spread glass of polarisation, even if these spread glasses, in the situation that polarizing axis direction each other may not be identical, also have described intrinsic reflectance curve, and have each other described aberration Δ Eab*.
In addition, spread glass structure is not limited to be configured in and injects/two spread glasses of outgoing plane, for example also can and then add a slice spread glass, two spread glasses, optical laminated and form to sandwich the mode of optical material of garnet film (garnet film) or liquid crystal engine etc.In addition, so-called optical laminated, be to represent by using bonding agent etc. by spread glass or optical material set, or utilize optics gluing or thermal welding that spread glass or optical material are engaged, or use framework etc. mechanically spread glass or optical material to be fixed.
According to embodiments of the invention, at least one of the inject/outgoing plane of above-mentioned spread glass structure has the 1mm of being less than
2cross section, the difference that described spectral reflectance rate curve shows is respectively counted more than 15 with aberration Δ Eab*.According to this formation, even if the inject/outgoing plane of spread glass structure is less, also can be by visual and easily identify the face of injecting, outgoing plane.
According to embodiments of the invention, at least one of above-mentioned inject/outgoing plane of spread glass construction formed the anti-reflective film with multi-layer film structure.According to this formation, can suppress the face of injecting of spread glass structure, the reflection of outgoing plane, thereby can improve light inject efficiency, penetrate efficiency.
According to embodiments of the invention, the anti-reflective film with sandwich construction of above-mentioned spread glass structure is by alternately overlapping multilayer and forming of the high refractive index layer that has the low-index layer of first refractive rate and have the second refractive index, described the second refractive index is greater than first refractive rate, by selecting the thickness of each layer of low-index layer and high refractive index layer, obtain the spectral reflectance rate curve as target.According to this formation, can reduce the reflectivity of anti-reflective film, thereby can further improve the optical element that is provided with anti-reflective film light inject efficiency, penetrate efficiency.
According to embodiments of the invention, the multiple optical materials that form spread glass structure comprise the multi-disc spread glass that polarizing axis direction is different.
The invention provides a kind of spread glass assembly, this spread glass assembly be by the light that there is respectively different polarizing axis directions and make to inject be formed as the multi-disc spread glass of linear polarization and optical material with the direction of optical axis intersection on optical laminated and form, and, at least a portion surface of each spread glass has the spectral reflectance rate curve of intrinsic visible region corresponding to different polarizing axis directions, the difference that these spectral reflectance rate curves show is respectively counted more than 10 with aberration Δ Eab*.According to this formation, can be by visual and easily identify the face of injecting, the outgoing plane of spread glass assembly.
In addition, aberration Δ Eab* is by following defined value.
ΔEab*＝[(ΔL*)
2+(Δa*)
2+(Δb*)
2]
1/2
＝[(L2*-L1*)
2+(a2*-a1*)
2+(b2*-b1*)
2]
1/2
L1*, L2*, a1*, a2*, b1*, b2* represent respectively known color 1, color 2 with the value of colour system L*, a*, b*.
Herein, spread glass assembly of the present invention as described, be by the light that there is respectively different polarizing axis directions and make to inject be formed as the multi-disc spread glass of linear polarization and optical material with the direction of optical axis intersection on optical laminated and form, more particularly, at least two spread glasses are configured in the most surface of this assembly, and the part surface of these spread glasses has the spectral reflectance rate curve of intrinsic visible region corresponding to different polarizing axis directions.These spread glasses in the situation that polarizing axis direction is different each other, intrinsic reflectance curve separately described in having, and there is each other described aberration Δ Eab*.
In addition, spread glass assembly is not limited to be configured in two spread glasses of most surface, for example, also can and then add a slice, two, optical laminated and form to sandwich the mode of optical material of garnet film or liquid crystal engine etc.In addition, so-called optical laminated, be to represent by using bonding agent etc. by spread glass or optical material set, or utilize optics gluing or thermal welding and engage, or mechanically fixedly form by framework etc.
According to embodiments of the invention, in above-mentioned spread glass assembly, multi-disc spread glass has respectively the 1mm of being less than
2size, the difference that spectral reflectance rate curve shows is respectively counted more than 15 with aberration Δ Eab*.According to this formation, even if the inject/outgoing plane of spread glass assembly is less, also can be by visual and easily identify the face of injecting, outgoing plane.
According to embodiments of the invention, in the face of injecting that the surface of described spread glass assembly is light, outgoing plane at least any.According to this formation, can utilize catoptrical color to carry out identified surface.
According to embodiments of the invention, the light that is incident upon spread glass assembly is the light in infrared light district.According to this formation, can utilize spread glass assembly, the infrared light that the middle infrared semiconductor lasers that use such as optical communication are sent is controlled.
According to embodiments of the invention, each surface of described spread glass assembly has formed the anti-reflective film with multi-layer film structure.According to this formation, can suppress the reflection of light as the wave band of target, thereby can improve spread glass assembly light inject efficiency, penetrate efficiency.
According to embodiments of the invention, the reflectivity of the described anti-reflective film of above-mentioned spread glass assembly is below 0.6% under wavelength 1250nm～1650nm.According to this formation, can suppress the reflection of light of wavelength 1250nm～1650nm, thereby can improve spread glass assembly light inject efficiency, penetrate efficiency.
According to embodiments of the invention, the anti-reflective film with sandwich construction of described spread glass assembly be by the low-index layer with first refractive rate, with alternately overlapping multilayer and forming of the high refractive index layer with the second refractive index, described the second refractive index is greater than first refractive rate, by selecting the thickness of each layer of low-index layer and high refractive index layer, obtain the described spectral reflectance rate curve as target.According to this formation, can reduce the reflectivity of anti-reflective film, thereby can further improve the spread glass assembly that is provided with anti-reflective film light inject efficiency, penetrate efficiency.
The invention provides a kind of optoisolator, this optoisolator has carried spread glass structure or spread glass assembly, and this optoisolator has carried multi-disc spread glass.
Compared with prior art, beneficial effect of the present invention:
Spread glass of the present invention: be configured to spectral reflectance rate curve in visible region different corresponding to the direction of the polarizing axis of this spread glass, when light arrives this spread glass and visual when this situation, can see that tone is each other different corresponding to polarizing axis.Thus, for each tone, distribute the direction of polarizing axis just can be distinguished simply, compared with cutting in the past the means of being distinguished, can effectively utilize space, and avoid cutting to produce the problems such as the spread glass yield rate that chip causes is low, cost rising.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the optoisolator 1 of embodiments of the present invention.
Fig. 2 is the structural representation of the anti-reflective film 31 of the first spread glass 3 in the optoisolator 1 of embodiments of the present invention.
Fig. 3 (a), (b) represent the spread glass of the first embodiment of optoisolator 1 of embodiments of the present invention and the figure of the spectral reflectance rate curve of the spread glass of the second embodiment.
Fig. 4 is the reflected light of the first spread glass and the catoptrical color difference table of the second spread glass of the second embodiment that represents optoisolator first embodiment of embodiments of the present invention.
Fig. 5 is the table that represents the thickness of each layer of the anti-reflective film of the spread glass of optoisolator second embodiment of embodiments of the present invention.
Fig. 6 (a), (b) represent the spread glass of optoisolator the first embodiment of embodiments of the present invention and the spectral reflectivity curve map of the spread glass of the 3rd embodiment.
Fig. 7 is the structural representation of the spread glass structure of embodiments of the present invention (the 5th embodiment).
Fig. 8 is the spread glass structure (the 5th embodiment) representing about embodiments of the present invention, with respect to by visual surface and the surface configuration (size) of spread glass of correct response rate and the table of the relation of Δ Eab* at the back side distinguished.
Fig. 9 (a), (b) utilize background technology to obtain the key diagram of spread glass assembly 60 (comparative example).
Figure 10 is the structural drawing of the spread glass assembly 61 of embodiments of the present invention (the 6th embodiment).
Figure 11 (a), (b) are the key diagrams that obtains spread glass assembly 61 in embodiments of the present invention (the 6th embodiment).
Figure 12 is the structural representation of the spread glass assembly (the 7th embodiment: wavelength blocker) that represents embodiments of the present invention.
Embodiment
Below in conjunction with test example and embodiment, the present invention is described in further detail.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.
With reference to Fig. 1～Figure 11, the embodiment example of spread glass of the present invention, spread glass structure, spread glass assembly and optoisolator is described.In addition, member shared in each figure is enclosed to identical symbol.
According to following order, describe.
As shown in Figure 1, the present embodiment has been enumerated a kind of optoisolator 1, this optoisolator 1 is used to isolate the light of near-infrared region, and this optoisolator 1 comprises the first spread glass 3, the second spread glass 4 being used in combination with this spread glass 3, Faraday rotator 2, magnet 91 and magnet 92, described Faraday rotator 2 consists of garnet etc., described the first spread glass 3 and the second spread glass 4 are bonded on the both sides of Faraday rotator 2 take their optical axis as shared mode, now, the polarizing axis of the polarizing axis of the first spread glass 3 and the second spread glass 4 forms 45° angle mutually, described magnet 91 and magnet 92 are for applying magnetic field to Faraday rotator 2, magnet 91 (the N utmost point) and magnet 92 (the S utmost point) are roughly produced to the mode in magnetic field in orthogonal direction with the optical axis with respect to Faraday rotator 2, fixing by fixed component (not indicating in figure).
Herein, the first spread glass 3 is the spread glasses that (for example also this first direction can be called to the direction of 0 °) take polarizing axis as specific first direction, the second spread glass 4 is the spread glasses with following polarizing axis, this polarizing axis is with respect to the polarizing axis of the first spread glass 3, to be the second direction (in the case of being that first direction is called the direction of 0 ° by the direction of the polarizing axis of described the first spread glass 3, this second direction also can be called the direction of 45 °) of 45 °.
The surface of described the first spread glass 3 is provided with anti-reflective film 31, and the surface of described the second spread glass 4 is provided with anti-reflective film 41.As shown in Figure 2, the structural representation of anti-reflective film 31, anti-reflective film 31 is overlapping and form by having the low-index layer 31A of first refractive rate and having the high refractive index layer 31B alternate multiple of the second refractive index, described the second refractive index is greater than first refractive rate, by selecting the thickness of each layer of low-index layer 31A and high refractive index layer 31B, obtain the distribution curve as the reflectivity of target.Anti-reflective film 41 also has the structure identical with described anti-reflective film 31.
Six layers of structure that in Fig. 2, the number of plies of anti-reflective film 31 are made as to even number represent, and conduct has an example of the anti-reflective film of sandwich construction, also can be made as the number of plies fewer than six layers, or be made as than the number of plies more than six layers, and the number of plies also can be odd number.
Herein, the concrete form of spread glass of the present invention is described.
This spread glass refers to possess a slice spread glass that makes the light of injecting be formed as the action effect of linear polarization as described, for spread glass structure described later, spread glass assembly and optoisolator in the situation that, refer to a slice spread glass combining in the multi-disc spread glass using.
And at least a portion surface of this slice spread glass has intrinsic spectral reflectance rate curve corresponding to its polarizing axis direction, below utilize the first embodiment to the three embodiments to describe its concrete form.
[the first embodiment]
At 11mm
2the polarization direction of the first spread glass 3 that comprises copper metal microparticle that × 0.2mm is thick is the one side of 0 °, utilizes ion beam assisted depositing (Ion Beam Assist Deposition, hereinafter referred to as IAD) method, will be by Ta
2o
5layer and SiO
2the anti-reflective film film forming that total that layer alternately forms is 8 layers, the gross thickness of the anti-reflective film of film forming is about 650nm.
This anti-reflective film and the reflection of light rate of the 1250～1650nm wavestrip with respect to using in optical communication are that the broadband (wide band) below 0.3% is corresponding.The spectral reflectance rate curve of anti-reflective film is represented by the dot-and-dash line of Fig. 3 (a), (b) (Fig. 6 (a), (b)).Under the fluorescent light of the catoptrical color of the film obtaining in dust free room, present gold look.
The first spread glass 3 like this and that obtain has and the corresponding intrinsic spectral reflectance rate curve of its polarizing axis direction as described, if the spread glass being used in combination when for spread glass assembly, be that spread glass in the second embodiment described later contrasts as the second spread glass 4, in Fig. 3 (a) of having with second spread glass 4 at least a portion surfaces, (b), the difference of the spectral reflectance rate curve shown in solid line is measured as with aberration Δ Eab* and counts 21.69, as shown in Figure 4.
[the second embodiment]
As another embodiment of spread glass of the present invention, use the 11mm identical with the first embodiment
2the spread glass that × 0.2mm is thick, but its polarizing axis direction is 45 °.In this one side of 45 °, utilize IAD method, will be by Nb
2o
5layer and SiO
2the layer anti-reflective film film forming that amounts to 6 layers that alternately lamination forms.In film design, use commercially available film design software " MACLORD ", film is designed to near reflectivity visible range 460nm in 60% left and right and in the use wavestrip of optical communication, under 1250～1650nm, reflectivity is the film below 0.6%.
Nb
2o
5layer and SiO
2the thickness of laminated meter is about 600nm, as shown in Figure 5.The spectral reflectance rate curve of this anti-reflective film is represented with the solid line of Fig. 3 (a), (b).Under the fluorescent light of the catoptrical color of the film obtaining in dust free room, present blue and white.
The first spread glass 3 like this and that obtain has and the corresponding intrinsic spectral reflectance rate curve of its polarizing axis direction as described, if combining the spread glass using when for spread glass assembly etc., the spread glass in the first described embodiment contrasts as the second spread glass 4,, in Fig. 3 (a) of having with second spread glass 4 at least a portion surfaces, (b), the spectral reflectance rate curve shown in dot-and-dash line contrasts, its difference is measured as with aberration Δ Eab* and counts 21.69, as shown in Figure 4.
[the 3rd embodiment]
At the 11mm of spread glass
2the one side of 45 ° that × 0.2mm is thick, utilizes IAD method, will be by Ta
2o
5layer and SiO
2the anti-reflective film film forming that amounts to 6 layers that layer alternately forms.The spread glass using is identical with the first embodiment and the second embodiment.
In film design, use the software " MACLORD " using in the second embodiment, similarly, film is designed to near reflectivity 460nm up to 60% left and right, and the reflectivity under 1250～1650nm is the film below 0.6%.
Ta
2o
5with SiO
2the thickness of total be about 600nm.The spectral reflectance rate curve of this anti-reflective film represents with the dotted line of Fig. 6 (a), (b).The spectral reflectance rate curve of visible range presents the curve identical with the first spread glass 3 of the second embodiment, under the reflected light of the fluorescent light in dust free room, watches, and presents blue and white.And, with regard to the spectral reflectance rate curve of near-infrared region, obtained the film that has reduced reflectivity with the degree inferior unlike the first embodiment.
So obtain the first spread glass 3 as described, have and the corresponding fixing spectral reflectance rate curve of its polarizing axis direction, if combining the spread glass using when for spread glass assembly, the spread glass in the first described embodiment contrasts as the second spread glass 4,, spectral reflectance rate curve shown in the Fig. 6 (a) having with second spread glass 4 at least a portion surfaces, the dot-and-dash line of (b) contrasts, and its difference is measured as with aberration Δ Eab* and counts 21.21.
[the 4th embodiment]
As a slice spread glass that is combining the multi-disc spread glass using for spread glass structure in the situation that, i.e. the first spread glass 3, is used in the first embodiment at the spread glass of injecting face making; As combining the second spread glass 4 using at outgoing plane, adopt the spread glass of making in the second embodiment.The difference of the spectral reflectance rate curve that the first spread glass 3 of obtaining like this and the second spread glass 4 have is respectively measured as with aberration Δ Eab* counts 21.69, because of this difference, the first spread glass 3 can utilize aberration and be identified as inject face use.
At the spread glass of the first embodiment to the three embodiments, and the anti-reflective film of film forming on the spread glass structure of the 4th embodiment, SiO used
2low-refraction material, is used Nb
2o
5or Ta
2o
5as high index of refraction material, but be not limited thereto, also can use other low-refraction materials (for example, MgF
2) or other high index of refraction materials (for example, TiO
2, LaTiO
3, ZrO
2, HfO
2, WO
3).
[the 5th embodiment]
Below the embodiment of spread glass structure of the present invention is described as the 5th embodiment.
About the premium quality product of optoisolator, 1.5 segment type optoisolators as shown in Figure 7 or be known as the optoisolator of Semi-double type optoisolator.In 1.5 segment type optoisolators 11, assembling the spread glass structure 65 that comprises three spread glasses 30,40,50 and two Faraday rotators 20,21, demonstration is 50dB left and right as the isolation (isolation) of the eliminate optical property of optoisolator, thereby compared with the isolation 30～35dB of the common product optoisolator 1 (as shown in Figure 1) being formed with a slice Faraday rotator by two spread glasses, there is higher characteristic.
Conventionally, in 1.5 segment type optoisolators 11, use the spread glass of 0 ° as the spread glass 30,50 at two ends, use the spread glass of 45 ° as central spread glass 40.If the spread glass structure 65 being built in 1.5 segment type optoisolators 11 is applied to magnetic field inversely, incident light because of central spread glass 40 delustrings (extinction) thus light does not pass through, therefore must be to injecting face and outgoing plane is identified.
Be built in the spread glass structure 65 in 1.5 segment type optoisolators 11, film forming anti-reflective film not on the spread glass 40 of 45 ° of central authorities, in the most surface of the spread glass of 0 ° 30,50 at two ends, namely inject face, outgoing plane film forming anti-reflective film 301,501 respectively.
The size of the face that is applying reflectance coating by sensory test to spread glass structure 65 and the relation of discernible Δ Eab* are investigated.Sensory test carries out by the following: make the size of the face that is applying reflectance coating is made as respectively to 100mm
2, 10mm
2, 1mm
2, 0.5mm
2, the value of Δ Eab* is made as to 10,12.5,15,20 spread glass, under the fluorescent light in dust free room, observe, to check, whether can identify the face of injecting and outgoing plane.The result of sensory test is shown in Fig. 8.In the data on each hurdle of Fig. 8, the denominator of mark represents experimenter's number, and point subrepresentation identifies the experimenter's of the face of injecting and outgoing plane number.
Be built in the face of injecting of the spread glass structure 65 in 1.5 segment type optoisolators 11, the size of outgoing plane is 0.5mm
2, according to this result, judge that Δ Eab* is necessary for more than 15.
Because the Δ Eab* of the anti-reflective film of spread glass of the first embodiment and the anti-reflective film of the spread glass of the second embodiment is 21.69, so as becoming the 11mm of the face of injecting
2the anti-reflective film 301 of film forming in the one side of the spread glass 30 of 0 ° that × 0.2mm is thick, by the anti-reflective film film forming shown in the first embodiment; As the 11mm becoming at outgoing plane
2the anti-reflective film 501 of film forming in the one side of the spread glass 50 of 0 ° that × 0.2mm is thick, by the anti-reflective film film forming shown in the second embodiment.
By described spread glass 30,40,50 and 11mm
2the Faraday rotator 20,21 that × 0.5mm is thick configures according to the order shown in Fig. 7, uses bonding agent by each laminating, thereby produces about 11mm
2the spread glass laminated body that × 1.6mm is thick.
With regard to obtained spread glass laminated body, consider the pre-allowance 0.10mm of cutting while cutting off, with 0.55mm interval, cut off, obtain about 0.45mm
2the spread glass structure 60 that × 1.6mm is thick.Under fluorescent light in dust free room, after the visual face of injecting of observing this spread glass structure 65, outgoing plane, from the reflected light of injecting face, present gold look, on the other hand, reflected light from outgoing plane presents blue and white, can be by the visual face of injecting and the outgoing plane of identifying by the catoptrical color of comparison surface.
[comparative example (conventional example)]
In comparative example, following spread glass assembly 60 (as shown in Figure 1) is described, this spread glass assembly 60 is that the existing method of utilizing effects on surface to put line under is made, and is consisted of two spread glasses 3,4 and a slice Faraday rotator 2.
As at 11mm
2spread glass 3 and the 11mm of 0 ° that × 0.2mm is thick
2the anti-reflective film 31,41 of film forming in the one side separately of the spread glass 4 of 45 ° that × 0.2mm is thick, by the anti-reflective film film forming of the first embodiment.
At commercially available 11mm
2the 11mm of the Faraday rotator 2 that × 0.5mm is thick
2wherein one side, to be configured with the face of the not film forming anti-reflective film 31 of the spread glass 3 of 0 ° mode in opposite directions, and at another side, after being configured with the face of the not film forming anti-reflective film 41 of the spread glass 4 of 45 ° mode in opposite directions, use bonding agent that they are fit together, thereby produce 11mm
2the spread glass laminated body 80 that × about 0.9mm is thick.
Then,, as shown in Fig. 9 (a), (b), cutting off 0.50mm
2afterwards, in order to identify polarization direction, it is the one side of 0 °, and in film forming the one side of 31 sides of the spread glass of 0 ° of anti-reflective film, the pre-allowance 0.10mm of cutting while considering to cut off, inner side at the 0.10mm that cuts off line 70 (center of the thickness of cut-out edge of a knife during cut-out) puts line 75 under (after cut-out compared with unfertile land, the position of line 75 is made as the position of the 0.05mm inner side of counting from one side of outside), the distance of cutting off between line 70 and line 75 is 0.05mm, and adjacent two distances of cutting off between line 70 are 0.60mm.Then, with 0.6mm interval, cut off spread glass laminated body 80, thereby obtain 0.50mm
2the spread glass assembly 60 that × about 0.9mm is thick.
With 0.60mm interval, cutting off 11mm
2spread glass laminated body 80 time, obtaining 18 × 18=324 has the 0.50mm of line 75
2the spread glass assembly 60 that × about 0.9mm is thick.
Under 0 ° of face of spread glass of the spread glass assembly 60 obtaining and the fluorescent light of the reflected light of 45 ° of faces of spread glass in dust free room, all present gold look, thereby if 0 ° of face is not put under to line 75, cannot identify each by visual.
And, in 324 spread glass assemblies 60, confirm to have occurred putting the chip that line produces under at 75 o'clock at 20 ° of faces, thereby certified products are 322.
[the 6th embodiment]
Below the embodiment of spread glass assembly of the present invention is described as the 6th embodiment.
As spread glass, use the 11mm identical with comparative example
2the spread glass 4 that the thick spread glass of 0 ° of × 0.2mm is 3 and 45 °.
After investigating by the sense organ identical with the 5th embodiment tested coating to spread glass assembly 0 ° of face of spread glass of anti-reflective film and the size of 45 ° of faces of spread glass and the relation of discernible Δ Eab*, the result of identification is, be not subject to the axial impact of polarisation of spread glass, and with the coming to the same thing of the 5th embodiment.
Known according to the result of this sense organ test, at the 11mm of the spread glass of 0 ° 3
2one side on the film forming anti-reflective film 31 identical with the first embodiment, at the 11mm of 45 ° of spread glasses 4
2one side on the film forming anti-reflective film 42 (with reference to Figure 10) identical with the second embodiment.
The reflectivity of the blue region of the anti-reflective film 42 of film forming on the spread glass of 45 ° 4 is made as to the anti-reflective film 31 higher than film forming on the spread glass 3 of 0 °, thus by visual come more catoptrical color, and can identify 0 ° of face of spread glass and 45 ° of faces of spread glass.
As described by film forming in one side separately the spread glass 4 of 3 and 45 ° of the spread glasses of 0 ° of anti-reflective film 31,42, with 11mm
2the commercially available Faraday rotator 2 that × 0.5mm is thick, is fitted in the mode identical with comparative example, thereby produces 11mm
2the spread glass laminated body 81 that × about 0.9mm is thick.
Because being configured to the catoptrical color that can identify 0 ° of face of spread glass and 45 ° of faces of spread glass by visual, thus need to be in order to not identify the line (scribe line) of face.Because not needing line, so the cut-out of spread glass laminated body 81 is not to obtain 0.50mm as before
2the cut-out (as shown in Figure 9) at 0.60mm interval of spread glass assembly 60, but as shown in Figure 11, can be to obtain 0.45mm
2the interval of 0.55mm of spread glass assembly 61 cut off.Adjacent two distances of cutting off between line 70 are 0.55mm.
Consider the pre-allowance 0.10mm of cutting while cutting off, with 0.55mm interval, cut off spread glass laminated body 81, thereby obtained 0.45mm
2the spread glass assembly 61 that × about 0.9mm is thick.
After 0 ° of face of the spread glass to spread glass assembly 61 has carried out the assessment identical with the 5th embodiment with the Δ Eab* of 45 ° of faces of spread glass, Δ Eab*=21.52.
Under fluorescent light in dust free room, by visual, observe the rear discovery of this spread glass assembly 61, reflected light from 0 ° of face of spread glass presents gold look, on the other hand, reflected light from 45 ° of faces of spread glass presents blue and white, by visual come the catoptrical color of comparison surface, and can identify the face of injecting and outgoing plane.
By 11mm
2spread glass laminated body 81 with 0.55mm interval, cut off after, obtain the 0.45mm of 20 × 20=400
2the spread glass assembly 61 that × about 0.9mm is thick.
Because omitting the step of line, so the chip not producing because of line, certified products are 400.
Like this, by by anti-reflective films different catoptrical color 31,42 film forming in the one side of the spread glass 4 of 3 and 45 ° of the spread glasses of 0 °, compared with spread glass assembly 60, can be obtained by identical material the spread glass assembly 61 of 400/324=1.24 number doubly, thereby material cost has been saved to 19%.
And, to save the time of line, and solved the problem of the chip producing because of line, yield rate is improved.
[the 7th embodiment]
Below the another embodiment of spread glass assembly of the present invention is described as the 7th embodiment.
The optical communication apparatus that is called wavelength blocker shown in Figure 12, it utilizes liquid crystal technology to control transmission, blocking-up, the equalization of the wavelength of at random selecting in optical fiber.
The lens that separate with the spread glass 35 of inject/emitting side and configure (not indicating in figure), and and then will many optical fiber (not indicating in figure) and lens separate and be configured to row.The light of injecting from optical fiber passes through, after the first spread glass 35, to be converted to the light of a direction of deflection, and is incident upon the lcd segment of liquid crystal engine 25.Liquid crystal engine 25 is by carrying out partly electric control, and can at random change the polarizing angle of injecting light of lcd segment, and has the function of light signal blocking-up, transmission, equalization.By using the wavelength blocker 13 of built-in liquid crystal engine 25, can be controlled in the light of propagating in optical fiber.
With regard to the anti-reflective film of film forming on the two sides at two spread glasses, normally film forming identical anti-reflective film, is therefore difficult to the polarization direction of identifying the spread glass that is built in wavelength blocker by visual.
In the another embodiment of spread glass assembly of the present invention, in the both sides of the thick liquid crystal engine 25 of 3.5mm × 23mm × 20mm, spread glass thick 3mm × 21mm × 0.2mm different polarization direction 35,45 separated and configure, and utilizing framework (not indicating in figure) to grip.On the face of injecting of spread glass 35, outgoing plane, the film forming reflected light identical with the first embodiment presents the anti-reflective film 351 of gold look, and film forming and reflected light present the identical anti-reflective film 451 of the second embodiment of blue and white on the face of injecting of spread glass 45, outgoing plane.
Like this, the color presenting by change the reflected light of anti-reflective film on polarization direction, and can be by the visual polarization direction that identifies spread glass.
[the 8th embodiment]
Below the embodiment of optoisolator of the present invention is described as the 8th embodiment.
The isolation of the optoisolator 11 obtaining is 50dB, injects the color that face, outgoing plane can present by the visual reflected light that identifies the anti-reflective film of film forming on spread glass.
[the 9th embodiment]
Below the another embodiment of optoisolator of the present invention is described as the 9th embodiment.
The isolation of the optoisolator 12 obtaining is 35dB, the color that the polarization direction of plane of polarisation can present by the visual reflected light that identifies the anti-reflective film of film forming on spread glass.
Claims (20)
1. a spread glass, it is a slice spread glass combining in the multi-disc spread glass that the light that is used in spread glass assembly and make to inject is formed as linear polarization, described multi-disc spread glass has different intrinsic polarizing axis directions, it is characterized in that: at least a portion surface of described a slice spread glass, corresponding to described intrinsic polarizing axis direction, has the spectral reflectance rate curve of intrinsic visible region; The difference of described spectral reflectance rate curve and the spectral reflectance rate curve that described in other, at least a portion surface of multi-disc spread glass has is counted more than 10 with aberration △ Eab*, and wherein, aberration △ Eab* is by following defined value:
△Eab*＝[（△L*）
2＋（△a*）
2＋（△b*）
2]
1/2＝[（L2*－L1*）
2＋（a2*－a1*）
2＋（b2*－b1*）
2]
1/2
Wherein, L1*, L2*, a1*, a2*, b1*, b2* represent respectively known color 1, color 2 with the value of colour system L*, a*, b*.
2. spread glass according to claim 1, is characterized in that: described surface be in the face of injecting, outgoing plane of light at least any.
3. spread glass according to claim 1, is characterized in that: described in the light in the only infrared light district that injects.
4. according to the spread glass described in any one in claims 1 to 3, it is characterized in that: on described surface, formed the anti-reflective film with multi-layer film structure.
5. spread glass according to claim 4, is characterized in that: the reflectivity of described anti-reflective film is below 0.6% under wavelength 1250nm～1650nm.
6. spread glass according to claim 4, it is characterized in that: described anti-reflective film is by the low-index layer with first refractive rate, and alternately overlapping multilayer and forming of the high refractive index layer with the second refractive index, described the second refractive index is greater than first refractive rate, by selecting the thickness of each layer of described low-index layer and high refractive index layer, obtain the described spectral reflectance rate curve as target.
7. a spread glass, it is any a slice spread glass that is combining inject/outgoing plane of formation in the multi-disc spread glass that is used in spread glass structure, it is characterized in that: described in any surface of inject/outgoing plane there is the spectral reflectance rate curve of intrinsic visible region, can identify any of the face of injecting, outgoing plane; The difference of described spectral reflectance rate curve and the spectral reflectance rate curve that described in other, at least a portion surface in multi-disc spread glass has is counted more than 10 with aberration △ Eab*, and wherein, aberration △ Eab* is by following defined value:
△Eab*＝[（△L*）
2＋（△a*）
2＋（△b*）
2]
1/2＝[（L2*－L1*）
2＋（a2*－a1*）
2＋（b2*－b1*）
2]
1/2。
8. a spread glass structure, it comprises inject/outgoing plane, by multiple optical materials with the direction of optical axis intersection on optical laminated and form, it is characterized in that: described in the surface of inject/outgoing plane there is respectively the spectral reflectance rate curve of intrinsic visible region, can identify each of the face of injecting, outgoing plane, the difference that these spectral reflectivity Curves show is counted more than 10 with aberration △ Eab*, and wherein, aberration △ Eab* is by following defined value:
△Eab*＝[（△L*）
2＋（△a*）
2＋（△b*）
2]
1/2＝[（L2*－L1*）
2＋（a2*－a1*）
2＋（b2*－b1*）
2]
1/2。
9. spread glass structure according to claim 8, is characterized in that: described at least one of inject/outgoing plane there is the 1mm of being less than
2cross section, the difference that described spectral reflectance rate curve shows is respectively counted more than 15 with aberration △ Eab*.
10. spread glass structure according to claim 8 or claim 9, is characterized in that: described at least one of inject/outgoing plane formed the anti-reflective film with multi-layer film structure.
11. spread glass structures according to claim 10, it is characterized in that: described anti-reflective film be by the low-index layer with first refractive rate, with alternately overlapping multilayer and forming of the high refractive index layer with the second refractive index, shown in the second refractive index be greater than first refractive rate, by selecting the thickness of each layer of described low-index layer and high refractive index layer, obtain the described spectral reflectance rate curve as target.
Spread glass structure 12. according to Claim 8, in 9,11 described in any one, is characterized in that: described multiple optical materials comprise the multi-disc spread glass that polarizing axis direction is different.
13. 1 kinds of spread glass assemblies, it is by having respectively different polarizing axis directions and making the light of injecting be formed as multi-disc spread glass and the optical material of linear polarization, with the direction of optical axis intersection on optical laminated and form, it is characterized in that: at least a portion surface of each spread glass has the spectral reflectance rate curve of intrinsic visible region corresponding to described different polarizing axis direction, the difference that these spectral reflectance rate curves show is respectively counted more than 10 with aberration △ Eab*, wherein, aberration △ Eab* is by following defined value:
△Eab*＝[（△L*）
2＋（△a*）
2＋（△b*）
2]
1/2＝[（L2*－L1*）
2＋（a2*－a1*）
2＋（b2*－b1*）
2]
1/2。
14. spread glass assemblies according to claim 13, is characterized in that: described multi-disc spread glass has respectively the 1mm of being less than
2size, the difference that described spectral reflectance rate curve shows is respectively counted more than 15 with aberration △ Eab*.
15. according to the spread glass assembly described in claim 13 or 14, it is characterized in that: in the face of injecting that described surface is light, outgoing plane at least any.
16. according to the spread glass assembly described in claim 13 or 14, it is characterized in that: described in the light injected be the light in infrared light district.
17. according to the spread glass assembly described in claim 13 or 14, it is characterized in that: described each surface has formed the anti-reflective film with multi-layer film structure.
18. spread glass assemblies according to claim 17, is characterized in that: the reflectivity of described anti-reflective film is below 0.6% under wavelength 1250nm～1650nm.
19. spread glass assemblies according to claim 17, it is characterized in that: described anti-reflective film be by the low-index layer with first refractive rate, with alternately overlapping multilayer and forming of the high refractive index layer with the second refractive index, shown in the second refractive index be greater than first refractive rate, by selecting the thickness of each layer of low-index layer and high refractive index layer, obtain the described spectral reflectance rate curve as target.
20. 1 kinds of optoisolators, is characterized in that: carrying the spread glass structure described in any one or spread glass assembly according to Claim 8 to 19.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-194402 | 2011-09-06 | ||
| JP2011194402A JP2013054323A (en) | 2011-09-06 | 2011-09-06 | Polarizing glass, polarizing glass structure, polarizing glass assembly and optical isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102608690A CN102608690A (en) | 2012-07-25 |
| CN102608690B true CN102608690B (en) | 2014-04-23 |
Family
ID=46526185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210036009.9A Active CN102608690B (en) | 2011-09-06 | 2012-02-17 | Polarization glass, polarization glass structural body, polarization glass assembly and optoisolator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013054323A (en) |
| CN (1) | CN102608690B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139487A (en) * | 1994-11-25 | 1997-01-01 | 株式会社东金 | Method of producing optical isolator |
| CN1251426A (en) * | 1998-08-19 | 2000-04-26 | 富士通株式会社 | Optical device used as optical isolater, and optical amplifier and system including said optical device |
| CN1434327A (en) * | 2002-01-24 | 2003-08-06 | Tdk株式会社 | Farady rotator and optical device comprising same, and antireflection film and optical device comprising same |
| CN1445582A (en) * | 2002-03-14 | 2003-10-01 | Tdk株式会社 | Method for manufacturing optical device and Faraday rotation, optical device and optical communication system |
| CN101939671A (en) * | 2008-04-21 | 2011-01-05 | 豪雅冠得股份有限公司 | Polarizing glass, optical isolator, and method for producing polarizing glass |
-
2011
- 2011-09-06 JP JP2011194402A patent/JP2013054323A/en not_active Withdrawn
-
2012
- 2012-02-17 CN CN201210036009.9A patent/CN102608690B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139487A (en) * | 1994-11-25 | 1997-01-01 | 株式会社东金 | Method of producing optical isolator |
| CN1251426A (en) * | 1998-08-19 | 2000-04-26 | 富士通株式会社 | Optical device used as optical isolater, and optical amplifier and system including said optical device |
| CN1434327A (en) * | 2002-01-24 | 2003-08-06 | Tdk株式会社 | Farady rotator and optical device comprising same, and antireflection film and optical device comprising same |
| CN1445582A (en) * | 2002-03-14 | 2003-10-01 | Tdk株式会社 | Method for manufacturing optical device and Faraday rotation, optical device and optical communication system |
| CN101939671A (en) * | 2008-04-21 | 2011-01-05 | 豪雅冠得股份有限公司 | Polarizing glass, optical isolator, and method for producing polarizing glass |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013054323A (en) | 2013-03-21 |
| CN102608690A (en) | 2012-07-25 |
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