CN105408792B - A kind of method and device interconnected between light waveguide-layer - Google Patents
A kind of method and device interconnected between light waveguide-layer Download PDFInfo
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- CN105408792B CN105408792B CN201480000825.1A CN201480000825A CN105408792B CN 105408792 B CN105408792 B CN 105408792B CN 201480000825 A CN201480000825 A CN 201480000825A CN 105408792 B CN105408792 B CN 105408792B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
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Abstract
The invention provides the method and device interconnected between a kind of light waveguide-layer, between the light waveguide-layer, the device of interconnection includes：Source light waveguide-layer (11), target light waveguide-layer (13) and photon crystal wave-guide (12).One surface of the photon crystal wave-guide (12) is fitted with a surface of the source light waveguide-layer (11), and another surface of the photon crystal wave-guide (12) is fitted with a surface of the target light waveguide-layer (13).Including the first vertical raster coupler (1101) in the source light waveguide-layer (11), in the target light waveguide-layer (13), include the second vertical raster coupler (1301). position of position of first vertical raster coupler (1101) in the source light waveguide-layer (11) with second vertical raster coupler (1301) in the target light waveguide-layer (13) is identical.
Description
Technical field
The present invention relates to the method and device interconnected between optoelectronic areas, more particularly to a kind of light waveguide-layer.
Background technology
With the further development of science and technology, it is mutual that traditional electrical interconnection based on metal wire and dielectric faces metal wire
The even challenge of delay, power consumption and bandwidth so that the limitation of electrical interconnection technology is more and more obvious.At the same time, light network technology
Electrical interconnection bottlenecks can be effectively overcome with its little, small power consumption of delay, with roomy advantage, and are gradually applied to replace electrical interconnection
Various scenes, including interconnecting in chip.
In interconnecting in chip, realize that the typical technical solution of optical signal interconnection in fiber waveguide between layers has following
Several：(1) tapered transmission line using fiber waveguide between layers realizes that optical signal is coupled；(2) technique such as photoetching and etching is utilized
Means make waveguide or the optical device across light waveguide-layer；(3) 3D stacking waveguides are made using note oxygen technique, waveguide is in vertical direction
Upper projection, realizes the coupling between fiber waveguide and layer；(4) using the multiple of distribution in fiber waveguide between layers vertical direction
Micro-loop realizes that fiber waveguide is coupled between layers.
Stated during realizing that light waveguide-layer is interconnected with layer in realization, inventor has found at least exist such as in prior art
Lower problem：Above-mentioned four kinds of schemes all do not account for the problem for polarizing, when optical signal is processed in light waveguide-layer, can significantly
Reduce the job stability of Polarization-Sensitive device in light waveguide-layer, and then reduce the efficiency that system processes optical signal.
Content of the invention
The method and device interconnected between a kind of light waveguide-layer is embodiments provided, in order to improve in light waveguide-layer partially
Shake the job stability of Sensitive Apparatus, and then improves the efficiency that system processes optical signal.
For reaching above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
In a first aspect, the device interconnected between a kind of light waveguide-layer is embodiments provided, including：Source light waveguide-layer,
Target light waveguide-layer, photon crystal wave-guide；One surface of photon crystal wave-guide is fitted with a surface of source light waveguide-layer, and
Fit with a surface of target light waveguide-layer on another surface of photon crystal wave-guide；Include in the light waveguide-layer of source：First hangs down
Straight grating coupler；Include in target light waveguide-layer：Second vertical raster coupler；First vertical raster coupler is in source light wave
Position of the position in conducting shell with the second vertical raster coupler in target light waveguide-layer is identical.
In the first possible implementation of first aspect, the equivalent core diameter of photon crystal wave-guide and first hangs down
The spot diameter coupling of straight grating coupler, and mate with the spot diameter of the second vertical raster coupler.
In conjunction with the first possible implementation of first aspect or first aspect, second in first aspect is possible
In implementation, photon crystal wave-guide includes：Refractive index light-guiding photonic crystal waveguide, band gap leading type photon crystal wave-guide；
The waveguide of refractive index light-guiding photonic crystal is guide-lighting with the cross section structure of target light waveguide-layer and refractive index parallel to source light waveguide-layer
The structure of the cross section of type photonic crystal fiber is identical；Band gap leading type photon crystal wave-guide is parallel to source light waveguide-layer and target
The cross section structure of light waveguide-layer is identical with the structure of the cross section of band gap leading type photonic crystal fiber.
In conjunction with first aspect or first or second possible implementation of first aspect, first aspect the third
In possible implementation, the first vertical raster coupler includes：One-dimensional Vertical grating coupler, the coupling of second vertical grating
Device；Second vertical raster coupler includes：One-dimensional Vertical grating coupler, second vertical grating coupler.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect
In, One-dimensional Vertical grating coupler includes：Etching light guides the grating of grooved；Or, tiltedly carve grating；Or, balzed grating,；Or
Person, one-dimensional chirp grating；Second vertical grating coupler includes：Two-dimentional chirp grating.
In conjunction with first aspect or first to fourth any one possible implementation of first aspect, the of first aspect
In five kinds of possible implementations, source light waveguide-layer also includes：First modulator, and/or the first detector, and/or first can
Become attenuator, and/or the first shunt, and/or the first photoswitch；Target light waveguide-layer also includes：Second modulator, and/or
Second detector, and/or the second variable attenuator, and/or the second shunt, and/or the second photoswitch.
Second aspect, embodiments provides a kind of method interconnected between light waveguide-layer, and methods described is applied to wrap
Include the device of source light waveguide-layer, target light waveguide-layer and photon crystal wave-guide；Wherein, a surface of photon crystal wave-guide with
One surface laminating of source light waveguide-layer, and a surface patch of another surface of photon crystal wave-guide and target light waveguide-layer
Close；Include in the light waveguide-layer of source：First vertical raster coupler；Include in target light waveguide-layer：Second vertical raster coupler；
Position of the first vertical raster coupler in the light waveguide-layer of source is with the second vertical raster coupler in target light waveguide-layer
Position is identical；The method includes：By the first vertical raster coupler receive the transmission of source light waveguide-layer come optical signal, and by light
Transmit to photon crystal wave-guide after changing 90 degree the direction of propagation of signal；Will be from the first vertical raster by photon crystal wave-guide
The optical signal transmission that coupler is received is to the second vertical raster coupler；By the second vertical raster coupler from photonic crystal ripple
Receipts optical signal is connected, and is transmitted to target light waveguide-layer after the direction of propagation of optical signal is changed 90 degree.
In the first possible implementation of second aspect, the method also includes：Adjusted by photon crystal wave-guide
Birefringence, and/or the light of the polarization, and/or optical signal of the phase place, and/or optical signal of the light intensity of optical signal, and/or optical signal
The dispersion flattene of signal.
In conjunction with the first possible implementation of second aspect or second aspect, second in second aspect is possible
In implementation, source light waveguide-layer also includes：First modulator, and/or the first detector, and/or the first variable attenuator,
And/or first shunt, and/or the first photoswitch；Target light waveguide-layer also includes：Second modulator, and/or the second detection
Device, and/or the second variable attenuator, and/or the second shunt, and/or the second photoswitch；Accordingly, the method also includes：Logical
The first modulator that crosses in the light waveguide-layer of source, and/or the first detector, and/or the first variable attenuator, and/or the first branch
Device, and/or the first photoswitch carry out the first process to optical signal；By the second modulator in target light waveguide-layer, and/or
Two detectors, and/or the second variable attenuator, and/or the second shunt, and/or the second photoswitch will be from the second vertical rasters
The optical signal that coupler is received carries out second processing.
The method and device interconnected between a kind of light waveguide-layer is embodiments provided, described device includes：Source light wave
Conducting shell, target light waveguide-layer, photon crystal wave-guide；One surface of photon crystal wave-guide and a surface patch of source light waveguide-layer
Close, and another surface of photon crystal wave-guide is fitted with a surface of target light waveguide-layer；Include in the light waveguide-layer of source：The
One vertical raster coupler；Include in target light waveguide-layer：Second vertical raster coupler；First vertical raster coupler is in source
Position of the position in light waveguide-layer with the second vertical raster coupler in target light waveguide-layer is identical；First vertical raster coupling
Clutch, for receiving the optical signal that light waveguide-layer transmission in source comes, and will optical signal the direction of propagation change 90 degree after transmit to
Photon crystal wave-guide；Photon crystal wave-guide, for hanging down the optical signal transmission received from the first vertical raster coupler to second
Straight grating coupler；Second vertical raster coupler, for receiving optical signal, and the propagation by optical signal from photon crystal wave-guide
Transmit to target light waveguide-layer after changing 90 degree in direction.So, due to make use of the polarization of vertical raster coupler related special
Property achieves the single polarization of optical signal in a light waveguide-layer, or the list of the regional optical signal in a light waveguide-layer
One polarization, improves the job stability of Polarization-Sensitive device in light waveguide-layer, and then improves the efficiency that system processes optical signal.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to embodiment or description of the prior art in
The required accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of the device interconnected between a kind of light waveguide-layer provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of One-dimensional Vertical grating coupler provided in an embodiment of the present invention；
Fig. 3 is the structural representation of another kind of One-dimensional Vertical grating coupler provided in an embodiment of the present invention；
Fig. 4 is the structural representation of another kind of One-dimensional Vertical grating coupler provided in an embodiment of the present invention；
Fig. 5 is the structural representation of another kind of One-dimensional Vertical grating coupler provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of second vertical grating coupler provided in an embodiment of the present invention；
Fig. 7 is a kind of cross-sectional structure schematic diagram of photon crystal wave-guide provided in an embodiment of the present invention；
Fig. 8 is the schematic flow sheet of the method interconnected between a kind of light waveguide-layer provided in an embodiment of the present invention；
Fig. 9 is the path schematic diagram that a kind of optical signal provided in an embodiment of the present invention is transmitted between light waveguide-layer.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme carry out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiment.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The device interconnected between a kind of light waveguide-layer is embodiments provided, as shown in figure 1, including：Source light waveguide-layer
11st, photon crystal wave-guide 12, target light waveguide-layer 13.
Wherein, a surface of photon crystal wave-guide 12 is fitted with a surface of source light waveguide-layer 11, and photonic crystal
Fit with a surface of target light waveguide-layer 13 on another surface of waveguide 12；Include in source light waveguide-layer 11：First is vertical
Grating coupler 1101；Include in target light waveguide-layer 13：Second vertical raster coupler 1301；First vertical raster coupler
Position phase of 1101 positions in source light waveguide-layer 11 with the second vertical raster coupler 1301 in target light waveguide-layer 13
With.
Here, the light waveguide-layer for sending optical signal is defined as source light waveguide-layer 11, receives the light waveguide-layer of optical signal
It is defined as target light waveguide-layer 13.When needing to carry out each interlayer of fiber waveguide to carry out optical signal transmission, source light waveguide-layer 11 passes through
In layer, light path is selected at optical signal transmission to the first vertical raster coupler 1101, and the first vertical raster coupler 1101 should
The direction of propagation of optical signal changes 90 degree, and optical signal is coupled in photon crystal wave-guide 12, and photon crystal wave-guide 12 is by light
To the second vertical coupler, the second vertical coupler changes the direction of propagation of the optical signal after 90 degree to signal transmission again,
Optical signal transmission will be changed into target light waveguide-layer 13, be so achieved that optical signal is transmitted to target light from source light waveguide-layer 11
Ducting layer 13.Below the purposes of the various pieces of the device is done respectively to introduce.
First vertical raster coupler 1101, for receiving the optical signal that the transmission of source light waveguide-layer 11 comes, and by optical signal
The direction of propagation change 90 degree after transmit to photon crystal wave-guide 12.
It should be noted that the first vertical raster coupler 1101 can be One-dimensional Vertical grating coupler, or
Second vertical grating coupler.
Further, when the first vertical raster coupler 1101 is One-dimensional Vertical grating coupler, specific configuration includes
Several below：The first, etches the grating that light guides grooved, as shown in Fig. 2 coupling loss now is about 1.87dB；Second
Kind, grating is carved tiltedly, as shown in figure 3, coupling loss now is about 1.2dB；The third, balzed grating, as shown in figure 4, now
Coupling loss be about 1.2dB；4th kind, one-dimensional chirp grating, as shown in figure 5, coupling loss now is about 2.21dB.When
When first vertical raster coupler 1101 is second vertical grating coupler, specific configuration can be two-dimentional chirp grating, such as Fig. 6
Shown, coupling loss now is about 5.2dB.Above-mentioned merely provide 1101 possible several realities of the first vertical raster coupler
Existing method, but above-mentioned implementation method is not limited to when actually realizing, concrete for the first vertical raster coupler 1101
Implementation method, the present invention are not limited.
It should be noted that when the first vertical raster coupler 1101 is One-dimensional Vertical grating coupler, due to grating
The characteristic of coupler, it is possible to so that being single polarization by the optical signal of the grating coupler, the optical signal is passed through photon
Crystal waveguide 12 is transmitted to the second vertical raster coupler 1301, now as the second vertical raster coupler 1301 is received
Optical signal be also single polarization, so through the second vertical raster coupler 1301 deflect 90 degree after optical signal remain
Single polarization, that is to say, that the polarization angle of the optical signal in target light waveguide-layer 13 is all identical, that is, achieve single polarization；
When the first vertical raster coupler 1101 is second vertical grating coupler, due to the characteristic of two-dimensional grating coupler, so that it may
So that there was only two kinds of polarization angles by the optical signal of the second vertical grating coupler, the optical signal is passed through photonic crystal
Waveguide 12 is transmitted to the second vertical raster coupler 1301, now due to light that the second vertical raster coupler 1301 is received
Signal has two kinds of polarization angles, so the optical signal after deflecting 90 degree through the second vertical raster coupler 1301 still has two kinds
Polarization angle, and it is divided into two points by the optical signal after the second vertical raster coupler 1301 according to two kinds of polarization angles
Not Ju You single polarization angle optical signal, two optical signals for being respectively provided with single polarization angle are in target light waveguide-layer 13
It is respectively processed, there is single polarization angle to the region that individual each optical signal is processed respectively, that is, achieves zonal single
Polarization.
It should be noted that make the first vertical raster coupler 1101 material can be monocrystalline silicon, or
III-V material, can also be guide-lighting polymer, the invention is not limited in this regard.
Photon crystal wave-guide 12, for hanging down the optical signal transmission received from the first vertical raster coupler 1101 to second
Straight grating coupler 1301.
Further, the equivalent core diameter of photon crystal wave-guide 12 is straight with the hot spot of the first vertical raster coupler 1101
Footpath is mated, and mates with the spot diameter of the second vertical raster coupler 1301.
It should be noted that above-mentioned coupling means the equivalent core diameter approximately equal of photon crystal wave-guide 12 and not
Less than the spot diameter of the first vertical raster coupler 1101, while the equivalent core diameter approximately equal of photon crystal wave-guide 12
And the spot diameter not less than the first vertical raster coupler 1101.Generally, the first vertical raster coupler 1101
Spot diameter is equal with the spot diameter of the second vertical raster coupler 1301.
It should be noted that photon crystal wave-guide 12 has many advantages for other waveguides.First, phase
Four kinds of schemes in for background technology, photon crystal wave-guide 12 can be by the ripe semiconductors such as the growth of standard, etching
Technique realization, thus low have the advantages that complex manufacturing technology degree；Secondly as the special construction of photon crystal wave-guide 12, makes
Loss very little of the optical signal in photon crystal wave-guide 12 is obtained, so with good light conductivity, and when a light wave
When having multiple vertical raster couplers for closing on to need to be coupled in conducting shell, photon crystal wave-guide 12 can independently collect each
Optical signal, it is to avoid produce interference between each optical signal；Finally, due to photon crystal wave-guide 12 can be transmitted with endless single mode,
Mode field area is adjustable, dispersion-tunable, is very beneficial for dispersion flattene, and also can ensure that the polarization property of optical signal.
Further, photon crystal wave-guide 12 includes：Refractive index light-guiding photonic crystal waveguide 12, band gap leading type photon
Crystal waveguide 12.Refractive index light-guiding photonic crystal waveguide 12 is parallel to source light waveguide-layer 11 and the section of target light waveguide-layer 13
Structure is identical with the structure of the cross section of refractive index light-guiding photonic crystal fiber；Band gap leading type photon crystal wave-guide 12 is parallel
Knot in cross section structure of the source light waveguide-layer 11 with target light waveguide-layer 13 with the cross section of band gap leading type photonic crystal fiber
Structure is identical.
It should be noted that black portions are the sky after being etched in the cross section of photon crystal wave-guide 12 shown in Fig. 7
Pore, or black portions be dielectric rod.The structure of airport or dielectric rod in photon crystal wave-guide 12 as shown in Figure 7
Can be equilateral triangle as shown in Figure 7, or square.For airport or medium in photon crystal wave-guide 12
The concrete structure of rod, the present invention are without limitation.Refractive-index-guiding type can work as Fig. 7 with identical with band gap leading type structure chart
In black portions when representing dielectric rod, the figure shows the cross section of refractive index light-guiding photonic crystal waveguide；When black in Fig. 7
When color part represents airport, the cross section of band gap leading type photon crystal wave-guide is the figure shows.
It should be noted that the material for making photon crystal wave-guide 12 can be monocrystalline silicon, or iii-v material
Material, can also be guide-lighting polymer, the invention is not limited in this regard.
Second vertical raster coupler 1301, for receiving optical signal, and the biography by optical signal from photon crystal wave-guide 12
Broadcast after direction changes 90 degree and transmit to target light waveguide-layer 13.
Second vertical raster coupler 1301 can be One-dimensional Vertical grating coupler, or second vertical grating coupling
Clutch.Specifically, the above-mentioned description to the first vertical raster coupler 1101 is referred to, is will not be described here.
Further, source light waveguide-layer 11 also includes：First modulator, and/or the first detector, and/or first variable
Attenuator, and/or the first shunt, and/or the first photoswitch；Target light waveguide-layer 13 also includes：Second modulator, and/or
Second detector, and/or the second variable attenuator, and/or the second shunt, and/or the second photoswitch.
It should be noted that above-mentioned simply carried out with 13 device that may be present of target light waveguide-layer to source light waveguide-layer 11
Citing, for source light waveguide-layer 11 and the in esse concrete device in target light waveguide-layer 13, the present invention is not limited to this
System.
Now, source light waveguide-layer 11, for declining by the first modulator, and/or the first detector, and/or first are variable
Subtracting device, and/or the first shunt, and/or the first photoswitch carries out the first process to optical signal.
Photon crystal wave-guide 12, is additionally operable to adjust the light intensity of optical signal, and/or the phase place of optical signal, and/or optical signal
Polarization, and/or birefringence, and/or the dispersion flattene of optical signal of optical signal.
It should be noted that the structure for adjusting photon crystal wave-guide 12 can be passed through, such as airport or dielectric rod
Arrangement, after airport, diameter of dielectric rod etc. is realizing the adjustment to optical signal.
It should be noted that photon crystal wave-guide 12 can only be adjusted to the essential information of optical signal, light is not changed
The information carried in signal, that is to say, that the information to carrying in optical signal is not processed.
Target light waveguide-layer 13, for by the second modulator, and/or the second detector, and/or the second variable attenuation
The optical signal received from the second vertical raster coupler 1301 is entered by device, and/or the second shunt, and/or the second photoswitch
Row second processing.
The device interconnected between a kind of light waveguide-layer is embodiments provided, including：Source light waveguide-layer, target fiber waveguide
Layer, photon crystal wave-guide；One surface of photon crystal wave-guide is fitted with a surface of source light waveguide-layer, and photonic crystal ripple
Fit with a surface of target light waveguide-layer on another surface that leads；Include in the light waveguide-layer of source：First vertical raster is coupled
Device；Include in target light waveguide-layer：Second vertical raster coupler；Position of the first vertical raster coupler in the light waveguide-layer of source
The position that puts with the second vertical raster coupler in target light waveguide-layer is identical；First vertical raster coupler, for receiving
The optical signal that source light waveguide-layer transmission comes, and transmit to photon crystal wave-guide after the direction of propagation of optical signal is changed 90 degree；
Photon crystal wave-guide, for the optical signal transmission that will receive from the first vertical raster coupler to the second vertical raster coupler；
The direction of propagation of optical signal for receiving optical signal from photon crystal wave-guide, and is changed 90 by the second vertical raster coupler
Transmit after degree to target light waveguide-layer.So, due to make use of the polarization dependent behavior of vertical raster coupler to achieve one
The single polarization of the regional optical signal in individual light waveguide-layer in the single polarization of optical signal, or a light waveguide-layer, improves
The job stability of Polarization-Sensitive device in light waveguide-layer, and then improve the efficiency that system processes optical signal.
A kind of method interconnected between light waveguide-layer is embodiments provided, the method is applied to include source fiber waveguide
The device of layer, target light waveguide-layer and photon crystal wave-guide.Wherein, a surface of photon crystal wave-guide and source light waveguide-layer
The laminating of surface, and another surface of photon crystal wave-guide fitted with a surface of target light waveguide-layer；Source light wave
Include in conducting shell：First vertical raster coupler；Include in target light waveguide-layer：Second vertical raster coupler；First is vertical
Position of position of the grating coupler in the light waveguide-layer of source with the second vertical raster coupler in target light waveguide-layer is identical.
As shown in figure 8, methods described includes：
801st, by the first vertical raster coupler receive the transmission of source light waveguide-layer come optical signal, and the biography by optical signal
Broadcast after direction changes 90 degree and transmit to photon crystal wave-guide.
802nd, will be vertical to second for the optical signal transmission received from the first vertical raster coupler by photon crystal wave-guide
Grating coupler.
803rd, optical signal, and the propagation side by optical signal are received from photon crystal wave-guide by the second vertical raster coupler
Transmit to target light waveguide-layer to after changing 90 degree.
It should be noted that Fig. 9 is represented in the transmission path for executing optical signal according to step 801-803.
Further, in execution step 802, the method also includes：The light that optical signal is adjusted by photon crystal wave-guide
The birefringence, and/or the dispersion of optical signal of strong, and/or the phase place of optical signal, and/or the polarization of optical signal, and/or optical signal
Flat.
Further, source light waveguide-layer also includes：First modulator, and/or the first detector, and/or first variable decline
Subtract device, and/or the first shunt, and/or the first photoswitch；Target light waveguide-layer also includes：Second modulator, and/or second
Detector, and/or the second variable attenuator, and/or the second shunt, and/or the second photoswitch.
Accordingly, before step 801, the method also includes：By the first modulator in the light waveguide-layer of source, and/or
First detector, and/or the first variable attenuator, and/or the first shunt, and/or the first photoswitch carry out to optical signal
One is processed.
After step 803, the method also includes：Visited by the second modulator in target light waveguide-layer, and/or second
Survey device, and/or the second variable attenuator, and/or the second shunt, and/or the second photoswitch will be coupled from the second vertical raster
The optical signal that device is received carries out the second processing.
A kind of method interconnected between light waveguide-layer is embodiments provided, including：First vertical raster coupler connects
The optical signal that the light waveguide-layer transmission of receipts source comes, and transmit to photonic crystal ripple after the direction of propagation of optical signal is changed 90 degree
Lead；Photon crystal wave-guide is by the optical signal transmission received from the first vertical raster coupler to the second vertical raster coupler；The
Two vertical raster couplers receive optical signal from photon crystal wave-guide, and transmit after the direction of propagation of optical signal is changed 90 degree
To target light waveguide-layer.So, due to make use of the polarization dependent behavior of vertical raster coupler to achieve in a fiber waveguide
The single polarization of optical signal in layer, or the single polarization of the regional optical signal in a light waveguide-layer, improve fiber waveguide
The job stability of Polarization-Sensitive device in layer, and then improve the efficiency that system processes optical signal.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematic, for example, the unit
Divide, only a kind of division of logic function can have other dividing mode, for example multiple units or component when actually realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or not execute.Another, shown or
The coupling each other for discussing or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit that illustrates as separating component can be or may not be physically separate, aobvious as unit
The part for showing can be or may not be physical location, you can be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that the independent physics of unit includes, it is also possible to which two or more units are integrated in a unit.
Finally it should be noted that：Above example only in order to technical scheme to be described, rather than a limitation；Although
With reference to the foregoing embodiments the present invention has been described in detail, it will be understood by those within the art that：Which still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. the device for interconnecting between a kind of light waveguide-layer, it is characterised in that include：Source light waveguide-layer, target light waveguide-layer, photon are brilliant
Bulk wave is led；One surface of the photon crystal wave-guide is fitted with a surface of the source light waveguide-layer, and the photon is brilliant
Fit with a surface of the target light waveguide-layer on another surface that bulk wave is led；Include in the source light waveguide-layer：First
Vertical raster coupler；Include in the target light waveguide-layer：Second vertical raster coupler；The first vertical raster coupling
Position of position of the device in the source light waveguide-layer with the second vertical raster coupler in the target light waveguide-layer
Identical；The source light waveguide-layer is the light waveguide-layer for sending optical signal；The target light waveguide-layer is the light wave for receiving optical signal
Conducting shell.
2. device according to claim 1, it is characterised in that the equivalent core diameter of the photon crystal wave-guide with described
The spot diameter coupling of the first vertical raster coupler, and mate with the spot diameter of the second vertical raster coupler.
3. device according to claim 1 and 2, it is characterised in that the photon crystal wave-guide includes：Refractive index light-conducting type
Photon crystal wave-guide, band gap leading type photon crystal wave-guide；Refractive index light-guiding photonic crystal waveguide is parallel to the source
The structure of the cross section structure of light waveguide-layer and the target light waveguide-layer and the cross section of refractive index light-guiding photonic crystal fiber
Identical；Tie in section of the band gap leading type photon crystal wave-guide parallel to the source light waveguide-layer with the target light waveguide-layer
Structure is identical with the structure of the cross section of band gap leading type photonic crystal fiber.
4. device according to claim 1 and 2, it is characterised in that
The first vertical raster coupler includes：One-dimensional Vertical grating coupler, second vertical grating coupler；
The second vertical raster coupler includes：One-dimensional Vertical grating coupler, second vertical grating coupler.
5. device according to claim 4, it is characterised in that
The One-dimensional Vertical grating coupler includes：Etching light guides the grating of grooved；Or, tiltedly carve grating；Or, glare
Grid；Or, one-dimensional chirp grating；
The second vertical grating coupler includes：Two-dimentional chirp grating.
6. the device according to 1,2,5 any one of claim, it is characterised in that the source light waveguide-layer also includes：First
Modulator, and/or the first detector, and/or the first variable attenuator, and/or the first shunt, and/or the first photoswitch；
The target light waveguide-layer also includes：Second modulator, and/or the second detector, and/or the second variable attenuator and/
Or second shunt, and/or the second photoswitch.
7. a kind of method for interconnecting between light waveguide-layer, it is characterised in that methods described is applied to include source light waveguide-layer, target light
Ducting layer and the device of photon crystal wave-guide；Wherein, a surface of the photon crystal wave-guide and the source light waveguide-layer
One surface is fitted, and another surface of the photon crystal wave-guide is fitted with a surface of the target light waveguide-layer；
Include in the source light waveguide-layer：First vertical raster coupler；Include in the target light waveguide-layer：Second vertical raster coupling
Clutch；Position of the first vertical raster coupler in the source light waveguide-layer is existed with the second vertical raster coupler
Position in the target light waveguide-layer is identical；The source light waveguide-layer is the light waveguide-layer for sending optical signal；The target light
Ducting layer is the light waveguide-layer for receiving optical signal；Methods described includes：
By the first vertical raster coupler receive source light waveguide-layer transmission come optical signal, and by the optical signal
The direction of propagation change 90 degree after transmit to the photon crystal wave-guide；
By the photon crystal wave-guide by the optical signal transmission received from the first vertical raster coupler to described
Second vertical raster coupler；
The optical signal is received from the photon crystal wave-guide by the second vertical raster coupler, and by the optical signal
The direction of propagation change 90 degree after transmit to the target light waveguide-layer.
8. method according to claim 7, it is characterised in that methods described also includes：By the photon crystal wave-guide
Adjust the polarization, and/or the light of the light intensity of the optical signal, and/or the phase place of the optical signal, and/or the optical signal
The birefringence of signal, and/or the dispersion flattene of the optical signal.
9. the method according to claim 7 or 8, it is characterised in that the source light waveguide-layer also includes：First modulator,
And/or first detector, and/or the first variable attenuator, and/or the first shunt, and/or the first photoswitch；The target
Light waveguide-layer also includes：Second modulator, and/or the second detector, and/or the second variable attenuator, and/or the second branch
Device, and/or the second photoswitch；
Accordingly, methods described also includes：
First modulator, and/or first detector, and/or described first in by the source light waveguide-layer can
Becoming attenuator, and/or first shunt, and/or first photoswitch carries out the first process to the optical signal；
Second modulator, and/or second detector, and/or described second in by the target light waveguide-layer
Variable attenuator, and/or second shunt, and/or second photoswitch will be from the second vertical raster couplers
The optical signal for receiving carries out second processing.
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| PCT/CN2014/076518 WO2015165049A1 (en) | 2014-04-29 | 2014-04-29 | Method and apparatus for interconnection of optical waveguide layers |
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| CN105408792B true CN105408792B (en) | 2017-03-15 |
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| CN101666889A (en) * | 2009-10-15 | 2010-03-10 | 上海交通大学 | Photonic crystal light guide plate with polarization function |
| CN101699152A (en) * | 2009-11-16 | 2010-04-28 | 上海交通大学 | Two-dimensional metallic photonic crystal-based light guide plate with polarization function |
| CN101982796A (en) * | 2010-09-15 | 2011-03-02 | 中国科学院半导体研究所 | Silicon-on-insulator waveguide grating coupler and manufacturing method thereof |
| CN102016672A (en) * | 2008-05-07 | 2011-04-13 | 惠普开发有限公司 | Optical engine for point-to-point communications |
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| GB0208255D0 (en) * | 2002-04-10 | 2002-05-22 | Imec Inter Uni Micro Electr | Photonic crystal based fiber-to-waveguide coupler for polarisation independent photonic integrated circuits |
| US7432649B2 (en) * | 2005-02-22 | 2008-10-07 | Corning, Incorporated | Coupled waveguides for light extraction |
| JP4385137B2 (en) * | 2006-08-28 | 2009-12-16 | 国立大学法人京都大学 | Polarization-independent two-dimensional photonic crystal multiplexer / demultiplexer |
| CN101696785B (en) * | 2009-11-16 | 2011-01-05 | 上海交通大学 | Light guide plate with polarization function based on one-dimensional metal photon crystals |
| CN101882955B (en) * | 2010-04-26 | 2013-04-17 | 华为技术有限公司 | Optical back plate interconnection system and communication equipment |
| CN102809782B (en) * | 2012-08-15 | 2013-12-25 | 深圳大学 | Three-dimensional polarization beam splitter based on two-dimensional photonic crystal sheets |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102016672A (en) * | 2008-05-07 | 2011-04-13 | 惠普开发有限公司 | Optical engine for point-to-point communications |
| CN101666889A (en) * | 2009-10-15 | 2010-03-10 | 上海交通大学 | Photonic crystal light guide plate with polarization function |
| CN101699152A (en) * | 2009-11-16 | 2010-04-28 | 上海交通大学 | Two-dimensional metallic photonic crystal-based light guide plate with polarization function |
| CN101982796A (en) * | 2010-09-15 | 2011-03-02 | 中国科学院半导体研究所 | Silicon-on-insulator waveguide grating coupler and manufacturing method thereof |
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