WO2016008114A1 - 模斑转换器以及用于光传导的装置 - Google Patents
模斑转换器以及用于光传导的装置 Download PDFInfo
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- WO2016008114A1 WO2016008114A1 PCT/CN2014/082308 CN2014082308W WO2016008114A1 WO 2016008114 A1 WO2016008114 A1 WO 2016008114A1 CN 2014082308 W CN2014082308 W CN 2014082308W WO 2016008114 A1 WO2016008114 A1 WO 2016008114A1
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- kerf
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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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1228—Tapered waveguides, e.g. integrated spot-size transformers
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/125—Bends, branchings or intersections
-
- 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
- G02B6/26—Optical coupling means
- G02B6/30—Optical coupling means for use between fibre and thin-film device
- G02B6/305—Optical coupling means for use between fibre and thin-film device and having an integrated mode-size expanding section, e.g. tapered waveguide
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
- G02B2006/121—Channel; buried or the like
Definitions
- Embodiments of the present invention relate to the field of optical communication technologies, and, more particularly, to a stencil transducer and a device for light transmission. Background technique
- the optical waveguide can be a silicon-based photonic integrated circuit (PIC) chip.
- PIC photonic integrated circuit
- the optical signal needs to be coupled from a single mode fiber to a silicon based PIC chip.
- the cross-sectional dimensions of silicon-based PIC chips are on the order of submicron, while the diameters of common single-mode fibers are on the order of micrometers or even ten micrometers, that is, the cross-sectional dimensions of silicon-based PIC chips are smaller than those of ordinary single-mode fibers.
- the core diameter is much smaller.
- the refractive index of the silicon waveguide core layer in the silicon-based PIC chip is relatively high. That is to say, the die size and the effective refractive index between the silicon-based PIC chip and the ordinary single-mode fiber are mismatched, and this mode field mismatch causes a large coupling loss between the two.
- optical waveguide and the fiber are also very difficult, and the end-to-end coupling loss between the two may even be greater than 26 dB.
- the optical input and light output issues of silicon-based PIC chips are a serious challenge.
- end face coupling is to design and fabricate a variogram converter at the edge of the silicon-based PIC chip. It can also be understood as adding a plaque converter between the optical waveguide and the optical fiber.
- the stencil in the variogram converter is coupled to the mode field in the external single mode fiber and is also capable of changing the size of the stencil in the stencil converter.
- the commonly used stencil converters are: forward tapered smear converter, reverse cone stencil converter, multi-stage cone stencil converter, multi-waveguide stencil converter and three-dimensional cone mode Spot converters, etc.
- forward tapered smear converter reverse cone stencil converter
- multi-stage cone stencil converter multi-waveguide stencil converter
- three-dimensional cone mode Spot converters etc.
- Embodiments of the present invention provide a scalar converter capable of reducing coupling loss between an optical waveguide and an optical fiber.
- a plaque converter is provided, the kerf converter comprising: a substrate layer;
- first cover layer disposed above the substrate layer, the first cover layer being coated with a first material; an isolation layer disposed between the substrate layer and the first cover layer, the spacer layer being used Second material;
- a waveguide disposed in the first cover layer, the waveguide being symmetrical along a central axis, the waveguide using a third material;
- the waveguide comprises a first waveguide of equal width, a second waveguide of equal width, and a third waveguide, the first end of the third waveguide being connected to the first end of the first waveguide, and the third a first end of the waveguide is connected to the first end of the second waveguide, and the first waveguide, the second waveguide and the third waveguide are formed in a ⁇ shape;
- a width of the third waveguide gradually increases from the first waveguide a second end to a first end of the first waveguide, a distance between the first waveguide and the second waveguide in a second direction, the second direction being located in a plane where the waveguide is located And the second direction is perpendicular to the first direction;
- An absolute value of a difference between a refractive index of the second material and a refractive index of the first material is less than a first threshold, and a difference between a refractive index of the third material and a refractive index of the first material is greater than a second Wide value.
- the cross-sectional shape of the substrate layer is concave
- the cross-sectional shape of the isolation layer is concave
- the first cover layer The cross-sectional shape is a rectangle
- the variogram converter further includes:
- the waveguide further includes a fourth waveguide disposed above the third waveguide,
- a width of the fourth waveguide is gradually increased, and in any cross section between the first end of the third waveguide and the second end of the third waveguide, The width of the fourth waveguide is smaller than the width of the third waveguide.
- the third possible implementation in the first aspect In a current mode, the shape of the third waveguide is an isosceles trapezoid, the shape of the fourth waveguide is an isosceles triangle, and the shapes of the first waveguide and the second waveguide are S-shaped.
- the length of the fourth waveguide is equal to the length of the third waveguide, the fourth waveguide is aligned with the third waveguide at a second end of the third waveguide, and the fourth waveguide is in the isosceles triangle
- the width of one end of the bottom edge is equal to the width of the second end of the third waveguide.
- the length of the waveguide is L1
- the length of the third waveguide and the fourth waveguide is L2
- the thickness of the first waveguide, the second waveguide and the third waveguide is HI
- the thickness of the fourth waveguide is H2
- W1 the width of the second end of the third waveguide
- W2 the distance between the waveguide and the bottom surface of the isolation layer
- the second end of the first waveguide and the second end of the second waveguide The distance between them is greater than ⁇ and less than 10 ⁇ .
- the waveguide further includes a bifurcated bifurcation waveguide
- the yoke bifurcated waveguide is coupled to a first end of the third waveguide, the yoke bifurcated waveguide being aligned with the first waveguide, wherein ⁇ is a positive integer.
- the material for the substrate layer is silicon, and the first material is dioxide Silicon, the second material is an engine oil, and the third material is silicon or silicon nitride.
- a device for light transmission comprising: the scalar converter and the optical waveguide according to the first aspect or any of the possible implementations of the first aspect, the plaque conversion A device is used to couple an optical signal input from the optical fiber into the optical waveguide.
- the zonal converter is coupled to the optical waveguide through a second end of the third waveguide, and the third waveguide Two The width of the end is equal to the width of the optical waveguide.
- the thickness and the fourth thickness of the third waveguide of the foregoing zebra converter including the fourth waveguide The sum of the thicknesses of the waveguides is equal to the thickness of the optical waveguide.
- a kerf converter comprising a first waveguide, a second waveguide and a third waveguide forming a Y shape.
- the scalpel converter can be used to convert the size of the pattern between the optical fiber and the optical waveguide, and the scalar converter can reduce the coupling loss between the optical fiber and the optical waveguide.
- Figure 1 is a schematic illustration of a stencil converter in accordance with one embodiment of the present invention.
- FIG. 2 is a plan view of a waveguide in a stencil converter according to an embodiment of the present invention.
- FIG. 3 is a schematic illustration of a variogram converter in accordance with another embodiment of the present invention.
- FIG. 4 is a plan view of a waveguide of a kerf converter according to another embodiment of the present invention.
- Figure 5 is an end elevational view showing the cross section of a-a' of the kerf switch according to another embodiment of the present invention.
- Figure 6 is an end elevational view showing the cross section of b-b' of the variogram converter of another embodiment of the present invention.
- Figure 7 is an end elevational view showing the cross section of c-c' of the kerf converter according to another embodiment of the present invention.
- Figure 8 is a schematic illustration of a light field distribution in accordance with one embodiment of the present invention.
- Figure 9 is a graph showing coupling loss versus wavelength for one embodiment of the present invention.
- Figure 10 is a graph showing the relationship between coupling loss and alignment tolerance of a TE mode in accordance with one embodiment of the present invention.
- Figure 11 is a graph showing the relationship between coupling loss and alignment tolerance of the TM mode of one embodiment of the present invention.
- Figure 12 is a plan view of a waveguide in a stencil converter according to another embodiment of the present invention.
- Figure 13 is a schematic illustration of an apparatus for light conduction in accordance with one embodiment of the present invention.
- Figure 14 is a plan view of a waveguide in an apparatus for light conduction according to an embodiment of the present invention. detailed description
- FIG. 1 is a schematic illustration of a stencil converter in accordance with one embodiment of the present invention.
- the variogram converter 200 shown in Fig. 1 includes:
- Substrate layer 201 Substrate layer 201 ;
- first cover layer 202 disposed above the substrate layer 201, the first cover layer is made of a first material; the isolation layer 203 is disposed between the substrate layer 201 and the first cover layer 202, and the spacer layer is made of a second material;
- a waveguide 204 is disposed within the first cover layer, the waveguide 204 is symmetrical along a central axis, and the waveguide 204 is etched with a third material.
- the waveguide 204 can be as shown in Fig. 2, and the central axis is indicated by a dotted line.
- the waveguide 204 includes a first waveguide 301 of equal width, a second waveguide 302 of equal width, and a third waveguide 303, the first end of the third waveguide 303 and the first end of the first waveguide 301 and the second waveguide 302 The first end is connected, and the first waveguide 301, the second waveguide 302, and the third waveguide 303 are formed in a Y shape.
- the width of the third waveguide 303 gradually increases, the distance between the first waveguide 301 and the second waveguide 302 in the second direction gradually decreases, and the second direction is perpendicular to the first direction
- the absolute value of the difference between the refractive index of the second material and the refractive index of the first material is less than the first threshold, and the difference between the refractive index of the third material and the refractive index of the first material is greater than the second threshold.
- a kerf converter comprising a first waveguide, a second waveguide and a third waveguide forming a Y shape.
- the scalpel converter can be used to convert the size of the pattern between the optical fiber and the optical waveguide, and the scalar converter can reduce the coupling loss between the optical fiber and the optical waveguide.
- the variogram converter can be attached to one end of the optical waveguide.
- the louver converter can be coupled to the optical waveguide through the second end of the third waveguide.
- the embodiment of the present invention does not limit the connection manner between the variogram converter and the optical waveguide.
- the second end of the third waveguide may be directly connected to the optical waveguide, or the second end of the third waveguide may be connected to the optical waveguide through a rectangular waveguide, which is not limited in the present invention.
- the optical waveguide has a rectangular cross section, and the width of the optical waveguide is W4, height is H4.
- the cross section means a section perpendicular to the longitudinal direction. It is also understood that the cross section is a section perpendicular to the first direction.
- the cross-sectional shape of the substrate layer 201 is concave
- the cross-sectional shape of the isolation layer 203 is concave
- the cross-sectional shape of the first cover layer 202 is rectangular.
- the kerf converter 200 may further include a second cover layer 205 disposed above the substrate layer 201, the second cover layer 205 being disposed outside the isolation layer 203, and the second cover layer 205 utilising the first material.
- the isolation layer 203 can be formed by deep etching a U-shaped groove and filling the U-shaped groove with the second material.
- the length of the isolation layer 203 may be less than or equal to the length of the substrate layer 201, which is not limited in the present invention.
- first cover layer 202 and the second cover layer 205 may collectively constitute a U-shape and a cantilever portion.
- the length of the isolation layer 203 is equal to the length of the substrate layer 201.
- the Oxz coordinate system is also shown in Fig. 2, and it can be understood that the first direction is the positive direction of the z-axis. And the width of the third waveguide 303 in the positive direction of the z-axis is gradually increased.
- the shape of the first waveguide 301 and the second waveguide 302 may be a straight line or a curved line, which is not limited in the present invention.
- it may be C-shaped or S-shaped.
- the shape of the third waveguide 303 is an isosceles trapezoid.
- the contour of the third waveguide 303 along the z-axis direction may also be an arc, which is not limited in the present invention.
- the length of the waveguide 204 is L1
- the length of the third waveguide 303 is L2.
- the width of the first waveguide 301 and the second waveguide 302 is W1
- the width of the second end of the third waveguide 303 is W2.
- the thicknesses of the first waveguide 301, the second waveguide 302, and the third waveguide 303 are both H1.
- the distance between the waveguide 204 and the bottom surface of the isolation layer is H3.
- the length is the dimension in the z-axis direction of the coordinate axis
- the width is the dimension in the X-axis direction of the coordinate axis
- the thickness is in the y-axis direction of the coordinate axis (ie, the figure The size of the 2 out direction).
- the range of each of the above parameters may be: ⁇ 3>5 ⁇ , 0 ⁇ Hl ⁇ 400nm,
- the distance between the second end of the first waveguide 301 and the second end of the second waveguide 302 may be several micrometers or ten micrometers, which is not limited in the present invention. Alternatively, the distance may be greater than 0.5 ⁇ m and less than 10 ⁇ m.
- the macro separation can be 1.2 ⁇ m.
- the waveguide 204 may further include a bifurcated bifurcated waveguide connected to the first end of the third waveguide, and the bifurcated bifurcated waveguide is aligned with the first waveguide 301.
- ⁇ is a positive integer.
- the length of the yoke bifurcated waveguide is equal to the length of the first waveguide 301.
- the bifurcated bifurcated waveguide is of equal width, and the width of the bifurcated bifurcated waveguide may be equal to the width of the first waveguide 301.
- the material of the substrate layer 201 may be silicon dioxide, the second material may be oil, and the third material may be silicon or nitride. silicon.
- the second material may be other lubricating oil or the like.
- the embodiment of the present invention does not limit the size of the first threshold and the second threshold.
- the first threshold is smaller than the second threshold.
- the first threshold may be 0.3 and the second threshold may be 1.8.
- the invention is not limited thereto.
- the substrate layer 201 is used to support the waveguide 204.
- the first cover layer 202 is used to limit the light mode in the waveguide 204.
- the isolation layer 203 is used to ensure that the light pattern in the waveguide 204 is away from the substrate 201.
- the thickness of the substrate layer 201, the thickness of the first cap layer 202, the thickness of the second cap layer 205, and the thickness of the spacer layer 203 are not specifically limited in the embodiment of the present invention.
- the length of the substrate layer 201 is equal to the length of the cover layer 202, and the length of the substrate layer 201 may be equal to the length of the waveguide 204.
- the waveguide 204 may be formed by processing a piece of material.
- the waveguide 204 may be formed by forming a third material by a photolithography process.
- the optical energy when the output optical signal of the optical fiber is input from the cantilever portion to the kerf converter 200, the optical energy can be distributed between the first waveguide 301 and the second waveguide 302. The light energy can then slowly enter into the third waveguide 303 and further output the optical signal into the rear optical waveguide.
- the waveguide 204 may further include a fourth waveguide.
- FIG. 3 it is a schematic diagram of a stencil converter according to another embodiment of the present invention.
- the kerf converter 300 shown in FIG. 3 includes a substrate layer 201; a first cover layer 202 disposed above the substrate layer 201, the first cover layer is made of a first material; and the substrate layer 201 and the first cover layer 202 are disposed.
- the spacer layer 203, the spacer layer is made of a second material, the waveguide 204 is disposed in the first cover layer, the waveguide 204 is symmetric along the central axis, and the waveguide 204 is made of a third material.
- the waveguide 204 can be as shown in FIG. 4, and the central axis is indicated by a dotted line.
- the waveguide 204 includes a first waveguide 301 of equal width, a second waveguide 302 and a third waveguide 303 of equal width, a first end of the third waveguide 303 and a first end of the first waveguide 301 and a second waveguide 302. The first end is connected, and the first waveguide 301, the second waveguide 302, and the third waveguide 303 are formed in a Y shape.
- the width of the third waveguide 303 gradually increases, the distance between the first waveguide 301 and the second waveguide 302 in the second direction gradually decreases, and the second direction is perpendicular to the first direction
- the absolute value of the difference between the refractive index of the second material and the refractive index of the first material is less than the first threshold, and the difference between the refractive index of the third material and the refractive index of the first material is greater than the second threshold.
- the waveguide 204 also includes a fourth waveguide 304 disposed above the third waveguide 303.
- the width of the fourth waveguide 304 is gradually increased, and in any cross section between the first end of the third waveguide 303 and the second end of the third waveguide 303, the fourth waveguide 304 The width is smaller than the width of the third waveguide 303.
- the mode converter 300 can be connected to the optical waveguide through the second end of the third waveguide 303 and the second end of the fourth waveguide 304.
- the embodiment of the present invention does not limit the connection manner between the variogram converter and the optical waveguide.
- the shape of the fourth waveguide 304 may be an isosceles triangle.
- the length of the fourth waveguide 304 may be less than or equal to the length of the third waveguide 303.
- One end of the base of the isosceles triangle of the fourth waveguide 304 is aligned with the second end of the third waveguide 303, and the width of the end of the fourth waveguide 304 at the bottom of the isosceles triangle may be equal to the third of the third waveguide 303. The width of the two ends.
- the optical waveguide has a rectangular cross section, and the optical waveguide has a width of W4 and a height of H4.
- the length of the waveguide 204 is L1
- the length of the third waveguide 303 is L2.
- the first waveguide The width of the 301 and second waveguides 302 is W1
- the width of the second end of the third waveguide 303 is W2.
- the thicknesses of the first waveguide 301, the second waveguide 302, and the third waveguide 303 are both H1.
- the thickness of the fourth waveguide is H2.
- the distance between the waveguide 204' and the bottom surface of the isolation layer is H3.
- the length is the dimension in the z-axis direction of the coordinate axis
- the width is the dimension in the X-axis direction of the coordinate axis
- the thickness is in the y-axis direction of the coordinate axis (ie, the figure The size of the 2 out direction).
- the fourth waveguide 304 is the first end of the fourth waveguide 304 at the smaller width end, and the fourth waveguide 304 is assumed to be the second end of the fourth waveguide 304 at the wider end, then the fourth waveguide 304
- the width of the second end can be W2.
- each parameter may be: ⁇ 3>5 ⁇ , 0 ⁇ HKH1+H2 ⁇ 400nm, 0 ⁇ 1 ⁇ 500 ⁇ , 0 ⁇ 2 ⁇ 200 ⁇ , and L2 ⁇ L1, 0 ⁇ Wl ⁇ 300nm, 200nm ⁇ W2 ⁇ 600nm .
- the distance between the second end of the first waveguide 301 and the second end of the second waveguide 302 may be several micrometers or ten micrometers, which is not limited in the present invention. Alternatively, the distance may be greater than 0.5 ⁇ m and less than 10 ⁇ m. For example, the large separation can be 1.2 ⁇ m.
- the waveguide 204 shown in FIG. 4 may be formed by performing photolithography on the third material a plurality of times.
- an end view of the cross section of the embossed converter 300 of Figs. 5 to 7 is shown.
- the end view shown in Fig. 5 is an end view taken along the cross section of a-a' in Fig. 3.
- the first waveguide 301 and the second waveguide 302 have a thickness HI, a width W1, and a distance H3 from the bottom surface of the isolation layer.
- the plane of the cross section is the xy plane
- the Oxy coordinate system is also shown in FIG. 5, wherein the first waveguide 301 and the second waveguide 302 are symmetric with respect to the y-axis, and the X-axis is the symmetry of the first waveguide.
- the axis, the X axis is the axis of symmetry of the second waveguide.
- the end view shown in Fig. 6 is an end view along the cross section of b-b' in Fig. 3.
- the thickness of the third waveguide 303 is HI
- the distance from the bottom surface of the isolation layer is H3.
- the thickness of the fourth waveguide 304 is H2.
- Fig. 7 is an end view along the cross section of c-c' in Fig. 3.
- the thickness of the waveguide 204' is shown as H4
- the distance from the bottom surface of the isolation layer is H3
- the width is W2.
- H4 H1+H2.
- the parameters of the variogram converter 300 in FIG. 3 to FIG. 7 may be as shown in Table 1. .
- embodiments of the present invention provide a scalpel converter that includes a first waveguide, a second waveguide, and a third waveguide that form a Y-shape, and a fourth waveguide that is disposed over the third waveguide.
- the scalpel converter can be used to convert the size of the plaque between the optical fiber and the optical waveguide, and the zonal converter can be used to reduce the coupling loss between the optical fiber and the optical waveguide.
- the optical signal output from the optical fiber can be coupled to the kerf converter 300 at the first waveguide and the second waveguide. There is a light field distribution between them, and then the optical signal can be coupled into the third waveguide and the fourth waveguide, further coupled into the rear optical waveguide.
- each parameter of the scalpel converter uses a value as shown in Table 1, and FIG. 8 is a schematic diagram of a light field distribution obtained by using a Finite Difference Time Domain (FDTD) method.
- the fiber 501 is a SMF-28 single mode fiber, and the SMF-28 single mode fiber has an outer diameter of 125 ⁇ m and an inner diameter of 8.2 ⁇ m.
- the mode field of the optical signal output from the optical fiber 501 is as shown in Fig. 8(a), and can also be understood as the mode field of the input optical signal of the variogram converter 300, the diameter of which is about 10 ⁇ m. It should be noted that the light field distribution of the cross section of the optical fiber 501 is shown in Fig. 8(a).
- Figure 8(b) shows the light field distribution in the waveguide 204' of the variogram converter 300. Wherein the intensity of the light field between the first waveguide and the second waveguide is weaker than the intensity of the light field in the third waveguide and the fourth waveguide. It should be noted that Fig. 8(b) shows the light field distribution of the longitudinal section of the waveguide 204'.
- Figure 8 (c) is a mode field of the input optical signal of the rear optical waveguide 502 connected to the variogram converter 300. It can also be understood that the mode field of the output optical signal of the variogram converter 300 is approximately the size of the louver.
- the micron-sized plaque in the optical fiber 501 is converted into a sub-micron-sized stencil in the optical waveguide.
- variogram converter 300 of Figure 8 is only schematically represented by a waveguide 204.
- Figure 9 shows a plot of coupling loss versus wavelength.
- the wavelength range is C band, which is 1.53 ⁇ -1.565 ⁇ .
- the coupling loss for the electric field transverse wave (Transverse Electric, TE) is less than 1.2dB, and the coupling loss for the transverse magnetic field (Transverse Magnetic, TM) is less than 1.5dB.
- the alignment tolerance of the scalar converter is large.
- the alignment tolerance is the offset between the axis of the fiber and the coordinate axis shown in Figure 5.
- the alignment tolerance can also be called the fiber alignment tolerance.
- Fig. 10 is a graph showing the relationship between the coupling loss and the alignment tolerance for the ⁇ mode at a wavelength of 1.547 ⁇ m.
- Figure 11 shows the relationship between coupling loss and alignment tolerance for the ⁇ mode at a wavelength of 1.547 ⁇ .
- the scallop converter provided by the embodiment of the present invention has a large alignment tolerance. That is to say, by using the scalpel converter provided by the embodiment of the present invention, the alignment requirement between the optical fiber and the spot mode converter can be reduced.
- the waveguide 204 or the waveguide 204' in the variogram converter has a symmetrical structure, and the symmetry plane is a plane perpendicular to the width direction. It is also understood that the symmetry plane is a y-z plane.
- 204 in the above embodiment may further include an N-branch waveguide connected to the first end of the third waveguide 303, the N-branch waveguide being aligned with the first waveguide 301.
- N is a positive integer.
- the length of the N-branch waveguide is equal to the length of the first waveguide 301.
- the N-branch waveguide is of equal width, and the width of the N-branch waveguide may be equal to the width of the first waveguide 301.
- Figure 13 is a diagram of an apparatus for light conduction according to an embodiment of the present invention, and the apparatus shown in Figure 13 includes a kerf converter 1401 and an optical waveguide 1402.
- the variogram converter 1401 is for coupling an optical signal input from the optical fiber into the optical waveguide 1402.
- the variogram converter 1401 may be a embossed converter of any of the foregoing embodiments, and may be, for example, a stencil converter 200 or a stencil converter 300.
- an embodiment of the present invention provides a device for light conduction, the device comprising a scalar converter and an optical waveguide, wherein the louver converter couples an optical signal input from an external optical fiber into the optical waveguide, and the coupling loss is small.
- the alignment tolerance of the device and the optical fiber is relatively large.
- the kerf converter 1401 includes a waveguide including at least a first waveguide, a second waveguide, and a third waveguide.
- the variogram converter 1401 is connectable to the optical waveguide 1402 through the second end of the third waveguide, and the width of the second end of the third waveguide is equal to the width of the optical waveguide 1402.
- the thickness of the waveguide of the kerf converter 1401 may be equal to the thickness of the optical waveguide 1402.
- the kerf converter 1401 is the kerf converter 200 of the previous embodiment.
- the kerf converter 1401 further includes a fourth waveguide disposed above the third waveguide, and the sum of the thickness of the third waveguide of the kerf converter 1401 and the thickness of the fourth waveguide may be Equal to the thickness of the optical waveguide 1402, for example, the kerf converter 1401 is the kerf converter 300 in the foregoing embodiment.
- Fig. 14 is a plan view showing a waveguide in the apparatus for light conduction according to an embodiment of the present invention. It will be understood that Figure 14 includes the waveguide 204 in the kerf converter 300, as well as the optical waveguide 1402.
- the optical waveguide 1402 is the same as the material used for the waveguide in the variogram converter 1401, and is a third material.
- the third material can be silicon or silicon nitride.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct connection or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.
- the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
- the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a U disk, a mobile hard disk, an ead-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and the like, which can store program codes. .
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201480077367.1A CN106461866B (zh) | 2014-07-16 | 2014-07-16 | 模斑转换器以及用于光传导的装置 |
JP2017502585A JP6302130B2 (ja) | 2014-07-16 | 2014-07-16 | 光伝送のためのスポットサイズ変換器および装置 |
PCT/CN2014/082308 WO2016008114A1 (zh) | 2014-07-16 | 2014-07-16 | 模斑转换器以及用于光传导的装置 |
EP14897866.1A EP3159719B1 (en) | 2014-07-16 | 2014-07-16 | Spotsize converter and apparatus for optical conduction |
Applications Claiming Priority (1)
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CN109696725A (zh) * | 2017-10-23 | 2019-04-30 | 中兴光电子技术有限公司 | 一种模斑变换器及其制造方法 |
CN114859464A (zh) * | 2021-01-20 | 2022-08-05 | 中国科学院微电子研究所 | 一种基模模场转换器及其构建方法 |
CN115113329A (zh) * | 2022-08-29 | 2022-09-27 | 上海羲禾科技有限公司 | 一种光波导模斑转换装置及其制造方法 |
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CN109283619B (zh) * | 2018-11-13 | 2024-02-06 | 苏州易缆微光电技术有限公司 | 基于双层聚合物波导的模斑转换器及其制备方法 |
US20220260785A1 (en) * | 2019-05-29 | 2022-08-18 | Corning Incorporated | Mode expansion waveguide and spot size converter comprising such for direct coupling with fiber |
CN111367016B (zh) * | 2020-04-10 | 2021-11-30 | 联合微电子中心有限责任公司 | 一种模斑转换器及其制备方法 |
CN111562650A (zh) * | 2020-06-04 | 2020-08-21 | 上海交通大学 | 基于双三叉戟亚波长光栅结构的端面耦合器 |
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