Abstract: Nonlinear optical chromophores are provided that have a short chain bridging group between donor and acceptor, which chromophores exhibit lowered ?max values and narrow absorption bands. Electro-optic films prepared from nonlinear optical chromophores provided have enhanced transparency to wavelengths outside of the narrow absorption bands, as well as low optic loss, high thermal stability, and high photostability.

Abstract: The present invention is directed, in general, to compositions containing electro-optic materials and high boiling point solvents allowing for improved, more efficient poling, as well as methods of poling such materials. Various embodiments of the present invention thus provide materials with excellent electro-optic properties which can be efficiently poled for use in electro-optic devices. In the various embodiments of the present invention, materials can be applied as thin films and efficiently poled at low temperatures with normally applied voltage, while simultaneously exhibiting excellent nonlinear optical macroscopic properties and thermal stability.

Abstract: An EO polymer modulator with conformal atomic layer deposition sealant layers including an active region of a device material stack with an elongated tapered active section positioned on a passive waveguide core. The device material stack supported on a substrate with the passive waveguide core defining light input and light output side surfaces. A conformal atomic layer deposition sealant layer overlying the device material stack including the light input and light output side surfaces, the conformal atomic layer deposition sealant layer defining windows for the light input and light output side surfaces.

Abstract: An EO polymer modulator including a substrate with a cladding layer formed on a surface and a passive waveguide core, having a cross-sectional area, formed in the cladding layer and including an elongated tapered active section. An elongated trench in the cladding layer, the elongated tapered active section of the waveguide core positioned in the elongated trench, electrodes positioned on a surface of the cladding layer on opposite sides of the elongated trench, and an elongated strip of EO polymer overlying the elongated tapered active section of the waveguide core. The elongated strip of EO polymer positioned between and parallel with the electrodes and coplanar with the electrodes.

Abstract: An EO polymer modulator with conformal atomic layer deposition sealant layers including an active region of a device material stack with an elongated tapered active section positioned on a passive waveguide core. The device material stack supported on a substrate with the passive waveguide core defining light input and light output side surfaces. A conformal atomic layer deposition sealant layer overlying the device material stack including the light input and light output side surfaces, the conformal atomic layer deposition sealant layer defining windows for the light input and light output side surfaces.

Abstract: An EO polymer modulator including a substrate with a cladding layer formed on a surface and a passive waveguide core, having a cross-sectional area, formed in the cladding layer and including an elongated tapered active section. An elongated trench in the cladding layer, the elongated tapered active section of the waveguide core positioned in the elongated trench, electrodes positioned on a surface of the cladding layer on opposite sides of the elongated trench, and an elongated strip of EO polymer overlying the elongated tapered active section of the waveguide core. The elongated strip of EO polymer positioned between and parallel with the electrodes and coplanar with the electrodes.

Abstract: The present invention discloses a method of planning a 3D printing path based on Fermat's spiral. The method comprises generating a plurality of iso-contours for a given topological connected region, wherein adjacent iso-contours of the plurality of iso-contours have a set spacing therebetween. The method also comprises constructing a spiral connected graph according to the plurality of iso-contours and generating a spiral connected tree according to the spiral connected graph. The method further comprises connecting a subset of the plurality of iso-contours according to the spiral connected tree to form a connected Fermat spiral. The method additionally comprises smoothing the connected Fermat spiral through a global optimization method based on a width of the printing path being consistent.

Abstract: The present invention discloses a method of planning a 3D printing path based on Fermat's spiral. The method comprises generating a plurality of iso-contours for a given topological connected region, wherein adjacent iso-contours of the plurality of iso-contours have a set spacing therebetween. The method also comprises constructing a spiral connected graph according to the plurality of iso-contours and generating a spiral connected tree according to the spiral connected graph. The method further comprises connecting a subset of the plurality of iso-contours according to the spiral connected tree to form a connected Fermat spiral. The method additionally comprises smoothing the connected Fermat spiral through a global optimization method based on a width of the printing path being consistent.

Abstract: An integrated circuit is configured for optical communication via an optical polymer stack located on top of the integrated circuit. The optical polymer stack may include one or more electro-optic polymer devices including an electro-optic polymer. The electro-optic polymer may include a host polymer and a second order nonlinear chromomophore, the host polymer and the chromophore both including aryl groups configured to interact with one another to provide enhanced thermal and/or temporal stability.

Abstract: Disclosed are a method and system for dividing a plant organ point cloud. According to information about lamina point cloud blocks and stem point cloud blocks in a previous adjacent point cloud frame of a point cloud frame to be divided and a flatness feature of a data point of the point cloud frame to be divided, a point cloud of the point cloud frame to be divided is divided into lamina point cloud blocks and stem point cloud blocks; taking the adjacent point cloud frame as a reference to divide the point cloud frame facilitates the divided organ in maintaining the consistency of time and space between adjacent point cloud frames, and improves the accuracy of plant organ division.

Abstract: Provided are an image restoration method and device. The method comprises: processing image blocks, which are initially registered, to acquire connection curves among the image blocks; constructing an ambient field of images to be restored by means of the connection curve; by minimizing energy of the connection curve in the ambient field, registering the image blocks; and performing image filling on the registered image blocks to acquire a restored image. The device comprises: a processing unit used for processing the image blocks, which are initially registered, to acquire the connection curve among the image blocks; an ambient field construction unit used for constructing the ambient field of the image to be restored by means of the connection curve; a registering unit used for registering the image blocks by minimizing the energy of the connection curve in the ambient field; and a filling unit used for performing image filling on the registered image blocks to acquire the restored image.

Abstract: A low index of refraction hybrid optical cladding may be formed from a fluorinated sol-gel. An electro-optic device may include a poled organic chromophore-loaded modulation layer (electro-optic polymer) and at least one adjacent fluorinated hybrid sol-gel cladding layer.

Abstract: An integrated circuit is configured for optical communication via an optical polymer stack located on top of the integrated circuit. The optical polymer stack may include one or more electro-optic polymer devices including an electro-optic polymer. The electro-optic polymer may include a host polymer and a second order nonlinear chromomophore, the host polymer and the chromophore both including aryl groups configured to interact with one another to provide enhanced thermal and/or temporal stability.

Abstract: A method for extracting a skeleton form a point cloud includes: obtaining inputted point cloud sampling data; contracting the point cloud using an iterative formula and obtaining skeleton branches, the iterative formula is: argmin X ? ? i ? I ? ? ? j ? J ? ? ? x i - q i ? ? ? ? ( ? x j - q j ? ) + R ? ( X ) , ? wherein R ? ( X ) = ? i ? I ? ? ? i ? ? i ? ? I ? \ ? { i } ? ? ? ? ( ? x i - x i ? ? ) ? i ? ? x i - x i ? ? , ? ? ( r ) = ? - 4 ? ? r 2 h 2 , wherein J represents a point set of the point cloud sampling data, q represents the sampling points in the point set J, I represents a neighborhood point set of the sampling points q, x represents the neighborhood points in the neighborhood point set I, R is a regular term, ? is a weighting coefficient, h is a neighborhood radius of the neighborhood point set I, and ? is a distribution coefficient; and connecti

Abstract: A method for extracting a skeleton form a point cloud includes: obtaining inputted point cloud sampling data; contracting the point cloud using an iterative formula and obtaining skeleton branches, the iterative formula is: arg ? ? min X ? ? i ? I = ? ? j ? J ? ? x i - q i ? ? ? ? ( ? x j - q j ? ) + R ? ( X ) , wherein R ? ( X ) = ? i ? I ? ? i ? ? i ? ? I / { i } ? ? ? ( ? x i - x i ? ? ) ? i ? ? x i - x i ? ? , ? ? ( r ) = ? 4 ? ? r 2 h 2 , wherein J represents a point set of the point cloud sampling data, q represents the sampling points in the point set J, I represents a neighborhood point set of the sampling points q, x represents the neighborhood points in the neighborhood point set I.

Abstract: Disclosed are a method and system for dividing a plant organ point cloud. According to information about lamina point cloud blocks and stem point cloud blocks in a previous adjacent point cloud frame of a point cloud frame to be divided and a flatness feature of a data point of the point cloud frame to be divided, a point cloud of the point cloud frame to be divided is divided into lamina point cloud blocks and stem point cloud blocks; taking the adjacent point cloud frame as a reference to divide the point cloud frame facilitates the divided organ in maintaining the consistency of time and space between adjacent point cloud frames, and improves the accuracy of plant organ division.

Abstract: Provided are an image restoration method and device. The method comprises: processing image blocks, which are initially registered, to acquire connection curves among the image blocks; constructing an ambient field of images to be restored by means of the connection curve; by minimizing energy of the connection curve in the ambient field, registering the image blocks; and performing image filling on the registered image blocks to acquire a restored image. The device comprises: a processing unit used for processing the image blocks, which are initially registered, to acquire the connection curve among the image blocks; an ambient field construction unit used for constructing the ambient field of the image to be restored by means of the connection curve; a registering unit used for registering the image blocks by minimizing the energy of the connection curve in the ambient field; and a filling unit used for performing image filling on the registered image blocks to acquire the restored image.

Abstract: An integrated circuit is configured for optical communication via an optical polymer stack located on top of the integrated circuit. The optical polymer stack may include one or more electro-optic polymer devices including an electro-optic polymer. The electro-optic polymer may include a host polymer and a second order nonlinear chromomophore, the host polymer and the chromophore both including aryl groups configured to interact with one another to provide enhanced thermal and/or temporal stability.

Abstract: According to an embodiment, an electro-optic polymer comprises a host polymer and a guest nonlinear optical chromophore having the structure D-?-A, wherein: D is a donor, ? is a ?-bridge, and A is an acceptor; a bulky substituent group is covalently attached to at least one of D, ?, or A; and the bulky substituent group has at least one non-covalent interaction with part of the host polymer that impedes chromophore depoling.

Abstract: An urban scenes reconstruction method includes: acquiring digital data of a three-dimensional subject, the digital data comprising a 2D photograph and a 3D scan; fusing the 3D scan and the 2D photograph to create a depth-augmented photograph; decomposing the depth-augmented photograph into a plurality of constant-depth layers; detecting repetition patterns of each constant-depth layer; and using the repetitions to enhance the 3D scan to generate a polygon-level 3D reconstruction.