Abstract: A device for patterning structures on a substrate includes an imaging device having a scanning tip, a light emitting device, and a space around the scanning tip. The space comprises a vapor of a material which is suitable for Chemical Vapor Deposition onto the substrate when decomposed. The light emitting device is adapted to emit a light beam, which has an intensity not capable to decompose the vapor, onto the scanning tip in such a way that an electromagnetic field induced by the light beam near the scanning tip is high enough to decompose the vapor.

Abstract: A device for patterning structures on a substrate includes an imaging device having a scanning tip, a light emitting device, and a space around the scanning tip. The space comprises a vapour of a material which is suitable for Chemical Vapour Deposition onto the substrate when decomposed. The light emitting device is adapted to emit a light beam, which has an intensity not capable to decompose the vapour, onto the scanning tip in such a way that an electromagnetic field induced by the light beam near the scanning tip is high enough to decompose the vapour.

Abstract: A method in effectuating the redirection of light which is propagated within a waveguide, and which eliminates the necessity for a bending of the waveguide, or the drawbacks encountered in directional changes in propagated light involving the need for sharp curves of essentially small-sized radii, which would resultingly lead to excessive losses in light. In this connection, the method relates to the fabricating and the provision of a wire-grid polarization beam splitter within an optical waveguide, which utilizes a diblock copolymer template to formulate the wire-grid.

Abstract: A method in effectuating the redirection of light which is propagated within a waveguide, and which eliminates the necessity for a bending of the waveguide, or the drawbacks encountered in directional changes in propagated light involving the need for sharp curves of essentially small-sized radii, which would resultingly lead to excessive losses in light. In this connection, the method relates to the fabricating and the provision of a wire-grid polarization beam splitter within an optical waveguide, which utilizes a diblock copolymer template to formulate the wire-grid.

Abstract: A method in effectuating the redirection of light which is propagated within a waveguide, and which eliminates the necessity for a bending of the waveguide, or the drawbacks encountered in directional changes in propagated light involving the need for sharp curves of essentially small-sized radii, which would resultingly lead to excessive losses in light. In this connection, the method relates to the fabricating and the provision of a wire-grid polarization beam splitter within an optical waveguide, which utilizes a diblock copolymer template to formulate the wire-grid.

Abstract: A method in effectuating the redirection of light which is propagated within a waveguide, and which eliminates the necessity for a bending of the waveguide, or the drawbacks encountered in directional changes in propagated light involving the need for sharp curves of essentially small-sized radii, which would resultingly lead to excessive losses in light. In this connection, the method relates to the fabricating and the provision of a wire-grid polarization beam splitter within an optical waveguide, which utilizes a diblock copolymer template to formulate the wire-grid.

Abstract: The present invention discloses an electrode structure for electronic and opto-electronic devices. Such a device comprises a first electrode substantially having a conductive layer (204), a nonmetal layer (206) formed on the conductive layer, a fluorocarbon layer (208) formed on the nonmetal layer, a structure (210) formed on the structure. The electrode may further comprise a buffer layer (205) between the conductive layer and the nonmetal layer.

Abstract: The present invention discloses an electrode structure for electronic and opto-electronic devices. Such a device comprises a first electrode substantially having a conductive layer (204), a nonmetal layer (206) formed on the conductive layer, a fluorocarbon layer (208) formed on the nonmetal layer, a structure (210) formed on the structure. The electrode may further comprise a buffer layer (205) between the conductive layer and the nonmetal layer.

Abstract: An apparatus for self-aligning an optical fiber to an optical waveguide. The apparatus includes an optical waveguide chip including: one or more optical waveguides formed on a first substrate, each optical waveguide having a protruding portion; and one or more alignment rails formed on the first substrate, each alignment rail spaced apart from each optical waveguide by a predetermined distance; and an alignment jig including: one or more grooves formed in a second substrate, each groove adapted to receive one protruding portion and each groove supporting one optical fiber in alignment with one optical waveguide; and one or more alignment grooves formed on the second substrate, each alignment groove spaced apart from the grooves by the predetermined distance and adapted to mate with the alignment rails.

Abstract: A method for manufacturing an optical device with a defined total device stress and a therefrom resulting defined birefringence and a therefrom resulting defined optical polarization dependence is disclosed. In a preferred embodiment, a lower cladding layer of an amorphous material with a first refractive index is provided and above that an upper cladding layer of an amorphous material with a second refractive index, which latter is manufactured from a material which is tunable in its stress. Between the lower and upper cladding layer an optical waveguide core is manufactured comprising an amorphous material having a third refractive index which is larger than the first and second refractive index. The optical waveguide core is thermally annealed, after which it has a defined waveguide core stress. The upper cladding layer is manufactured to have a cladding layer stress that together with the waveguide core stress results in the total device stress.

Abstract: A method for manufacturing an optical device with a defined total device stress, birefringence and optical polarization dependence is disclosed. The method comprises first providing a tower cladding layer of an amorphous material with a first refractive index and then providing above the lower cladding layer an upper cladding layer of an amorphous material with a second refractive index. An optical waveguide core comprising an amorphous material having a third refractive index (larger than the first refractive index and the second refractive index) is provided between the lower and the upper cladding layers. The upper cladding layer is thermally annealed by keeping the upper cladding layer at a first temperature, then raising the temperature to a second temperature, maintaining the second temperature for an annealing time period, and lowering the temperature to a third temperature, after which the temperature is lowered to a fourth temperature.

Abstract: An apparatus for self-aligning an optical fiber to an optical waveguide. The apparatus includes an optical waveguide chip including: one or more optical waveguides formed on a first substrate, each optical waveguide having a protruding portion; and one or more alignment rails formed on the first substrate, each alignment rail spaced apart from each optical waveguide by a predetermined distance; and an alignment jig including: one or more grooves formed in a second substrate, each groove adapted to receive one protruding portion and each groove supporting one optical fiber in alignment with one optical waveguide; and one or more alignment grooves formed on the second substrate, each alignment groove spaced apart from the grooves by the predetermined distance and adapted to mate with the alignment rails.

Abstract: An optical waveguide device is proposed which comprises a substrate, thereupon a lower cladding layer, thereupon an upper cladding layer and between said cladding layers a waveguide element. The influence of the substrate on the stress-induced birefringence of the optical waveguide device is reduced by modification of the substrate from underneath the waveguide element.

Abstract: A method for manufacturing an optical device with a defined total device stress and a there-from resulting defined birefringence and a therefrom resulting defined optical polarization dependence is disclosed. The method comprises a first step of providing a lower cladding layer of an amorphous material, preferably based on SiO2, that may be doped with elements like Boron and/or Phosphorous with a first refractive index and a second step of providing above the lower cladding layer an upper cladding layer of an amorphous material, preferably based on SiO2, that may be doped with elements like Boron and/or Phosphorous with a second refractive index, and being manufactured from a material which is tunable in its stress.

Abstract: A method for manufacturing an optical device with a defined total device stress and a therefrom resulting defined birefringence and a therefrom resulting defined optical polarization dependence is disclosed. In a preferred embodiment, a lower cladding layer of an amorphous material with a first refractive index is provided and above that an upper cladding layer of an amorphous material with a second refractive index, which latter is manufactured from a material which is tunable in its stress. Between the lower and upper cladding layer an optical waveguide core is manufactured comprising an amorphous material having a third refractive index which is larger than the first and second refractive index. The optical waveguide core is thermally annealed, after which it has a defined waveguide core stress. The upper cladding layer is manufactured to have a cladding layer stress that together with the waveguide core stress results in the total device stress.

Abstract: The present invention concerns optical memories. Such an optical memory (30) comprises a data line (31) which is optically coupled via a directional waveguide coupler (33) to a circular memory loop (32). In addition, it comprises a pump line (35), which is employed in order to couple a refresh signal into the loop (32). As in case of the data line, the pump line is coupled via a directional waveguide coupler (34) to the loop (32). The counter propagating refresh light pulse provides for an amplification of the light pulse circulating in the memory loop being doped with Erbium ions. The length L of the memory loop (32) is chosen such that the circulation frequency of the light pulse in said loop (32) is equal to the clock frequency of the optical memory (30). The memory provides for individual manipulation of each stored optical bit.