Abstract: A dibenzofuranonylium methylate compound represented by the following formula (I), having maximum absorption wavelength of over 1 &mgr;m, high thermal stability and good solubility in organic solvents, and a production method thereof are provided: 1

Abstract: An optical pulse code recognition device and an optical distributor recognize multiple bits of a 1 Tbps packet signal as they are, all at one time. A serial signal light emitted from an optical fiber is collimated by a lens and applied onto a mask having a mask pattern. A thin film optical switch increases its optical transmittance when irradiated with a control light, allowing the collimated signal light to transmit through it. When the control light is applied, the transmitted collimated signal light is converted into a parallel signal. The mask pattern has multiple transmission portions allowing one bit of signal light to transmit through and an equal number of non-transmitting portions to block the light, and whether or not a bit pattern of the signal light and the mask pattern match each other is found by detecting a maximum or minimum value of light intensity with a photodetector.

Abstract: A method permitting less energy consumption and efficient formation of high quality electrodes is provided. An electrode is formed as an electrodeposited film by irradiating the surface of an object to be treated, the surface at least permitting generation of charged particles when irradiated with a laser beam, with a fentosecond laser beam and metal-plating the surface of a substrate using hot electrons generated by this laser irradiation.

Abstract: A method permitting less energy consumption and efficient formation of high quality electrodes is provided. An electrode is formed as an electrodeposited film by irradiating the surface of an object to be treated, the surface at least permitting generation of charged particles when irradiated with a laser beam, with a femtosecond laser beam and metal-plating the surface of a substrate using hot electrons generated by this laser irradiation.

Abstract: An optical circuit device is manufactured by forming an organic film formed on a substrate, and giving this organic film non-linear optical properties. An optical circuit device is formed containing an organic film formed on a substrate, wherein said film is either selectively formed on a portion of the region on a substrate or said film being formed over the entire region on a substrate, and a portion of a region of that film is either selectively formed to a thickness differing from other regions or selectively having a different structure. This optical circuit device can be manufactured to have various constitutions, and allows the formation of a multilayer optical circuit.

Abstract: An optical circuit system which takes out at least a portion of the light of a light power source corresponding to at least one type of output voltage of an IC, board, multichip module, electronic element, or opto-electronic element and produces an optical signal, wherein the light power source is an optical waveguide into which light has been introduced, a waveguide laser, or a waveguide optical amplifier, light reflecting portions are provided at its ends and/or middle, a signal transmission waveguide is formed in contact with the side surface and/or top or bottom surface of the optical waveguide or in proximity to the same at a certain distance, and the optical signal corresponding to at least one type of output voltage of the IC, board, multichip module, electronic element, or opto-electronic element is made to propagate to the signal transmission waveguide, which optical circuit system is rich in flexibility and enables complicated optical interconnections to be handled, and components of the same.

Abstract: A method of forming an image comprising the steps of: preparing a device in which an image holding element which can functions as one of electrodes pair and which has a surface for holding an image and an opposite electrode which is the other of the electrodes pair are immersed in a dispersion of a coloring material fine particles in which ionized coloring material fine particles are dispersed in an aqueous liquid, and applying electric current to a desired area of the image holding element and the opposite electrode through the dispersion and depositing-building-up the coloring material fine particles to the desired area electrochemically to form an image, is disclosed.

Abstract: A voltage is applied between a first and second electrode, the first electrode being immersed into an aqueous solution in which a group of two or more dyes having different polarities, and including at least one dye able to be independently precipitated from this aqueous solution by an electrochemical reaction, are dissolved and coexist at a specified pH, and the second electrode being provided so as to cooperate with the first electrode in causing the electrochemical reaction, thereby forming a first mixed color image which is composed of the group of dyes, or another mixed color image whose colors are different to those of the first mixed color image and which is composed of the group of dyes, or a single color image which is composed of a single dye on the electrode. Thus, it is possible to realize a high quality image using dyes and safely and simply record an image at a high levels of flexibility.

Abstract: A method of forming waveguides, refractive index distributions and optical couplings automatically by light incidence, and devices obtained thereby. A non-linear optical material which has excellent properties of a large degree of freedom for an optical circuit substrate composition, etc. is used for optical circuit devices and optical circuit substrates. A photoelectric device containing an organic conjugated polymer film is deposited on a substrate by vapor deposition polymerization as at least one function layer. An optical network is provided with optical wiring for exchanging signals between processing elements selected from electronic elements, electronic apparatuses, electrooptical elements and electrooptical apparatuses.

Abstract: A medium (for example, a solution) containing a dye is in contact with an image forming material in which a PN junction or a PIN junction is formed on the substrate. When the image forming material is irradiated with light, the PN junction or the PIN junction generates an electromotive force, whereby the dye is deposited on the portion where the electromotive force is generated to form an image.

Abstract: The present invention provides an image forming method that (i) yields lower running costs, (ii) produces high resolution and high quality images as it allows for a minimum unit of the image being of molecular size, (iii) provides continuous image gradation, (iv) consists of environmentally friendly manufacturing steps, and (v) offers energy savings, low production cost and high efficiency which results in a versatile process with extensive applications in the related arts.

Abstract: The present invention provides an image forming method which is featured by the advantages such as a high-quality image, a relatively high speed operation, a low running cost, energy saving, resource saving and friendliness to both environments and users.First, there is prepared an image forming medium which comprises on an electroconductive substrate an electroconductive polymer layer capable of taking in and holding an ionic dye as a result of the change in at least two states selected from the group consisting of an oxidized state, a neutral state and a reduced state of the electroconductive polymer and which holds an ionic dye. Next, an image receiving medium, which has OH.sup.- ions having the same polarity as that of the ionic dye held in the electroconductive polymer layer, is brought into contact with the electroconductive polymer layer. Accordingly, there occurs an ion exchange between the ionic dye held in the electroconductive polymer layer and the OH.sup.

Abstract: An optical circuit device is manufactured by forming an organic film formed on a substrate, and giving this organic film non-linear optical properties. An optical circuit device is formed containing an organic film formed on a substrate, wherein said film is either selectively formed on a portion of the region on a substrate or said film being formed over the entire region on a substrate, and a portion of a region of that film is either selectively formed to a thickness differing from other regions or selectively having a different structure. This optical circuit device can be manufactured to have various constitutions, and allows the formation of a multilayer optical circuit.

Abstract: An image forming method and an image forming apparatus, wherein a thin film of an electroconductive polymer which holds and releases a dye by means of an electric field enables a construction including a driving circuit, a driving device and an image forming medium to be used for the transfer of an image pattern. The image forming method includes forming a thin film of the electroconductive polymer on an electroconductive substrate, which can take in, hold and release ionic dye molecules in accordance with the change of the state of the electroconductive polymer, that can assume at least two physicochemical states among an oxidized state, a neutral state and a reduced state of the thin film; and bringing the thin film into contact with an image receiving medium. The image receiving medium has suppressed electroconductivity.

Abstract: An active optical circuit sheet or active optical circuit board wherein an electro optical switch or optical modulator is driven with a voltage (SIGin) from an electronic device, the electrical signal (SIGin) is converted to an optical signal, transmitted and then converted to an electrical signal (SIGout) at an optical receiver element, and an electrical connection is formed between an optical wiring board and the electronic device for transmission of signals to another or the same electronic device, separating the electrical wiring at the electronic device end and the optical wiring at the optical wiring board end, or alternatively, SIGin and SIGout electrode pads are provided on the side of the optical wiring board on which the optical device is mounted or on the opposite side, for connection with the electronic device.

Abstract: An optical integrated circuit wherein the waveguide network is constructed of a passive waveguide and a functional material is used on the functional portions, an optical circuit device which uses transparent electrodes, an optical switch which uses transparent electrodes and a functional portion made of a non-linear optical material, a matrix optical switch which converts inputted and outputted light at an electrical/optical converter element, and an optical integrated circuit or optical circuit device prepared by selective vapor growth of a functional material on desired regions, as well as an organic film growth process by which an organic film is selectively grown on recess walls and an organic film formation process whereby organic CVD or MLD is performed using a chamber divided into multiple regions.

Abstract: An optical circuit system which takes out at least a portion of the light of a light power source corresponding to at least one type of output voltage of an IC, board, multichip module, electronic element, or opto-electronic element and produces an optical signal, wherein the light power source is an optical waveguide into which light has been introduced, a waveguide laser, or a waveguide optical amplifier, light reflecting portions are provided at its ends and/or middle, a signal transmission waveguide is formed in contact with the side surface and/or top or bottom surface of the optical waveguide or in proximity to the same at a certain distance, and the optical signal corresponding to at least one type of output voltage of the IC, board, multichip module, electronic element, or opto-electronic element is made to propagate to the signal transmission waveguide, which optical circuit system is rich in flexibility and enables complicated optical interconnections to be handled, and components of the same.

Abstract: A nonlinear optical material composed of a polyimide obtained from a diamine and/or a diacid anhydride or dithioacid anhydride substituted by a portion having a nonlinear optical effect or of molecules having a benzocyclobutene structure substituted at the portions having an nonlinear linear optical effect.

Abstract: A nonlinear optical material composed of a polyimide obtained from a diamine and/or a diacid anhydride or dithioacid anhydride substituted by a portion having a nonlinear optical effect or of molecules having a benzocyclobutene structure substituted at the portions having an nonlinear linear optical effect.

Abstract: A nonlinear optical polymer material comprising at least one polymer selected from the group consiting of polyimides, acrylic resins and benzocyclobutene resins containing, as a guest molecule, as a side chain, or in the main chain, a molecule or a chemical moiety having a basic structure of merocyanine dye represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 independently represent hydrogen or an organic group, provided that R.sup.1 and R.sup.2 or R.sup.3 and R.sup.5 may independently combine together to form an organo ring structure, and n is an integer of 1 to 3.