OPTICAL DEVICE
    1.
    发明专利

    公开(公告)号:JPH1068974A

    公开(公告)日:1998-03-10

    申请号:JP18085097

    申请日:1997-07-07

    Abstract: PROBLEM TO BE SOLVED: To provide a device having an optical cavity changeable over from an on state to an off state. SOLUTION: The state of this device is changeable over form the on state to the off state and may thereafter be returned to the off state from the on state. Reduction potential is impressed on the device changed over to the on state. Oxidation potential is impressed on the device changed over to the off state. The device has a high contrast ratio between the on state and the off state and has the optical cavity therein. The optical cavity is a multilayered structural body. The selection of the materials of the plural layers and their thicknesses are so executed that the light reflected from the surfaces between the several surfaces within this multilayered structural body can controllably make interference.

    OPTICAL MATERIAL
    2.
    发明专利

    公开(公告)号:JPH11223701A

    公开(公告)日:1999-08-17

    申请号:JP33049098

    申请日:1998-11-20

    Abstract: PROBLEM TO BE SOLVED: To provide a crystalline material which is usable with an electro-optic modulator operative at a high frequency and wide range wavelength and exhibits a high peak absorbance difference and high peak refractive index difference. SOLUTION: The crystalline material obtainable from III-V, II-VI or IV semiconductor microcrystals is embedded into a polymer material, by which the optical material indicating the high peak absorbance difference and high peak refractive index difference is obtd. The crystalline material is a CdSe crystal having a size of a diameter below 5.8 mn, more preferably a diameter below about 4 nm and is embedded into poly(vinyl pyridine). The crystalline material inserted between two electrodes delineates the optical modulator. The crystalline material of which 10% crystals are embedded into the polymer exhibits the absorbance difference spectrum (ΔA) of about 50 cm at a wavelength of about 610 nm and the refractive index difference (Δn) of about 10 at a wavelength of about 625 nm by impressing voltage of 100 V.

    6.
    发明专利
    未知

    公开(公告)号:DE60000018T2

    公开(公告)日:2002-03-07

    申请号:DE60000018

    申请日:2000-01-31

    Abstract: A structure, e.g., a photonic band gap material, exhibiting substantial periodicity on a micron scale is provided. Fabrication involves the steps of providing a template comprising a colloidal crystal, placing the template in an electrolytic solution, electrochemically forming a lattice material, e.g., a high refractive index material, on the colloidal crystal, and then removing the colloidal crystal particles to form the desired structure. The electrodeposition provides a dense, uniform lattice, because formation of the lattice material begins near a conductive substrate, for example, and growth occurs substantially along a plane moving in a single direction, e.g., normal to the conductive substrate. Moreover, because the electrochemically grown lattice is a three-dimensionally interconnected solid, there is very little shrinkage upon subsequent treatment.

    9.
    发明专利
    未知

    公开(公告)号:DE60000018D1

    公开(公告)日:2001-11-29

    申请号:DE60000018

    申请日:2000-01-31

    Abstract: A structure, e.g., a photonic band gap material, exhibiting substantial periodicity on a micron scale is provided. Fabrication involves the steps of providing a template comprising a colloidal crystal, placing the template in an electrolytic solution, electrochemically forming a lattice material, e.g., a high refractive index material, on the colloidal crystal, and then removing the colloidal crystal particles to form the desired structure. The electrodeposition provides a dense, uniform lattice, because formation of the lattice material begins near a conductive substrate, for example, and growth occurs substantially along a plane moving in a single direction, e.g., normal to the conductive substrate. Moreover, because the electrochemically grown lattice is a three-dimensionally interconnected solid, there is very little shrinkage upon subsequent treatment.

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