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    PRODUCTION OF SILICA PRODUCT
    1.
    发明专利
    PRODUCTION OF SILICA PRODUCT 失效

    公开(公告)号：JPH11171559A

    公开(公告)日：1999-06-29

    申请号：JP27077998

    申请日：1998-09-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHEN YOU-LUNG ,  PATEL SANJAY ,  VALDES JORGE LUIS

    IPC: C03B8/02 ,  C03B20/00 ,  C03B37/012 ,  C03C1/00

    Abstract: PROBLEM TO BE SOLVED: To provide a new sol-gel process using only very small amounts of a stabilizer such as TMAH(tetramethylammonium hydroxide) and a gelation agent such as methyl formate. SOLUTION: In this production, by using a single stabilization/gelation agent which is capable of initially, stabilizing or assisting in stabilizing a liquid dispersion and then, being converted in situ into a gelation agent for inducing gelation of the liquid dispersion, the respective required amounts of a conventional stabilizer and a conventional gelation agent, both of which are required for bringing about both the stabilization effect and the gelation effect, can be reduced. Accordingly, this sol-gel process is superior to a conventional solgel process. The initial stabilization effect of the stabilization/gelation agent enables a remarkable reduction in required amount of an undesirable stabilizer such as TMAH. Further, since the stabilization/gelation agent itself is converted into a substance capable of contributing to gelation, only a very small amount of a conventional gelation agent such as methyl formate is required.

    COMPOSITION AND OPTICAL FIBER COATED THEREWITH
    2.
    发明专利
    COMPOSITION AND OPTICAL FIBER COATED THEREWITH 失效

    公开(公告)号：JPH1135847A

    公开(公告)日：1999-02-09

    申请号：JP36672097

    申请日：1997-12-26

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： HALE ARTURO ,  BLYLER LEE LANDIS JR ,  PATEL SANJAY

    IPC: G02B6/44 ,  C03C25/10 ,  C03C25/24 ,  C08F2/48 ,  C08F8/42 ,  C08F290/06 ,  C08L55/00 ,  C09D4/00 ,  G02B6/02 ,  C03C25/02

    Abstract: PROBLEM TO BE SOLVED: To obtain an optical fiber improved in the adhesive force between the glass and a photocurable coating film. SOLUTION: This composition comprises a photocurable or electron beam- curable composition and a setting agent, being useful for producing coated optical fibers; wherein the setting agent bears an alkoxysilane functional group bound via the long main chain to the reactive group copolymerizable with the photocurable or electron beam-curable composition; the alkoxy-substituted organosilane group-contg. compound is conjugatedly bound to a relatively long molecule having (meth)acrylate functional group; as part of the photocurable coating material, the long chain raises the adhesive force of the coating material to a glass substrate through conjugatedly binding a high-molecular network texture to the glass substrate.

    RECORDING MEDIUM AND HOLOGRAPHIC PROCESS FOR FORMATION OF THE SAME
    4.
    发明专利
    RECORDING MEDIUM AND HOLOGRAPHIC PROCESS FOR FORMATION OF THE SAME 失效

    公开(公告)号：JP2000172154A

    公开(公告)日：2000-06-23

    申请号：JP34800299

    申请日：1999-12-07

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHANDROSS EDWIN A ,  RISA DAHL ,  MARY ELLEN GARBIN-DONOGUU ,  HARRIS ALEXANDER LOWE ,  PATEL SANJAY ,  MARCIA LEE SHILLING ,  SCHNOES MELINDA LAMONT ,  PIERRE UIRUCHISU

    IPC: G11C13/04 ,  G03F7/00 ,  G03H1/02 ,  G03H1/04 ,  G03H1/26

    Abstract: PROBLEM TO BE SOLVED: To obtain an improved recording medium in which a hologram shows desirable properties by including a fixing step to subject the recording medium to fixing after irradiation of light so as to allow the residual photopolymerizable component to react. SOLUTION: A data image is stored to an optical medium 14 by the interference of coded signal beams 20 and reference beams 22. A hologram is produced by the interference, and the hologram is trapped in the medium as a pattern of variable refractive indices. While irradiating a matrix of the medium with light, one or more photopolymerizable components are polymerized, and then after irradiation, the medium is fixed to obtain the permanent hologram. By this method, different from a conventional medium containing a perforated matrix, Bragg detune caused during forming the hologram or Bragg detune due to the temp. change are small so that the life on the recording face of the recorded hologram or fidelity of recording can be improved.

    OPTICAL RECORDING MEDIUM, ITS PRODUCTION AND HOLOGRAPHIC SYSTEM USING SAME
    5.
    发明专利
    OPTICAL RECORDING MEDIUM, ITS PRODUCTION AND HOLOGRAPHIC SYSTEM USING SAME 失效

    公开(公告)号：JP2000250382A

    公开(公告)日：2000-09-14

    申请号：JP2000055086

    申请日：2000-03-01

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHANDROSS EDWIN A ,  GALVIN-DONOGHUE MARY ELLEN ,  NEENAN THOMAS XAVIER ,  PATEL SANJAY

    IPC: G03H1/02 ,  G03F7/00 ,  G03F7/095

    Abstract: PROBLEM TO BE SOLVED: To ensure a desired hardness, phase separation and holographic characteristics by using an optical recording medium containing a polymer matrix and a system containing a photoactive monomer and capable of optically forming an image and by forming the polymer matrix by a polymerization reaction independent of a reaction by which the photoactive monomer is polymer ized. SOLUTION: A mixture of a polymer matrix and a system comprising a photoactive monomer and capable of optically forming an image is prepared and a precursor of the polymer matrix is hardened at the original spot to form the polymer matrix. In the hardening step, the matrix and the system capable of optically forming the image cause phase separation and show a Rayleigh ratio of about

    SUBSTANCE OF MUTUALLY CONNECTED LATTICES EXHIBITING PERIODICITY AND ITS PRODUCTION
    6.
    发明专利
    SUBSTANCE OF MUTUALLY CONNECTED LATTICES EXHIBITING PERIODICITY AND ITS PRODUCTION 失效

    公开(公告)号：JP2000233999A

    公开(公告)日：2000-08-29

    申请号：JP2000029412

    申请日：2000-02-07

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： PAUL VANNEST BROWN ,  PATEL SANJAY ,  PIERRE WIRUCHIIUSU

    IPC: C30B29/62 ,  G02B5/20 ,  G02B6/12 ,  H01L21/02

    Abstract: PROBLEM TO BE SOLVED: To produce a substance comprising a material exhibiting periodicity by introducing a liquid dispersion of nanoparticles having a specified particle diameter into the crystals of a template comprising colloid crystals to form a mutually connected structure and then removing the colloid crystals. SOLUTION: A template of colloid crystals comprising polystyrene, polymethyl methacrylate and silica is prepared. The average grain diameter of the colloid crystals is about 100 nm to 5 μm. A liquid dispersion of nanoparticles whose average diameter is about 1 nm or 30%, preferably about 10%, of the average diameter of the colloid crystals is introduced into the colloid crystals to form a coherent structure from the nanoparticles. The nanoparticles comprise titania, silicon, germanium or gallium phosphide. Colloid crystals are then removed from the resulting composite material by heating or acid etching to obtain the objective photonic band gap substance exhibiting periodicity.

    7.
    发明专利
    未知

    公开(公告)号：DE69902346D1

    公开(公告)日：2002-09-05

    申请号：DE69902346

    申请日：1999-11-30

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHANDROSS EDWIN ARTHUR ,  DHAR LISA ,  GALVIN-DONOGHUE MARY ELLEN ,  LOWE-HARRIS ALEXANDER ,  PATEL SANJAY ,  SCHILLING MARCIA LEA ,  SCHNOES MELINDA LAMONT ,  WILTZIUS PIERRE

    IPC: G11C13/04 ,  G03F7/00 ,  G03H1/02 ,  G03H1/04 ,  G03H1/26

    Abstract: An improved recording medium is provided having a rigid porous matrix containing a photoimageable system. In contrast to previous media containing porous matrices, the invention allows readable holograms to be written in a medium without the need for solvent processing steps subsequent to irradiation. Due to the rigid nature of the matrix, polymerization and/or diffusion during formation of each individual hologram induces only a small level of Bragg detuning. Temperature fluctuations similarly induce only a small Bragg shift. Improved archival life of recorded holograms and improved fidelity of read-out, as well as improved optical elements, are thereby attained. And the avoidance of solvent processing makes the process of recording holograms far easier than in previous porous matrix-based media.

    9.
    发明专利
    未知

    公开(公告)号：DE69902346T2

    公开(公告)日：2003-03-27

    申请号：DE69902346

    申请日：1999-11-30

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHANDROSS EDWIN ARTHUR ,  DHAR LISA ,  GALVIN-DONOGHUE MARY ELLEN ,  LOWE-HARRIS ALEXANDER ,  PATEL SANJAY ,  SCHILLING MARCIA LEA ,  SCHNOES MELINDA LAMONT ,  WILTZIUS PIERRE

    IPC: G11C13/04 ,  G03F7/00 ,  G03H1/02 ,  G03H1/04 ,  G03H1/26

    Abstract: An improved recording medium is provided having a rigid porous matrix containing a photoimageable system. In contrast to previous media containing porous matrices, the invention allows readable holograms to be written in a medium without the need for solvent processing steps subsequent to irradiation. Due to the rigid nature of the matrix, polymerization and/or diffusion during formation of each individual hologram induces only a small level of Bragg detuning. Temperature fluctuations similarly induce only a small Bragg shift. Improved archival life of recorded holograms and improved fidelity of read-out, as well as improved optical elements, are thereby attained. And the avoidance of solvent processing makes the process of recording holograms far easier than in previous porous matrix-based media.

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