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    3.
    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.

    4.
    发明专利
    未知

    公开(公告)号：DE69900113T2

    公开(公告)日：2001-12-06

    申请号：DE69900113

    申请日：1999-02-23

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BOHRER MICHAEL PHILIP ,  CHANDROSS EDWIN ARTHUR ,  MIXON DAVID ANTON ,  PSOTA-KELTY LINDA A ,  TREVOR DENNIS J

    IPC: B01D53/34 ,  B01D53/72 ,  B01D53/77 ,  C02F1/72

    Abstract: It has been found that in sol-gel processes utilizing TMAH, it is possible to treat a trimethylamine (TRIMA)-containing solution with hydrogen peroxide to form trimethylamine oxide - (CH3)3N -O- (TRIMAO), a water soluble compound which is less volatile and less odorous than TRIMA, and which is capable of being sent to a standard wastewater treatment plant. The hydrogen peroxide is generally added to the TRIMA-containing solution in a H2O2:TRIMA ratio of at least 3:1, advantageously at least 10:1. Because of the resultant TRIMAO solution's ability to be sent to a standard wastewater treatment facility, improved productivity and lowered expense of the overall fiber fabrication process are obtained. The invention is also suitable for treatment of triethylamine.

    7.
    发明专利
    未知

    公开(公告)号：DE69900369T2

    公开(公告)日：2002-06-27

    申请号：DE69900369

    申请日：1999-02-16

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHANDROSS EDWIN ARTHUR ,  KUCK VALERIE JEANNE ,  TAYLOR-SMITH RALPH E

    IPC: C08F2/46 ,  G03F7/00 ,  G03F7/004 ,  G03F7/075 ,  G03H1/04

    Abstract: An improved photorecording medium suitable for use in holographic storage systems contains a glassy hybrid inorganic-organic, three dimensional matrix, in which is distributed a photoimageable system comprising one or more photoactive, organic monomers. The medium is fabricated by providing a precursor of the hybrid inorganic-organic matrix, mixing the matrix precursor with the photoimageable system, and curing the matrix precursor to form the matrix in situ. The matrix and photoimageable system exhibit independent chemistries, such that the step of matrix formation does not substantially affect the photoimageable system. The hybrid matrix precursor is typically an oligomer derived from a compound represented by RnM(OR')4-n, where M is a metallic element having a valence of three or higher, such as silicon, titanium, germanium, zirconium, vanadium, or aluminum, R is an alkyl or aryl, R' is a lower alkyl, and n ranges from 1 to 2. The hybrid nature of the matrix material provides several advantages. The inorganic character offers thermal, mechanical, and chemical stability, and also reduces both the bulk viscoelastic creep and the bulk polymerization-induced shrinkage typically exhibited by media utilizing organic polymer matrices. The organic character provides compatibility between the matrix precursor and the organic components (e.g., the photoactive monomer) of the photoimageable system, allowing homogeneous mixing during fabrication of the medium. The organic moieties also offer some flexibility to the matrix, and, it appears, ease diffusion of the photoactive monomer within the matrix during exposure, thereby improving the process of storing data.

    9.
    发明专利
    未知

    公开(公告)号：DE69900369D1

    公开(公告)日：2001-11-29

    申请号：DE69900369

    申请日：1999-02-16

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHANDROSS EDWIN ARTHUR ,  KUCK VALERIE JEANNE ,  TAYLOR-SMITH RALPH E

    IPC: C08F2/46 ,  G03F7/00 ,  G03F7/004 ,  G03F7/075 ,  G03H1/04

    Abstract: An improved photorecording medium suitable for use in holographic storage systems contains a glassy hybrid inorganic-organic, three dimensional matrix, in which is distributed a photoimageable system comprising one or more photoactive, organic monomers. The medium is fabricated by providing a precursor of the hybrid inorganic-organic matrix, mixing the matrix precursor with the photoimageable system, and curing the matrix precursor to form the matrix in situ. The matrix and photoimageable system exhibit independent chemistries, such that the step of matrix formation does not substantially affect the photoimageable system. The hybrid matrix precursor is typically an oligomer derived from a compound represented by RnM(OR')4-n, where M is a metallic element having a valence of three or higher, such as silicon, titanium, germanium, zirconium, vanadium, or aluminum, R is an alkyl or aryl, R' is a lower alkyl, and n ranges from 1 to 2. The hybrid nature of the matrix material provides several advantages. The inorganic character offers thermal, mechanical, and chemical stability, and also reduces both the bulk viscoelastic creep and the bulk polymerization-induced shrinkage typically exhibited by media utilizing organic polymer matrices. The organic character provides compatibility between the matrix precursor and the organic components (e.g., the photoactive monomer) of the photoimageable system, allowing homogeneous mixing during fabrication of the medium. The organic moieties also offer some flexibility to the matrix, and, it appears, ease diffusion of the photoactive monomer within the matrix during exposure, thereby improving the process of storing data.

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