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    MANUFACTURE OF ARTICLE INCLUDING PLASTIC MADE OPTICAL FIBER
    1.
    发明专利
    MANUFACTURE OF ARTICLE INCLUDING PLASTIC MADE OPTICAL FIBER 失效

    公开(公告)号：JP2001027712A

    公开(公告)日：2001-01-30

    申请号：JP2000179739

    申请日：2000-06-15

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BLYLER LEE L JR ,  SHEVCHUK GEORGE JOHN ,  WHITE WHITNEY

    IPC: G02B6/24 ,  B26D7/08 ,  G02B6/00 ,  G02B6/25

    Abstract: PROBLEM TO BE SOLVED: To provide the method capable of connecting a plastic made optical fiber without being polished in a dry state. SOLUTION: An optical fiber is cut while being compressed in the axial direction (while pushing the optical fiber 21 with clamps 22, 23). When the optical fiber is cleaved (cleavage), it is pulled with a high strain rate to be broken after it is notched. The strain rate is set so that strain exists in the elastic zone until breaking or during breaking, that is, the optical fiber is subjected to such a strain rate that the optical fiber has no ductility and shows brittleness during from strain until breaking. The brittle characteristic is required for the smooth trailing end surface for promoting a low loss in unpolishing connection in a dry state.

    PLASTIC OPTICAL FIBER PRODUCTION PROCESS AND APPARATUS THEREFOR, AND PLASTIC OPTICAL FIBER
    2.
    发明专利
    PLASTIC OPTICAL FIBER PRODUCTION PROCESS AND APPARATUS THEREFOR, AND PLASTIC OPTICAL FIBER 失效

    公开(公告)号：JP2000356716A

    公开(公告)日：2000-12-26

    申请号：JP2000151547

    申请日：2000-05-23

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BLYLER LEE L JR ,  HART ARTHUR CLIFFORD JR ,  SALAMON TODD R ,  VIRIYAYUTHAKORN MONTRI

    IPC: G02B6/00 ,  B29C47/00 ,  B29C47/04 ,  B29C47/06 ,  B29C48/30 ,  B29D11/00 ,  G02B6/028 ,  B29C47/12 ,  G02B6/18

    Abstract: PROBLEM TO BE SOLVED: To provide a process for extrusion-molding a graded refractive index plastic optical fiber and an apparatus therefor. SOLUTION: This extrusion molding process has a step of introducing a polymer material for a first core into a first nozzle and a step of introducing a polymer material for a second clad into a second nozzle. At least one polymer material has a dopant having a refractive index for changing the refractive index of the polymer material. The nozzles are concentrically arranged. The first nozzle exists within the second nozzle. When the materials are introduced into a diffusion part 22, the materials simultaneously flow concentrically and the diffusion of the dopant is embodied between the first material and the second material and eventually the graded refractive indices are embodied. The first and second polymer materials move continuously through the diffusion part 22 and flows through an outlet side die and are then drawn out as a fiber.

    PRODUCTION OF GRADIENT REFRACTIVE INDEX PLASTIC OPTICAL FIBER
    3.
    发明专利
    PRODUCTION OF GRADIENT REFRACTIVE INDEX PLASTIC OPTICAL FIBER 失效

    公开(公告)号：JP2001116932A

    公开(公告)日：2001-04-27

    申请号：JP2000262016

    申请日：2000-08-31

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BLYLER LEE L JR ,  GRIMES GARY J ,  SHERMAN J CHARLES

    IPC: G02B6/00 ,  B29C47/00 ,  B29D11/00 ,  G02B6/028

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for efficiently producing a gradient refractive index optical fiber having a necessary optical transmission band. SOLUTION: A dopant is diffused by heating a plastic optical fiber up to temperature at which a high-rate diffusion state is caused while the transmission band of the plastic optical fiber is measured after a stepped refractive index plastic optical fiber is extruded or drawn. When a specific transmission band is measured, the plastic optical fiber is put back to ambient temperature immediately. Further, the plastic optical fiber is further heated gradually to balanced temperature right below the above temperature needed for the high-rate diffusion state. Once the temperature reaches the equilibrium temperature, further heating is carried out, the temperature is raised to the temperature needed for the high-rate diffusion, and the transmission band is inspected.

    TERMINAL FINISHING OF PLASTIC OPTICAL FIBER USING LASER ABLATION
    4.
    发明专利
    TERMINAL FINISHING OF PLASTIC OPTICAL FIBER USING LASER ABLATION 失效

    公开(公告)号：JP2001074942A

    公开(公告)日：2001-03-23

    申请号：JP2000228342

    申请日：2000-07-28

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BLYLER LEE L JR ,  COYLE RICHARD JAMES JR ,  GRIMES GARY J ,  SERAFINO ANTHONY JOSEPH ,  SHERMAN J CHARLES

    IPC: G02B6/36 ,  B23K26/00 ,  B23K26/08 ,  B29C67/00 ,  B29D11/00 ,  G02B6/00 ,  G02B6/25 ,  G02B6/255 ,  G02B6/38

    Abstract: PROBLEM TO BE SOLVED: To make an optical fiber terminal have a low-loss boundary with a light source, detector or another fiber by ablation the terminal of a plastic optical fiber by using an excimer laser. SOLUTION: The terminal of the optical fiber 106 is finished by ablating the terminal of the optical fiber 106 to remove a material containing cracks and interstices. An aperture 102 and lenses 103 and 104 are used to condense the light released by a laser 101 on the optical fiber 106. The light is condensed and is superposed on the optical fiber 106 and is condensed to the center of the optical fiber 106. The cracks and interstices are generated by the first cutting of the terminal of the optical fiber 106 and the oblation is resulted in consequence of the absorption of the UV light from the laser 101. Energy is absorbed only in the initial micron of the terminal surface of the optical fiber 106, by which the induction momentary removal of the material is induced. About one micron of the fiber is removed with each 3 to 5 pulses from the laser.

    5.
    发明专利
    未知

    公开(公告)号：BR0002427A

    公开(公告)日：2001-01-02

    申请号：BR0002427

    申请日：2000-05-18

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BLYLER LEE L JR ,  HART ARTHUR CLIFFORD JR ,  VIRIYAYUTHAKORN MONTRI ,  SALAMON TODD R

    IPC: G02B6/00 ,  B29C47/00 ,  B29C47/04 ,  B29C47/06 ,  B29C48/30 ,  B29D11/00 ,  G02B6/028

    Abstract: A continuous extrusion process is provided capable of producing graded index plastic optical fiber at commercially useful speeds, e.g., at least 1 m/sec for 250 mu m outer diameter fiber. Moreover, it is possible to predict the refractive index profile of the fiber, prior to actual fabrication, by performing a finite element analysis using various parameters of the extrusion process. Such prediction allows one to tune the parameters of the process to obtain a desirable outcome, while avoiding the need for substantial trial and error with the extrusion equipment.

    SYSTEM COMPRISING PLASTIC OPTICAL FIBER
    9.
    发明专利
    SYSTEM COMPRISING PLASTIC OPTICAL FIBER 未知

    公开(公告)号：CA2310720A1

    公开(公告)日：2000-12-17

    申请号：CA2310720

    申请日：2000-06-06

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： SHEVCHUK GEORGE JOHN ,  WHITE WHITNEY ,  BLYLER LEE L JR

    IPC: G02B6/24 ,  B26D7/08 ,  G02B6/00 ,  G02B6/25

    Abstract: The invention relates to plastic optical fiber (POF) processes and systems and involves improved non-polishing termination techniques. The techniques provide good physical and optical characteristics, i.e., smoothness, at the termination point, thereby providing lower losses than conventionally obtained. According to one embodiment, POF is cut while the fiber is under compression. According to another embodiment, the POF is notched and then pulled at a relatively high strain rate to induce fracture. The rate is such that the strain remains in the elastic region, i.e., the fiber exhibits brittle, as opposed to ductile, behavior during the strain. The brittle behavior provides a smooth termination surface, as opposed to a plastically-deformed surface.

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