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    SPLITTER FOR FIBER OPTICS
    1.
    发明专利
    SPLITTER FOR FIBER OPTICS 未知

    公开(公告)号：CA1249468A

    公开(公告)日：1989-01-31

    申请号：CA456287

    申请日：1984-06-11

    Applicant: KAPTRON INC

    Inventor： KAPANY NARINDER S ,  UNTERLEITNER FRED C

    IPC: G02B6/28 ,  G02B6/35 ,  G02B6/26 ,  G02B26/02

    Abstract: IMPROVED SPLITTER FOR FIBER OPTICS A fiber optics splitter. In a first set of embodiments (10, 40), a two-way splitter comprises a transparent body having a spherical surface (30) which intercepts the entire light cone emanating from an input fiber, but has a reflective coating (30') on only part (typically one-half) to define a first reflector. A second spherical reflector (35, 45) is located behind it to intercept and image the remaining light. In a second set of embodiments (50, 60), a two-way splitter utilizes a transparent body having a portion defining a spherical reflective surface segment (53) intercepting and imaging part of the light cone to define the first reflector. The second spherical reflector (35, 45) is disposed downstream thereof to intercept and image the remaining light.

    HYBRID ACTIVE DEVICES COUPLED TO FIBER VIA SPHERICAL REFLECTORS
    2.
    发明专利
    HYBRID ACTIVE DEVICES COUPLED TO FIBER VIA SPHERICAL REFLECTORS 未知

    公开(公告)号：CA2012562A1

    公开(公告)日：1990-09-20

    申请号：CA2012562

    申请日：1990-03-20

    Applicant: KAPTRON INC

    Inventor： KAPANY NARINDER S ,  UNTERLEITNER FRED C

    IPC: G02B6/32 ,  G02B6/34 ,  G02B6/42 ,  H01S5/14

    Abstract: HYBRID ACTIVE DEVICES COUPLED TO FIBER VIA SPHERICAL REFLECTORS Multiple reflection modules having as a light source or a light target a lensed optical fiber employ one more spherical reflectors and wavelength selectors for selecting the wavelengths of optical radiation on selected optical paths between said light source and said light target. The reflection module may be a multiplexer or a laser cavity. As a laser, it may include as a source a semiconductor laser comprising a laser source disposed to direct radiation through a first multiple layer dielectric Fabry-Perot cavity with the center of curvature between the source and a fiber tip to which output energy is to be coupled, and a second reflector mounted behind the first reflector, the second reflector being a full reflector with the center of curvature at the laser source. The first reflector may have a narrow-band optical transmissivity characteristic intended to permit only a narrow band of optical radiation to be coupled to the full reflector, the full reflector disposed as a confocal reflective surface of the laser cavity. Reflections from the first reflector are coupled to a tip of an optical fiber. Other embodiments of the invention are configured as multiplexers. Still other embodiments employ a diffraction grating as part of a laser cavity or as a frequency-selective multiplexer.

    FIBER OPTICS COMMUNICATION MODULES
    4.
    发明专利
    FIBER OPTICS COMMUNICATION MODULES 未知

    公开(公告)号：CA1249466A

    公开(公告)日：1989-01-31

    申请号：CA435531

    申请日：1983-08-29

    Applicant: KAPTRON INC

    Inventor： KAPANY NARINDER S ,  UNTERLEITNER FRED C

    IPC: G02B6/34 ,  G02B6/26 ,  G02B6/28 ,  G02B27/10

    Abstract: The present invention provides modules for interfacing optical fibers with very low light loss and with provision for monitoring of the optical signal. The modules according to the present invention are characterized by the precise tolerances required in high capacity optical communication systems and yet may be mass produced at reasonable costs. One device according to the present invention comprises an imaging element having a spaced pair of curved reflective surface at one end and prealigned fiber insertion holes at the other end. The input and output terminals of the couplers may be configured so that a small number of basic coupler structures may be used to perform a wide variety of functions. A coupler according to the present invention includes a first spherical reflective surface characterized by a self-conjugate plane having the property that a point source of light in the self-conjugate plane is imaged in the self-conjugate plane and a second spherical reflective surface disposed between said first spherical reflective surface and the self-conjugate plane, said second spherical reflective surface defining means having the properties that a point source of light within a first selected wavelength range and in said focal plane is imaged by a dichroic medium in said focal plane, and that a point source of light outside of said selected wavelength range and in said focal plane passes through said second spherical reflective surface defining means and is imaged in said focal plane by said first spherical reflective surface defining means. Various embodiments of the invention are disclosed.

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