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    FREE SPACE OPTICAL SIGNAL SWITCHING DEVICE
    2.
    发明专利
    FREE SPACE OPTICAL SIGNAL SWITCHING DEVICE 失效

    公开(公告)号：JPH11231232A

    公开(公告)日：1999-08-27

    申请号：JP34499798

    申请日：1998-12-04

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FATEHI MOHAMMAD T ,  FORD JOSEPH EARL

    IPC: G02B26/08 ,  H04Q11/00

    Abstract: PROBLEM TO BE SOLVED: To provide a free space optical switching array device using only orientation of optical transmitter beams. SOLUTION: Optical signal switching (OXC) from N transmitter to M receivers in free spaces (N and M are larger than 1) requires only transmitter beam orientation for controlling to which receiver 230 the optical signals from the transmitters 210 should be sent. It is preferred that the transmitters 210 process single mod optical signal, and the receiver 230 process multiple mode optical signals. OXC may optionally include fixed an optical unit packaged using either a single fixed common lens or plural M pieces of optical elements for further orienting each of the M pieces of optical signals to their individual receivers 230.

    OPTICAL FIBER COMMUNICATION SYSTEM
    3.
    发明专利
    OPTICAL FIBER COMMUNICATION SYSTEM 失效

    公开(公告)号：JP2001042232A

    公开(公告)日：2001-02-16

    申请号：JP2000178073

    申请日：2000-06-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FORD JOSEPH EARL ,  KEITH WAIN GOOSEN ,  CHRISTIE K MADSEN ,  WALKER JAMES ALBERT

    IPC: G02B26/06 ,  G02B5/28 ,  G02B6/34 ,  H04B10/02 ,  H04B10/18 ,  H04J14/00 ,  H04J14/02

    Abstract: PROBLEM TO BE SOLVED: To provide a wide optical wavelength (WDM) communication system whose loss is low, whose polarity dependency is low and which realizes compensation over wide band width by providing an adjustable multichannel dispersion compensating fiber whose loss is low, whose polarity dependency is low and which has a function capable of compensating many channels over a wide wavelength range. SOLUTION: This WDM optical fiber communication system 10 is provided with a multiple wavelength light transmitter 11, an optical fiber for transmission 12, and the adjustable multichannel dispersion compensating fiber 13 for compensating the dispersion of the optical fiber 12. The fiber 13 is provided with a variable partial reflector 19, a fixing mirror 29 and an optical cavity 27 arranged on an optical path between the reflector 19 and the mirror 29. On parallel side surface 28 and the mirror 29 regulate the optical cavity having thickness L. The thickness L is selected so that a free spectral range(FSR) may be the integral multiple of space between the optical channels of the system. Thus, many channels are simultaneously compensated.

    NETWORK INTERFACE UNIT
    4.
    发明专利
    NETWORK INTERFACE UNIT 失效

    公开(公告)号：JP2000341359A

    公开(公告)日：2000-12-08

    申请号：JP2000104827

    申请日：2000-04-06

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FORD JOSEPH EARL ,  KRISHNAMOORTHY ASHOK V

    IPC: G06F3/00 ,  H04B10/20 ,  H04L29/06 ,  H04Q11/00

    Abstract: PROBLEM TO BE SOLVED: To provide a network interface unit that inexpensively and efficiently conducts re-configuration of ports in a communication network. SOLUTION: The network interface unit has a plurality of optical ports 106 that are used for communication with a network, a plurality of electronic circuits 112, and an electronic switch 110 that are placed between a plurality of the optical ports and a plurality of the electronic circuits and reconfigures connection between any selected port among a plurality of the optical ports and any of the electronic circuits. The network interface unit has an integrated structure.

    SPECTROSCOPE FOR MONITORING ELECTRIC COMMUNICATION SIGNAL
    5.
    发明专利
    SPECTROSCOPE FOR MONITORING ELECTRIC COMMUNICATION SIGNAL 失效

    公开(公告)号：JP2000082838A

    公开(公告)日：2000-03-21

    申请号：JP6574399

    申请日：1999-03-12

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FORD JOSEPH EARL ,  WOODWARD TED K

    IPC: H01L31/10 ,  G01J3/18 ,  G01J3/28 ,  G01J3/36 ,  G02B6/34 ,  G02B6/42 ,  H04B10/02

    Abstract: PROBLEM TO BE SOLVED: To obtain perfect and detailed data on each WDM signal by a method wherein signals are processed by detectors that detect each at least signal of a certain wavelength linearly and processor chips provided integrally with the detectors. SOLUTION: For instance, by use of a free spatial optics, signal wavelengths of WDM signals inputted through one or more input fibers are dispersed or demultiplexed on detector/processor chips. The above signals are received through an input fiber array 301 composed of M fibers. An optical output from the fiber array 301 is collected on a planar diffraction grating 303 through a collimating lens 302. The planar diffraction grating 303 diffracts the optical signals and returns them to the collimating lens 302, and the optical signals are collected on an opto-electronic chip 304. The opto-electronic chip 304 comprises a two-dimensional array of detectors and detects light signals. Then, the signals are processed with processor chips provided integrally with the detectors.

    7.
    发明专利
    未知

    公开(公告)号：ATE410847T1

    公开(公告)日：2008-10-15

    申请号：AT00303681

    申请日：2000-05-03

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DRAGONE CORRADO PIETRO ,  FORD JOSEPH EARL

    IPC: G02B6/12 ,  G02B6/293 ,  G02B6/34 ,  G02B6/35 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00

    Abstract: A router combines free-space and guided wave optics to drastically increase the number of channels used in WDM transmission systems. The two-stage router uses the partial demultiplexing characteristic of an arrayed waveguide router (AWR) combined with a free-space optical router to fully demultiplex an input WDM signal. The two-stage router can be used to obtain output wavelength signals in either one- or two- dimensional arrays.

    8.
    发明专利
    未知

    公开(公告)号：AT410847T

    公开(公告)日：2008-10-15

    申请号：AT00303681

    申请日：2000-05-03

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DRAGONE CORRADO PIETRO ,  FORD JOSEPH EARL

    IPC: G02B6/12 ,  H04J14/02 ,  G02B6/293 ,  G02B6/34 ,  G02B6/35 ,  H04B10/02 ,  H04J14/00 ,  H04Q11/00

    Abstract: A router combines free-space and guided wave optics to drastically increase the number of channels used in WDM transmission systems. The two-stage router uses the partial demultiplexing characteristic of an arrayed waveguide router (AWR) combined with a free-space optical router to fully demultiplex an input WDM signal. The two-stage router can be used to obtain output wavelength signals in either one- or two- dimensional arrays.

    OPTICAL MEMS SWITCH WITH IMAGING SYSTEM
    9.
    发明专利
    OPTICAL MEMS SWITCH WITH IMAGING SYSTEM 未知

    公开(公告)号：CA2384071A1

    公开(公告)日：2002-12-29

    申请号：CA2384071

    申请日：2002-04-30

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： RYF ROLAND ,  NEILSON DAVID THOMAS ,  FORD JOSEPH EARL ,  GILES RANDY CLINTON

    IPC: G02B6/35 ,  G02B6/43 ,  G02B26/08

    Abstract: In an all optical switch an imaging system is interposed between the micro lens array and the moveable micro mirrors of a MEMS device to which, or from whic h, the light beams are directed. This causes an image of the micro lens array to be formed at the MEMS device, or vice-versa, thus effectively eliminating the distance between the micro lens array and the MEMS device. The imaging system may be a telecentri c system. The size of the arrangement may be reduced by compacting the optical path, e.g., using appropriate conventional mirrors, and/or employing folded arrangements, i.e., arrangements in which there is only one MEMS device stage that does double duty for both input and output through the use of at least one conventional mirro r. The overall system is arranged to account for any inversions introduced.

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