IMAGING TECHNIQUE FOR USE WITH OPTICAL MEMS DEVICES

    公开(公告)号:CA2384072A1

    公开(公告)日:2002-12-29

    申请号:CA2384072

    申请日:2002-04-30

    Abstract: Using an imaging system, an optical MEMS devices is imaged so that in combination with an actual one or more other optical MEMS devices, or images thereof, a single virtual optical MEMS device is formed that has the size of each of the optical MEMS devices combined. The physical 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 mirror. The imaging system may reproduce the angle of reflection of the light from the micro mirror, e.g., using a telecentric system. A prism m ay be employed to align the various optical MEMS devices, or images thereof.

    MEMS VARIABLE OPTICAL DELAY LINES
    12.
    发明专利

    公开(公告)号:CA2323914A1

    公开(公告)日:2001-05-10

    申请号:CA2323914

    申请日:2000-10-19

    Abstract: A variable optical delay line using MEMS devices. A reflector on a micro machine linear rack is positioned and spaced from an input source and/ or an output to receive and reflect input light waves toward the output. The ditstance between the reflector and the input and output is variable and thereby ennables selective path delay compensation of the input light wave signals. Other disclosed embodiments utilize pivoting MEMS mirrors and selective adjustment of the mirror pivot angles to provide the selective path delay compensation required in a light wave system.

    14.
    发明专利
    未知

    公开(公告)号:DE602007006024D1

    公开(公告)日:2010-06-02

    申请号:DE602007006024

    申请日:2007-07-12

    Abstract: Methods and apparatus are described for generating and receiving amplitude and differential-phase encoded signals in which the number of phase states at a given amplitude level is always less than or equal to that at a higher amplitude level and at least two amplitude levels have different numbers of phase states.

    15.
    发明专利
    未知

    公开(公告)号:DE60036683T2

    公开(公告)日:2008-07-17

    申请号:DE60036683

    申请日:2000-11-20

    Abstract: An optical device for routing a plurality of optical signals between a first port and a second port is disclosed. The optical device includes a mirror array having a plurality of reflective elements. Each optical input signal is directed by a reflective element in a direction designated by a control signal. The optical device further includes a curved mirror for receiving each directed optical signal from the respective reflective element, and for reflecting each directed optical signal to the first or second port.

    16.
    发明专利
    未知

    公开(公告)号:DE60036683D1

    公开(公告)日:2007-11-22

    申请号:DE60036683

    申请日:2000-11-20

    Abstract: An optical device for routing a plurality of optical signals between a first port and a second port is disclosed. The optical device includes a mirror array having a plurality of reflective elements. Each optical input signal is directed by a reflective element in a direction designated by a control signal. The optical device further includes a curved mirror for receiving each directed optical signal from the respective reflective element, and for reflecting each directed optical signal to the first or second port.

    IMAGING TECHNIQUE FOR USE WITH OPTICAL MEMS DEVICES

    公开(公告)号:CA2384072C

    公开(公告)日:2005-08-30

    申请号:CA2384072

    申请日:2002-04-30

    Abstract: Using an imaging system, an optical MEMS devices is imaged so that in combination with an actual one or more other optical MEMS devices, or images thereof, a single virtual optical MEMS device is formed that has the size of each of the optical MEMS devices combined. The physical 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 mirror. The imaging system may reproduce the angle of reflection of the light from the micro mirror, e.g., using a telecentric system. A prism m ay be employed to align the various optical MEMS devices, or images thereof.

    18.
    发明专利
    未知

    公开(公告)号:DE60034287T2

    公开(公告)日:2007-12-20

    申请号:DE60034287

    申请日:2000-10-03

    Abstract: An optical crossconnect (OXC) fabric including an array of tiltable mirrors, a reflector and a plurality of optical fibers controls the position of the mirrors to optimize the transfer of a signal between an input optical fiber and an output optical fiber by monitoring the optical signal at an optical translation unit in each of the input optical fiber and the output optical fiber. The optical translation units are operable for regenerating the optical signals transmitted through the fibers.

    PHASE LOCKING IN A MULTI-CHANNEL QUANTUM COMMUNICATION SYSTEM

    公开(公告)号:CA2607318A1

    公开(公告)日:2006-11-23

    申请号:CA2607318

    申请日:2006-04-25

    Abstract: A communication system adapted to use wavelength (frequency) division multiplexing for quantum-key distribution (QKD) and having a transmitter coupled to a receiver via a transmission link. In one embodiment, the receiv er is adapted to (i) phase- shift a local oscillator (LO) signal generated at t he receiver, (ii) combine the LO signal with a quantum-information (QI) signal received via the transmission link from the transmitter to produce interference signals, (iii) measure an intensity difference for these interference signals, and (iv) phase-lock the LO signal to the QI signal bas ed on the measurement result, hi one configuration, the QI signal has a plurali ty of pilot frequency components, each carrying a training signal, and a plurality of QKD frequency components, each carrying quantum key data. Advantageously, the system can maintain a phase lock for the QKD frequency components of the QI and LO signals, while the QKD frequency components of t he QI signal continuously carry quantum key data.

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