Optical-to-wireless WDM converter

    公开(公告)号:US20040234273A1

    公开(公告)日:2004-11-25

    申请号:US10873897

    申请日:2004-06-21

    CPC classification number: H04B10/64 H04B10/25752 H04B10/60

    Abstract: In a method and apparatus for converting optical wavelength division multiplexed channels to wireless channels, the information carrying optical carriers are first de-multiplexed and each optical carrier is then extracted from the data using an optical channelizing technique. The optical frequency of each of the extracted optical carriers is then shifted by an amount equal to the desired wireless carrier frequencies in the broadband wireless channels. Optical heterodyning of the frequency-shifted extracted lightwave carriers with the original data-containing optical signals, which are mutually in phase coherence, in a photodetector results in a set of wireless carriers each modulated with the data carried by the corresponding optical channel.

    Continuously tunable MEMs-based phase shifter
    2.
    发明申请
    Continuously tunable MEMs-based phase shifter 失效
    连续可调谐的基于MEMs的移相器

    公开(公告)号:US20020186098A1

    公开(公告)日:2002-12-12

    申请号:US09802151

    申请日:2001-03-08

    Inventor: Keyvan Sayyah

    CPC classification number: H03H11/20

    Abstract: A phase shifter comprises a coarse phase tuning arrangement and a fine phase tuning arrangement. The coarse phase tuning arrangement provides a discrete number of phase shifts. The fine phase tuning arrangement includes a RLC network, having a resistor, an inductor and a capacitor. The fine phase tuning arrangement also comprises an optical arrangement for varying the resistance value of the resistor. This phase shifter is able to obtain broadband, continuous 360null phase shifting also at Gigahertz frequencies. It also allows close to linear phase shift versus frequency resulting in true time delay capability, very low insertion loss and high value of maximum phase adjust.

    Abstract translation: 移相器包括粗相调谐装置和精细相位调谐装置。 粗相调谐装置提供离散数量的相移。 精细相位调谐装置包括具有电阻器,电感器和电容器的RLC网络。 精细相位调谐装置还包括用于改变电阻器的电阻值的光学装置。 该移相器能够以千兆赫兹频率获得宽带,连续的360°相移。 它还允许接近线性相移与频率,导致真实的时间延迟能力,非常低的插入损耗和最大相位调整的高值。

    Optical-to-wireless WDM converter
    3.
    发明申请
    Optical-to-wireless WDM converter 有权
    光无线WDM转换器

    公开(公告)号:US20040228638A1

    公开(公告)日:2004-11-18

    申请号:US10873898

    申请日:2004-06-21

    CPC classification number: H04B10/64 H04B10/25752 H04B10/60

    Abstract: In a method and apparatus for converting optical wavelength division multiplexed channels to wireless channels, the information carrying optical carriers are first de-multiplexed and each optical carrier is then extracted from the data using an optical channelizing technique. The optical frequency of each of the extracted optical carriers is then shifted by an amount equal to the desired wireless carrier frequencies in the broadband wireless channels. Optical heterodyning of the frequency-shifted extracted lightwave carriers with the original data-containing optical signals, which are mutually in phase coherence, in a photodetector results in a set of wireless carriers each modulated with the data carried by the corresponding optical channel.

    Abstract translation: 在将光波分复用信道转换为无线信道的方法和装置中,首先对携带载波的光载波进行解复用,然后使用光信道化技术从数据中提取每个光载波。 然后,每个提取的光载波的光频率移动等于宽带无线信道中期望的无线载波频率的量。 在光电检测器中具有相位相干的带原始数据的光信号的频移提取的光波载波的光学外差产生一组无线载波,每一个无线载波用相应光信道承载的数据进行调制。

    Agile spread waveform generator
    4.
    发明申请
    Agile spread waveform generator 有权
    敏捷扩展波形发生器

    公开(公告)号:US20030091097A1

    公开(公告)日:2003-05-15

    申请号:US10116829

    申请日:2002-04-05

    CPC classification number: G02F2/002

    Abstract: An agile spread spectrum waveform generator comprises a photonic oscillator and an optical heterodyne synthesizer. The photonic oscillator comprises a multi-tone optical comb generator for generating a series of RF comb lines on an optical carrier. The optical heterodyne synthesizer includes first and second phase-locked lasers; the first laser feeding the multi-tone optical comb generator and the second laser comprising a rapidly wavelength-tunable single tone laser whose output light provides a frequency translation reference. A photodetector is provided for heterodyning the frequency translation reference with the optical output of the photonic oscillator to generate an agile spread spectrum waveform.

    Abstract translation: 敏捷扩频波形发生器包括光子振荡器和光学外差合成器。 光子振荡器包括用于在光学载体上产生一系列RF梳状线的多色调光梳发生器。 光外差合成器包括第一和第二锁相激光器; 所述第一激光器馈送所述多色调光梳发生器,所述第二激光器包括其输出光提供频率转换参考的快速波长可调单色激光器。 提供光电检测器用于使频率转换参考用光子振荡器的光输出进行外差以产生敏捷扩频波形。

    Ultra-dense wavelength and subcarrier multiplexed optical and RF/mm-wave transmission system
    5.
    发明申请
    Ultra-dense wavelength and subcarrier multiplexed optical and RF/mm-wave transmission system 失效
    超密度波长和副载波复用光和RF / mm波传输系统

    公开(公告)号:US20040258420A1

    公开(公告)日:2004-12-23

    申请号:US10773945

    申请日:2004-02-06

    Inventor: Keyvan Sayyah

    CPC classification number: H04B10/25752

    Abstract: Disclosed is a method and apparatus for optically modulating and transmitting source data. An optical comb comprising optical tones having a frequency spacing equal to nullf is generated by an optical comb generator. Selected ones of the optical tones in the optical comb are modulated according to the source data to produce a comb of modulated optical tones. At least one optical tone in the optical comb is frequency shifted by a frequency less than nullf to produce a frequency shifted unmodulated optical reference tone. The optical comb, the frequency shifted unmodulated optical reference tone and the comb of modulated tones are multiplexed onto at least one optical path.

    Abstract translation: 公开了用于光学调制和传输源数据的方法和装置。 包括具有等于Deltaf的频率间隔的光学音调的光梳由光梳发生器产生。 根据源数据对光梳中的所选光调制进行调制以产生调制光调的梳状。 光梳中的至少一个光学色调以小于Deltaf的频率偏移以产生频移未调制的光学参考色调。 光梳,频移未调制的光参考色调和调制色调梳被复用到至少一个光路上。

    Agile RF-lightwave waveform synthesis and an optical multi-tone amplitude modulator
    7.
    发明申请
    Agile RF-lightwave waveform synthesis and an optical multi-tone amplitude modulator 失效
    敏捷射频波浪波形合成和光学多音调振幅调制器

    公开(公告)号:US20030090767A1

    公开(公告)日:2003-05-15

    申请号:US10116801

    申请日:2002-04-05

    Abstract: A waveform synthesizer comprising for synthesizing RF lightwave waveforms in the optical domain. These waveforms are constructed by generating their constituent Fourier frequency components or tones and then adjusting the amplitudes of those frequency components or tones. The apparatus includes: a RF-lightwave frequency-comb generator; and a multi-tone, frequency selective amplitude modulator coupled to the RF-lightwave frequency-comb generator for generating a continuous-wave comb comprising a set of RF tones amplitude modulated onto a lightwave carrier.

    Abstract translation: 一种波形合成器,包括用于在光学域中合成RF光波形的波形。 这些波形是通过产生它们的组成的傅里叶频率分量或音调然后调整这些频率分量或音调的振幅而构成的。 该装置包括:RF-光波频梳发生器; 以及耦合到所述RF-光波频率梳发生器的多音调频率选择幅度调制器,用于产生包括调制到光波载波上的一组RF音调的连续波梳。

    Injection-seeding of a multi-tone photonic oscillator
    8.
    发明申请
    Injection-seeding of a multi-tone photonic oscillator 失效
    多色子光子振荡器的注入

    公开(公告)号:US20030089843A1

    公开(公告)日:2003-05-15

    申请号:US10116799

    申请日:2002-04-05

    CPC classification number: H04B1/0475

    Abstract: A multi-tone photonic oscillator comprises a laser; an optical modulator coupled to the laser; and a delay line and a photodetector coupled to the optical modulator for generating a delayed electrical signal representation of the output of the optical modulator; wherein the optical modulator being responsible for the delayed electrical signal for generating multiple tones where the frequency intervals of the tones is a function of the amount of delay imposed by the delay line.

    Abstract translation: 一个多色调光子振荡器包括一个激光器; 耦合到激光器的光学调制器; 以及耦合到所述光调制器的延迟线和光电检测器,用于产生所述光调制器的输出的延迟电信号表示; 其中所述光调制器负责延迟的电信号以产生多个音调,其中音调的频率间隔是由延迟线施加的延迟量的函数。

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