Waveguide assembly for a microwave receiver with electro-optic modulator
    21.
    发明授权
    Waveguide assembly for a microwave receiver with electro-optic modulator 有权
    用于具有电光调制器的微波接收器的波导组件

    公开(公告)号:US08995838B1

    公开(公告)日:2015-03-31

    申请号:US12959287

    申请日:2010-12-02

    Abstract: A waveguide assembly for a use with, for example, a microwave receiver. The waveguide assembly includes: a waveguide; a tapered structure disposed within the waveguide, the tapered structure tapering in thickness from a first end with a zero height to a second end where the tapered structure has a height which nearly fills, but does not completely fill, the waveguide, to thereby define a modulator receiving space between the tapered structure and an adjacent wall of said waveguide. The second end of the tapered structure is preferably disposed adjacent an open circuited end of the waveguide. An electro-optic modulator is disposed on a dielectric substrate, the dielectric substrate being disposed at least partially within the modulator receiving space and the electro-optic modulator being disposed so that it is located, in use, at an antinode of a standing wave of the waveguide assembly.

    Abstract translation: 用于与例如微波接收器一起使用的波导组件。 波导组件包括:波导; 布置在波导内的锥形结构,锥形结构从具有零高度的第一端到第二端的厚度渐缩,其中锥形结构具有几乎填充但不完全填充波导的高度,从而限定了 调制器在所述锥形结构和所述波导的相邻壁之间接收空间。 锥形结构的第二端优选地设置在波导的开路端附近。 将电光调制器设置在电介质基片上,电介质基底至少部分地设置在调制器接收空间内,电光调制器被设置为使得它在使用中位于驻波的波腹处 波导组件。

    RF receiver front-end assembly
    22.
    发明授权
    RF receiver front-end assembly 有权
    射频接收机前端装配

    公开(公告)号:US08750709B1

    公开(公告)日:2014-06-10

    申请号:US12176114

    申请日:2008-07-18

    CPC classification number: H04B10/90 H01P5/12 H01Q13/02 H04B2210/006

    Abstract: A waveguide of radio frequency electromagnetic fields is multi-furcated into a plurality of radio frequency waveguide sections, each radio frequency waveguide section having an optoelectronic modulator electrically coupled to it. Each optoelectronic modulator has an optical waveguide disposed therein such that, in use, light traveling in the optical waveguides of the optoelectronic modulators travels in a direction orthogonal with respect to the direction the radio frequency electromagnetic field travels in the radio frequency waveguide sections. The plurality of radio frequency waveguide sections are fed from a common source of said radio frequency energy. In some embodiments, each radio frequency waveguide section has a dielectric material having a length and/or a dielectric constant selected such that a relative time delay of the radio frequency energy propagating in the radio frequency waveguide sections accommodates for a time delay of the light traveling from one optoelectronic modulator to a next optoelectronic modulator of a series connection of multiple optoelectronic modulators.

    Abstract translation: 射频电磁场的波导多分割成多个射频波导部分,每个射频波导部分具有与其电耦合的光电调制器。 每个光电调制器具有设置在其中的光波导,使得在使用中,在光电子调制器的光波导中行进的光在相对于射频电磁场在射频波导部中行进的方向正交的方向上行进。 多个射频波导段从所述射频能量的公共源馈送。 在一些实施例中,每个射频波导部分具有选择的长度和/或介电常数的介电材料,使得在射频波导部分中传播的射频能量的相对时间延迟适应于光行进的时间延迟 从一个光电子调制器到下一个光电子调制器的多个光电子调制器的串联连接。

    Optical analog PPM demodulator
    23.
    发明授权
    Optical analog PPM demodulator 有权
    光模拟PPM解调器

    公开(公告)号:US08569675B1

    公开(公告)日:2013-10-29

    申请号:US13045072

    申请日:2011-03-10

    CPC classification number: H04B10/676 H04B10/11

    Abstract: The invention is a Demodulator for an Optical Analog Pulse Position Modulated signal suitable for inclusion in receivers for Free Space Optical communication systems. In one embodiment the Demodulator may use the pulse position modulated optical information signal and the clock signal with different wavelengths. By proper biasing of a Semiconductor Optical Amplifier and selection of wavelengths for the information signal and the clock signal, the performance of the Demodulator is made insensitive to noise in the received signals.

    Abstract translation: 本发明是用于光模拟脉冲位置调制信号的解调器,适用于包含在自由空间光通信系统的接收机中。 在一个实施例中,解调器可以使用具有不同波长的脉冲位置调制光信息信号和时钟信号。 通过半导体光放大器的适当偏置和信号信号和时钟信号的波长选择,解调器的性能对接收信号中的噪声不敏感。

    System, method and apparatus for clockless PPM optical communications
    24.
    发明授权
    System, method and apparatus for clockless PPM optical communications 有权
    用于无时钟PPM光通信的系统,方法和装置

    公开(公告)号:US08526829B1

    公开(公告)日:2013-09-03

    申请号:US12868378

    申请日:2010-08-25

    CPC classification number: H04B10/524 H04L25/4902

    Abstract: A PPM transmitter includes an optical clock generator for generating equally-spaced optical pulses with a sampling period T; an encoder for transforming an incoming waveform U(t) into a linear combination V(t) of U(t) and a delayed output V(t−kT) according to a rule V(t)=U(t)+aV(t−kT), where k is a positive integer, V(t) is voltage generated by the encoder and a is a coefficient; and an optical delay generator for delaying optical pulses generated by the optical clock generator in proportion to the voltage V(t), such that Δtn=bV(t), where b is another coefficient and where Δtn is the amount of delay imposed by the optical delay generator. The PPM transmitter functions with a PPM receiver for communicating data without the need to transmit or otherwise provide a clock signal. The PPM receiver decodes an original series of the delayed optical pulses Q(t) and a second series Q(t−ckT) delayed by ckT where c is a coefficient.

    Abstract translation: PPM发射机包括用于产生具有采样周期T的等间隔的光脉冲的光时钟发生器; 用于根据规则V(t)= U(t)+ aV(t)将输入波形U(t)变换为U(t)的线性组合V(t)和延迟输出V(t-kT) t-kT),其中k是正整数,V(t)是由编码器产生的电压,a是系数; 以及光延迟发生器,用于与光电时钟发生器产生的光脉冲成比例地延迟电压V(t),使得Deltatn = bV(t),其中b是另一个系数,并且其中Deltatn是由 光延迟发生器。 PPM发射机具有用于传送数据的PPM接收机,而不需要传输或以其他方式提供时钟信号。 PPM接收机解码延迟的光脉冲Q(t)的原始序列和延迟ckT的第二序列Q(t-ckT),其中c是系数。

    Programmable optical label
    25.
    发明授权
    Programmable optical label 有权
    可编程光标

    公开(公告)号:US08274727B1

    公开(公告)日:2012-09-25

    申请号:US11932370

    申请日:2007-10-31

    CPC classification number: G02B5/128 G02B5/23 G02F1/19 G03C1/73

    Abstract: The present invention is a programmable and latching retro-reflective construct suitable for use as an optical label in an optical labeling system. The invention contains retro-reflective structures such as lens beads, corner cubes or other retro-reflecting type structures. The retro-reflective construct further comprises a wavelength selective, programmable and latching reflecting structure located at the reflecting surfaces of the retro-reflective structures. The optical construct can optionally contain additional optical filtering structures. Methods for fabricating the invention are also described.

    Abstract translation: 本发明是一种适用于光学标签系统中的光学标签的可编程和锁定后向反射结构。 本发明包含诸如透镜珠,角立方体或其它后反射型结构的回射结构。 逆反射结构还包括位于反射反射结构的反射表面处的波长选择性,可编程和闭锁反射结构。 光学构造可任选地包含附加的光学滤波结构。 还描述了制造本发明的方法。

    Unit-cell array optical signal processor
    26.
    发明授权
    Unit-cell array optical signal processor 有权
    单元阵列光信号处理器

    公开(公告)号:US08244077B1

    公开(公告)日:2012-08-14

    申请号:US13114594

    申请日:2011-05-24

    Applicant: Daniel Yap

    Inventor: Daniel Yap

    Abstract: This invention provides a versatile unit cell as well as programmable and reconfigurable optical signal processors (such as optical-domain RF filters) that are constructed from arrays of those unit cells interconnected by optical waveguides. Each unit cell comprises an optical microdisk, an optical phase shifter, and at least one input/output optical waveguide, wherein the microdisk and the phase shifter are both optically connected to a common waveguide.

    Abstract translation: 本发明提供了一种多功能单元以及由通过光波导互连的那些单位单元的阵列构成的可编程和可重新配置的光信号处理器(例如光域RF滤波器)。 每个单元电池包括光学微盘,光学移相器和至少一个输入/输出光波导,其中微型盘和移相器都光学连接到公共波导。

    Dark channel array with scattering centers
    27.
    发明授权
    Dark channel array with scattering centers 失效
    具有散射中心的暗沟道阵列

    公开(公告)号:US08120843B1

    公开(公告)日:2012-02-21

    申请号:US12413465

    申请日:2009-03-27

    CPC classification number: H01S5/4068 H01S5/405 H01S5/423

    Abstract: In one of the embodiments, a dark channel array is provided which includes gain channels, each configured to emit an output beam from an output surface and to have a light wave propagating therethrough. It further includes a dark channel configured to emit an output beam from the output surface of the dark channel array and to have a light wave propagating in the dark channel, such that output beams from the plurality of gain channels are coherently coupled in phase with each other. The dark channel array is configured such that the dark channel captures a portion of the output beam from at least two of the plurality of gain channels by radiant coupling.

    Abstract translation: 在其中一个实施例中,提供了一个暗通道阵列,其包括增益通道,每个通道被配置为从输出表面发射输出光束并且具有通过其传播的光波。 它还包括配置成从暗通道阵列的输出表面发射输出光束并且具有在暗通道中传播的光波的暗通道,使得来自多个增益通道的输出光束与每个 其他。 暗通道阵列被配置为使得暗通道通过辐射耦合捕获来自多个增益通道中的至少两个的输出光束的一部分。

    Enhanced linearity RF photonic link
    28.
    发明授权
    Enhanced linearity RF photonic link 有权
    增强线性RF光子链接

    公开(公告)号:US08059969B1

    公开(公告)日:2011-11-15

    申请号:US12141834

    申请日:2008-06-18

    Applicant: Daniel Yap

    Inventor: Daniel Yap

    CPC classification number: H04B10/58 H04B10/25759 H04B10/505

    Abstract: A method and apparatus for modulating an RF signal. The RF signal is supplied to a grating modulator having a grating, and light of at least a first wavelength is supplied as a first optical carrier to the grating modulator. The first carrier light is modulated by the grating modulator, wherein the first wavelength of the first carrier coincides with a null in the third derivative of a transmittance spectrum of the grating. Optionally, light of at an additional, second wavelength as a second optical carrier, is supplied to the grating modulator which modulates the second carrier light. The second wavelength of the second carrier coincides with another null, but different than the first mentioned null, in the third derivative of a transmittance spectrum of the grating.

    Abstract translation: 一种用于调制RF信号的方法和装置。 将RF信号提供给具有光栅的光栅调制器,并且将至少第一波长的光作为第一光学载体提供给光栅调制器。 第一载流子光由光栅调制器调制,其中第一载流子的第一波长与光栅的透射光谱的三阶导数中的零点重合。 可选地,作为第二光学载体的另外的第二波长的光被提供给调制第二载流子的光栅调制器。 在光栅的透射光谱的三阶导数中,第二载流子的第二波长与另一个零点不同,与第一个提到的零点不同。

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