公开(公告)号：US20140161464A1

公开(公告)日：2014-06-12

申请号：US13952493

申请日：2013-07-26

Applicant: California Institute of Technology

Inventor： Steven BOWERS ,  Firooz AFLATOUNI ,  Behrooz ABIRI ,  Seyed Ali HAJIMIRI

IPC: H04B10/2575

CPC classification number: H04B10/2575 ,  H04B10/90 ,  H04B2210/006

Abstract: A multi-port radiator radiates electromagnetic signal in response to a beat frequency of a pair of optical signals. The radiator includes a multitude of optical paths each carrying an optical signal having first and second wavelengths. A multitude of frequency conversion elements convert the optical signals to electrical signals and deliver them to the radiator's multiple ports. The frequency of the electrical signals, and hence the frequency of the electromagnetic wave, is defined by the difference between the first and second wavelengths. The phases of the optical signals received by the frequency conversion elements are shifted with respect to one another. Optionally, the difference between the phases of the optical signals travelling through each pair of adjacent paths is 90°. The first and second wavelengths are generated by a pair of optical sources and are optionally modulated before being combined and delivered to the optical paths.

Abstract translation: 多端口辐射器响应于一对光信号的拍频而辐射电磁信号。 散热器包括多个光路，每个光路承载具有第一和第二波长的光信号。 多个频率转换元件将光信号转换为电信号并将其传送到散热器的多个端口。 电信号的频率以及电磁波的频率由第一和第二波长之间的差定义。 由频率转换元件接收的光信号的相位相对于彼此移位。 可选地，穿过每对相邻路径的光信号的相位差为90°。 第一和第二波长由一对光源产生，并且在被组合和传送到光路之前可选地被调制。

公开(公告)号：US20150078754A1

公开(公告)日：2015-03-19

申请号：US14027129

申请日：2013-09-13

Applicant: California Institute of Technology

Inventor： Firooz AFLATOUNI ,  Behrooz Abiri ,  Seyed Ali Hajimiri

IPC: H04B10/2575

CPC classification number: H04B10/2575 ,  G02F2001/212 ,  H03K3/42

Abstract: An opto-electrical oscillator includes, in part, first and second optical phase modulators, a coupler, an optical-to-electrical signal conversion circuit, and a control circuit. The first optical phase modulator modulates the phase of a first optical signal in response to a first feedback signal to generate a first phase modulated signal. The second optical phase modulator modulates the phase of a second optical signal in response to a second feedback signal to generate a second phase modulated signal. The first and second optical signals travel through first and second optical paths respectively and are generated from the same optical source. The optical-to-electrical signal conversion circuit receives an optical signal from the coupler and in response generates an electrical signal applied to the control circuit. The output signals of the control circuit cause the first and second feedback signals to be out of phase.

Abstract translation: 光电振荡器部分地包括第一和第二光相位调制器，耦合器，光电信号转换电路和控制电路。 第一光相位调制器响应于第一反馈信号调制第一光信号的相位，以产生第一相位调制信号。 第二光相位调制器响应于第二反馈信号调制第二光信号的相位，以产生第二相位调制信号。 第一和第二光信号分别通过第一和第二光路，并从相同的光源产生。 光电信号转换电路从耦合器接收光信号，并且响应于产生施加到控制电路的电信号。 控制电路的输出信号使第一和第二反馈信号异相。

公开(公告)号：US20180076896A9

公开(公告)日：2018-03-15

申请号：US14027129

申请日：2013-09-13

Applicant: California Institute of Technology

Inventor： Firooz AFLATOUNI ,  Behrooz Abiri ,  Seyed Ali Hajimiri

IPC: H04B10/2575

CPC classification number: H04B10/2575 ,  G02F2001/212 ,  H03K3/42

Abstract: An opto-electrical oscillator includes, in part, first and second optical phase modulators, a coupler, an optical-to-electrical signal conversion circuit, and a control circuit. The first optical phase modulator modulates the phase of a first optical signal in response to a first feedback signal to generate a first phase modulated signal. The second optical phase modulator modulates the phase of a second optical signal in response to a second feedback signal to generate a second phase modulated signal. The first and second optical signals travel through first and second optical paths respectively and are generated from the same optical source. The optical-to-electrical signal conversion circuit receives an optical signal from the coupler and in response generates an electrical signal applied to the control circuit. The output signals of the control circuit cause the first and second feedback signals to be out of phase.

公开(公告)号：US20150104191A1

公开(公告)日：2015-04-16

申请号：US14489393

申请日：2014-09-17

Applicant: California Institute of Technology

Inventor： Seyed Ali HAJIMIRI ,  Firooz AFLATOUNI ,  Behrooz ABIRI

IPC: H04B10/564

CPC classification number: H04B10/50577 ,  H04B10/50 ,  H04B10/90 ,  H04B2210/006

Abstract: An electro-optical oscillator includes, in part, a modulator, a signal splitter, N photodiodes with N being an integer greater than one, a signal combiner, and a filter. The modulator modulates an optical signal in accordance with a feedback signal. The splitter splits the modulated optical signal into N optical signals each delivered to a different one of N photo-diodes. Each of the N photo-diodes converts the optical signal it receives to a current signal. The signal combiner combines the N current signals received from the N photo-diodes to generate a combined current signal. The filter filters the combined current signal and generates the feedback signal. The electro-optical oscillator optionally includes, in part, N variable optical gain/attenuation components each amplifying/attenuating a different one of the N optical signals generated by the splitter.

Abstract translation: 电光振荡器部分地包括调制器，信号分离器，N是大于1的整数的N个光电二极管，信号组合器和滤波器。 调制器根据反馈信号调制光信号。 分离器将调制的光信号分成N个光信号，每个光信号被传送到不同的一个N个光电二极管。 每个N个光电二极管将其接收的光信号转换为电流信号。 信号组合器组合从N个光电二极管接收的N个电流信号以产生组合电流信号。 滤波器滤除组合电流信号并产生反馈信号。 电光振荡器部分地可选地包括N个可变光学增益/衰减分量，每个可变光增益/衰减分量放大/衰减由分路器产生的N个光信号中的不同一个。

公开(公告)号：US20160191170A1

公开(公告)日：2016-06-30

申请号：US14812267

申请日：2015-07-29

Applicant: California Institute of Technology

Inventor： Firooz AFLATOUNI ,  Behrooz Abiri ,  Seyed Ali Hajmiri

IPC: H04B10/548 ,  H04B10/50 ,  H04B10/25

CPC classification number: H04B10/548 ,  G02F1/2955 ,  H04B10/2504 ,  H04B10/501 ,  H04B10/50577 ,  H04B10/60

Abstract: An integrated optical phased array includes an input channel receiving an optical input signal, and a multitude of signal processing channels each adapted to supply an associated optical output signal along a first axis in response to the input signal. Each signal processing channel includes, in part, a phase modulator adapted to modulate the phase of the signal travelling through the channel, thereby to control or steer the output signal of the phased array. Each channel optionally includes first and second photo detection circuits respectively generating first and second detection signals. The first and second detection signals in each channel may be used to modulate the amplitude and/or phase of the output signal of that channel thereby to control and steer the output signal of the phased array.

Abstract translation: 集成的光学相控阵列包括接收光输入信号的输入通道和多个信号处理通道，每个信号处理通道适于响应输入信号沿第一轴提供相关的光输出信号。 每个信号处理通道部分地包括相位调制器，其适于调制通过通道传播的信号的相位，从而控制或引导相控阵列的输出信号。 每个通道可选地包括分别产生第一和第二检测信号的第一和第二光电检测电路。 每个通道中的第一和第二检测信号可以用于调制该通道的输出信号的幅度和/或相位，从而控制和引导相控阵列的输出信号。

公开(公告)号：US20140071249A1

公开(公告)日：2014-03-13

申请号：US14027119

申请日：2013-09-13

Applicant: California Institute of Technology

Inventor： Firooz AFLATOUNI ,  Behrooz Abiri ,  Seyed Ali Hajimiri

IPC: H04N13/02

CPC classification number: H04N13/211 ,  H04N13/207 ,  H04N13/254 ,  H04N13/271

Abstract: A camera includes, in part, an optical signal source generating a frequency varying optical signal, a multitude of pixels arranged along rows and columns, an optical focusing element, and an opto-electronic circuit. A portion of the optical signal generated by the optical signal is caused to reflect from a target object and then directed toward the pixels. A multitude of samples of a second portion of the optical signal are combined with the signals received by the pixels to generate a multitude of combined optical signals. The optical signals so combined are converted to electrical signals. Each electrical signal has a frequency defined by a difference between a frequency of the second portion of the optical signal and a frequency of a signal received from a pixel. The frequency differences are used to form an image of the target object.

Abstract translation: 相机部分地包括产生频率变化的光信号的光信号源，沿着行和列排列的多个像素，光聚焦元件和光电子电路。 使由光信号产生的光信号的一部分从目标物体反射，然后指向像素。 光信号的第二部分的多个样本与由像素接收的信号组合以产生多个组合光信号。 如此组合的光信号被转换成电信号。 每个电信号具有由光信号的第二部分的频率与从像素接收的信号的频率之间的差定义的频率。 使用频率差来形成目标对象的图像。