公开(公告)号：US20160142133A1

公开(公告)日：2016-05-19

申请号：US14221124

申请日：2014-03-20

Applicant: University of Southern California

Inventor： Mohammad Reza Chitgarha ,  Salman Khaleghi ,  Ahmed Almaiman ,  Alan E. Willner

IPC: H04B10/079 ,  H04J14/02

CPC classification number: H04B10/07953 ,  H04J14/0227

Abstract: A device for optical-signal-to-noise (OSNR) monitoring can include: a delay-line interferometer configured to connect with a tunable optical filter; and two or more power detectors to measure outputs of the interferometer; wherein one or more parameters are optimized for different transmission baud rates to improve accuracy. In addition, a method can include: connecting an input of a delay-line interferometer with an output of a tunable optical filter, and an output of the delay-line interferometer with an input of a power detector, to form an optical-signal-to-noise (OSNR) monitoring apparatus; optimizing one or more parameters of the OSNR monitoring apparatus for different transmission baud rates to improve accuracy.

Abstract translation: 用于光信号到噪声（OSNR）监测的装置可以包括：延迟线干涉仪，被配置为与可调谐滤光器连接; 和两个或更多个功率检测器来测量干涉仪的输出; 其中针对不同的传输波特率优化一个或多个参数以提高精度。 此外，一种方法可以包括：将延迟线干涉仪的输入与可调谐滤光器的输出连接，并且延迟线干涉仪的输出与功率检测器的输入相连，以形成光信号 - （OSNR）监控设备; 优化OSNR监控设备的一个或多个参数以实现不同的传输波特率，以提高准确性。

公开(公告)号：US09625320B2

公开(公告)日：2017-04-18

申请号：US14856389

申请日：2015-09-16

Applicant: University of Southern California

Inventor： Mohammad Reza Chitgarha ,  Alan E. Willner ,  Amirhossein Mohajerin-Ariaei ,  Morteza Ziyadi ,  Salman Khaleghi

IPC: G01J3/45

CPC classification number: G01J3/45 ,  G02F1/35 ,  G02F1/37 ,  G02F2001/3507 ,  G02F2001/3548 ,  H04B10/00 ,  H04B10/613 ,  H04B10/63

Abstract: Systems and techniques relating to automatically-locked homodyne detection are described. A described system includes a first nonlinear element, a filter, and second nonlinear elements. The first nonlinear element can produce, based on an input signal and a first continuous wave (CW) signal, a first output signal that includes the input signal and a phase conjugate copy of the input signal. The filter can produce a filtered signal based on the first output signal and can be programmable to adjust an induced delay between the input signal and the phase conjugate signal. The second nonlinear elements can produce second output signals based on a second CW signal and differently weighted combinations of signal components within the filtered signal. The second output signals can include an in-phase output signal based on an in-phase version of the filtered signal and a quadrature output signal based on a quadrature version of the filtered signal.

公开(公告)号：US20160076941A1

公开(公告)日：2016-03-17

申请号：US14856389

申请日：2015-09-16

Applicant: University of Southern California

Inventor： Mohammad Reza Chitgarha ,  Alan E. Willner ,  Amirhossein Mohajerin-Ariaei ,  Morteza Ziyadi ,  Salman Khaleghi

IPC: G01J3/45

CPC classification number: G01J3/45 ,  G02F1/35 ,  G02F1/37 ,  G02F2001/3507 ,  G02F2001/3548 ,  H04B10/00 ,  H04B10/613 ,  H04B10/63

Abstract: Systems and techniques relating to automatically-locked homodyne detection are described. A described system includes a first nonlinear element, a filter, and second nonlinear elements. The first nonlinear element can produce, based on an input signal and a first continuous wave (CW) signal, a first output signal that includes the input signal and a phase conjugate copy of the input signal. The filter can produce a filtered signal based on the first output signal and can be programmable to adjust an induced delay between the input signal and the phase conjugate signal. The second nonlinear elements can produce second output signals based on a second CW signal and differently weighted combinations of signal components within the filtered signal. The second output signals can include an in-phase output signal based on an in-phase version of the filtered signal and a quadrature output signal based on a quadrature version of the filtered signal.

Abstract translation: 描述与自动锁定零差检测相关的系统和技术。 所描述的系统包括第一非线性元件，滤波器和第二非线性元件。 第一非线性元件可以基于输入信号和第一连续波（CW）信号产生包括输入信号的第一输出信号和输入信号的相位共轭拷贝。 滤波器可以基于第一输出信号产生滤波信号，并且可以被编程以调整输入信号和相位共轭信号之间的感应延迟。 第二非线性元件可以基于第二CW信号和滤波信号内的信号分量的不同加权组合产生第二输出信号。 第二输出信号可以包括基于滤波信号的同相版本的同相输出信号和基于滤波信号的正交版本的正交输出信号。

公开(公告)号：US20130294777A1

公开(公告)日：2013-11-07

申请号：US13887119

申请日：2013-05-03

Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA

Inventor： Alan E. Willner ,  Mohammad Reza Chitgarha ,  Salman Khaleghi

IPC: H04J14/00

CPC classification number: H04J14/002 ,  H04B10/505 ,  H04B10/506 ,  H04B10/5161 ,  H04J14/00 ,  H04J14/02 ,  H04J14/0254

Abstract: The present disclosure includes systems and techniques relating to reconfigurable optical transmitters. In some implementations, an apparatus, systems, or methods can include multiple ports to receive independent optical data signals or independent electrical signals that are converted into independent optical data signals, at least one optical pump laser, and one or more nonlinear optics elements configured and arranged to generate a phase conjugate for each of the independent optical data signals at least by combining the respective independent optical data signal with an output of the optical pump, and generate an output optical signal from the independent optical data signals at least by combining each of the independent optical data signals with its corresponding generated phase conjugate.

Abstract translation: 本公开包括与可重新配置的光发射机有关的系统和技术。 在一些实现中，装置，系统或方法可以包括多个端口以接收独立的光学数据信号或被转换成独立的光学数据信号的独立的电信号，至少一个光学泵浦激光器和一个或多个非线性光学元件，其被配置和 至少通过将各个独立的光学数据信号与光泵浦的输出组合来产生每个独立的光学数据信号的相位共轭，并且从独立的光学数据信号产生输出的光学信号，至少通过将 独立的光学数据信号与其相应的生成的相位共轭。