公开(公告)号：US20210255393A1

公开(公告)日：2021-08-19

申请号：US16791774

申请日：2020-02-14

Applicant: Mohammad Mehdi MANSOURI RAD ,  Hamid EBRAHIMZAD

Inventor： Mohammad Mehdi MANSOURI RAD ,  Hamid EBRAHIMZAD

IPC: G02B6/293 ,  G02B6/122 ,  G02B6/42

Abstract: An aspect of the disclosure provides an optical device including a microring resonator (MRR).

公开(公告)号：US10205534B2

公开(公告)日：2019-02-12

申请号：US15402914

申请日：2017-01-10

Applicant: Hamid Mehrvar ,  Mohammad Mehdi Mansouri Rad

Inventor： Hamid Mehrvar ,  Mohammad Mehdi Mansouri Rad

IPC: H04B10/61 ,  H04B10/40 ,  H04B10/516 ,  H04B10/25

Abstract: A method for conveying information through an optical fiber link between a transmitter and a receiver of an optical communication system. The method includes generating, by the transmitter, a predetermined spectral change, and inserting the predetermined spectral change into an optical fiber link for transmission to the receiver. A detector associated with the receiver detects the predetermined spectral change in an optical signal received through the optical fiber link, and generates a detection signal in accordance with the detection result. The detector is independent of a digital signal processor of the receiver that is configured to recover data modulated on the optical signal received through the optical fiber link.

公开(公告)号：US20170353242A1

公开(公告)日：2017-12-07

申请号：US15171413

申请日：2016-06-02

Applicant: Mohammad Mehdi Mansouri Rad ,  Irfan Muhammad Fazal

Inventor： Mohammad Mehdi Mansouri Rad ,  Irfan Muhammad Fazal

IPC: H04B10/25 ,  H04B10/61 ,  H04B3/32 ,  H04B10/079 ,  H04L1/00 ,  H04J14/02

CPC classification number: H04B10/2504 ,  H04B3/32 ,  H04B10/0795 ,  H04B10/07953 ,  H04B10/61 ,  H04J14/02 ,  H04J14/0256 ,  H04J14/04 ,  H04L1/0001 ,  H04L1/004

Abstract: Spatial division multiplexing (SDM) allows multiple optical signals to be multiplexed onto a single optical link. Performance of SDM systems may be improved by monitoring performance metrics indicative of crosstalk between the spatially multiplexed signals and adjusting at least one transmission characteristic of one or more of the multiplexed signals in order to reduce the impact of the intermodal crosstalk.

公开(公告)号：US20170272165A1

公开(公告)日：2017-09-21

申请号：US15198503

申请日：2016-06-30

Applicant: Mohammad Mehdi MANSOURI RAD ,  Hamid MEHRVAR ,  Mehdi Arashmid AKHAVAIN MOHAMMADI

Inventor： Mohammad Mehdi MANSOURI RAD ,  Hamid MEHRVAR ,  Mehdi Arashmid AKHAVAIN MOHAMMADI

IPC: H04B10/2581 ,  H04B10/50 ,  H04B10/60

CPC classification number: H04B10/2581 ,  H04B10/50 ,  H04B10/60 ,  H04B10/85

Abstract: Transmitter, receiver, system and method for secure data communications are provided. The transmitter receives an optical signal from a signal source and transmits first and second version of the optical signal in first and second areas of an optical channel. The receiver receives first and second components of an obfuscated signal and modifies the first component before combining the modified first component and the second component to obtain a recovered optical signal.

公开(公告)号：US20170115514A1

公开(公告)日：2017-04-27

申请号：US14921529

申请日：2015-10-23

Applicant: MOHAMMAD MEHDI MANSOURI RAD

Inventor： MOHAMMAD MEHDI MANSOURI RAD

IPC: G02F1/01 ,  G02B6/42 ,  G02B6/28 ,  G02B6/35 ,  G02F1/17 ,  G02F1/225 ,  G02F1/313

CPC classification number: G02F1/0121 ,  G02B6/2861 ,  G02B6/3588 ,  G02B6/4286 ,  G02F1/17 ,  G02F1/225 ,  G02F1/313 ,  G02F2201/58 ,  H04Q11/0005

Abstract: Control apparatus and methods for photonic devices are disclosed. One or more detectors is used to monitor a functional state of a photonic device. Each detector is configured to receive a respective pair of optical signals from the photonic device and generate a detection signal proportional to a difference between the pair of optical signals. A controller generates control signal(s) for the photonic device based on the detection signal(s). The apparatus and methods may be used in optical switching applications to control multiple photonic devices configured as optical switches in order to implement a multi-channel optical switch fabric for a multi-channel optical switch.

公开(公告)号：US20160072576A1

公开(公告)日：2016-03-10

申请号：US14476882

申请日：2014-09-04

Applicant: Mohammad Mehdi Mansouri RAD ,  David C. BOWNASS ,  Loren S. BERG ,  David W. BOERTJES ,  Jean-Luc ARCHAMBAULT

Inventor： Mohammad Mehdi Mansouri RAD ,  David C. BOWNASS ,  Loren S. BERG ,  David W. BOERTJES ,  Jean-Luc ARCHAMBAULT

IPC: H04B10/071 ,  H04B10/25 ,  H04J14/02 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01M11/31 ,  G01M11/3109 ,  G01M11/3145 ,  G01M11/319 ,  H04B10/25 ,  H04J14/02

Abstract: A method of analysing performance of an optical fiber link. As a preliminary step, a reference trace indicative of a distributed optical performance of the optical fiber link is derived. During in-service operation of the optical fiber link, an Optical Time Domain Reflectometry (OTDR) sub-system measures an OTDR trace with Raman amplification ON, and a real-time cumulative Raman Gain profile of the optical fiber link is calculated based on the reference trace and the measured OTDR trace.

Abstract translation: 分析光纤链路性能的方法。 作为初步步骤，导出表示光纤链路的分布式光学性能的参考轨迹。 在光纤链路的在役操作期间，光时域反射（OTDR）子系统测量具有拉曼放大ON的OTDR迹线，并且基于光纤链路的实时累积拉曼增益曲线来计算 参考轨迹和测量的OTDR轨迹。

公开(公告)号：US11095509B2

公开(公告)日：2021-08-17

申请号：US16567343

申请日：2019-09-11

Applicant: Mohammad Mehdi Mansouri Rad

Inventor： Mohammad Mehdi Mansouri Rad

IPC: H04Q11/00 ,  H04L12/24 ,  H04B10/079

Abstract: A method and apparatus for controlling an optical switch. The switch includes a switching fabric and optical amplifiers for amplifying optical signals. A configuration for the switching fabric is generated and implemented. The configuration indicates a set of optical paths between switching fabric input ports and the output ports. Optical path losses through the switching fabric vary based on the configuration. An amplifier control signal for controlling gains of the optical amplifiers, is also provided. The configuration for the switching fabric is generated based on the gains of the optical amplifiers, the amplifier control signal is generated based on the configuration for the switching fabric, or both.

公开(公告)号：US10386582B2

公开(公告)日：2019-08-20

申请号：US15251782

申请日：2016-08-30

Applicant: Mohammad Mehdi Mansouri Rad ,  Dominic John Goodwill ,  Jia Jiang

Inventor： Mohammad Mehdi Mansouri Rad ,  Dominic John Goodwill ,  Jia Jiang

IPC: G02B6/12 ,  G02B6/35 ,  G02B6/27 ,  G02B6/28 ,  G02F1/01

Abstract: A photonic device such as a polarization controller includes a coupler, such as a 2×2 MMI coupler, or a series of such couplers. Couplers may be interspersed with other components such as phase shifters. Photodetectors such as photodiodes are coupled to input and output lines of the coupler or couplers, for example via taps. In various embodiments, all of the couplers include photodetectors monitoring light power for at least two of their inputs and outputs, and at least one of the couplers includes photodetectors monitoring at least three of its inputs and outputs. The arrangement of photodetectors can provide sufficient information for feedback control of the photonic device and/or determining the state of polarization of light within the photonic device. Signals from some photodetectors can be used to estimate light power at locations in the photonic device lacking photodetectors.

公开(公告)号：US20190238224A1

公开(公告)日：2019-08-01

申请号：US15883540

申请日：2018-01-30

Applicant: Mohammad Mehdi MANSOURI RAD ,  Hamid MEHRVAR ,  Zhiping JIANG ,  Eric BERNIER

Inventor： Mohammad Mehdi MANSOURI RAD ,  Hamid MEHRVAR ,  Zhiping JIANG ,  Eric BERNIER

IPC: H04B10/079 ,  H04J14/02 ,  H04B10/071 ,  H04B10/80 ,  H04B10/299

Abstract: A monitoring and calibration apparatus for an optical networking device such as ROADM is provided. Reflectors are integrated into the device, for example at the ends of optical interconnect cables. The reflectors reflect light in specific monitoring wavelengths and pass other wavelengths such as those used for communication. A light source emits monitoring light which is reflected by the reflector and measured by a detector to measure the integrity of optical paths. The optical paths can include optical cables and cable connectors. Path integrity between different modules of the device can therefore be monitored. Multiple reflectors, reflecting light in different wavelengths, can be placed in series along the same optical path and used to monitor multiple segments of the path. A wavelength selective switch (WSS) of the device can be used to route monitoring light to different optical paths. The WSS also operates to route communication signals in the device.

公开(公告)号：US20180007045A1

公开(公告)日：2018-01-04

申请号：US15198441

申请日：2016-06-30

Applicant: Mehdi Arashmid AKHAVAIN MOHAMMADI ,  Mohammad Mehdi MANSOURI RAD ,  Hamid MEHRVAR

Inventor： Mehdi Arashmid AKHAVAIN MOHAMMADI ,  Mohammad Mehdi MANSOURI RAD ,  Hamid MEHRVAR

IPC: H04L29/06 ,  H04B10/516 ,  H04B10/66 ,  H04B10/27

CPC classification number: H04L63/0876 ,  H04B10/27 ,  H04B10/516 ,  H04B10/66 ,  H04L63/0428 ,  H04L63/061 ,  H04L63/068

Abstract: Transmitter, receiver, system and method for secure data communications are provided. The transmitter encodes data as a spatial symbol in accordance with a codebook to transmit spatially encoded data through the optical channel. The receiver detects a spatial symbol from spatially encoded data received through the optical channel, and generates a data value based on a codebook and the spatial symbol.