公开(公告)号：US11770189B2

公开(公告)日：2023-09-26

申请号：US17478627

申请日：2021-09-17

Applicant: COM DEV Ltd.

Inventor： Alan Scott ,  Hugh Podmore

IPC: H04J14/02 ,  H04B10/25 ,  H04B10/294 ,  H04B10/50

CPC classification number: H04B10/25 ,  H04B10/294 ,  H04B10/506 ,  H04J14/02

Abstract: Various embodiments are disclosed herein with generally relate to an optical communication system using a photonic lantern. In at least one embodiment, the optical system comprises: an optical transmitter coupled to a signal transmitting path; an optical receiver coupled to a signal receiving path; a photonic lantern, the photonic lantern extending between a first open end and a second open end, the first end comprising an opening to a single multi-mode fiber, and the second end comprising a plurality of single mode fibers that are adiabatically coupled to the multi-mode fiber, the plurality of single-mode fibers includes a single-mode fiber adapted to carry a fundamental optical mode and the remaining single-mode fibers adapted to carry higher-order optical modes, wherein, the single-mode fiber is coupled to the optical transmitting path, the remaining single-mode fibers are coupled to the optical receiving path.

公开(公告)号：US11215560B2

公开(公告)日：2022-01-04

申请号：US16100881

申请日：2018-08-10

Applicant: COM DEV LTD.

Inventor： Alan Scott

IPC: G01N21/64 ,  G01N21/25 ,  G01N21/62 ,  F21V8/00 ,  A61B5/00 ,  G01N33/50

Abstract: A portable imaging apparatus and system. A sample processing device has a reaction chamber configured to receive a sample and react the sample with a fluorescent compound that emits a specified wavelength of light when excited by light within an excitation band. An illumination source can be positioned to illuminate the reaction chamber when the sample processing device is positioned for imaging. A light guide can be positioned to face the reaction chamber and transfer the emitted light to an imaging detector. The light guide has a filter that blocks the wavelength of light from the illumination source and passes the fluorescent emitted light. The light guide unit defines an angular light acceptance range and is configured to constrain angular spreading of light.

公开(公告)号：US09964396B1

公开(公告)日：2018-05-08

申请号：US15343827

申请日：2016-11-04

Applicant: COM DEV LTD.

Inventor： Alan Scott ,  Hugh Podmore

IPC: G01B9/02 ,  G01J3/45 ,  G01J3/453

CPC classification number: G01B9/02044 ,  G01B9/02027 ,  G01B9/02051 ,  G01B9/02097 ,  G01J3/0218 ,  G01J3/0272 ,  G01J3/45 ,  G01J3/4531

Abstract: A spectrometer and method for determining an emitted light spectrum. An input light signal is received and directed to an array of interferometers using waveguides. A plurality of self-interfering signals are detected from a first plurality of interferometers in the array of interferometers. The first plurality of interferometers has fewer interferometers than required to satisfy the Nyquist criterion for reconstructing the emitted light spectrum. The emitted light spectrum is reconstructed from the plurality of self-interfering signals using compressive sensing. The plurality of self-interfering signals can provide an interference pattern used to reconstruct the emitted light spectrum. A second plurality of interferometers may output a second plurality of self-interfering signals to reconstruct a low resolution spectrum of the input light signal satisfying the Nyquist criterion. Low resolution signal components can be detected from the low resolution spectrum and used to pre-process the interference pattern.

公开(公告)号：US11128373B1

公开(公告)日：2021-09-21

申请号：US16945112

申请日：2020-07-31

Applicant: COM DEV LTD.

Inventor： Hugh Podmore ,  Alan Scott ,  Thomas Ducellier

IPC: H04B10/00 ,  H04B10/112 ,  H04B10/516 ,  H04B10/564 ,  H04J14/00

Abstract: Various embodiments for a system and method for a range-enhanced high-speed free-space optical communication are described herein. Generally, the optical communication system may include a first modulator, a second modulator and an average-power limited optical amplifier. The first modulator may receive an input optical signal and generate a modulated optical signal. The second modulator may receive the modulated signal and may be operable to turn-off a select number of pulses in each modulated pulse frame of the modulated signal to generate a low-duty cycle modulated signal. The average-power limited optical amplifier may then generate an amplified modulated signal from the low-duty cycle signal, wherein the amplified modulated signal comprises a plurality of amplified pulse frames with each amplified pulse frame defining an amplified version of a corresponding each low-duty cycle pulse frame.

公开(公告)号：US20230093006A1

公开(公告)日：2023-03-23

申请号：US17478627

申请日：2021-09-17

Applicant: COM DEV Ltd.

Inventor： Alan Scott ,  Hugh Podmore

IPC: H04B10/25 ,  H04B10/50 ,  H04B10/294 ,  H04J14/02

Abstract: Various embodiments are disclosed herein with generally relate to an optical communication system using a photonic lantern. In at least one embodiment, the optical system comprises: an optical transmitter coupled to a signal transmitting path; an optical receiver coupled to a signal receiving path; a photonic lantern, the photonic lantern extending between a first open end and a second open end, the first end comprising an opening to a single multi-mode fiber, and the second end comprising a plurality of single mode fibers that are adiabatically coupled to the multi-mode fiber, the plurality of single-mode fibers includes a single-mode fiber adapted to carry a fundamental optical mode and the remaining single-mode fibers adapted to carry higher-order optical modes, wherein, the single-mode fiber is coupled to the optical transmitting path, the remaining single-mode fibers are coupled to the optical receiving path.

公开(公告)号：US20200049626A1

公开(公告)日：2020-02-13

申请号：US16100881

申请日：2018-08-10

Applicant: COM DEV LTD.

Inventor： Alan Scott

IPC: G01N21/64 ,  A61B5/00

Abstract: A portable imaging apparatus and system. A sample processing device has a reaction chamber configured to receive a sample and react the sample with a fluorescent compound that emits a specified wavelength of light when excited by light within an excitation band. An illumination source can be positioned to illuminate the reaction chamber when the sample processing device is positioned for imaging. A light guide can be positioned to face the reaction chamber and transfer the emitted light to an imaging detector. The light guide has a filter that blocks the wavelength of light from the illumination source and passes the fluorescent emitted light. The light guide unit defines an angular light acceptance range and is configured to constrain angular spreading of light.