1. Articles from Eric Swanson

    1-10 of 10
    1. Photonic integrated receiver

      Photonic integrated receiver

      A wavelength tunable laser device includes a gain element positioned in an optical cavity that provides optical gain to an optical signal. A frequency shifter that generates a frequency shift as a function of time is positioned in the optical cavity. The optical cavity is configured so that a magnitude of the frequency shift as a function of time generated by the frequency shifter is substantially equal to a frequency separation of a cavity mode of the cavity such that an output of the cavity generates laser light having a wavelength that tunes as a function of time.

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    2. Multi-cavity wavelength tunable laser device

      Multi-cavity wavelength tunable laser device

      A wavelength tunable laser device includes a gain element that provides optical gain. A laser cavity includes at least two cavities, wherein each of the at least two cavities has a different optical cavity length. At least two optical modulators are positioned in the laser cavity, wherein the at least two optical modulators are driven with waveforms so as to tune a wavelength of the wavelength tunable laser device.

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    3. Optical probe

      Optical probe

      An optical probe includes an optical source that generates an optical beam that propagates from a proximal end to a distal end of an optical fiber that imparts a transformation of a spatial profile of the optical beam. An optical control device imparts a compensating spatial profile on the optical beam that at least partially compensates for the transformation of the spatial profile of the optical beam imparted by the optical fiber in response to a control signal from a signal processor. A distal optical source generates a calibration light that propagates through the one or more optical waveguides from ...

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    4. Light detection and ranging system with photonic integrated circuit

      Light detection and ranging system with photonic integrated circuit

      Disclosed herein are optical integration technologies, designs, systems and methods directed toward Optical Coherence Tomography (OCT) and other interferometric optical sensor, ranging, and imaging systems wherein such systems, methods and structures employ tunable optical sources, coherent detection and other structures on a single or multichip monolithic integration. In contrast to contemporary, prior-art OCT systems and structures that employ simple, miniature optical bench technology using small optical components positioned on a substrate, systems and methods according to the present disclosure employ one or more photonic integrated circuits (PICs), use swept-source techniques, and employ a widely tunable optical source(s). In another ...

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    5. Optical probe using multimode optical waveguide and proximal processing

      Optical probe using multimode optical waveguide and proximal processing

      An optical probe includes an optical source that generates an optical beam that propagates from a proximal end to a distal end of an optical fiber that imparts a transformation of a spatial profile of the optical beam. An optical control device imparts a compensating spatial profile on the optical beam that at least partially compensates for the transformation of the spatial profile of the optical beam imparted by the optical fiber in response to a control signal from a signal processor. A distal optical source generates a calibration light that propagates through the one or more optical waveguides from ...

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    6. Integrated optical system

      Integrated optical system

      Disclosed herein are optical integration technologies, designs, systems and methods directed toward Optical Coherence Tomography (OCT) and other interferometric optical sensor, ranging, and imaging systems wherein such systems, methods and structures employ tunable optical sources, coherent detection and other structures on a single or multichip monolithic integration. In contrast to contemporary, prior-art OCT systems and structures that employ simple, miniature optical bench technology using small optical components positioned on a substrate, systems and methods according to the present disclosure employ one or more photonic integrated circuits (PICs), use swept-source techniques, and employ a widely tunable optical source(s).

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    7. Russian Academy of Sciences Gets New Leader - Congratulations to Alexander Sergeyev a Former OCT Researcher

      Russian Academy of Sciences Gets New Leader - Congratulations to Alexander Sergeyev a Former OCT Researcher

      Russian President Vladimir Putin approved physicist Alexander Sergeyev as the new leader of the prestegious Russian Academy of Sciences. Dr. Sergeyev (sometimes spelled Sergeev) was involved in pioneering research in the early days of Optical Coherence Tomography. For more information see recent ARTICLE and see some of Dr. Sergeyev's list of OCT related articles HERE.

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    8. Cubic meter volume optical coherence tomography

      Cubic meter volume optical coherence tomography

      Optical coherence tomography (OCT) is a powerful three-dimensional (3D) imaging modality with micrometer-scale axial resolution and up to multi-GigaVoxel/s imaging speed. However, the imaging range of high-speed OCT has been limited. Here, we report 3D OCT over cubic meter volumes using a long coherence length, 1310 nm vertical-cavity surface-emitting laser and silicon photonic integrated circuit dual-quadrature receiver technology combined with enhanced signal processing. We achieved 15 μm depth resolution for tomographic imaging at a 100 kHz axial scan rate over a 1.5 m range. We show 3D macroscopic imaging examples of a human mannequin, bicycle, machine shop gauge ...

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    9. Volcano Corporation Enters $11M Supply Agreement with Santec for Swept Source Lasers

      Volcano Corporation Enters $11M Supply Agreement with Santec for Swept Source Lasers

      Volcano Corporation recent Form 8K filing indicates that it has entered an $11.3M supply agreement with Santec Corporation to supply tunable lasers for its intravascular swept source optical coherence tomography (SS-OCT) product. The text at the bottom of this article shows a page from Volcano’s recent 8k filing (see Link ). Volcano has been through a long and tortuous path to get a swept source laser for its OCT product since it announced the acquisition of Axsun Technology in December 2008. One of the reasons that Volcano acquired Axsun was Volcano thought that Axsun had swept source laser technology ...

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    10. Happy Holiday's to OCT News Users - 1 Million Views and Counting

      Happy Holiday's to OCT News Users - 1 Million Views and Counting

      I would like to thank all of the users of OCT News for their interest and support of the website over the past year. OCT news remains a non-for-profit website with minimal advertising and is regularly visited by over 150 countries, had well over 1 million views, and sent well over than 100,000 newsletters to subscribers in 2012. Thanks to many of you that have helped power the website by sending in OCT related information (see article), writing for the "Feature Of The Week" section, sending in company press releases, job/studentship openings, calendar events, grant award announcements, clinical ...

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    1-10 of 10
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    1. (1 articles) Institute of Applied Physics
    2. (1 articles) Massachusetts Institute of Technology
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    6. (1 articles) Volcano Corporation
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    Happy Holiday's to OCT News Users - 1 Million Views and Counting Volcano Corporation Enters $11M Supply Agreement with Santec for Swept Source Lasers Cubic meter volume optical coherence tomography Russian Academy of Sciences Gets New Leader - Congratulations to Alexander Sergeyev a Former OCT Researcher Integrated optical system Optical probe using multimode optical waveguide and proximal processing Light detection and ranging system with photonic integrated circuit Optical probe Multi-cavity wavelength tunable laser device Photonic integrated receiver A Deep Learning Framework for the Detection and Quantification of Reticular Pseudodrusen and Drusen on Optical Coherence Tomography Quantitative assessment of textural features in the early detection of diabetic retinopathy with optical coherence tomography angiography