scholarly journals Towards Highly Efficient Polymer Fiber Laser Sources for Integrated Photonic Sensors

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4086 ◽  
Author(s):  
Simon Spelthann ◽  
Stefanie Unland ◽  
Jonas Thiem ◽  
Florian Jakobs ◽  
Jana Kielhorn ◽  
...  
Keyword(s):  
Polymer Fiber ◽  
Optical Analysis ◽  
Numerical Parameter ◽  
Medical Sciences ◽  
Polymer Optical Fiber ◽  
Flexible Technology ◽  
Integrated Optical ◽  
Laser Sources ◽  
Photonic Sensors ◽  
High Output

Lab-on-a-Chip (LoC) devices combining microfluidic analyte provision with integrated optical analysis are highly desirable for several applications in biological or medical sciences. While the microfluidic approach is already broadly addressed, some work needs to be done regarding the integrated optics, especially provision of highly integrable laser sources. Polymer optical fiber (POF) lasers represent an alignment-free, rugged, and flexible technology platform. Additionally, POFs are intrinsically compatible to polymer microfluidic devices. Home-made Rhodamine B (RB)-doped POFs were characterized with experimental and numerical parameter studies on their lasing potential. High output energies of 1.65 mJ, high slope efficiencies of 56 % , and 50 % -lifetimes of ≥900 k shots were extracted from RB:POFs. Furthermore, RB:POFs show broad spectral tunability over several tens of nanometers. A route to optimize polymer fiber lasers is revealed, providing functionality for a broad range of LoC devices. Spectral tunability, high efficiencies, and output energies enable a broad field of LoC applications.

Miniature semiconductor ring laser sources for integrated optical circuits

1990 ◽  
Author(s):  
Wei Chen ◽  
Peter J. R. Laybourn ◽  
Andrzej F. Jezierski ◽  
Thomas F. Krauss ◽  
P. W. Webb
Keyword(s):  
Ring Laser ◽  
Integrated Optical ◽  
Laser Sources ◽  
Semiconductor Ring Laser ◽  
Optical Circuits ◽  
Integrated Optical Circuits

Intrinsic Polymer Optical Fiber Sensors for High-Strain Applications

Aerospace ◽  
2005 ◽  
Author(s):  
Sharon Kiesel ◽  
Patrick Van Vickle ◽  
Kara Peters ◽  
Tasnim Hassan ◽  
Mervyn Kowalsky
Keyword(s):  
Optical Fiber ◽  
Mechanical Response ◽  
Large Strain ◽  
Optical Fiber Sensors ◽  
Large Strains ◽  
Polymer Fiber ◽  
Polymer Optical Fiber ◽  
Fiber Sensors ◽  
Performance Based Assessment ◽  
New Sensors

This article proposes intrinsic polymer fiber sensors for the performance-based assessment and health monitoring of civil infrastructure systems. Such sensors would allow the dynamic measurement of large strains as required for structures during earthquake loading. Furthermore, the interferometric nature of the sensor permits high accuracy for such measurements. However, the use of the polymer fiber sensors at large strain magnitudes is not without significant challenges as compared to conventional silica optical fiber sensors due to the finite deformation of the fiber and nonlinear photoelastic effects. This article analyzes the implications of the large deformations on the opto-mechanical response of the sensors, derives the sensor opto-mechanical properties to be obtained through sensor calibrations, and demonstrates the data acquisition method to be utilized for the new sensors.

Лазерные источники с низким уровнем шума: от микроволновой фотоники до плазмоники и биотехнологий

2021 ◽  
Vol 14 (3-4) ◽  
pp. 168-173
Author(s):  
А.А. Фотиади
Keyword(s):  
High Tech ◽  
State University ◽  
Distributed Sensors ◽  
Biochemical Processes ◽  
Wide Range ◽  
Integrated Optical ◽  
Laser Sources ◽  
And Mathematics ◽  
Technological Research Institute ◽  
Future Plans

Исследования в области оптоэлектроники, нелинейной оптики, волоконных лазеров не ограничиваются только фундаментальными задачами, на их основе создаются различные датчики, приборы и устройства для широкого круга применений – от микроволновой фотоники до биотехнологий. Ряд направлений, таких как создание интегрированных оптических чипов, требует уменьшения уровня шума лазерных источников, другие нуждаются в разработке новых принципов создания распределенных датчиков физических величин, методик фотодинамической терапии различных поверхностных новообразований и управления биохимическими процессами в области клеточной терапии. Наша лаборатория работает в контексте этих направлений и в перспективе может стать центром, предлагающим научное сопровождение проектов по "Радиофотонике" и "Нанофотонике", реализуемых совместно с наукоемкими коммерческими компаниями. О лаборатории квантовой электроники и оптоэлектроники Научно-исследовательского технологического института имени С.П.Капицы (НИТИ) Ульяновского государственного университета, проводимых в ней исследованиях и их перспективах рассказывает кандидат физико-математических наук, руководитель лаборатории квантовой электроники и оптоэлектроники Фотиади Андрей Александрович. Studies in optoelectronics, nonlinear optics and fiber lasers are not limited to fundamental tasks only but also include design of various sensors, instruments and devices intended for a wide range of applications starting from microwave photonics to biotechnology. A number of tasks, such as development of the integrated optical chips, require a progress in laser sources of high spectral purity while other directions need advanced distributed sensors of physical values to be developed, techniques for photodynamic therapy of various kinds of superficial tumors and means enabling to control biochemical processes in the cell therapy. Our laboratory works in these areas and in the future it can become a center offering scientific support for projects in Radiophotonics and Nanophotonics, being realized in collaboration with high-tech commercial companies. The Head of the Quantum Electronics and Optoelectronics Laboratory of Technological Research Institute named after S.P.Kapitza of Ulyanovsk State University, Cand. Sc. (Physics and Mathematics) Dr. Andrei A. Fotiadi tells about the studies conducted in the laboratory, the prospects of current research and future plans.

The Commitment of the Documentation Service of the Swiss Academy of Medical Sciences for the Impartment of Evidence Based Medicine

Swiss Surgery ◽  
1999 ◽  
Vol 5 (4) ◽  
pp. 183-185
Author(s):  
Bleuer
Keyword(s):  
Evidence Based Medicine ◽  
Cochrane Library ◽  
Evidence Based ◽  
Medical Sciences ◽  
Based Medicine

Die mit dem Aufkommen der elektronischen Medien einhergehende Informationsflut hat die Erwartungen an den Dokumentationsdienst (DOKDI) der Schweizerischen Akademie der Medizinischen Wissenschaften verändert: Insbesondere Evidence Based Medicine (EBM) verlangt nicht nur die Beschaffung von Information, sondern auch eine Selektion hinsichtlich Qualität und Relevanz: Die sich aus der klinischen Situation ergebende Frage fordert eine Antwort, die inhaltlich richtig ist und in der konkreten Situation auch weiterhilft. Dem Ideal, sich durch kritische Lektüre der Originalarbeiten ein Bild über die vorhandene Evidenz für die Richtigkeit eines bestimmten Prozederes zu verschaffen, stehen in der Praxis meist Zeitmangel und methodische Schwierigkeiten im Weg; man wird sich deshalb oft auf die durch andere erarbeitete Evidenz abstützen müssen und z.B. die Cochrane Library konsultieren. Der DOKDI engagiert sich sowohl bei der Erarbeitung von systematischen Übersichtsarbeiten als auch bei der Dissemination der gefundenen Evidenz, indem er seine Erfahrung in der Dokumentation mit elektronischen Medien und die entsprechende Infrastruktur zur Verfügung stellt. Als Ergänzung zu diesen Aktivitäten hat die Akademie einen Grant zur Ausbildung von EBM-Tutoren gesprochen. In einem einwöchigen Kurs in Oxford werden Kliniker zu EBM-Tutoren ausgebildet: Dies wird zukünftig ermöglichen, vermehrt EBM-Workshops in der Schweiz durchzuführen.

Design and simulation of an on-board lithium niobate integrated optical preprocessor

1990 ◽  
Vol 137 (6) ◽  
pp. 347
Author(s):  
M.N. Armenise ◽  
V.M.N. Passaro
Keyword(s):  
Lithium Niobate ◽  
Integrated Optical

Ernährungsintervention zur Regulation des High-Output Syndroms bei intestinalen Stomata

2019 ◽  
Author(s):  
T Guhl ◽  
C Siegmann-Thoss ◽  
M Adolph
Keyword(s):  
High Output

Pränatale Diagnose und Therapie zweier fetaler AV-Malformationen mit High-Output-Syndrom

2005 ◽  
Vol 127 (03) ◽  
Author(s):  
D Kamil ◽  
A Geipel ◽  
A Kempe ◽  
J Breuer ◽  
U Gembruch ◽  
...  
Keyword(s):  
Pränatale Diagnose ◽  
Diagnose Und Therapie ◽  
High Output
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