Results 171 to 180 of about 15,902 (222)
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2002
Polymer optical fibers, like other technological products, are subjected throughout the whole of their service life to a great many kinds of stress from the environment — mechanical, climatic, chemical, biological, and radiometric. As a result of these stress factors, physical and chemical alterations may arise in the materials used.
Werner Daum +3 more
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Polymer optical fibers, like other technological products, are subjected throughout the whole of their service life to a great many kinds of stress from the environment — mechanical, climatic, chemical, biological, and radiometric. As a result of these stress factors, physical and chemical alterations may arise in the materials used.
Werner Daum +3 more
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2001
Optische Polymerfasern unterliegen, wie andere technische Erzeugnisse auch, wahrend ihrer gesamten Einsatzdauer einer Vielzahl von mechanischen, klimatischen, chemischen, biologischen und strahlungsphysikalischen Beanspruchungen aus ihrer Umgebung.
W. Daum +3 more
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Optische Polymerfasern unterliegen, wie andere technische Erzeugnisse auch, wahrend ihrer gesamten Einsatzdauer einer Vielzahl von mechanischen, klimatischen, chemischen, biologischen und strahlungsphysikalischen Beanspruchungen aus ihrer Umgebung.
W. Daum +3 more
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POF is overcoming silica in bit rate
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001The great advantage of the perfluorinated (PF) polymer base graded index polymer optical fiber ( GI POF) in bandwidth was clarified in detail. The PF polymer base POF has the potential of achieving the highest bit rate among existing physical media including even silica fiber, since the material dispersion of the PF polymer is lower than those of ...
Takaaki Ishigure, Yasuhiro Koike
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De Economist, 1969
Buying on the instalment plan is far from popular in The Netherlands. A survey of Dutch households, taken in 1965, shows that over twothirds of those interviewed rated purchasing goods „on tick” negatively.
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Buying on the instalment plan is far from popular in The Netherlands. A survey of Dutch households, taken in 1965, shows that over twothirds of those interviewed rated purchasing goods „on tick” negatively.
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2002
An optical transmission system essentially consists of three components. The transmitter converts the electric sequence of signals into an optical one and inputs it into the optical transmission channel, in this case the polymer optical fibers. The transmission channel, which may contain further active or passive components in addition to the fibers ...
Werner Daum +3 more
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An optical transmission system essentially consists of three components. The transmitter converts the electric sequence of signals into an optical one and inputs it into the optical transmission channel, in this case the polymer optical fibers. The transmission channel, which may contain further active or passive components in addition to the fibers ...
Werner Daum +3 more
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2001
Die ersten POF wurden bereits Ende der 60er Jahre von der Firma DuPont hergestellt. Aufgrund der unvollkommenen Reinigung der Ausgangsmaterialien lag die Dampfung noch im Bereich von 1000 dB/km. In den 70er Jahren konnten die Verluste nahe an die theoretischen Grenzen von ca. 125 dB/km bei 650 nm Wellenlange reduziert werden.
W. Daum +3 more
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Die ersten POF wurden bereits Ende der 60er Jahre von der Firma DuPont hergestellt. Aufgrund der unvollkommenen Reinigung der Ausgangsmaterialien lag die Dampfung noch im Bereich von 1000 dB/km. In den 70er Jahren konnten die Verluste nahe an die theoretischen Grenzen von ca. 125 dB/km bei 650 nm Wellenlange reduziert werden.
W. Daum +3 more
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Workshop on Specialty Optical Fibers and their Applications, 2013
The lecture highlights the use of polymer optical fibers (POFs) as sensors in selected applications like structural health monitoring in geotechnical and civil engineering, composites monitoring, healthcare monitoring and personnel protection. The results achieved in these applications fields in the framework of several German and European projects ...
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The lecture highlights the use of polymer optical fibers (POFs) as sensors in selected applications like structural health monitoring in geotechnical and civil engineering, composites monitoring, healthcare monitoring and personnel protection. The results achieved in these applications fields in the framework of several German and European projects ...
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Equalizer Implementations for SI-POF
2012In this chapter we introduce optical receivers with POF equalizers to enhance the performance for giga-bit communication over SI-POF. A single-chip fully integrated optical receiver with an integrated POF-equalizer will be introduced. The integration of large-area photodiodes, TIA, POF equalizer and 50 Ω driver on a single chip enhances the performance
Mohamed Atef, Horst Zimmermann
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Hybrid POF/VLC Links Based on a Single LED for Indoor Communications
Photonics, 2021Vicenç Almenar +2 more
exaly