Distributed birefringence measurement in optical fibers with ultra-high spatial resolution by brillouin gain analysis

2007 ◽  
Author(s):  
Y. Yamamoto ◽  
E. Sasaoka
Keyword(s):  
Spatial Resolution ◽  
Optical Fibers ◽  
High Spatial Resolution ◽  
Brillouin Gain

scholarly journals High spatial resolution distributed sensing in optical fibers by Brillouin gain-profile tracing

2010 ◽  
Vol 18 (8) ◽  
pp. 8671 ◽  
Author(s):  
Tom Sperber ◽  
Avishay Eyal ◽  
Moshe Tur ◽  
Luc Thévenaz
Keyword(s):  
Spatial Resolution ◽  
Optical Fibers ◽  
High Spatial Resolution ◽  
Distributed Sensing ◽  
Gain Profile ◽  
Brillouin Gain

A Readout Scheme Providing High Spatial Resolution for Distributed Fluorescent Sensors on Optical Fibers

2001 ◽  
Vol 73 (5) ◽  
pp. 1007-1015 ◽  
Author(s):  
Barry J. Prince ◽  
Alan W. Schwabacher ◽  
Peter Geissinger
Keyword(s):  
Spatial Resolution ◽  
Optical Fibers ◽  
High Spatial Resolution ◽  
Fluorescent Sensors ◽  
Readout Scheme

High spatial resolution AEM observations of yttrium segregation in chromia scales grown on Co-45%Cr

1986 ◽  
Vol 44 ◽  
pp. 518-519
Author(s):  
K. Przybylski ◽  
A. J. Garratt-Reed ◽  
G. J. Yurek
Keyword(s):  
Spatial Resolution ◽  
Outer Surface ◽  
Maximum Concentration ◽  
High Spatial Resolution ◽  
Reactive Elements ◽  
Chromia Scales

The addition of so-called “reactive” elements such as yttrium to alloys is known to enhance the protective nature of Cr2O3 or Al2O3 scales. However, the mechanism by which this enhancement is achieved remains unclear. An A.E.M. study has been performed of scales grown at 1000°C for 25 hr. in pure O2 on Co-45%Cr implanted at 70 keV with 2x1016 atoms/cm2 of yttrium. In the unoxidized alloys it was calculated that the maximum concentration of Y was 13.9 wt% at a depth of about 17 nm. SIMS results showed that in the scale the yttrium remained near the outer surface.

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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