Strength and Reliability of Metal-Coated Optical Fibers at High Temperatures

1998 ◽  
Vol 531 ◽  
Author(s):  
A. S. Biriukov ◽  
V. A. Bogatyrjov ◽  
V. F. Lebedev ◽  
A. A. Sysolyatin ◽  
A. G. Khitun
Keyword(s):  
Experimental Study ◽  
Melting Point ◽  
High Temperatures ◽  
Optical Fibers ◽  
Temperature Effects ◽  
Degradation Mechanism ◽  
Copper Coating ◽  
Mechanical Reliability ◽  
Optical Losses ◽  
Fiber Degradation

AbstractHermetically metal coated fibers are candidates for applications at high temperatures. To date, various metals with melting point up to 1400 °C have been used to coat fibers by the freezing technique. However, the major problems consist of ensuring mechanical reliability and acceptable optical losses in metal coated fibers at high temperatures. We present an experimental study of the temperature effects at 20 – 1050 °C on the performance of optical fibers with copper coating. Specific fiber degradation mechanism have been revealed

Effect of metal coating on the optical losses in heated optical fibers

2009 ◽  
Vol 35 (4) ◽  
pp. 365-367 ◽  
Author(s):  
V. V. Voloshin ◽  
I. L. Vorob’ev ◽  
G. A. Ivanov ◽  
V. A. Isaev ◽  
A. O. Kolosovskii ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Metal Coating ◽  
Optical Losses

Absorption loss at high temperatures in aluminum- and copper-coated optical fibers

2011 ◽  
Vol 56 (1) ◽  
pp. 90-96 ◽  
Author(s):  
V. V. Voloshin ◽  
I. L. Vorob’ev ◽  
G. A. Ivanov ◽  
V. A. Isaev ◽  
A. O. Kolosovskii ◽  
...  
Keyword(s):  
High Temperatures ◽  
Optical Fibers ◽  
Absorption Loss

scholarly journals Irradiation temperature effects on the induced point defects in Ge-doped optical fibers.

2017 ◽  
Vol 169 ◽  
pp. 012008
Author(s):  
A. Alessi ◽  
I. Reghioua ◽  
S. Girard ◽  
S. Agnello ◽  
D. Di Francesca ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Point Defects ◽  
Temperature Effects ◽  
Irradiation Temperature

Thermal Analysis of Nomex® and Kevlar® Fibers

1977 ◽  
Vol 47 (1) ◽  
pp. 62-66 ◽  
Author(s):  
J. R. Brown ◽  
B. C. Ennis
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
Glass Transition ◽  
Melting Point ◽  
Transition Region ◽  
High Temperatures ◽  
High Performance ◽  
Polymer Melt ◽  
Glass Transition Region ◽  
Dta Curves

DTA, TG, and TMA curves of commercial Kevlar® 49 and Nomex® fibers have been used to assess their behavior at high temperatures. The fibers lost absorbed water around 100°C, and a glass transition was reflected in the DTA and TMA curves in the region of 300°C. Difficulties in the interpretation of DTA and TMA curves in the glass-transition region and in the assignments of Tv‘s for these high-performance fibers are discussed. Whereas Kevlar 49 showed both a crystalline melting point (560°C) and a sharp endothermal thermal decomposition (590°C), Nomex showed only the latter (440°C) and no evidence of melting from the DTA curves. The endothermal decomposition peaks apparently correspond to “polymer melt temperatures” reported for related materials, and correlate well with the TG and TMA features. During thermal analysis of Kevlar 49, oxidation occurs more readily than thermal decomposition, but the latter predominates for Nomex. Differences between dyed and undyed Nomex were due to differences in yarn constitution.

Sign in / Sign up

Export Citation Format

Share Document