Title :
Mode attenuation at 1.39 μm in graded-index fibres
Author :
Belov, Alexandr V. ; Dianov, Evgeny M. ; Guryanov, Alexey ; Hopin, V.F.
Author_Institution :
Academy of Sciences of the USSR, Institute of General Physics, Moscow, USSR
Abstract :
The differential mode attenuation αm(λ) in the spectral region of OH absorption (1.2-1.6 μm) has been studied in SiO2/GeO2 core graded-index fibres. It was found that the mode attenuation due to OH absorption Km(λ) at 1.39 μm had its maximum in the fibre core centre. The comparison between the calculated and measured Km(λ) at this wavelength could be used for the determination of OH-ion distribution profile in optical fibres.
Keywords :
germanate glasses; losses; optical fibres; refractive index; silicon compounds; 1.2 to 1.6 microns; 1.39 microns; OH absorption; OH-ion distribution profile; SiO2-GeO2 core; differential mode attenuation; germanate glasses; graded-index fibres; losses; optical fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840385