Title :
On the origin of excess loss in highly GeO2-doped single-mode MCVD fibers
Author :
Bubnov, Mikhail M. ; Semjonov, Sergey L. ; Likhachev, Mikhail E. ; Dianov, Evgeny M. ; Khopin, Vladimir F. ; Salganskii, Mikhail Yu ; Guryanov, Aleksey N. ; Fajardo, James C. ; Kuksenkov, Dmitri V. ; Koh, Joohyun ; Mazumder, Prantik
Author_Institution :
Fiber Opt. Res. Center, Moscow, Russia
Abstract :
Index profile grading and elimination of the central dip have yielded the lowest loss ever reported for modified chemical vapor deposition-made highly GeO2-doped single-mode fibers (1.33 dB/km at 1550 nm for Δ=2.9%). Investigation of the angular distribution of scattering has shown that much of the optical loss in such fibers is due to anomalous scattering. This scattering arises in the region of the central dip in the refractive index profile and at the core-cladding interface.
Keywords :
chemical vapour deposition; germanium compounds; light scattering; optical fibre fabrication; optical fibre losses; refractive index; 1550 nm; GeO2; anomalous scattering; central dip; core-cladding interface; excess loss; highly GeO2-doped single-mode MCVD fibers; index profile grading; modified chemical vapor deposition; optical loss; refractive index profile; scattering angular distribution; Fiber nonlinear optics; Nonlinear optical devices; Optical fiber devices; Optical fiber losses; Optical fibers; Optical refraction; Optical scattering; Optical variables control; Rayleigh scattering; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.829756
