
9.6.5 Antimony-Doped Alumino-Silicate
A germanium-free antimony (Sb) and thulium co-doped alumino-silicate
optical fiber was designed and developed by Sahu et al. [46]. The fiber was
fabricated by the MCVD process, along with the solution-doping technique.
The fiber, being not intrinsically photosensitive, was H
2
loaded for 2 weeks
Table 9.10
Yb-doped DC SM all-silica optical fiber data
Fiber model: Yb 708
Core host material: Germano-alumino-silicate
Core diameter: 7.0 + 0.5 mm
Numerical aperture: 0.11 + 0.02
Theoretical LP
11
cutoff wavelength: 1000 + 50 nm
Peak absorption @ 976 nm: 8 dB/m
Background loss @ 1030 nm: <5 dB/km
First clad material: Germano-phospho-silicate ...