Title :
Gain characteristics of ER3+ doped fiber with a quasi-confined structure
Author :
Kagi, Nobuyuki ; Oyobe, Akira ; Nakamura, Kazunori
Author_Institution :
Furukawa Electr. Co. Ltd., Yokohama, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
The fiber-structure dependence of the gain characteristics of Er 3+ doped fibers pumped at 1.48 μm is analyzed. The optimum V value is derived theoretically and experimentally. For step-index fibers, the optimum V value is 1.6, which is smaller than that needed to minimize spot size. The fiber with a small V value enjoys a large Er3+ confinement effect. For laser diode pumping, an efficiency of 1.7 dB/mW is achieved at 1.536 μm. The bending characteristics are also described
Keywords :
erbium; fibre lasers; optical pumping; 1.48 micron; 1.536 micron; Er3+ doped fibers; bending characteristics; efficiency; fiber-structure dependence; gain characteristics; large Er3+ confinement effect; laser diode pumping; spot size; step-index fibers; Erbium; Erbium-doped fiber amplifier; Optical crosstalk; Optical fiber polarization; Optical fiber sensors; Optical fibers; Optical pumping; Optical sensors; Particle beam optics; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
