Abstract
Rare-earth ion-doped optical fibers1 are drawing wide attention as the functional fibers applicable to fiber lasers, fiber amplifiers, and fiber-optic sensors. A technique to uniformly dope a high content of rare-earth ions was considered, and a high Nd3+ content low-loss single-mode fiber was developed by using the vapor phase axial deposition (VAD) method and the molecular stuffing technique.2 in which a VAD soot preform is impregnated with an alcohol solution of high-rare-earth ion content.
© 1988 Optical Society of America
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