We present an erbium-doped dispersion-compensating fiber made up of two asymmetric concentric cores, inner and outer matched claddings, and erbium located in the central core only. We demonstrate a high negative chromatic dispersion value [ -700ps/(nm km) at 1568 nm], significant modification of the gain spectrum compared with that of a classic erbium-doped fiber amplifier, and 30-dB peak small-signal gain at 1535 and 1553 nm.
© 2004 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2410) Fiber optics and optical communications : Fibers, erbium
J. Maury, J. L. Auguste, S. Février, J. M. Blondy, B. Dussardier, and G. Monnom, "Conception and characterization of a dual-concentric-core erbium-doped dispersion-compensating fiber," Opt. Lett. 29, 700-702 (2004)