title: All-optical switching application based on optical nonlinearity of Yb(3+) doped aluminosilicate glass fiber with a long-period fiber gratings pair.
abstract: We propose a new fiber-type all-optical switching device based on the optical nonlinearity of Yb(3+) doped fiber and a long-period fiber gratings(LPG) pair. The all-optical ON-OFF switching with the continuous wave laser signal at ~1556nm in the LPG pair including the 25.5cm long Yb(3+) doped fiber was demonstrated up to ~200Hz upon pumping with the modulated square wave pulses at 976nm, where a full optical switching with the ~18dB extinction ratio was obtained at the launched pump power of ~35mW.
authors.forename: Yune
authors.initials: Y
authors.lastname: Kim
authors.forename: Nam
authors.initials: N
authors.lastname: Kim
authors.forename: Youngjoo
authors.initials: Y
authors.lastname: Chung
authors.forename: Un-Chul
authors.initials: UC
authors.lastname: Paek
authors.forename: Won-Taek
authors.initials: WT
authors.lastname: Han