All fiber-based 160-Gbit/s add/drop multiplexer incorporating a 1-m-long Bismuth Oxide-based ultra-high nonlinearity fiber

We experimentally demonstrate an all fiber-based, compact add/drop multiplexer (ADM) of a 160 Gbit/s optical time division multiplexed signal using only 1 -m length of our fabricated Bi₂O₃-based step index type optical fiber with an ultra-high nonlinearity of ∼1100 W^-1 km^-1 The ADM is based on the cross phase modulation-induced nonlinear polarization rotation principle and simultaneous add/drop operation was easily achieved by use of a polarization beam splitter after the Bi₂O ₃-based nonlinear fiber. Error-free add/drop operation is readily achieved at multiplexed data rates of both 80 Gbit/s and 160 Gbit/s.