Kato, T.T.KatoTanimura, T.T.TanimuraRichter, T.T.RichterElschner, R.R.ElschnerSchmidt-Langhorst, C.C.Schmidt-LanghorstSchubert, C.C.SchubertWatanabe, S.S.Watanabe2022-03-052022-03-052016https://publica.fraunhofer.de/handle/publica/24427510.1109/LPT.2016.2552243We propose an extended coherent optical add/drop multiplexing scheme, in which an individual polarization tributary in a polarization-division multiplexed orthogonal frequency-division multiplexed signal is erased and added by frequency conversion in fiber, which is sequentially inserted in a transmission line. In the scheme, a polarization tributary can be inserted and replaced in a dual polarization spectrally overlapped ultra-dense multiplexed signal. In a proof-of-concept demonstration, we investigate the performance of the proposed optical add/drop multiplexing scheme. A 25-Gb/s quadrature phase-shift keying tributary within a dual-polarization three subcarrier orthogonal frequency division multiplexed signal is erased and added with negligible distortion of the orthogonal polarization tributary and the adjacent subcarriers.en535journal article