TY - JOUR
T1 - Coherent correlator and equalizer using a reconfigurabl all-optical tapped delay line
AU - Chitgarha, Mohammad Reza
AU - Khaleghi, Salman
AU - Yilmaz, Omer F.
AU - Tur, Moshe
AU - Haney, Michael W.
AU - Langrock, Carsten
AU - Fejer, Martin M.
AU - Willner, Alan E.
PY - 2013/7/1
Y1 - 2013/7/1
N2 - We experimentally demonstrate a reconfigurable optical tapped delay line in conjunction with coherent detection to search multiple patterns among quadrature phase shift keying (QPSK) symbols in 20 Gbaud data channel and also to equalize 20 and 31 Gbaud QPSK, 20 Gbaud 8 phase shift keying (PSK), and 16 QAM signals. Multiple patterns are searched successfully on QPSK signals, and correlation peaks are obtained at the matched patterns. QPSK, 8 PSK, and 16 QAM signals are also successfully recovered after 25 km of SMF-28 with average EVMs of 8.3%, 8.9%, and 7.8%. A penalty of <1 dB optical signal to noise penalty is achieved for a 20 Gbaud QPSK signal distorted by up to 400 ps/nm dispersion.
AB - We experimentally demonstrate a reconfigurable optical tapped delay line in conjunction with coherent detection to search multiple patterns among quadrature phase shift keying (QPSK) symbols in 20 Gbaud data channel and also to equalize 20 and 31 Gbaud QPSK, 20 Gbaud 8 phase shift keying (PSK), and 16 QAM signals. Multiple patterns are searched successfully on QPSK signals, and correlation peaks are obtained at the matched patterns. QPSK, 8 PSK, and 16 QAM signals are also successfully recovered after 25 km of SMF-28 with average EVMs of 8.3%, 8.9%, and 7.8%. A penalty of <1 dB optical signal to noise penalty is achieved for a 20 Gbaud QPSK signal distorted by up to 400 ps/nm dispersion.
UR - http://www.scopus.com/inward/record.url?scp=84879677533&partnerID=8YFLogxK
U2 - 10.1364/OL.38.002271
DO - 10.1364/OL.38.002271
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AN - SCOPUS:84879677533
SN - 0146-9592
VL - 38
SP - 2271
EP - 2273
JO - Optics Letters
JF - Optics Letters
IS - 13
ER -