TY - JOUR

T1 - Subcarrier Index-Power Modulated-Optical OFDM with Dual Superposition Multiplexing for Directly Modulated DFB-based IMDD PON Systems

AU - Chen, Lin

AU - Halabi, Fadi

AU - Giddings, Roger Philip

AU - Zhang, Junjie

AU - Tang, Jianming

N1 - This work was supported in part by the Ser Cymru National Research Network in Advanced Engineering and Materials under Grants NRN024 and NRN147; in part by the DESTINI project under the Welsh Government SMART Expertise scheme; and in part by the Science and Technology Commission of Shanghai Municipality under Grant SKLSFO2017-01.

PY - 2018/12

Y1 - 2018/12

N2 - A low signal modulation format-enabled highly spectrally efficient new transmission technique termed subcarrier index-power modulated optical OFDM with dual superposition multiplexing (SIPM-OOFDM-DSPM) is proposed and investigated, for the first time, in intensity modulation and direct detection (IMDD) passive optical network (PON) systems incorporating directly modulated DFB lasers (DMLs). The dual superposition multiplexing (DSPM) operation passively adds two low signal modulation format-encoded complex numbers and assigns the sum to subcarrier index-power modulation (SIPM)-generated low and high power subcarriers. Detailed numerical explorations of SIPM-OOFDM-DSPM performances over additive white Gaussian noise (AWGN) channels are undertaken, based on which optimum key transceiver parameters are identified. In comparison with previously published techniques, over simple DML-based IMDD PON systems, SIPM-OOFDM-DSPM considerably improves the signal transmission capacity, system power budget and performance tolerance to both chromatic dispersion and fiber nonlinearity. The work suggests that SIPM-OOFDM-DSPM is a promising signal transmission technique capable of providing cost-sensitive PON systems with improved transmission capacity, performance flexibility and adaptability.

AB - A low signal modulation format-enabled highly spectrally efficient new transmission technique termed subcarrier index-power modulated optical OFDM with dual superposition multiplexing (SIPM-OOFDM-DSPM) is proposed and investigated, for the first time, in intensity modulation and direct detection (IMDD) passive optical network (PON) systems incorporating directly modulated DFB lasers (DMLs). The dual superposition multiplexing (DSPM) operation passively adds two low signal modulation format-encoded complex numbers and assigns the sum to subcarrier index-power modulation (SIPM)-generated low and high power subcarriers. Detailed numerical explorations of SIPM-OOFDM-DSPM performances over additive white Gaussian noise (AWGN) channels are undertaken, based on which optimum key transceiver parameters are identified. In comparison with previously published techniques, over simple DML-based IMDD PON systems, SIPM-OOFDM-DSPM considerably improves the signal transmission capacity, system power budget and performance tolerance to both chromatic dispersion and fiber nonlinearity. The work suggests that SIPM-OOFDM-DSPM is a promising signal transmission technique capable of providing cost-sensitive PON systems with improved transmission capacity, performance flexibility and adaptability.

U2 - 10.1109/JPHOT.2018.2874945

DO - 10.1109/JPHOT.2018.2874945

M3 - Article

VL - 10

JO - IEEE Photonics Journal

JF - IEEE Photonics Journal

SN - 1943-0655

IS - 6

M1 - 7908113

ER -