Browsing by Author "Hong-Minh Nguyen"

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56-Gbps 4-PAM System over Nearly 40 km Transmission by Employing an O-band EML and SOA
(2017-01-01)
Hong-Minh Nguyen
;
Chuang, Chun-Yen
;
Shie, Bobby
;
Wei, Chia-Chien
;
Liu, Jun-Jie
This work demonstrates a 56-Gbps 4-PAM EML-based transmission system. Using an O-band SIA to increase power budget and FFE/DFE to compensate SIA-induced ISM 37.8-km transmission is successfully implemented with BER below the FEC limit (2 x 10(-4)).
A High Loss Budget 400-Gbps WDM-OFDM Long-Reach PON over 60 km Transmission by 10G-class EAM and PIN without In-line or Pre-Amplifier
(2017-01-01)
Chuang, Chun-Yen
;
Wei, Chia-Chien
;
Liu, Jun-Jie
;
Wu, Hsin-Yu
;
Hong-Minh Nguyen
A 400-Gbps WDM-OFDM LR-PON over 60-km SMF is demonstrated with a 10G class EAM and PIN. 25-dB loss budget is realized without in-line or pre-amplifier to economically support 128 ONUs with 3.1-Gbps/ONU capacity.
Reducing the Impact of Nonlinear Distortion in DML-Based OFDM Transmission by Frequency Gap
(2018-12-01)
Hong-Minh Nguyen
;
Wei, Chia-Chien
;
Chuang, Chun-Yen
;
Chen, Jyehong
;
Taga, Hidenori
This paper demonstrates a novel approach to reducing in-band nonlinear distortion in DML-based OFDM transmission by introducing a frequency gap between the optical carrier and signal band. This scheme greatly increases tolerance to nonlinear distortion caused by the interaction between laser chirp and chromatic dispersion. Tuning the frequency gap between 2 to 5 GHz (in accordance with the transmission distance) makes it possible to mitigate a considerable proportion of dispersion-induced nonlinear distortion. Experiment results revealed that the proposed scheme can increase the achievable data rate by up to 136%, compared to conventional OFDM over 300 km of dispersion-uncompensated standard single mode fiber. Following transmission over more than 200 km, the proposed modulation scheme also outperforms conventional OFDM incorporating with a Volterra equalizer by up to 24%. We also conducted optimization of DML bias current and driving voltage. Our results show that operating at high bias and driving voltage can greatly improve data rates following the mitigation of distortion via gapped OFDM.