Performance analysis of DWDM system for different modulation schemes using variations in channel spacing

D Sharma, YK Prajapati - Journal of Optical Communications, 2016 - degruyter.com
… BER and maximum transmission coverage upto 4,000 km … DQPSK signal. The second
MZI modulator is being employed for purpose of converting NRZ-DQPSK signals into RZ-DQPSK

Analysis Modulation Formats in DWDM Transmission System

L Li, WEI Jian-yi, LI Hong-an… - … Indonesian Journal of …, 2012 - journal.esperg.com
… reduce the crosstalk between the channels in the DWDM systems. But the wider pulse width
is … From Figure 5(b) we can see that the widest optical spectrum of RZDQPSK reduces the …

Impact of channel plan and dispersion map on hybrid DWDM transmission of 42.7-Gb/s DQPSK and 10.7-Gb/s OOK on 50-GHz grid

S Chandrasekhar, X Liu - IEEE Photonics Technology Letters, 2007 - ieeexplore.ieee.org
… study on hybrid transmission of 40-Gb/s DQPSK and 10-Gb/s … zero (RZ)-DQPSK on 50-GHz
channel grid was transmitted over … the transmission performance of the 42.7-Gb/s RZ-DQPSK

Analysis modulation formats of DQPSK in WDM-PON system

L Li, J Zhang, D Duan, A Yin - Optik, 2012 - Elsevier
… in the DWDM transmission system, … transmission capacity, but also having higher
tolerance of chromatic dispersion and nonlinear effects. In contrast with the RZ-DQPSK, CS-RZ-DQPSK

Investigation of optimum pulse shape for 112 Gbps DP-DQPSK in DWDM transmission

V Tiwari, D Sikdar, MN Jyothi, G Dixit, VK Chaubey - Optik, 2013 - Elsevier
transmission systems RZ and NRZ are the two mainly chosen pulse shapes. In linear
transmission systems RZ … shape for DP-DQPSK 112 Gbps transmission in DWDM optical network. …

Performance evaluation and enhancements of 42.7 Gb/s DWDM transmission system using different modulation formats

S Ghoniemy, KF George… - 2011 Ninth Annual …, 2011 - ieeexplore.ieee.org
… This figure also showed excellent results if we compared the results of this system with the
results of the first system when the RZDQPSK channel was transmitted over the SSMF with …

Transmission of RZ-DQPSK over 6500 km with 0.66 bit/s/Hz spectral efficiency

T Tokle, CR Davidson, M Nissov, JX Cai… - IEEE/LEOS 2004 …, 2004 - ieeexplore.ieee.org
… Abstract: Transmission of 12.5Gbit/s RZ-DQPSK signals over … -oceanic transmission using
DQPSK in DWDM systems with … experiment, we transmit 12.5 Gbit/s RZ-DQPSK signals over a …

Terabit transmission at 42.7-Gb/s on 50-GHz grid using hybrid RZ-DQPSK and NRZ-DBPSK formats over 16 x 80 km SSMF spans and 4 bandwidth-managed …

S Chandrasekhar, X Liu, D Kilper, CR Doerr… - Journal of lightwave …, 2008 - opg.optica.org
… -distance DWDM network that is based on bandwidth-managed ROADM to support 0.8-bit/s/Hz
spectral efficiency at 42.7 Gb/s, using hybrid modulation formats of 50% RZ-DQPSK and …

400Gb/s (4× 100Gb/s) orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040km SMF-28

J Yu, X Zhou, MF Huang, D Qian, PN Ji, T Wang… - Optics …, 2009 - opg.optica.org
… In [14], Goldfarb demonstrated that orthogonal DWDM can be used to … transmission of 4
× 100-Gb/s orthogonal PDM-RZ-QPSK DWDM signal, where the orthogonal 400-Gb/s DWDM

Investigation of 2-b/s/Hz 40-gb/s DWDM transmission over 4/spl times/100 km SMF-28 fiber using RZ-DQPSK and polarization multiplexing

PS Cho, G Harston, CJ Kerr… - IEEE Photonics …, 2004 - ieeexplore.ieee.org
… the feasibility of DWDM transmission using DQPSK and polarization multiplexing. In …
DWDM transmission system with 4-b (8-state) per-symbol coding using 12.5-Gsymbols/s RZ-DQPSK