scholarly journals Frequency interleaving towards spectrally efficient directly detected optical OFDM for next-generation optical access networks

2010 ◽  
Vol 18 (22) ◽  
pp. 23161 ◽  
Author(s):  
Lenin Mehedy ◽  
Masuduzzaman Bakaul ◽  
Ampalavanapillai Nirmalathas
Keyword(s):  
Access Networks ◽  
Optical Access Networks ◽  
Next Generation ◽  
Optical Access ◽  
Optical Ofdm ◽  
Spectrally Efficient

Increasing Capacity and Suppress the Crosstalk by Using Hybrid Optical OFDM/WDM System

2013 ◽  
Vol 594-595 ◽  
pp. 1041-1044 ◽  
Author(s):  
A.O. Aldhaibani ◽  
S.A. Aljunid ◽  
Hilal A. Fadhil ◽  
M.S. Anuar
Keyword(s):  
Data Rate ◽  
Access Networks ◽  
Signal Spectrum ◽  
Optical Access Networks ◽  
Next Generation ◽  
Optical Access ◽  
Qam Modulation ◽  
Optical Ofdm ◽  
Ofdm Signals ◽  
Bandwidth Demand

Hybrid optical OFDM/WDM system is proposed to provide longer reach and larger capacity comparing with existing PON systems in order to meet the ever increasing bandwidth demand and data rate of next generation optical access networks. In this paper, two channels using different modulation at 10 Gb/s are used for downstream link. OFDM signals occupy different portions of the available signal spectrum for signal transmissions by using WDM. As a result, the system has good performance based on SNR with 50 km distance and QAM modulation delivers better performance compared with PSK.

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