Title :
Optimized sensitivity direct detection O-OFDM with multi level subcarrier modulation
Author :
Buchali, Fred ; Dischler, R.
Author_Institution :
Alcatel-Lucent, Res. & Innovation, Stuttgart, Germany
Abstract :
We compared direct-detection optical-OFDM systems with QPSK, QAM 16 and QAM64 subcarrier modulation for increase of bitrate. Reduced sensitivties of 7.1 dB and 14.8 dB have been found while increasing the data rate from 10 to 20 and 30Gb/s.
Keywords :
OFDM modulation; optical modulation; quadrature phase shift keying; subcarrier multiplexing; Monte Carlo simulations; QAM 16; QAM64; QPSK; bit rate 10 Gbit/s; bit rate 20 Gbit/s; bit rate 30 Gbit/s; multi level subcarrier modulation; optical orthogonal frequency division multiplexing; optical-OFDM systems; sensitivties; Bit rate; OFDM modulation; Optical filters; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Quadrature phase shift keying; Signal to noise ratio; Stimulated emission;
Conference_Titel :
Optical Fiber communication/National Fiber Optic Engineers Conference, 2008. OFC/NFOEC 2008. Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-55752-856-8
DOI :
10.1109/OFC.2008.4528413
