Title :
Demonstration of baud-rate-variable and channel-spacing-tunable demultiplexing of 10-40-Gbaud OFDM Subcarriers using a multi-tap optical DFT
Author :
Chitgarha, Mohammad R. ; Khaleghi, Salman ; Yilmaz, Omer F. ; Yang, Jeng-Yuan ; Willner, Alan E.
Author_Institution :
Ming Hsieh Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We experimentally demonstrate a tunable and reconfigurable optical DFT to demodulate 10-40-Gbuad OFDM with 2/3/4 subcarriers at 20/40GHz frequency spacing. Average power penalty of ~7 dB at BER of 10-9 is achieved on the subchannels in the 4×20Gbit/s case, and ~3 dB penalty is observed by using 50% guard time 4×10Gbit/s at 20G frequency spacing.
Keywords :
OFDM modulation; channel spacing; demodulation; demultiplexing; discrete Fourier transforms; optical tuning; OFDM subcarrier; baud-rate variable demultiplexing; bit rate 10 Gbit/s; channel spacing tunable demultiplexing; demodulation; discrete Fourier transform; frequency spacing; multitap optical DFT; orthogonal frequency division multiplexing; reconfigurable optical DFT; Discrete Fourier transforms; OFDM; Optical fibers; Optical filters; Optical interferometry; Optical pumping;
Conference_Titel :
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2011 and the National Fiber Optic Engineers Conference
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4577-0213-6
