title: Demonstration of channel-spacing-tunable demultiplexing of optical orthogonal-frequency-division-multiplexed subcarriers utilizing reconfigurable all-optical discrete Fourier transform.
abstract: We experimentally demonstrate a tunable and reconfigurable optical discrete Fourier transform (DFT) to demultiplex orthogonal-frequency-division-multiplexed subcarriers with 2/3/4 subcarriers at 20/40 GHz frequency spacing. An average power penalty of ~5 dB (~3.5) at bit error ratio of 10(-9) is achieved for 4×20 Gbit/s (4×10 Gbit/s) OFDM signal with 20 GHz frequency spacing.
authors.affiliation: Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA. chitgarh@usc.edu
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Chitgarha
authors.forename: Salman
authors.initials: S
authors.lastname: Khaleghi
authors.forename: Omer F
authors.initials: OF
authors.lastname: Yilmaz
authors.forename: Moshe
authors.initials: M
authors.lastname: Tur
authors.forename: Michael W
authors.initials: MW
authors.lastname: Haney
authors.forename: Carsten
authors.initials: C
authors.lastname: Langrock
authors.forename: Martin M
authors.initials: MM
authors.lastname: Fejer
authors.forename: Alan E
authors.initials: AE
authors.lastname: Willner