title: All-optical OFDM transmission of 7 x 5-Gb/s data over 84-km standard single-mode fiber without dispersion compensation and time gating using a photonic-integrated optical DFT device.
abstract: We implement dispersion-tolerant and time-gating-free all-optical OFDM transmission using a photonic-integrated discrete Fourier transform (DFT) device. We show that 35-Gb/s OFDM data having near-unity spectral efficiency can be transmitted all-optically with 1-dB dispersion margin of ~1000 ps/nm. The passive-optical DFT circuit is implemented using multi-mode interference (MMI) couplers on a high index-contrast silica integrated-optic platform. We also propose a photonic DFT circuit based on an NxN MMI device capable of simultaneous channelization of OFDM signals into N subcarriers.
authors.affiliation: Bell Laboratories, Alcatel-Lucent, 791 Holmdel-Keyport Road, Holmdel, New Jersey 07733, USA. inuk.kang@alcatel-lucent.com
authors.forename: I
authors.initials: I
authors.lastname: Kang
authors.forename: M
authors.initials: M
authors.lastname: Rasras
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: S
authors.initials: S
authors.lastname: Chandrasekhar
authors.forename: M
authors.initials: M
authors.lastname: Cappuzzo
authors.forename: L T
authors.initials: LT
authors.lastname: Gomez
authors.forename: Y F
authors.initials: YF
authors.lastname: Chen
authors.forename: L
authors.initials: L
authors.lastname: Buhl
authors.forename: S
authors.initials: S
authors.lastname: Cabot
authors.forename: J
authors.initials: J
authors.lastname: Jaques