Open AccessAll-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
Author(s) -
Ilnam Kang,
Mahmoud Rasras,
X. Liu,
S. Chandrasekhar,
M. Cappuzzo,
L. Gomez,
Y. F. Chen,
L.L. Buhl,
S. Cabot,
J. Jaques
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.009111
Subject(s) - optics , dispersion (optics) , materials science , photonics , single mode optical fiber , transmission (telecommunications) , photonic integrated circuit , orthogonal frequency division multiplexing , refractive index , interference (communication) , optical fiber , optoelectronics , channel (broadcasting) , physics , computer science , telecommunications
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.