There has been growing interest in coherent optical orthogonal frequency-division multiplexing (CO-OFDM). We aim to present the case that the time for CO-OFDM has come, in terms of the demand from today's ever-advancing optical networks and the availability of its underlying technologies. We first lay out the signal processing aspect for CO-OFDM and then show a 2×2 multiple-input-multiple-output (MIMO) OFDM representation for the single-mode fiber optical channel. Through numerical simulation and experimental demonstration, we further present and discuss various MIMO-OFDM systems focusing on their polarization-mode dispersion resilience. Among those systems, the 2×1 MIMO-OFDM configuration incorporating polarization-time coding shows promise for optical access networks and broadcast networks. Finally, another class of the frequency-domain equalization techniques, namely, incoherent or coherent optical single-carrier frequency-domain equalization (CO-SCFDE) is discussed and experimentally demonstrated.

© 2008 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Calculation of optical phase jitter in dispersion-managed systems by use of the moment method (JOSAB)
• Reduction of Gordon-Mollenauer phase noise in dispersion-managed systems using in-line spectral inversion (JOSAB)
• Optical performance monitoring in coherent optical OFDM systems (OE)
• Theoretical and experimental study on PMD-supported transmission using polarization diversity in coherent optical OFDM systems (OE)
• Coherent detection in optical fiber systems (OE)

Related Conference Papers

• Integrated Optical Phase-Locked Loop
• Integrated Optical Phase-Locked Loop
• 32Tb/s (320x114Gb/s) PDM-RZ-8QAM Transmission over 580km of SMF-28 Ultra-Low-Loss Fiber
• 32Tb/s (320x114Gb/s) PDM-RZ-8QAM Transmission over 580km of SMF-28 Ultra-Low-Loss Fiber
• 13.5-Tb/s (135 x 111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 6,248 km Using SNR Maximized Second-Order DRA in the Extended L-Band
• 13.5-Tb/s (135 x 111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 6,248 km Using SNR Maximized Second-Order DRA in the Extended L-Band
• 72x100Gb/s Transmission over Transoceanic Distance, Using Large Effective Area Fiber, Hybrid Raman-Erbium Amplification and Coherent Detection
• 72x100Gb/s Transmission over Transoceanic Distance, Using Large Effective Area Fiber, Hybrid Raman-Erbium Amplification and Coherent Detection
• 1-Tb/s per Channel Coherent Optical OFDM Transmission with Subwavelength Bandwidth Access
• 1-Tb/s per Channel Coherent Optical OFDM Transmission with Subwavelength Bandwidth Access