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High-Capacity Wireless Signal Generation and Demodulation in 75- to 110-GHz Band Employing All-Optical OFDM

2011; Institute of Electrical and Electronics Engineers; Volume: 23; Issue: 12 Linguagem: Inglês

10.1109/lpt.2011.2139201

1941-0174

Darko Zibar, Rakesh Sambaraju, Antonio Caballero, J. Herrera, Urban Westergren, Achim Walber, Jesper Beevense Jensen, J. Martí, Idelfonso Tafur Monroy,

Optical Network Technologies

We present a radio-frequency (RF) and bit-rate scalable technique for multigigabit wireless signal generation based on all-optical orthogonal frequency-division multiplexing (OFDM) and photonic up-conversion. Coherent detection supported by digital signal processing is used for signal demodulation and data recovery. In order to demonstrate the RF frequency scalability and bit-rate transparency, the system is tested at 60 GHz and in the 75- to 110-GHz band at the baud rates of 5 and 10 Gbaud. In terms of the bit rate, the proposed system is experimentally tested up to 40 Gb/s for wireless signal generation and demodulation. The wireless transmission is not considered in this letter. Additionally, a novel digital carrier phase/frequency recovery structure is employed to enable robust phase and frequency tracking between the beating lasers.