Optical OFDM Basics
نویسندگان
چکیده
We have witnessed a dramatic increase of interest in orthogonal frequency-division multiplexing (OFDM) from optical communication community in recent years. The number of publications on optical OFDM has grown dramatically since it was proposed as an attractive modulation format for long-haul transmission either in coherent detection [1] or in direct detection [2,3]. Over the last few years, net transmission data rates grew at a factor of 10 per year at the experimental level. To date, experimental demonstration of up to 1 Tb s 1 transmission in a single channel [4, 5] and 10.8 Tb s 1 transmission based on optical FFT have been accomplished [6], whereas the demonstration of real-time optical OFDM with digital signal processing (DSP) has surpassed 10 Gb s 1 [7]. These progresses may eventually lead to realization of commercial transmission products based on optical OFDM in the future, with the potential benefits of high spectral efficiency and flexible network design. This chapter intends to give a brief introduction on optical OFDM, from its fundamental mathematical concepts to the up-to-date experimental results. This is organized into seven sections, including this introduction as Sect. 2.1. Section 2.2 reviews the historical developments of OFDM and its application in
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تاریخ انتشار 2018