Photonic circuit topologies for optical OFDM and nyquist WDM

Arthur J. Lowery, Leimeng Zhuang, Bill Corcoran, Chen Zhu, Yiwei Xie

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12 Citations (Scopus)


Photonic circuits are the key to advanced functionality in future optical systems, as they efficiently process terabit/s data streams. This paper reviews how photonic circuit topologies have evolved to support high-spectral efficiency modulation formats, including: All-Optical Optical Frequency Division Multiplexing (AO-OFDM), Discrete Fourier Transform Spread OFDM (DFT-S-OFDM), Nyquist Wavelength Division Multiplexing, (NWDM), Orthogonal Time Division Multiplexing (OrthTDM, OTDM), chirped-OFDM and quasi-Nyquist signals. The importance of the order of components such as modulators, delays and filters within these circuits is stressed, as simple changes to the circuit topology have significant impacts on the spectra of the signals, and the required bandwidths of the modulators.
Original languageEnglish
Article number7592917
Pages (from-to)781-791
Number of pages11
JournalJournal of Lightwave Technology
Issue number4
Publication statusPublished - 15 Feb 2017


  • Optical OFDM
  • Nyquist WDM
  • Coherent optical OFDM
  • Optical signal processing
  • All-optical
  • Optical fourier transform
  • Arrayed waveguide grating router
  • Cyclic prefix
  • Photonic integrated circuit

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