Abstract
Phase diversity of coherent optical communication provides spectrally efficient higher-order modulation for optical communications. However, in-phase/quadrature (IQ) imbalance in coherent optical communication degrades transmission performance by introducing unwanted signal distortions. In a coherent optical orthogonal frequency division multiple access (OFDMA) passive optical network (PON), IQ imbalance-induced signal distortions degrade transmission performance by interferences of mirror subcarriers, inter-symbol interference (ISI), and inter-channel interference (ICI). We propose parallel-channel discrete multitone (DMT) transmission to mitigate transceiver IQ imbalance-induced signal distortions in coherent orthogonal frequency division multiplexing (OFDM) transmissions. We experimentally demonstrate the effectiveness of parallel-channel DMT transmission compared with that of OFDM transmission in the presence of IQ imbalance.
| Original language | English |
|---|---|
| Pages (from-to) | 43-49 |
| Number of pages | 7 |
| Journal | Optical Fiber Technology |
| Volume | 32 |
| DOIs | |
| Publication status | Published - 2016 Dec 1 |
Bibliographical note
Funding Information:This work was supported by the ICT R&D program of MSIP/IITP , Republic of Korea, [ B0101-16-0131 , Next-generation coherent optical access physical network].
Publisher Copyright:
© 2016 Elsevier Inc.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Control and Systems Engineering
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Electrical and Electronic Engineering