Wide dynamic range reception of TDM-based DCO-OFDM signals using optical domain power equalization and symmetrical clipping techniques

Ryo Koma, Masamichi Fujiwara, Shunji Kimura, Naoto Yoshimoto

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposes the burst-mode reception of dc-biased optical orthogonal frequency division multiplexing (DCO-OFDM) signals by introducing symmetrically clipped OFDM and an optical domain power equalizer (OD-PE) consisting of an optical amplifier with feed forward control. Both the clipping ratio optimization in suppressing the peak-to-average ratio of the OFDM signals and the output power equalization function of the OD-PE regardless of input power level reduce the impact of quantization errors in analogue-to-digital conversion (ADC) needed for digital signal processing (DSP)-based OFDM signal demodulation, which greatly improves the receiver's dynamic range. Successful reception of 10-Gb/s time division multiplexing-based DCO-OFDM signals with wide dynamic range of 13.5 dB is experimentally demonstrated even for a 5-bit resolution ADC, which is typically used for real-time DSPs. Numerical calculations also support the measured results.

Original languageEnglish
Article number6994245
Pages (from-to)1623-1629
Number of pages7
JournalJournal of Lightwave Technology
Volume33
Issue number8
DOIs
Publication statusPublished - Apr 15 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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