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 language | English |
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Article number | 6994245 |
Pages (from-to) | 1623-1629 |
Number of pages | 7 |
Journal | Journal of Lightwave Technology |
Volume | 33 |
Issue number | 8 |
DOIs | |
Publication status | Published - Apr 15 2015 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics