Abstract
This paper proposes a novel subcarrier pre-filtering method to reduce the peak-to-average power ratio (PAPR) in the coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. It can mitigate the fiber nonlinearity without damnifying the signal waveform or inducing any redundant information. The experiment successfully demonstrates a 277.6-Gb/s low-density-parity-check (LDPC) coded CO-OFDM system over 200-km fiber via a subcarrier pre-filtering technology. More than 4-dB improvement in PAPR is achieved compared with that of the conventional CO-OFDM, and the nonlinear threshold can be improved by 2.1 dB at the bit error rate (BER) of 5×10 -2.
Original language | English |
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Pages (from-to) | 5397-5400 |
Number of pages | 4 |
Journal | Optics Communications |
Volume | 285 |
Issue number | 24 |
DOIs | |
Publication status | Published - 1 Nov 2012 |
Externally published | Yes |
Keywords
- Coherent optical orthogonal frequency division multiplexing
- Peak-to-average-power ratio (PAPR)
- Pre-filtering