Journal
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING
Volume 8, Issue 2, Pages 112-117Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOCN.8.000112
Keywords
Digital coherent receiver; Gain-switched laser; Nyquist UDWDM system; Tunable optical frequency comb
Categories
Funding
- SFI through the Irish Photonic Integration Centre (IPIC) [12/RC/2276s 12, 14/TIDA/2405]
- CTVR [10/CE/I1853]
- Enterprise Ireland [CF/2013/3617]
- Irish Research Council
- European Union [619591]
- HEA PRTLI 4 INSPIRE Programs
- Science Foundation Ireland (SFI) [14/TIDA/2405, 12/RC/2276s] Funding Source: Science Foundation Ireland (SFI)
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We propose and experimentally demonstrate a long-reach Nyquist ultradense wavelength division multiplexed passive optical network using a tunable optical frequency comb source and a digital coherent receiver. Each of the six comb tones on a 12.5 GHz grid is modulated with a 12 Gbaud Nyquist polarization division multiplexed quadrature phase shift keyed signal which includes a 20% overhead for forward error correction. Unrepeated downlink transmission of 100 km is demonstrated at three different operating wavelengths across the C-band. A worst-case channel sensitivity of -35.3 dBm (59 photons/bit) is achieved at a bit error rate of 1.5 x 10(-2), yielding a system loss budget of 35.7 dB.
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