Journal
OPTICS LETTERS
Volume 38, Issue 22, Pages 4797-4800Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.004797
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Funding
- SFI PI grant [09/IN.1/I2653]
- HEA PRTLI 4 INSPIRE Program
- China Scholarship Council
- IRC
- Marie Curie Actions under FP7
- Oclaro Inc.
- EPSRC [COSINE EP/I012702/1]
- Pilot Photonics
- EPSRC [EP/I012702/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I012702/1] Funding Source: researchfish
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The authors report on the downlink performance of a 10 Gb/s long-reach and ultra-dense wavelength-division multiplexed passive optical network, based on a multicarrier transmitter realized by using an externally injected gain-switched distributed-feedback laser diode. Each of the comb channels, spaced by 10 GHz, is modulated with a 3 Gbaud dual polarization quadrature phase shift keying signal that included a 20% overhead for forward error correction. Frequency selectivity and enhanced receiver sensitivity is achieved by employing a digital coherent receiver to receive the signal. Experimental results achieved in a back-to-back and 100 km transmission scenarios show an excellent worst case receiver sensitivity of -44 dBm. (C) 2013 Optical Society of America
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