Conference paper
Advanced technologies for coherent access networks
Coherent technologies are exhibiting the flexibility and performance required to address the next generation of optical access networks, where the residential, business and mobile backhaul will converge. The use of these technologies for access networks is approached from several angles, including affordable photonic integrated circuits (PICs) and cost-effective transceivers are met.
In this work, we will present different technologies we have been working on lately, as a low cost 2x3 coherent PIC receiver, which allows an increment of the overall capacity of the network. We will also show cost-effective coherent transceiver components, e.g. directly-phase modulated VCSELs transmitters and/or quasi-coherent receivers, which can play an important role in reducing cost while still fulfilling the future capacity.
New advanced modulation formats may also contribute to this goal, by allowing the introduction of new concepts as pay-as-you-grow upgrades through the employment of non-orthogonal multiple access (NOMA) technique combined with e.g. carrierless amplitude phase modulation (CAP). Finally, we will also study the use of intensity modulated spectrally efficient formats as OFDM, FBMC, UFMC and GFDM in an optical access network architecture.
Language: | English |
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Publisher: | IEEE |
Year: | 2019 |
Pages: | 1-5 |
Proceedings: | 2019 21st International Conference on Transparent Optical Networks (ICTON) |
ISBN: | 1728127793 , 1728127807 , 9781728127798 and 9781728127804 |
ISSN: | 21612064 and 21612056 |
Types: | Conference paper |
DOI: | 10.1109/icton.2019.8840371 |
ORCIDs: | Silva Valdecasa, Guillermo |
Integrated optics Optical receivers Optical transmitters Phase modulation Sensitivity Vertical cavity surface emitting lasers advanced modulation formats carrierless amplitude phase modulation coherent coherent PIC receiver coherent access networks intensity modulated spectrally efficient formats multi-access systems multiuser channels nonorthogonal multiple access technique optical access networks optical fibre subscriber loops quasi-coherent