An ultra-dense optical comb based DWDM-OFDM-PON system
2014 (English)In: Progress in Electromagnetics Research Symposium, 2014, 699-702 p.Conference paper (Refereed)
We proposed and demonstrated an ultra-dense optical comb based DWDM-OFDM-PON scheme. At the optical line terminal (OLT), a cost-effective optical frequency comb generator (OFCG) is proposed and achieved as the multi-wavelength optical source. The OFCG is capable to provide multiple channels with reconfigurable wavelength spacing for ultra-dense WDM-PON based access network. In our scheme, OFDM signal with multi-level modulation will be encoded into the OFCG lines for the downstream transmission to enhance the spectral efficiency while the OFDM signal will be remodulated by OOK data for the upstream transmission due to its ease of implementation in optical network unit (ONU) side. In experiments, we demonstrated that 10 optical lines with 25 GHz channel spacing are generated and they were modulated by 2.5-GB/s QPSK-OFDM for the downlink signal transmission. We also demonstrated that the multiple wavelengths from the OFCG.
Place, publisher, year, edition, pages
2014. 699-702 p.
Dense wavelength division multiplexing, Optical fiber communication, Passive optical networks, Quadrature phase shift keying, Channel spacings, Multiple channels, Multiple wavelengths, Optical frequency comb generators, Optical line terminals, Optical network units, Spectral efficiencies, Wavelength spacing, Orthogonal frequency division multiplexing
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-168888ScopusID: 2-s2.0-84911211447ISBN: 9781934142288OAI: oai:DiVA.org:kth-168888DiVA: diva2:819150
Progress in Electromagnetics Research Symposium, PIERS 2014, 25 August 2014 through 28 August 2014