Experimental demonstration of a statistical OFDM-PON with multiband ONUs and elastic bandwidth allocation

The statistical orthogonal frequency division multiplexing passive optical network (OFDM-PON) concept with multiband optical network units (ONUs) is experimentally tested with two users and an optical line terminal at 2.5/5 Gb/s total effective capacity with binary phase-shift keying (BPSK)/quadratu...

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Detalles Bibliográficos
Autores: Cano Valadéz, Iván Nicolás, Escayola Elias, Francisco Javier, Schindler, Philipp C., Santos Blanco, M. Concepción|||0000-0002-5103-5356, Polo Querol, Víctor|||0000-0002-8939-9411, Leuthold, Juerg, Tomkos, Ioannis, Prat Gomà, Josep Joan|||0000-0002-9817-4695
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/78250
Acceso en línea:https://hdl.handle.net/2117/78250
https://dx.doi.org/10.1364/JOCN.7.000A73
Access Level:acceso abierto
Palabra clave:Passive optical networks
Orthogonal frequency division multiplexing
Wavelength division multiplexing
Elastic bandwidth allocation
Intensity-modulation direct detection
OFDMA-PON
PON
Statistical PON
NETWORKS
Multiplexatge per divisió de freqüència
Xarxes òptiques passives
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
Descripción
Sumario:The statistical orthogonal frequency division multiplexing passive optical network (OFDM-PON) concept with multiband optical network units (ONUs) is experimentally tested with two users and an optical line terminal at 2.5/5 Gb/s total effective capacity with binary phase-shift keying (BPSK)/quadrature phase-shift keying (QPSK) modulation. Both downstream and uplink were measured based on intensity modulation and direct detection. The ONUs consisted of local nonpreselected wavelength distributed feedback laser sources centrally controlled to reduce overlapping probability. In addition, a radio-frequency mixing stage in the ONUs up/downconverts the user data to/from the OFDM signal, reducing the computational effort. Compared with ONUs processing the whole signal, the multiband approach presents comparable results with almost symmetrical power budgets of around 25 and 20 dB with BPSK and QPSK, respectively, which could increase up to 4.5 dB by allocating a spectral guard interval between the optical carrier and the OFDM data. Furthermore, elastic bandwidth allocation is explored, which is shown to compensate for up to 18 dB differential link loss.

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