ICTON 2013 Tu.A4.6 978-1-4799-0683-3/13/$31.00 ©2013 IEEE 1 l electrical Legacy Coaxial PC MZM Multi-OFDM generator CW SSMF BI-SMF Service Provider Central Office DVB-T extractor and DC injector Multi Gigabit Radio Link 75-110 GHz L l optical TV plug ONT Wireless Receiver GbE data Figure 1. Converged optical, millimetre-wave wireless and cable OFDM-PON FTTH network concept schematic. Fully Converged Optical, Millimetre-Wave Wireless and Cable Provision in OFDM-PON FTTH Networks Roberto Llorente, Member, IEEE, Maria Morant, Member, IEEE, Marta Beltrán, and Eloy Pellicer, Student Member, IEEE Valencia Nanophotonics Technology Centre, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain, Tel: (34)96 387 9736, Fax: (34)96 387 7827, rllorent@ntc.upv.es ABSTRACT This paper reports latest research results demonstrating experimentally the feasibility of the converged provision of optical access, cable and millimetre-wave wireless services fibre-to-the-home (FTTH) networks with a unique technological solution. Transmitting orthogonal frequency division multiplexing (OFDM) modulated signals in FTTH networks permits multi-Gb/s seamless service provision with a unique optical network infrastructure. The use of radio-over-fibre transmission of OFDM signals eliminates the need for re modulation of data format conversion when converged services are distributed. The experimental results demonstrate multi-Gb/s optical access in an OFDM passive optical network (PON) with successful integration of the optical access network and in-building optical and electrical distribution employing bend-insensitive single-mode fibre (BI-SMF) and conventional coaxial cabling (75 Ω) respectively. An ad-hoc OFDM signal providing Gigabit-Ethernet (GbE) connectivity can be distributed in FTTH in coexistence with other standard OFDM wireless services such as terrestrial digital video broadcasting (DVB-T). In this case, the DVB-T signal can be extracted from the FTTH access optical network and distributed through the legacy coaxial network available in the building, if present. As an additional feature, the proposed approach permits power-over-coaxial distribution. This allows commercial-available low-power DVB-T receivers and USB 3.0 devices to be charged directly from the coaxial cabling outlets. The performance of the DVB-T signals transmitted in coexistence has been evaluated in a FTTH PON demonstrating proper operation. The experimental results confirm negligible degradation on the received signal and successful DVB-T video broadcasting over FTTH networks in radio-over-fibre supporting joint optical in-home distribution and electrical coaxial cabling distribution. Finally, OFDM signals transmitted in the optical access are demonstrated to be adequate for photonic generation of electrical 19.1 Gb/s OFDM-modulated millimetre-wave wireless signals in the 75 − 110 GHz band. Wireless transmission of 16-QAM-OFDM signals is demonstrated with a BER performance within the forward error correction limits. Keywords: FTTH, PON, OFDM, radio-over-fibre, 75-110 GHz band, DVB-T, power-over-coaxial 1. INTRODUCTION In the last years FTTH network technology has experienced a sustained deployment in Europe based on the increasing user’s bitrate demand due to the introduction of new services as cloud computing, on-line gaming and high-definition video distribution [1]. A solution to optimise the capital expenditures (CAPEX) done in the original FTTH network deployments is to include wireless services in radio-over-fibre in an on-demand basis [2]. As it is depicted in Fig. 1, the wireless signals are generated at the central office and transmitted through the FTTH access network using radio-over-fibre (RoF) techniques. At customer premises, the optical network termination (ONT) can directly radiate the wireless signal. As the signals are transmitted in their native format and in their final frequency, the subscriber can use full-standard low-cost equipment because no format conversions or transmodulation are required [3]. This transparent solution avoids overall network upgrades when a new service appears in the market. In addition, wireless communication systems supporting very high capacity are interesting as an adequate match to the access network providing services up to 100 Gb/s [4]. Millimetre-wave wireless systems operating in the 60 GHz band can provide bandwidth enough to easily support multi-Gb/s communications. Radio-over-fibre technology combined with millimetre-wave wireless systems is seen as a fast deployable and cost-effective solution for providing seamless integrated optical-wireless access at bitrates >10 Gb/s [5]. In particular, wireless transmission in the 75 – 110 GHz band have been demonstrated to deliver bitrates higher than 40 Gb/s [6]. In this paper, we propose a unique This work has been partly funded by the European Commission through FP7 ICT-4-249142 FIVER project. Support from Generalitat Valenciana ACOMP/2013/130 GOLIAT and Spain National Plan TEC2009-14250 ULTRADEF and TEC2012-38558-C02-01 MODAL projects is also acknowledged