Hybrid OFDM experimentation based on arrayed waveguide grating for all‐optical FFT implementation in PON architecture. Issue 22 (14th October 2015)

• Record Type: Journal Article
• Authors: Morosi, J.; Boffi, P.; Martelli, P.; Parolari, P.; Cincotti, G.; Shimizu, S.; Wada, N.
• Is Part Of: Electronics letters. Volume 51:Issue 22(2015)
• Page Start: 1802
• Page End: 1804
• Publication Date: 2015-10-14
• Subjects: passive optical networks -- OFDM modulation -- arrayed waveguide gratings -- fast Fourier transforms -- optical transmitters -- demultiplexing -- amplitude shift keying; passive optical network architecture -- PON architecture -- hybrid OFDM experimentation -- arrayed waveguide grating -- all‐optical FFT implementation -- optical frequency division multiplexing -- electrical generation -- optical transmitter -- all‐optical demultiplexing -- OFDM subcarriers -- 3‐subcarrier OFDM signal -- fast Fourier transform functionality -- on‐off keyed data -- optical network users -- feeder link -- frequency 12.5 GHz -- bit rate 12.5 Gbit/s -- bit rate 150 Gbit/s -- distance 40 km; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.2534
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A hybrid optical frequency division multiplexing (OFDM) system based on the electrical generation of the OFDM signal at the transmitter and on the all‐optical demultiplexing of the OFDM subcarriers is experimentally demonstrated by exploiting a purposely designed arrayed waveguide grating (AWG) with 12.5 GHz frequency spacing. The AWG passively and all‐optically processes a 3‐subcarrier OFDM signal with fast Fourier transform functionalities, demultiplexing it into three 12.5 Gbit/s on–off keyed data at the corresponding output ports, which are then connected to the optical network users. Transmission over a 40 km feeder link is experimentally demonstrated. Taking into account the AWG's available 16 ports and four 3‐subcarrier OFDM signal generators modulating independent wavelength carriers, a passive optical network (PON) architecture can be realised serving 12 optical network units with 150 Gbit/s total aggregate downstream capacity.