title: Real-time 93.8-Gb/s polarization-multiplexed OFDM transmitter with 1024-point IFFT.
abstract: We demonstrate a 93.8-Gb/s real-time optical OFDM transmitter with 1024-point IFFT using polarization-multiplexing and 4-QAM modulation. This is the highest IFFT size implemented for OFDM to our knowledge. The limited resources of FPGA make it challenging to place and route such a high size IFFT. The implementation penalty of the real time transmitter compared to the case where FPGAs are used as an arbitrary waveform generators increases up to 2 dB for BER of 7x10(-4). An optical back-back measurement showed required OSNR of 26.5 dB for a BER of 10(-3).
authors.affiliation: Institute of Communications Engineering, Technische Universität München, Arcisstrasse 21 D-80333, Munich, Germany. beril.inan@tum.de
authors.forename: Beril
authors.initials: B
authors.lastname: Inan
authors.forename: Susmita
authors.initials: S
authors.lastname: Adhikari
authors.forename: Ozgur
authors.initials: O
authors.lastname: Karakaya
authors.forename: Peter
authors.initials: P
authors.lastname: Kainzmaier
authors.forename: Micheal
authors.initials: M
authors.lastname: Mocker
authors.forename: Heinrich
authors.initials: H
authors.lastname: von Kirchbauer
authors.forename: Norbert
authors.initials: N
authors.lastname: Hanik
authors.forename: Sander L
authors.initials: SL
authors.lastname: Jansen