Palushani, Evarist2; Mulvad, Hans Christian Hansen1; Kong, Deming2; Guan, Pengyu1; Galili, Michael1; Oxenløwe, Leif Katsuo1
1 Department of Photonics Engineering, Technical University of Denmark2 High-Speed Optical Communication, Department of Photonics Engineering, Technical University of Denmark
We propose a simple OFDM receiver allowing for the use of standard WDM receivers to receive spectrally advanced OFDM signals. We propose to spectrally magnify the optical-OFDM super-channels using a spectral telescope consisting of two time-lenses, which enables reduced inter-carrier-interference in subcarrier detection by simple band-pass filtering. A demonstration on an emulated 100 Gbit/s DPSK optical-OFDM channel shows improved sensitivities after 4-times spectral magnification.
Optics Express, 2014, Vol 22, Issue 1, p. 136-144
Interference suppression; Lenses; Optical fiber communication; Orthogonal frequency division multiplexing