Colorless FDMA-PON with flexible bandwidth allocation and colorless, low-speed ONUs [invited]

P. C. Schindler, R. Schmogrow, M. Dreschmann, J. Meyer, Ioannis Tomkos, J. Prat, H-G. Krimmel, T. Pfeiffer, Pandelis Kourtessis, A. Ludwig, D. Karnick, D. Hillerkuss, J. Becker, C. Koos, W. Freude, J. Leuthold

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


We demonstrate a remotely seeded flexible passive optical network (PON) with multiple low-speed subscribers but only a single optical line terminal transceiver operating at a data rate of 31.25 Gbits/s. The scheme is based on a colorless frequency division multiplexing (FDM)-PON with centralized wavelength control. Multiplexing and demultiplexing in the optical network unit (ONU) is performed in the electronic domain and relies either on FDM with Nyquist sinc-pulse shaping or on orthogonal frequency division multiplexing (OFDM). This way the ONU can perform processing at low speed in the baseband. Further, the ONU is colorless by means of a remote seed for upstream transmission and a remote local oscillator for heterodyne reception, all of which helps in keeping maintenance and costs for an ONU potentially low and will simplify wavelength allocation in a future software defined network architecture. To extend the reach, semiconductor optical amplifiers are used for optical amplification in the downstream and upstream.
Original languageEnglish
Pages (from-to)A204 - A212
Number of pages9
JournalIEEE/OSA Journal of Optical Communications and Networking
Issue number10
Publication statusPublished - Oct 2013


  • Access network Digital signal processing Frequency division multiple access Nyquist Optical fiber networks Passive optical network Pulse-shaping Semiconductor optical amplifier


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