J. Vojtech, M. Karasek, and J. Radil (Czech Republic)
Optical fibre communications, chromatic dispersion compensation
In this contribution different techniques and scenarios of all-optical chromatic dispersion (CD) are compared experimentally at transmission speed of 10 Gbit/s. CD was compensated both conventionally in dispersion compensating fibres (DCF) and unconventionally using channelized or broadband fibre Bragg gratings (FBG) or Gires-Tournois etalons (GTE). In our experimental setup eight 10 Gigabit Ethernet (10 GE) channels were transmitted over 225 km of standard single mode fibre (SSMF) with no inline amplification and CD compensation. Signals from 10 GE transceivers were combined in a multiplexer and optionally CD was pre compensated. Furthermore the composite signal was amplified in a high-power C-band erbium-doped fibre amplifier (EDFA) and launched in the 225 km of SSMF fibre. At the receiver side, signals were first pre-amplified in a low noise EDFA, CD was compensated by one of before mentioned compensating techniques, in case of utilizing DCF additionally amplified in another EDFA, and finally de-multiplexed.
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