End users and network operators demand data transmission at higher and higher bit rates in order to transmit next generation Ethernet and optical transport network (OTN) signals. This puts strong requirements on the optical transceivers, not only for generating and receiving signals with very high bit rates, but ensuring sufficient tolerance to impairments such as cross-talk, loss, dispersion and non-linear effects.
These impairments, coming from both the transmission fibre and network elements are already significant for state of the art 10 Gbit/s on-off keying (OOK) signals. As we move to higher bit rates such as 40 Gbit/s and 100 Gbit/s, additional impairments such as polarization mode dispersion (PMD), narrow-band optical filtering or non-linear phase noise become more important.
As a result of the increased impairments at high bit rates and long transmission distances, transceiver designs are today evolving from the simple OOK modulation into advanced structures involving state-of-the art electronic processing, advanced modulators and coherent receivers.
This LEOS summer topical will focus on the advanced technologies for next generation transceivers and linecards, which will conquer new frontiers in high speed optical communication systems. We believe that the key technologies for the next generation transceiver technologies include, but are not limited to:
- Advanced modulation techniques
- Pre-distortion techniques
- Electronic or optical equalisation
- Enhanced forward error correction techniques.
Original contributions covering technologies for next generation transceiver, which can be placed into transponder or line cards, are encouraged. We welcome work based on numerical simulations, experimental investigations and field demonstrations.
