Title :
SOA blanking and signal pre-emphasis for wavelength agile 100Gb/s transmitters
Author :
Maher, R. ; Millar, D.S. ; Savory, S.J. ; Thomsen, B.C.
Author_Institution :
Opt. Networks Group, Univ. Coll. London, London, UK
Abstract :
SOA blanking is a pre-requisite in order to eliminate the transmission of spurious modes generated while switching a semiconductor tunable laser transmitter in a DWDM network. However, leakage currents associated with the large current swing applied to the integrated SOA can cause mode hops. We demonstrate that pre-emphasis of the switching signals applied to a commercially available DS-DBR laser is required to avoid cross channel interference and subsequent bit errors in a coherent DWDM network.
Keywords :
distributed Bragg reflector lasers; laser tuning; leakage currents; optical transmitters; semiconductor optical amplifiers; wavelength division multiplexing; DS-DBR laser; bit rate 100 Gbit/s; coherent DWDM network; crosschannel interference; current swing; leakage currents; semiconductor tunable laser transmitter; spurious modes; wavelength agile transmitters; Blanking; Laser modes; Laser tuning; Optical switches; Semiconductor optical amplifiers; Wavelength division multiplexing;
Conference_Titel :
Opto-Electronics and Communications Conference (OECC), 2012 17th
Conference_Location :
Busan
Print_ISBN :
978-1-4673-0976-9
Electronic_ISBN :
2166-8884
DOI :
10.1109/OECC.2012.6276689
