Title :
Employing feed-forward downstream cancellation in optical network units for 2.5G/1.25G RSOA-based and 10G/10G REAM-based Passive Optical Networks for efficient wavelength reuse
Author :
Schrenk, Bernhard ; Lazaro, Jose A. ; Prat, Josep
Author_Institution :
Univ. Politec. de Catalunya, Barcelona, Spain
fDate :
June 28 2009-July 2 2009
Abstract :
Optical Network Units for Next-Generation Passive Optical Networks with wavelength reuse are investigated for asymmetrical 2.5 G/1.25 G and symmetrical 10 G/10 G down- and upstream data rates. The transmission performance was enhanced by a feed-forward cancellation circuitry adapted to an RSOA and an REAM used as remodulator. The range of downstream extinction ratios for error-free upstream transmission at BER of 10-10 was extended from 3 to 4 dB for the RSOA-based ONU and from 1.5 to 3 dB for the REAM-based ONU.
Keywords :
electro-optical modulation; electroabsorption; error statistics; feedforward; optical fibre networks; optical transmitters; semiconductor optical amplifiers; BER; REAM- based passive optical network; REAM-based ONU; RSOA-based ONU; RSOA-based passive optical network; downstream data rate; downstream extinction ratio; error-free upstream transmission performance; feed-forward downstream cancellation circuitry; next-generation passive optical networks; optical network unit; reflective electro absorption modulator; reflective semiconductor optical amplifier; wavelength reuse; Erbium; Feedforward systems; Optical filters; Optical interferometry; Optical network units; Optical receivers; Optical saturation; Passive optical networks; Semiconductor optical amplifiers; Wavelength division multiplexing; REAM; RSOA; WDM; downstream cancellation; passive optical networks; wavelength reuse;
Conference_Titel :
Transparent Optical Networks, 2009. ICTON '09. 11th International Conference on
Conference_Location :
Azores
Print_ISBN :
978-1-4244-4825-8
Electronic_ISBN :
978-1-4244-4827-2
DOI :
10.1109/ICTON.2009.5185331
