Title :
Demonstration of 40-Gb/s WDM-PON System Using SOA-REAM and Equalization
Author :
Guo, Qi ; Tran, An Vu
Author_Institution :
Victoria Res. Lab., Univ. of Melbourne, Parkville, VIC, Australia
fDate :
6/1/2012 12:00:00 AM
Abstract :
The wavelength-division-multiplexed passive optical network (WDM-PON) has been widely considered as the ultimate solution for future bandwidth-hungry access networks. However, in WDM-PON, the necessity of colorless operation and low cost constrains the choice of upstream transmitter and thus limits the achievable data rate. The integrated semiconductor optical amplifier-reflective electro-absorption modulator (SOA-REAM) is a promising candidate for uplink transmitter, because of its wide modulation bandwidth and low chirp. In this letter, a novel equalization technique based on noise predictive maximum likelihood (NPML) and partial response (PR) signaling is proposed to enable SOA-REAM-based 40-Gb/s WDM-PON. We experimentally demonstrate a 40-Gb/s error-free transmission over 20-km, using a 20-GHz SOA-REAM. Moreover, the performance of the proposed PR-NPML equalizer is compared with that of other common equalizers in both the transmission and the reflection studies.
Keywords :
chirp modulation; electroabsorption; maximum likelihood estimation; optical links; optical transmitters; passive optical networks; semiconductor optical amplifiers; wavelength division multiplexing; PR-NPML equalizer; SOA-REAM; WDM-PON system; bandwidth-hungry access networks; bit rate 40 Gbit/s; colorless operation; data rate; error-free transmission; frequency 20 GHz; integrated semiconductor optical amplifier-reflective electro-absorption modulator; modulation bandwidth; noise predictive maximum likelihood-based equalization technique; partial response signaling; uplink transmitter; upstream transmitter; wavelength-division-multiplexed passive optical network; Bandwidth; Bit error rate; Decision feedback equalizers; Maximum likelihood estimation; Passive optical networks; Wavelength division multiplexing; Electro-absorption modulator (EAM); noise prediction; partial response; passive optical network (PON);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2190051
