Title :
A broadcast scheme with cross-gain modulation in WDM-PON
Author :
Hanlin Feng ; Fengqing Liu
Author_Institution :
Sch. of Opto-Electron. Eng., Nanjing Univ. of Posts & Telecommun. (NUPT), Nanjing, China
Abstract :
In this paper, the effect of SOA cross-gain modulation (XGM) is applied to eliminate the extinction ratio (ER) restrict of downstream signal in WDM-PON. A novel semi-passive optical distribution network (ODN) is designed, in which broadcast function is implemented in physical layer by adding a SOA to transfer broadcast signal from one channel to all channels. The scheme makes both high ER unicast and broadcast signal be transmitted in the downstream direction. Numerical results show that utilization of high ER Non Return to Zero (NRZ) signal improves BER performance of both downstream and upstream channels, when up and downstream data rates are 2.5Gbit/s.
Keywords :
error statistics; optical fibre networks; optical modulation; semiconductor optical amplifiers; wavelength division multiplexing; BER performance; ER broadcast signal; ER unicast signal; SOA cross-gain modulation; WDM-PON; bit rate 2.5 Gbit/s; broadcast scheme; downstream channels; extinction ratio elimination; nonreturn to zero signal; physical layer; semiconductor optical amplifier; semipassive optical distribution network; upstream channels; wavelength-division-multiplexing passive optical network; BROADCAST; HIGH ER; SOA; WDM-PON; XGM;
Conference_Titel :
Optical Communications and Networks (ICOCN 2010), 9th International Conference on
Conference_Location :
Nanjing
DOI :
10.1049/cp.2010.1175
