Title :
40-Gb/s Optical Packet Buffer Using Conversion/Dispersion-Based Delays
Author :
Yilmaz, Omer Faruk ; Nuccio, Scott R. ; Wu, Xiaoxia ; Willner, Alan E.
Author_Institution :
Ming Hsieh Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We experimentally demonstrate a continuously tunable, all-optical packet buffer based on conversion dispersion delays. 40-Gb/s asynchronous transfer mode (ATM) packets with return-to-zero on-off keying data are buffered up to ten-packet length (116 ns). The packet buffer performance is characterized for several delay values. Power penalties of 3, 2, and 0.5 dB for zero-packet, five-packet, and ten-packet delays are achieved, respectively, at a bit error rate (BER) of 10-9. Reconfiguration of the packet buffer is also investigated and reconfiguration times as fast as 25 ps are shown by using a high-speed optical switch to toggle between wavelength conversion pumps. The reconfiguration is also demonstrated for a 1 ns guard time between the packets. It is observed that reconfiguration with this method results in ~1.1 and ~2 dB extra power penalty at 10-9 BER for 1 and 25 ps guard times, respectively.
Keywords :
asynchronous transfer mode; error statistics; high-speed optical techniques; optical communication equipment; optical delay lines; optical dispersion; optical switches; packet switching; ATM; BER; asynchronous transfer mode packets; bit error rate; bit rate 40 Gbit/s; continuously tunable packet buffer; conversion dispersion delays; conversion-dispersion-based delays; five-packet delays; high-speed optical switch; optical packet buffer; power penalties; return-to-zero ON-OFF keying data; ten-packet delays; wavelength conversion pumps; zero-packet delays; Nonlinear optics; optical buffer; optical fiber communication; optical packet switching; optical signal processing;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2030900
