论文信息 - Novel self-synchronization scheme for high-speed packet TDM networks

Novel self-synchronization scheme for high-speed packet TDM networks

We demonstrate a novel self-synchronization scheme for high-speed packet time-division-multiplexed (TDM) networks using a fast saturated, but slowly recovered gain (or loss) combined with intensity discrimination. The marker pulse used in this self-synchronization scheme is the same as other pulses in the packets. In particular, we use a semiconductor optical amplifier (SOA) as the fast saturated but slowly-recovered gain element, and an unbalanced nonlinear optical loop mirror or a dispersion-shifted fiber/optical filter combination as an intensity discriminator. The contrast ratio of the first pulse to the remaining pulses of a 100 Gb/s packet, "10111000" is >3 dB at the output of the SOA and >20 dB at the outputs of both intensity discriminators.

[1] M.N. Islam,et al. All-optical 40 GHz demultiplexing in a NOLM with sub-pJ switching energy , 1997, CLEO '97., Summaries of Papers Presented at the Conference on Lasers and Electro-Optics.

[2] I. Glesk,et al. Unbalanced TOAD for optical data and clock separation in self-clocked transparent OTDM networks , 1997, IEEE Photonics Technology Letters.

[3] Paul R. Prucnal,et al. All-optical address recognition and self-routing in a 250 Gbit/s packet-switched network , 1994 .

[4] Y. Shimazu,et al. Ultrafast photonic ATM switch with optical output buffers , 1992 .

[5] N. Olsson,et al. Self-phase modulation and spectral broadening of optical pulses in semiconductor laser amplifiers , 1989 .

[6] K. Hill,et al. Experimental demonstration of a low-latency fiber soliton logic gate , 1996 .

[7] Paul Gunning,et al. Self-routing of 100 Gbit/s packets using 6 bit 'keyword' address recognition , 1995 .

[8] Ali M. Darwish,et al. Subpicosecond gain and index nonlinearities in InGaAsP diode lasers , 1994 .