Abstract
We demonstrate multihop optical code labeled packet switching with agile and
phase-preserved wavelength conversion. The wavelength converter consists of a
highly-nonlinear fiber (HNLF) and a multiwavelength distributed feedback laser-diode
(DFB-LD) array module. We obtained a switching time of less than 1 ns, and the
tolerance of the optical encoder for wavelength shift of the DFB-LD was 0.08 nm. The
relative phases of each chip pulse in eight-chip-long binary phase shift keying
(BPSK) optical code after the wavelength conversion by four-wave mixing (FWM) is
preserved. We simulate the performance of packet-loss probability with the
wavelength conversion in a limited wavelength range of the wavelength converter. The
numerical simulations show that the packet-loss probability degrades only 3.1% under
the link utilization of 0.4, in comparison to that with the wavelength conversion
having an unlimited wavelength range of conversion.
© 2005 Optical Society of America
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