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Flexible OTDM to WDM converter enabled by a programmable optical processor

Drummond, M. V. ; Teixeira, A. ; Monteiro, P. ; Nogueira, R.N.

Optics Express Vol. 20, Nº 2, pp. 1783 - 1789, January, 2012.

ISSN (print): 1094-4087
ISSN (online):

Journal Impact Factor: 3,488 (in 2014)

Digital Object Identifier: 10.1364/OE.20.001783

We propose an OTDM to WDM converter which enables
wavelength tunability, flexible OTDM tributary to WDM channel mapping and modulation format transparency. The converted signals are obtained by four-wave mixing (FWM) the input 160 Gb/s OTDM signal with a multiwavelength sampling pulse train (SPT). The generation of the multiwavelength SPT starts by multicasting an optical clock signal. The multicast
pulses are then individually delayed and reshaped by a programmable optical processor (POP), resulting in flexible generation of the SPT. Error-free performance was achieved in different OTDM tributary to WDM
channel mappings. In addition, intermediate rate conversion (2x80 Gb/s) was also achieved simply by reconfiguring the POP.