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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

Abstract
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.