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Optical demultiplexing of terabit packets using a nonlinear waveguide grating coupler

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Abstract

All-optical switching will be a critical technology for ultrahigh bit rate use (>100 Gbit/s), manipulating streams of optical pulses for wide-band signal processing and for optical computing. Recent experiments have demonstrated a variety of techniques for optical control of multigigabit streams.1,2 In addition, novel nonlinear waveguide grating structures, which act either as mode convertors or as switches by changing the index in the guide and hence the filter function for the device, have been demonstrated.3-5 In this paper we report on switching experiments using a novel waveguide grating coupler for demultiplexing of ultrashort data packets. Switching times of -2.4 ps are achieved with the device which allow selective demultiplexing of the encoded terabit data packets.

© 1992 Optical Society of America

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