Abstract
As it is free from electrical parasitics, the use of the all-optical switch array is an attractive approach for achieving very high-speed signal processing for optical communication and interconnection beyond the Gbit/s range. However, two incident beams and one outgoing beam for each switch may require a complex geometry, thus the module assembly procedure remains a serious obstacle for its realization. The present work reports the design, test fabrication, and characterization of an optical platform dedicated to all-optical demultiplexing at 1.55 µm, using asymmetric Fabry-Perot saturable absorber switches as active devices, and off-axis binary Fresnel zone lenses as the focusing optics. Two different platform configurations were fabricated by a substrate stacking technique achieving spot sizes of 13 µm and 22.5 µm at the switch plane, with reasonable overlap between the pump and signal beams. The influence of wavelength variation, fabrication tolerance and throughput are discussed.
Published Version
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