Abstract
Data-format-independent all-optical transmitter and receiver modules for free-space optical communications in the region have been developed, essentially consisting of Ti-indiffused, periodically poled waveguides. Using these modules, conversion of C-band radiation to/from the mid-infrared (MIR) via difference-frequency generation was demonstrated. More than of MIR power could be generated with the transmitter unit; the internal low-power conversion efficiency was . A free-space MIR link was set up with a fiber-to-fiber loss; only are due to the parametric processes.
© 2009 Optical Society of America
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