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Integrated QPM sum-frequency generation interferometer device for ultrafast optical switching

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2 Author(s)
Suhara, T. ; Dept. of Electron., Osaka Univ., Japan ; Ishizuki, H.

An all-optical switching device consisting of a LiNbO3 waveguide Mach-Zehnder interferometer with a quasi-phase-matched (QPM) sum-frequency generation (QPM-SFG) section, and a thermooptic phase shifter in the arms was designed and fabricated. Picosecond gate switching of signal wave by control pulses both in 1.5-μm wavelength band is demonstrated in a device having a QPM-SFG section of 5-mm length.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 11 )