Title :
Millimeter-wave signal generation device using optical difference frequency generation in LiTaO3 crystal suspended to rectangular waveguide
Author :
Takashima, Youichi ; Maejima, Yuto ; Murata, Hidekazu ; Okamura, Yasuyuki ; Kanno, Atsushi ; Kawanishi, Tetsuyas
Author_Institution :
Grad. Sch. of Eng. Sci., Osaka Univ., Toyonaka, Japan
Abstract :
A new millimeter-wave (MMW) signal generation device using a rectangular waveguide and second order nonlinear optical effect is proposed. Using a T-shaped rectangular waveguide with a suspended LiTaO3 crystal, adiabatic MMW signal injection into the waveguide is obtainable through optical difference frequency generation in the crystal. This device is easy for coupling to standard rectangular waveguide circuits compared with the proto-type devices where a nonlinear crystal is completely embedded into a rectangular waveguide. Analysis, design and preliminary experimental results are reported.
Keywords :
lithium compounds; millimetre waves; optical couplers; optical design techniques; optical frequency conversion; optical waveguides; rectangular waveguides; tantalum compounds; LiTaO3; T-shaped rectangular waveguide; adiabatic MMW signal injection; millimeter-wave signal generation device; optical coupling; optical design; optical difference frequency generation; second order nonlinear optical effect; suspended lithium tantalate crystal; Nonlinear optics; Optical device fabrication; Optical fibers; Optical polarization; Rectangular waveguides; Difference frequency generation; Nonlinear optical effect; Quasi-phase matching; Rectangular waveguide; Suspended waveguide;
Conference_Titel :
Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP), 2014 International Topical Meeting on
Conference_Location :
Sapporo
DOI :
10.1109/MWP.2014.6994516
