Title :
Optical mode conversion analysis in double magnetic layers by magnetostatic surface waves
Author :
Miyazaki, Y. ; Hasegawa, K.
Author_Institution :
Dept. of Inf. & Comput. Sci., Toyohashi Univ. of Technol., Japan
Abstract :
Optical transverse-electric-transverse-magnetic (TE-TM) mode conversion by magnetooptic effect induced by magnetostatic surface waves (MSSWs) is analyzed. A typical MSSW waveguide has a thick layer for the convenient excitation of MSSWs. However, the waveguide is not a single-mode waveguide but is multimode for the optical wavelength. Such a waveguide is not suitable for optical devices because the conversion efficiency decreases due to coupling between higher modes. A multilayer waveguide constructed with the double magnetic layers, in which only the optical fundamental mode propagates and which improves the characteristics of optical mode conversion is proposed. An efficiency of 100% is achieved over an interaction length of about 1.0 cm for the applied microwave power density of a few milliwatts per millimeter
Keywords :
magnetic multilayers; magnetic surface phenomena; magneto-optical devices; magneto-optical effects; magnetostatic wave devices; optical waveguides; 100 percent; MSSW waveguide; applied microwave power density; conversion efficiency; double magnetic layers; interaction length; magnetooptic effect; magnetostatic surface waves; mode conversion analysis; multilayer waveguide; optical TE-TM mode conversion; optical fundamental mode; optical mode conversion; Magnetic analysis; Magnetic multilayers; Magnetooptic effects; Magnetostatic waves; Microwave propagation; Optical coupling; Optical devices; Optical surface waves; Optical waveguides; Surface waves;
Conference_Titel :
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location :
Orlando, FL
DOI :
10.1109/ULTSYM.1991.234156
