volume | PIER Journals

2007-11-07

Diffraction Efficiency Enhancement of Guided Optical Waves by Magnetostatic Forward Volume Waves in the Yttrium-Iron-Garnet Waveguide Coated with Perfect Mental Layers

Feng Wen,

Dr. Feng Wen

Key Lab of Broadband Optical Fiber Transmission and Communication Networks of the Ministry of Education

University of Electronic Science and Technology of China

China

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Bao-Jian Wu

Dr. Bao-Jian Wu

Key Lab of Broadband Optical Fiber Transmission and Communication Networks of the Ministry of Education

University of Electronic Science and Technology of China

China

Homepage

Progress In Electromagnetics Research B, Vol. 1, 209-218, 2008

doi:10.2528/PIERB07103003

Abstract

The diffraction efficiency (DE) of guided optical waves (GOWs) and the magneto-optic (MO) -3 dB bandwidth are key parameters in MO Bragg cells. To improve the diffraction performance, the MO Stokes interaction between magnetostatic forward volume waves (MSFVWs) and GOWs are studied by use of the coupledmode theory in metal clad yttrium-iron-garnet (YIG) waveguides. Our analysis shows that, by adjusting the spacing of the metal layer from the ferrite surface, (1) the DE can be further increased by 7.32 dB compared with that of the inclined magnetization, but the MO bandwidth will be dropped down to the low level in the optimizing waveguide configuration; (2) when the DE and the MO bandwidth should be considered synthetically, a DE improvement of 3.9 dB with a bandwidth about 560 MHz is achieved corresponding to the large gainbandwidth product. Thus, the YIG waveguide coated with perfect metal layers can be used to improve the performance of MO Bragg cells.

Citation

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Feng Wen, and Bao-Jian Wu, "Diffraction Efficiency Enhancement of Guided Optical Waves by Magnetostatic Forward Volume Waves in the Yttrium-Iron-Garnet Waveguide Coated with Perfect Mental Layers," Progress In Electromagnetics Research B, Vol. 1, 209-218, 2008.
doi:10.2528/PIERB07103003

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