O2.4 - Coupling Efficiency of Metamaterial Magnetooptical Integrated Isolator
- Event
- SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg - Band
- Proceedings OPTO 2009 & IRS² 2009
- Chapter
- OPTO 2 - Optical Fiber Sensors
- Author(s)
- H. El-Khozondar - Islamic University of Gaza, Gaza, Palestina and Technische Universität München, München, Germany, R. El-Khozondar - Al-Aqsa University, Gaza, Palestina and RWTH Aachen University, Aachen, Germany, M. Shabat - Islamic University of Gaza, Gaza, Palestina, A. Kock - Technische Universität München, München, Germany
- Pages
- 65 - 70
- DOI
- 10.5162/opto09/o2.4
- ISBN
- 978-3-9810993-6-2
- Price
- free
Abstract
In the present study, we present a new type of an integrated magnetooptical isolator. We considered the film and the cover regions are magnetooptic while the substrate is made of metamaterial. The proposed isolator uses only the TM mode propagating perpendicular to the in-plane magnetization of a planer magnetooptical waveguide. The cut-off thickness of the integrated isolator varies with the propagation direction. The chosen thickness of the proposed isolator yields a big difference between the coupling coefficient for forward and backward propagation. Typically, planner waveguide isolators have three layers: the cover, film, and substrate. In the structure treated in Refs. 18 and 19, the film is the only magnetooptic layer. It would be interesting to see if the noreciprocity is assisted or hindered if the cover region is also magnetooptic. In section II, we inspect waveguide isolator where the cover and the film regions are magnetooptic as well as anisotropic and derive an exact dispersion relation for TM modes. Next, section III is focused on numerical calculations followed by discussion of the results in section IV.