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http://dx.doi.org/10.3807/KJOP.2003.14.2.142

Investigation of a nonreciprocal phase shift properties of optical waveguide isolators with a magneto-optic layer  

Yang, Jeong-Su (Photonics Research Center, Korea Institute of Science and Technology)
Kim, Young-Il (Photonics Research Center, Korea Institute of Science and Technology)
Byun, Young-Tae (Photonics Research Center, Korea Institute of Science and Technology)
Woo, Deok-Ha (Photonics Research Center, Korea Institute of Science and Technology)
Lee, Seok (Photonics Research Center, Korea Institute of Science and Technology)
Kim, Sun-Ho (Photonics Research Center, Korea Institute of Science and Technology)
Yi, Jong-Chang (School of EE Hong-Ik University)
Publication Information
Korean Journal of Optics and Photonics / v.14, no.2, 2003 , pp. 142-145 More about this Journal
Abstract
The nonreciprocal phase shift characteristics of infinite slab optical waveguides with magneto-optic materials in the cladding layer was calculated at 1.55 ${\mu}{\textrm}{m}$ for optical isolators. The infinite slab waveguide structures considered in this paper were as follows. rho magneto-optic materials used as a cladding layer were Ce:YIG and LNB(LuNdBi)$_3$(FeAl)$_{5}$)$_{12}$,). Their specific Faraday rotations Θ$_{F}$ are 4500$^{\circ}$/cm, 500$^{\circ}$/cm at wavelength 1.55 ${\mu}{\textrm}{m}$ respectively. The guiding layer with multi-quantum well structure was used, and it consists of 1.3Q and InGaAs. In order to investigate the effect of evanescent field penetrating the cadding, layer, guiding mode characteristics were calculated for the cases when the substrate is InP and air. We calculated the minimum lengths of 90$^{\circ}$ nonreciprocal phase shifters and their optimum guiding layer thicknesses in various optical waveguide structures.res.s.
Keywords
optical isolator; magneto-optic layer; nonreciprocal phase shift; Faraday rotation;
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1 J. Fujita, M. Levy, R. M. Osgood, Jr, L. WIlkens and H. Dorsch, 'Waveguide optical isolator based on Mach-Zehnder interferometer,' Appl. Phys. Lett, vol. 76, no. 16, pp. 2158-2160, 2000   DOI   ScienceOn
2 S. Yamamoto and T. Makimoto, 'Thin-film optical waveguides and design of nonreciprocal devices for integrated optics,' J. Appl. Phys. vol. 45, no. 2, pp. 882-888, 1974   DOI   ScienceOn
3 T. Mizumoto, H. Chihara, N. Tokui, and Y Naito, 'VERIFICATION OF WAVEGUIDE-TYPE OPTICAL CIRCULATOR OPERATION,' Electron. Lett, vol. 26, no. 3, pp. 199-200, 1990   DOI   ScienceOn
4 A. F. Popkov, M. Fehndrich, M. Lohmeyer, and H. Dorsch, 'Nonreciprocal TE-mode phase shift by domain walls in magnetooptic rib waveguides,' Appl. Phys. Lett, vol. 72, no. 20, pp. 2508-2510, 1998   DOI   ScienceOn
5 N. Bahlmann, V. Chandrasekhara, A. Erdmann, R. Gerhardt, P. Hertel, R. Lehmann, D. Salz, F. Schroteler, M. Wallenhorst, and H. Dotsch, 'Improved Design of Magneto- opticRib Waveguides for Optical Isolators,' J. Lightwave Technol, vol. 16, no. 5, pp. 818-823, 1998   DOI   ScienceOn
6 H. Yokoi and T. Mizumoto, 'Proposed configuration of integrated optical isolator employing wafer-direct bonding technique,' Electron. Lett, vol. 33, no. 21, pp. 1787-1788, 1997   DOI   ScienceOn
7 T. Shintaku, and T. Uno, 'Optical waveguide isolator based on nonreciprocal radiation,' J. Appl. Phys., vol. 76, no. 12, pp. 8155-8159, 1994   DOI   ScienceOn
8 T. Mizumoto, S. Mashimo, T. Ida, and Y Naito, 'In-plane magnetized rare earth iron garnet for a waveguide optical isolator employing nonreciprocal phase shift,' IEEE. Trans. Magn., vol. 29, no. 6, pp. 3417-3419,1993   DOI   ScienceOn