As2S3/Sr(Ti0.7Co0.3)O3 and As2S3/Sr(Ti0.6Fe0.4)O3 strip-loaded waveguides for integrated magneto-optical isolator applications

Lei Bi; Hyun-Suk Kim; Juejun Hu; Lionel C. Kimerling; C. A. Ross

doi:10.1117/12.809392

9 February 2009 As₂S₃/Sr(Ti_0.7Co_0.3)O₃ and As₂S₃/Sr(Ti_0.6Fe_0.4)O₃ strip-loaded waveguides for integrated magneto-optical isolator applications

Lei Bi, Hyun-Suk Kim, Juejun Hu, Lionel C. Kimerling, C. A. Ross

Author Affiliations +

Proceedings Volume 7218, Integrated Optics: Devices, Materials, and Technologies XIII; 721803 (2009) https://doi.org/10.1117/12.809392
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

Sr(Ti_0.6Fe_0.4)O₃ (STF) and Sr(Ti_0.7Co_0.3)O₃ (STC) room-temperature ferromagnetic oxides were grown epitaxially on LaAlO3(001), (LaSr)(AlTa)O₃ (001) and Si (001) substrates. Both materials were demonstrated to be magneto-optically active, and more optically transparent at 1550nm wavelength compared with other non-garnet ferromagnetic materials. As₂S₃/STF and As₂S₃/STC strip-loaded waveguides were fabricated on epitaxial STF or STC films grown on LSAT (001) substrates using thermal evaporation and lift-off processing. The absorption of STF at 1550 nm was measured by ellipsometry and by optical transmission spectrum measurements of the As₂S₃/STF waveguides, which gave similar results. A novel design for a Non-Reciprocal Phase Shift (NRPS) strip-loaded waveguide using chalcogenide glass (ChG) as the guiding layer is proposed. The NRPS and figure of merit of these waveguides are simulated. The ChG strip-loaded waveguide structure shows advantages both in fabrication and device performance according to the simulation results. Our study suggests the possibility of magneto-optical magneto-optical isolators monolithically integrated on a silicon platform.

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Lei Bi, Hyun-Suk Kim, Juejun Hu, Lionel C. Kimerling, and C. A. Ross "As₂S₃/Sr(Ti_0.7Co_0.3)O₃ and As₂S₃/Sr(Ti_0.6Fe_0.4)O₃ strip-loaded waveguides for integrated magneto-optical isolator applications", Proc. SPIE 7218, Integrated Optics: Devices, Materials, and Technologies XIII, 721803 (9 February 2009); https://doi.org/10.1117/12.809392

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