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1 March 2016 Monolithic on-chip nonreciprocal photonics based on magneto-optical thin films
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Abstract
Monolithic integration of nonreciprocal optical devices on semiconductor substrates has been a long-sought goal of the photonics community. One promising route to achieve this goal is to deposit high quality magneto-optical (MO) oxide thin films directly on a semiconductor substrate. In this article, we will review our ongoing progress in material development and device engineering towards enabling a monolithically integrated, high-performance magneto-optical nonreciprocal photonics platform. In particular, we will discuss our recent work which has led to a new pulsed laser deposition (PLD) technique of Ce or Bi substituted yttrium iron garnet (YIG) thin films with reduced thermal budget, simplified growth protocols and improved magneto-optical characteristics. These materials were incorporated in monolithic resonator and interferometer based isolator devices to demonstrate on-chip optical isolation with improved device figure of merit. Challenges and opportunities for monolithic magneto-optical devices will be discussed in the context of our latest material and device performance metrics.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juejun Hu, Xue Yin Sun, Qingyang Du, Mehmet Onbasli, and Caroline A. Ross "Monolithic on-chip nonreciprocal photonics based on magneto-optical thin films", Proc. SPIE 9750, Integrated Optics: Devices, Materials, and Technologies XX, 97500W (1 March 2016); https://doi.org/10.1117/12.2209658
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