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Proceedings Paper

Filling in the missing link: monolithic optical isolators on silicon with high performance, broadband operation, and polarization diversity
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Paper Abstract

On-chip optical isolators constitute an essential building block for photonic integrated circuits. Monolithic magnetooptical isolators on silicon, while featuring unique benefits such as scalable integration and processing, fully passive operation, large dynamic range, and simple device architecture, had been limited by their far inferior performances compared to their bulk counterparts. Here we discuss our recent work combining garnet material development and isolator device design innovation, which leads to a monolithic optical isolator with an unprecedented low insertion loss of 3 dB and an isolation ratio up to 40 dB. To further overcome the bandwidth and polarization limitations, we demonstrated broadband optical isolators capable of operating for both TM and TE modes. These results open up exciting opportunities for scalable integration of nonreciprocal optical devices with chip-scale photonic circuits.

Paper Details

Date Published: 26 February 2020
PDF: 9 pages
Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 112891L (26 February 2020);
Show Author Affiliations
Juejun Hu, Massachusetts Institute of Technology (United States)
Yan Zhang, Univ. of Electronic Science and Technology of China (China)
Qingyang Du, Massachusetts Institute of Technology (United States)
Chuangtang Wang, Univ. of Electronic Science and Technology of China (China)
Takian Fakhrul, Massachusetts Institute of Technology (United States)
Yifei Zhang, Massachusetts Institute of Technology (United States)
Shuyuan Liu, Univ. of Electronic Science and Technology of China (China)
Longjiang Deng, Univ. of Electronic Science and Technology of China (China)
Claudia Goncalves, The College of Optics and Photonics, Univ. of Central Florida (United States)
Cesar Blanco, The College of Optics and Photonics, Univ. of Central Florida (United States)
Kathleen Richardson, The College of Optics and Photonics, Univ. of Central Florida (United States)
Duanni Huang, Univ. of California, Santa Barbara (United States)
Paolo Pintus, Univ. of California, Santa Barbara (United States)
John Bowers, Univ. of California, Santa Barbara (United States)
Caroline A. Ross, Massachusetts Institute of Technology (United States)
Lei Bi, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11289:
Photonic and Phononic Properties of Engineered Nanostructures X
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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