Optical Isolator for TE Polarized Light Realized by Adhesive Bonding of Ce:YIG on Silicon-on-Insulator Waveguide Circuits

被引：59

作者：

Ghosh, S. ^{[1
,2
]}

Keyvaninia, S. ^{[1
,2
]}

Shirato, Y. ^{[3
]}

Mizumoto, T. ^{[3
]}

Roelkens, G. ^{[1
,2
]}

Baets, R. ^{[1
,2
]}

机构：

[1] Ghent Univ IMEC, Dept Informat Technol, Photon Res Grp, B-9000 Ghent, Belgium

[2] Univ Ghent, Ctr Nano & Biophoton NB Photon, B-9000 Ghent, Belgium

[3] Tokyo Inst Technol, Dept Elect & Elect Engn, Tokyo 1528552, Japan

来源：

IEEE PHOTONICS JOURNAL | 2013年 / 5卷 / 03期

关键词：

Optical isolation; photonic integration; WAFERS; FILMS; DIES; YIG;

D O I：

10.1109/JPHOT.2013.2264275

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An optical isolator for transverse electric (TE) polarized light is demonstrated by adhesive bonding of a ferrimagnetic garnet die on top of a 380 nm thick silicon waveguide circuit. Polarization rotators are implemented in the arms of a nonreciprocal Mach-Zehnder interferometer to rotate the polarization to transverse magnetic in the nonreciprocal phase shifter regions. Calculation of the nonreciprocal phase shift (NRPS) as a function of bonding layer thickness experienced by the TM mode in the interferometer arms is presented, together with the simulation of the robustness of the polarization rotator. Experimentally, 32 dB isolation is measured at 1540.5 nm wavelength using a magnetic field transverse to the light propagation directions. This paves the way to the cointegration of laser diodes and optical isolators on a silicon photonics platform.

引用

页数：8

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