通过粘结实现的铈：钇铁石榴石/绝缘体上硅波导光隔离器

Ce:YIG/Silicon-on-Insulator waveguide optical isolator realized by adhesive bonding.

作者信息

Ghosh S, Keyvavinia S, Van Roy W, Mizumoto T, Roelkens G, Baets R

机构信息

Department of Information Technology (INTEC), Ghent University, Gent, Belgium.

出版信息

Opt Express. 2012 Jan 16;20(2):1839-48. doi: 10.1364/OE.20.001839.

DOI:10.1364/OE.20.001839

PMID:22274528

Abstract

A waveguide optical isolator realized by adhesive bonding of a garnet die, containing a Ce:YIG magneto-optic layer, on a silicon-on-insulator waveguide circuit is demonstrated. The die was bonded on top of an asymmetric Mach-Zehnder interferometer using a 100nm thick DVS-BCB adhesive bonding layer. A static magnetic field applied perpendicular to the light propagation direction results in a non-reciprocal phase shift for the fundamental quasi-TM mode in the hybrid waveguide geometry. A maximum optical isolation of 25 dB is obtained.

摘要

展示了一种通过将包含Ce:YIG磁光层的石榴石芯片粘接在绝缘体上硅波导电路上而实现的波导光隔离器。该芯片使用100nm厚的DVS-BCB粘接层粘接在非对称马赫-曾德尔干涉仪顶部。垂直于光传播方向施加的静磁场会在混合波导结构中导致基模准横磁模产生非互易相移。获得了25dB的最大光隔离度。