Temperature-insensitive design of waveguide isolator employing nonreciprocal guided-radiation mode conversion

被引：1

作者：

Choowitsakunlert, Salinee ^{[1
]}

Kobashigawa, Takuya ^{[1
]}

Hosoya, Nariaki ^{[1
]}

Silapunt, Rardchawadee ^{[2
]}

Yokoi, Hideki ^{[1
,3
]}

机构：

[1] Shibaura Inst Technol, Grad Sch Engn & Sci, Tokyo 1358548, Japan

[2] King Mongkuts Univ Technol Thonburi, Elect & Telecommun Engn, Bangkok 10140, Thailand

[3] Shibaura Inst Technol, SIT Res Ctr Green Innovat, Tokyo 1358584, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 11期

关键词：

HYDROGENATED AMORPHOUS-SILICON; OPTICAL ISOLATOR; PHASE-SHIFT; MAGNETOOPTICAL ISOLATOR; FARADAY; GARNET; LAYER;

D O I：

10.7567/JJAP.57.112201

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of the optical isolator employing a nonreciprocal guided-radiation mode conversion is investigated. The optical isolator consists of a rib-type magnetooptic waveguide with an amorphous Si (a-SI:H) guiding layer. The nonreciprocal phase shift in the optical isolator is calculated at a wavelength of 1.55 mu m. The relationship of rib height and rib width for the isolator operation is clarified for various operating temperatures. Refractive indices of layers in the magnetooptic waveguide are considered since proper refractive indices can circumvent waveguide parameter deviation due to the temperature shift. The results show that athermal operation can be achieved by the negative temperature dependence of the refractive index of the upper cladding layer, and the relationship of waveguide parameters varies only slightly with the selected upper cladding layer. (C) 2018 The Japan Society of Applied Physics

引用

页数：5

共 21 条

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