Demonstration of an optical phased array using electro-optic polymer phase shifters

被引：14

作者：

Hirano, Yoshikuni ^{[1
]}

Motoyama, Yasushi ^{[1
]}

Tanaka, Katsu ^{[1
]}

Machida, Kenji ^{[1
]}

Yamada, Toshiki ^{[2
]}

Otomo, Akira ^{[2
]}

Kikuchi, Hiroshi ^{[1
]}

机构：

[1] NHK Sci & Technol Res Labs, Setagaya Ku, Tokyo 1578510, Japan

[2] Natl Inst Informat & Commun Technol, Adv ICT Res Inst, Kobe, Hyogo 6512492, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 03期

关键词：

MACH-ZEHNDER MODULATOR; HIGH-SPEED; POWER;

D O I：

10.7567/JJAP.57.03EH09

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have been investigating an optical phased array (OPA) using electro-optic (EO) polymers in phase shifters to achieve ultrafast optical beam steering. In this paper, we describe the basic structures of the OPA using EO polymer phase shifters and show the beam steering capability of the OPA. The designed OPA has a multimode interference (MMI) beam splitter and 8-channel polymer waveguides with EO polymer phase shifters. We compare 1 x 8 MMI and cascaded 1 x 2 MMI beam splitters numerically and experimentally, and then obtain uniform intensity outputs from the 1 x 8 beam splitter. We fabricate the EO polymer OPA with a 1 x 8 MMI beam splitter to prevent intensity dispersion due to radiation loss in bending waveguides. We also evaluate the optical beam steering capability of the fabricated OPA and found a 2.7 degrees deflection of far-field patterns when applying a voltage difference of 25V in adjacent phase shifters. (C) 2018 The Japan Society of Applied Physics

引用

页数：5

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