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1. (WO2018041178) MAGNETIC SURFACE FAST-MODE ARBITRARY-DIRECTION CONTROLLABLE UNIDIRECTIONAL BEND WAVEGUIDE WITH LOW-LOSS MAGNETO-OPTIC GAP

Pub. No.:    WO/2018/041178    International Application No.:    PCT/CN2017/099815
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Sep 01 01:59:59 CEST 2017
IPC: G02F 1/095
G02B 6/125
Applicants: SHENZHEN UNIVERSITY
深圳大学
Inventors: OUYANG, Zhengbiao
欧阳征标
ZHENG, Yaoxian
郑耀贤
AI, Yuexia
艾月霞
Title: MAGNETIC SURFACE FAST-MODE ARBITRARY-DIRECTION CONTROLLABLE UNIDIRECTIONAL BEND WAVEGUIDE WITH LOW-LOSS MAGNETO-OPTIC GAP
Abstract:
Disclosed is a magnetic surface fast-mode arbitrary-direction controllable unidirectional bend waveguide with a low-loss magneto-optic gap. The unidirectional bend waveguide comprises an optical input port (1), an optical output port (2), magneto-optic material layers (3, 4), a dielectric layer (5) and two direction-controllable bias magnetic fields (H0) in opposite directions. The magneto-optic material layers (3, 4) and the dielectric layer (5) are an optical waveguide of a three-layer structure, wherein the three-layer structure is bend-shaped at an arbitrary angle. The magneto-optic material layers (3, 4) are provided with the two direction-controllable bias magnetic fields (H0) in opposite directions. The dielectric layer (5) is in a gap between the magneto-optic material layers (3, 4). A port of the unidirectional bend waveguide is the optical input port (1), and a right port thereof is the optical output port (2). The dielectric layer (5) is in the shape of a circular ring at a waveguide bending portion. Magnetic surface fast waves are on surfaces of the magneto-optic material layers (3, 4) and the dielectric layer (5). The unidirectional bend waveguide has a simple structure, has low loss and has high transmission efficiency, and is applicable to large-scale optical path integration.