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1. (WO2018041188) LEAKAGE-FREE, LOW-LOSS WAVEGUIDE HAVING FAST MODE AT MAGNETIC SURFACE OF MAGNETO-OPTICAL GAP THEREOF AND BEING UNIDIRECTIONALLY FLEXIBLE TO ANY ANGLE

Pub. No.:    WO/2018/041188    International Application No.:    PCT/CN2017/099826
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
Title: LEAKAGE-FREE, LOW-LOSS WAVEGUIDE HAVING FAST MODE AT MAGNETIC SURFACE OF MAGNETO-OPTICAL GAP THEREOF AND BEING UNIDIRECTIONALLY FLEXIBLE TO ANY ANGLE
Abstract:
A leakage-free, low-loss waveguide having a fast mode at a magnetic surface of a magneto-optical gap thereof and being unidirectionally flexible to any angle comprises: a light input port (1); a light output port (2); two magneto-optical material layers (3, 4); a dielectric layer (5); four wave-absorbing layers (6, 7, 8, 9); and two bias magnetic fields (H0). The two bias magnetic fields (H0) are arranged in opposite directions, and the orientation thereof can be controlled. The two magneto-optical material layers (3, 4) and the dielectric layer (5) form an optical waveguide having a three-layer structure bendable to any angle. The two bias magnetic fields (H0), which are arranged in opposite directions and the orientation thereof can be controlled, are provided at the magneto-optical material layers (3, 4). A gap between the magneto-optical material layers (3, 4) is the dielectric layer (5). A port (1) of the unidirectionally bendable waveguide is a light input port (1), and a port (2) of the unidirectionally bendable waveguide is the light output port (2). The dielectric layer (5) has a ring-shaped portion at where the waveguide bends. A magnetic surface fast-wave exists at a surface between the magneto-optical material layers (3, 4) and the dielectric layer (5). The invention has a simple structure and high transmission efficiency, and is suitable for large-scale optical integrated circuits.