Design of A Lithium Niobate on Insulator Based Waveguide Grating for Refractive Index Sensor

Design of A Lithium Niobate on Insulator Based Waveguide Grating for Refractive Index Sensor

A waveguide grating based on lithium niobate on insulator for refractive index sensor is proposed and simulated. To satisfy the requirement of high accuracy in sensing, the sensor is achieved by a Bragg waveguide grating with uniform period which is divided into sensing window and reference window....

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Bibliographic Details
Published in:2022 IEEE 5th Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC) Vol. 5; pp. 734 - 737
Main Authors: Gong, Zisu, Liu, Meng
Format: Conference Proceeding
Language:English
Published: IEEE 16-12-2022
Subjects:
Bragg gratings
Information management
Insulators
Lithium niobate
lithium niobate on insulator
Refractive index
refractive index sensor
Sensitivity
Sensors
waveguide grating
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Summary:A waveguide grating based on lithium niobate on insulator for refractive index sensor is proposed and simulated. To satisfy the requirement of high accuracy in sensing, the sensor is achieved by a Bragg waveguide grating with uniform period which is divided into sensing window and reference window. Finite-difference time-domain method is used to optimize the design. The sensor offers a sensitivity of 78.6 nm/refractive index unit (RIU) and a minimum detection limit of 10- 2 RIU.
ISSN:2693-2776
DOI:10.1109/IMCEC55388.2022.10020013