Hollow Fiber Coupler Sensor

Date

2019

Authors

Kuruba, Nithin
Lu, Tao

Journal Title

Journal ISSN

Volume Title

Publisher

Sensors

Abstract

We present a bi-conical optical directional coupler composed of solid and hollow core fibers. Through an evanescent wave coupling mechanism, the detection of liquid refractive index and its temperature are demonstrated. The experimental results illustrated that the sensor offers a sensitivity of 4.03±0.50 volts per refractive index units (V/RIU) for refractive indices ranging from 1.331±0.003 to 1.403±0.003 with a resolution of 3.5×10−3 refractive index units (RIU).

Description

Keywords

hollow core fiber, directional coupler, biosensor

Citation

Kuruba, N. & Lu, T. (2019). Hollow Fiber Coupler Sensor. Sensors, 19(4), 806. https://doi.org/10.3390/s19040806