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Simultaneous Sensing of Refractive Index and Temperature With Supermode Interference

In general, a sensor is used to monitor a single parameter only, and in many cases, a reference sensor is necessary to compensate the effect of temperature. Here, we demonstrate that a single supermode interferometer is capable of monitoring two parameters simultaneously. Said interferometer was fabricated with a segment of strongly coupled multicore fiber fusion spliced at the end of a standard single mode fiber. The free end of the multicore fiber was flat, thus, it behaved as a low reflectivity mirror whose reflection depended on the external refractive index. The reflection spectrum of our supermode interferometer consisted of well-defined periodic maxima and minima whose values and position varied when the interferometer was exposed to refractive index and temperature changes. In the Fourier domain, the changes of the interference pattern can be decoded easily. We demonstrate that the supermode interferometer here proposed can be useful to measure the thermo-optic coefficient of a sample. An important advantage of the device reported here is that the length of the multicore fiber is not determinant on the performance of the sensor. In addition, the device can be reused multiple times.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.22 November 15 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 7351-7357

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

OPTICAL FIBER SENSORS
INTERFEROMETERS
REFRACTOMETERS
DUAL PARAMETER SENSORS
MULTICORE FIBER SENSORS
SUPERMODE INTERFEROMETERS
THERMO-OPTIC COEFFICIENT

Info Detail Spesifik

10.1109/JLT.2021.3113863

Pernyataan Tanggungjawab

Jose A. Flores-Bravo, Ruben Fernández, Enrique Antonio Lopez, Joseba Zubia, Axel Schülzgen, Rodrigo Amezeua Correa, Joel Villatoro

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