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Femtosecond Laser Refractive Index Modulated Multimode Fiber for High Sensitivity Vector Bending Measurement

A femtosecond (fs) laser fabricated refractive index (RI) modulated multimode fiber (MMF) for high sensitivity vector bending measurement is presented. A fs laser-induced local positive RI modulation in the MMF core results in a non-circular symmetric RI distribution of the MMF. Such a RI-modulated MMF used in single-mode-multimode-single-mode (SMS) fiber structure exhibits a bending-dependent spectral shift response. Due to the large core size of the MMF, the RI modulated area can be relatively far away from the fiber core axis, which in turn results in a greater effective RI change during bending. Experimental results show that the highest bending sensitivity of −45.8 nm/m −1 is achieved at 0° orientation with the resonant wavelength of 1554.4 nm. In addition to its high sensitivity and simple structure, this vector bending sensor exhibits ultra-low temperature crosstalk in bending measurements, as low as 0.0002 m −1 /°C, which makes it an excellent candidate for accurate vector bending monitoring applications.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.40 No.19 October 1, 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 6501-6507

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

MULTIMODE INTERFERENCE
FEMTOSECOND LASER
REFRACTIVE INDEX MODULATION
VECTOR BENDING MEASUREMENT

Info Detail Spesifik

DOI: 10.1109/JLT.2022.3195096

Pernyataan Tanggungjawab

Ruoning Wang, Ke Tian, Meng Zhang, Zhiyuan Zhao, Gerald Farrell, Elfed Lewis, Pengfei Wang

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