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Spectral and Sensing Performance of Long-Period Fiber Gratings at 2 μm Waveband

In this paper, we demonstrate the transmission spectral and surrounding refractive index (SRI) sensing performance of long-period fiber gratings (LPFGs) at 2 μm waveband. The cladding modes operating at 2 μm waveband show higher SRI sensitivity than 1.55 μm waveband. The influence of a little off resonance region of grating period, refractive index modulation and duty cycle of gratings are analyzed theoretically. Additionally, the LPFGs of LP08 mode near dispersion turning point operating at 2 μm waveband are investigated theoretically and experimentally. Mode splitting brings out with the increasing SRI. After the resonant dip splitting into two dips (dip A and dip A′), the SRI sensitivity of dip A are measured to be as high as −8495.2 nm/RIU in the SRI region of 1.445–1.457. The proposed 2-μm-waveband LPFGs makes it a potential in biochemical and environmental monitoring.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.40 No.3 February 1 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 855-862

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

LONG PERIOD FIBER GRATINGS
DISPERSION TURNING POINT
2 UM WAVEBAND
SURROUNDING REFRACTIVE INDEX

Info Detail Spesifik

10.1109/JLT.2021.3112170

Pernyataan Tanggungjawab

Yunhe Zhao, Wei Wang, Yunqi Liu, Zuyao Liu, Xuping Zhang, et al.

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