Long-period gratings and microcavity in-line Mach Zehnder interferometers as highly sensitive optical fiber platforms for bacteria sensing

T Eftimov, M Janik, M Koba, M Śmietana, P Mikulic… - Sensors, 2020 - mdpi.com
Selected optical fiber sensors offer extraordinary sensitivity to changes in external refractive
(RI), which make them promising for label-free biosensing. In this work the most sensitive …

Design, fabrication and characterisation of silica-titania thin film coated over coupled long period fibre gratings: Towards bio-sensing applications

P Biswas, F Chiavaioli, S Jana, N Basumallick… - Sensors and Actuators B …, 2017 - Elsevier
In this paper we report on the application of over coupled long period fibre gratings
(OCLPFGs) for detecting small changes in the surrounding refractive index (SRI). In addition …

Compact eccentric long period grating with improved sensitivity in low refractive index region

F Shen, K Zhou, N Gordon, L Zhang, X Shu - Optics Express, 2017 - opg.optica.org
We demonstrate a compact eccentric long period grating with enhanced sensitivity in low
refractive index region. With a period designed at 15 µm for coupling light to high order …

Turn around point long period fiber gratings with coupling to asymmetric cladding modes fabricated by a femtosecond laser and coated with titanium dioxide

D Viveiros, JMMM de Almeida, L Coelho… - Journal of Lightwave …, 2021 - opg.optica.org
A detailed study of turn around point (TAP) long period fiber gratings (LPFGs) with coupling
to the asymmetric cladding modes of a standard single-mode fiber (SMF-28e), fabricated by …

A novel dual resonance long period waveguide grating based highly sensitive refractive index sensor with reduced temperature sensitivity

N Saha, A Kumar - Optics Communications, 2020 - Elsevier
In this paper, we are proposing a novel structure to reduce the temperature cross sensitivity
of a refractive index (RI) sensor based on dual resonance long period waveguide grating in …

Simulation of novel intensity modulated cascaded coated LPFG sensor based on PMTP

W Feng, Z Gu, Q Lin, J Sang - Journal of Optics, 2017 - iopscience.iop.org
This paper presents a novel intensity modulated cascaded long-period fiber grating
(CLPFG) sensor which is cascaded by two same coated long-period fiber gratings (LPFGs) …

Design of a high-sensitivity cascaded long-period fiber grating sensor operating at PMTP

W Feng, Z Gu - JOSA B, 2018 - opg.optica.org
This paper presents a novel cascaded long-period fiber grating (CLPFG) sensor which is
cascaded by two identical coated long-period fiber gratings (LPFGs) operating at the phase …

Refractive Index Sensing Characteristics of Long-Period Fiber Gratings Near Dispersion Turning Points at 2 μm Waveband

W Wang, Y Zhao, Z Liu, Y Liu, Y Yang… - 2020 IEEE 5th …, 2020 - ieeexplore.ieee.org
In this paper, we demonstrate the surrounding refractive index (SRI) sensing characteristics
of long-period fiber gratings (LPFGs) near dispersion turning points (DTP) working at 2 μ m …

Highly sensitive RI and temperature sensor based on cascaded LPGs at near the phase-matching turning point

W Zhou, M Zou, Y Moreno, Y Sun… - 2019 18th …, 2019 - ieeexplore.ieee.org
We demonstrated a highly sensitivity refractive index (RI) and temperature sensor based on
cascaded long-period gratings (LPGs) operating at near the phase-matching turning point …

[PDF][PDF] Design, fabrication and characterisation of silica-titania

P Biswas, F Chiavaioli, S Jana - Lightwave Technol, 2016 - academia.edu
In this paper we report on the application of over coupled long period fibre gratings
(OCLPFGs) for detecting small changes in the surrounding refractive index (SRI). In addition …