How to adjust the sensitivity of a long-period fiber optic grating

Long Period Grating Based Fibre Optic Chemical Sensors

To provide the sensor with selective response to specific analytes, the cladding of the region of the optical fibre containing the LPG can be coated with a material that exhibits a change in

High Sensitivity Temperature Sensing of Long-Period

In this study, a new temperature sensor with high sensitivity was achieved by four-layer Ge and B co-doped long-period fiber grating (LPFG)

Long-period fiber grating high-sensitivity torsion sensor based on

In this paper, a long-period fiber grating torsion sensor based on rotating single-mode fiber is proposed to achieve further improvement of the torsional sensitivity of the sensor.

High Sensitivity Temperature Sensing of Long-Period Fiber Grating for

In this study, a new temperature sensor with high sensitivity was achieved by four-layer Ge and B co-doped long-period fiber grating (LPFG) based on the mode coupling principle.

Long period fiber grating-based biosensing: Recent trends and future

Conventional sensitivity enhancement strategies (dispersion turning point, mode transition, fiber diameter reduction) are described. Works exploring non-conventional sensitivity enhancement

Improvement of Temperature Sensitivity of Long-period Fiber

an interferometric exposure method to form a fine analytical grating with a period as long as the wavelength of light. LPFGs, on the other hand, create relatively long-period diffraction gratings with

Sensitivity-optimized long-period fiber gratings for refractive index

A long-period fiber grating sensor was fabricated by periodically changing the structure of single-mode fiber with an electric arc discharge technique. After the fabrication, the refractive index

Long Period Fiber Grating for Biosensing: An Improved Design

Two different methodologies: the use of dual overlay layer and tailoring of the intermodal separation between two cladding modes, have been used to enhance the add-layer sensitivity.

Optimized Strain Long-Period Fiber Grating (LPFG) Sensors

Two phenomena for enhancing the sensitivity of long-period fiber gratings are combined toward an increase of the sensitivity to strain of this type of devices: the dispersion turning point (DTP) and the

Sensitivity-Adjustable Strain Sensor Based on Shrinking Long Period

Abstract: In this letter, a novel shrinking long period fiber grating (S-LPFG) is designed. This strain sensor is fabricated through mechanical polishing and arc-discharging, allowing for certain control

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