Design and fabrication of a single-mode optical fiber based refractive-index sensor

2010 ◽  
Vol 52 (6) ◽  
pp. 1408-1411 ◽  
Author(s):  
Koppole Kamakshi ◽  
Vipul Rastogi ◽  
Ajeet Kumar ◽  
Jagdish Rai
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Single Mode ◽  
Refractive Index Sensor ◽  
Single Mode Optical Fiber

Influence of refractive index measurement accuracy on single-mode optical fiber modeling

1992 ◽  
Vol 4 (11) ◽  
pp. 1282-1284 ◽  
Author(s):  
E. Jaunart ◽  
P. Megret ◽  
J.C. Froidure ◽  
P. Crahay ◽  
M. Blondel ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Measurement Accuracy ◽  
Single Mode ◽  
Refractive Index Measurement ◽  
Single Mode Optical Fiber ◽  
Index Measurement

scholarly journals Preparation and Characterization of Microsphere ZnO ALD Coating Dedicated for the Fiber-Optic Refractive Index Sensor

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 306 ◽  
Author(s):  
Paulina Listewnik ◽  
Marzena Hirsch ◽  
Przemysław Struk ◽  
Matthieu Weber ◽  
Mikhael Bechelany ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Fiber Optic ◽  
Single Mode ◽  
Atomic Layer ◽  
Fiber Optic Sensor ◽  
Refractive Index Sensor ◽  
Layer Deposition ◽  
Fabry Perot

We report the fabrication of a novel fiber-optic sensor device, based on the use of a microsphere conformally coated with a thin layer of zinc oxide (ZnO) by atomic layer deposition (ALD), and its use as a refractive index sensor. The microsphere was prepared on the tip of a single-mode optical fiber, on which a conformal ZnO thin film of 200 nm was deposited using an ALD process based on diethyl zinc (DEZ) and water at 100 °C. The modified fiber-optic microsphere was examined using scanning electron microscopy and Raman spectroscopy. Theoretical modeling has been carried out to assess the structure performance, and the performed experimental measurements carried out confirmed the enhanced sensing abilities when the microsphere was coated with a ZnO layer. The fabricated refractive index sensor was operating in a reflective mode of a Fabry–Pérot configuration, using a low coherent measurement system. The application of the ALD ZnO coating enabled for a better measurement of the refractive index of samples in the range of the refractive index allowed by the optical fiber. The proof-of-concept results presented in this work open prospects for the sensing community and will promote the use of fiber-optic sensing technologies.

scholarly journals A Refractive Index Sensor Based on a Fabry–Perot Interferometer Manufactured by NIR Laser Microdrilling and Electric Arc Fusion

Photonics ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 109
Author(s):  
Nespereira ◽  
Coelho ◽  
Rebordão
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Single Mode ◽  
Electric Arc ◽  
Refractive Index Sensor ◽  
Formation Processes ◽  
Fringe Visibility ◽  
Fabry Perot ◽  
A New Technique ◽  
Nir Laser

In-line Fabry–Perot cavities manufactured by a new technique using electric arc fusion of NIR laser microdrilled optical fiber flat tips were studied herein for refractive index sensing. Sensors were produced by creating an initial hole on the tip of a standard single-mode telecommunication optical fiber using a Q-switched Nd:YAG laser. Laser ablation and plasma formation processes created 5 to 10 micron cavities. Then, a standard splicing machine was used to fuse the microdrilled fiber with another one, thus creating cavities with lengths around 100 micrometers. This length has been proven to be necessary to obtain an interferometric signal with good fringe visibility when illuminating it in the C-band. Then, the sensing tip of the fiber, with the resulting air cavity, was submitted to several cleaves to enhance the signal and, therefore, its response as a sensor, with final lengths between tens of centimeters for the longest and hundreds of microns for the shortest. The experimental results were analyzed via two signal analysis techniques, fringe visibility and fast Fourier transform, for comparison purposes. In absolute values, the obtained sensitivities varied between 0.31 nm−1/RIU and about 8 nm−1/RIU using the latter method and between about 34 dB/RIU and 54 dB/RIU when analyzing the fringe visibility.

Thermally Induced refractive-index changes in a single-mode optical-fiber preform

1984 ◽  
Author(s):  
W. T. Anderson ◽  
P. F. Glodis ◽  
D. L. Philen ◽  
A. A. Schenk ◽  
C. L. Bice
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Single Mode ◽  
Fiber Preform ◽  
Thermally Induced ◽  
Single Mode Optical Fiber ◽  
Index Changes
Sign in / Sign up

Export Citation Format

Share Document