Fiber optic biosensor based on long period grating for the detection of vitamin D

2021 ◽  
Author(s):  
Flavio Esposito ◽  
Lucia Sansone ◽  
Anubhav Srivastava ◽  
Angela Maria Cusano ◽  
Stefania Campopiano ◽  
...  
Keyword(s):  
Vitamin D ◽  
Fiber Optic ◽  
Long Period Grating ◽  
Long Period

Low-Power-Consumption Fiber-Optic Anemometer Based on Long-Period Grating With SWCNT Coating

2019 ◽  
Vol 19 (7) ◽  
pp. 2592-2597 ◽  
Author(s):  
Zigeng Liu ◽  
Fang Wang ◽  
Yang Zhang ◽  
Zhenguo Jing ◽  
Wei Peng
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Fiber Optic ◽  
Low Power Consumption ◽  
Long Period Grating ◽  
Long Period

scholarly journals Multiplexing of Fiber-Optic Long-Period Grating-Based Interferometric Sensors

2007 ◽  
Vol 25 (3) ◽  
pp. 825-829 ◽  
Author(s):  
Richard P. Murphy ◽  
Stephen W. James ◽  
Ralph P. Tatam
Keyword(s):  
Fiber Optic ◽  
Long Period Grating ◽  
Long Period ◽  
Interferometric Sensors

scholarly journals Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC

Sensors ◽  
2021 ◽  
Vol 21 (21) ◽  
pp. 7400
Author(s):  
Paulo Caldas ◽  
Gaspar Rego
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Cavity Length ◽  
Fiber Optic ◽  
Fiber Diameter ◽  
Long Period Grating ◽  
Long Period ◽  
Long Period Gratings ◽  
Cladding Mode ◽  
Mode A

In this work, we review the most important achievements of an INESC TEC long-period-grating-based fiber optic Michelson and Mach–Zehnder configuration modal interferometer with coherence addressing and heterodyne interrogation as a sensing structure for measuring environmental refractive index and temperature. The theory for Long Period Grating (LPG) interferometers and coherence addressing and heterodyne interrogation is presented. To increase the sensitivity to external refractive index and temperature, several LPG interferometers parameters are studied, including order of cladding mode, a reduction of the fiber diameter, different type of fiber, cavity length and the antisymmetric nature of cladding modes.

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