scholarly journals Fiber optic sensing of magnetic fields utilizing femtosecond laser sculpted microslots and long period gratings coated with Terfenol-D

2015 ◽  
Author(s):  
Graham C. B. Lee ◽  
Tom Allsop ◽  
Changle Wang ◽  
Ron Neal ◽  
Philip Culverhouse ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Femtosecond Laser ◽  
Fiber Optic ◽  
Long Period ◽  
Long Period Gratings ◽  
Fiber Optic Sensing

Ultra-Sensitive Fiber Optic Gas Sensor Using Graphene Oxide Coated Long Period Gratings

2019 ◽  
Vol 31 (17) ◽  
pp. 1473-1476 ◽  
Author(s):  
Mandeep Singh ◽  
Sanjeev Kumar Raghuwanshi ◽  
Om Prakash
Keyword(s):  
Graphene Oxide ◽  
Gas Sensor ◽  
Fiber Optic ◽  
Long Period ◽  
Long Period Gratings

scholarly journals Highly refractive index sensitive femtosecond laser inscribed long period gratings

2011 ◽  
Author(s):  
Edward Davies ◽  
Kyriacos Kalli ◽  
Charalambos Koutsides ◽  
Lin Zhang
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Long Period ◽  
Long Period Gratings

Fiber-optic physical and biochemical sensing based on transient and traveling long-period gratings

2008 ◽  
Vol 34 (1) ◽  
pp. 100 ◽  
Author(s):  
Ming Han ◽  
Yunjing Wang ◽  
Yunmiao Wang ◽  
Anbo Wang
Keyword(s):  
Fiber Optic ◽  
Long Period ◽  
Biochemical Sensing ◽  
Long Period Gratings

scholarly journals Bending characteristics of fiber long-period gratings with cladding index modified by femtosecond laser

2006 ◽  
Vol 24 (8) ◽  
pp. 3147-3154 ◽  
Author(s):  
T. Allsop ◽  
M. Dubov ◽  
A. Martinez ◽  
F. Floreani ◽  
I. Khrushchev ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Long Period ◽  
Long Period Gratings

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.

Highly Efficient Fiber Optic Thermal Heating Device Based on Turn-Around-Point Long Period Gratings

2021 ◽  
pp. 1-1
Author(s):  
Gaia Maria Berruti ◽  
Patrizio Vaiano ◽  
Alessandra Boniello ◽  
Sofia Principe ◽  
Giuseppe Quero ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Thermal Heating ◽  
Long Period ◽  
Highly Efficient ◽  
Heating Device ◽  
Long Period Gratings

scholarly journals Fabrication of fiber optic long period gratings operating at the phase matching turning point using an ultraviolet laser

2014 ◽  
Vol 53 (21) ◽  
pp. 4669 ◽  
Author(s):  
Rebecca Y. N. Wong ◽  
Edmond Chehura ◽  
Stephen E. Staines ◽  
Stephen W. James ◽  
Ralph P. Tatam
Keyword(s):  
Turning Point ◽  
Fiber Optic ◽  
Phase Matching ◽  
Ultraviolet Laser ◽  
Long Period ◽  
Long Period Gratings
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