scholarly journals Calculation and simulation of optical fiber core and cladding mode effective refractive index

2013 ◽  
Vol 62 (14) ◽  
pp. 140201
Author(s):  
Li Li-Jun ◽  
Lai Yong-Zheng ◽  
Cao Mao-Yong ◽  
Liu Chao ◽  
Yuan Xue-Mei ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Effective Refractive Index ◽  
Fiber Core ◽  
Cladding Mode

scholarly journals Modes Effective Refractive Index Difference Measurement in Few-mode Optical Fiber

2016 ◽  
Vol 140 ◽  
pp. 77-84 ◽  
Author(s):  
Jing Zhang ◽  
Zhifang Wu ◽  
Tianye Huang ◽  
Xuguang Shao ◽  
Ping Shum
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Effective Refractive Index ◽  
Difference Measurement ◽  
Refractive Index Difference

Utlra-Thermostable Long-Period Gratings Written in Nitrogen-Doped Silica Fibers

1998 ◽  
Vol 531 ◽  
Author(s):  
V. I. Karpov ◽  
M. V. Grekov ◽  
E. M. Dianov ◽  
K. M. Golant ◽  
R. R. Khrapko
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Effective Refractive Index ◽  
Nitrogen Doped ◽  
Fiber Core ◽  
Long Period ◽  
Silica Fibers ◽  
Long Period Gratings ◽  
Silica Core

AbstractLong-period gratings were written in nitrogen-doped-silica-core optical fibers by point heating. The periodic variations of the effective refractive index were induced via diffusion of nitrogen from the fiber core. It is shown experimentally that such gratings remain functional at temperatures of up to 1200 °C.

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.

scholarly journals Refractive index sensitivity enhancement of optical fiber cladding mode by depositing nanofilm via ALD technology

2013 ◽  
Vol 21 (22) ◽  
pp. 26136 ◽  
Author(s):  
Ying Zhao ◽  
Fufei Pang ◽  
Yanhua Dong ◽  
Jianxiang Wen ◽  
Zhenyi Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Sensitivity Enhancement ◽  
Refractive Index Sensitivity ◽  
Cladding Mode ◽  
Index Sensitivity ◽  
Optical Fiber Cladding

Cost effective refractive index sensor based on optical fiber micro cavities produced by the catastrophic fuse effect

Measurement ◽  
2016 ◽  
Vol 77 ◽  
pp. 265-268 ◽  
Author(s):  
M. Fátima Domingues ◽  
Paulo Antunes ◽  
Nélia Alberto ◽  
Rita Frias ◽  
Rute A.S. Ferreira ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Effective Refractive Index ◽  
Cost Effective ◽  
Refractive Index Sensor

scholarly journals Refractive Index Sensor for Salty and Sugary Solution Based on Optical Fiber Technical

2021 ◽  
Vol 1879 (3) ◽  
pp. 032077
Author(s):  
Maher Khaleel Ibrahim ◽  
Shehab A Kadhim ◽  
Nabeil Ibrahim Fawaz
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Refractive Index Sensor
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