Influence of shear strains on the phase of light transmitted through single-mode fiber optic strain sensors

1995 ◽  
Author(s):  
David W. Jensen ◽  
Suresh P. Pai
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Strain Sensors ◽  
Shear Strains ◽  
Fiber Optic Strain Sensors

Identification of trespasser from the signatures of buried single mode fiber optic sensor cable

2015 ◽  
Author(s):  
Preetam Suman ◽  
Pallavi Gupta ◽  
Philip B. Kassey ◽  
Neera Saxena ◽  
Yogesh Choudhary ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Optic Sensor ◽  
Optic Sensor

Fiber-optic Michelson interferometer based on α-Fe2O3/ZrO2 sensing membrane and its application in trace fluoride-ion detection

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zizheng Yue ◽  
Wenlin Feng
Keyword(s):  
Silver Film ◽  
Fiber Optic ◽  
Michelson Interferometer ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Ion Concentration ◽  
Fluoride Ion ◽  
Ion Detection ◽  
Core Fiber ◽  
Sensing Membrane

Abstract In this work, a fiber-optic fluoride-ion-detection Michelson interferometer based on the thin-core fiber (TCF) and no-core fiber (NCF) coated with α-Fe2O3/ZrO2 sensing film is proposed and presented. The single-mode fiber (SMF) is spliced with the TCF and NCF in turn, and a waist-enlarged taper is spliced between them. Then, a silver film is plated on the end face of NCF to enhance the reflection. After the absorption of fluoride ion by the sensing film, the effective refractive index (RI) of the coated cladding will change, which leads to the regular red shift of the interference dip with the increasing fluoride-ion concentration. Thus, the fluoride-ion concentrations can be determined according to the corresponding dip wavelength shifts. The results show that the sensor has an excellent linear response (R 2 = 0.995) with good sensitivity (8.970 nm/ppm) when the fluoride-ion concentration is in the range of 0–1.5 ppm. The response time is about 15 s. The sensor has the advantage of good selectivity, good temperature and pH stabilities, and can be applied to detect fluoride ion effectively.

Pigtailing of solid state single-mode fiber optic 1xN switches

1998 ◽  
Author(s):  
Ning Zhu ◽  
Peter DeDobbelaere ◽  
Anthony J. Ticknor ◽  
John I. Thackara ◽  
Janelle M. Freeman ◽  
...  
Keyword(s):  
Solid State ◽  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber

Influence of single mode fiber bending on fiber optic gyroscope scale factor stability

2016 ◽  
Vol 45 (1) ◽  
pp. 0122001
Author(s):  
谢良平 Xie Liangping ◽  
李 瑞 Li Rui ◽  
张 斌 Zhang Bin ◽  
王京献 Wang Jingxian ◽  
张春熹 Zhang Chunxi
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Scale Factor ◽  
Fiber Optic Gyroscope

Single-mode fiber-optic polarizer

1980 ◽  
Vol 5 (11) ◽  
pp. 479 ◽  
Author(s):  
R. A. Bergh ◽  
H. C. Lefevre ◽  
H. J. Shaw
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber

Fiber Fuse Generation in Single-Mode Fiber-Optic Connectors

2004 ◽  
Vol 16 (1) ◽  
pp. 174-176 ◽  
Author(s):  
Y. Shuto ◽  
S. Yanagi ◽  
S. Asakawa ◽  
M. Kobayashi ◽  
R. Nagase
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber

scholarly journals Stellar Diameter Measurements with Fiber Optic Double Fourier Interferometry—Experimental Study

1995 ◽  
Vol 166 ◽  
pp. 362-362
Author(s):  
Peiqian Zhao ◽  
V. Coudé Du Foresto ◽  
J.-M. Mariotti ◽  
P. Lena ◽  
Bifang Zhou
Keyword(s):  
Fiber Optics ◽  
Fiber Optic ◽  
Spectral Band ◽  
Single Mode ◽  
Optical Path Difference ◽  
Path Difference ◽  
Single Mode Fiber ◽  
Visible Range ◽  
Beam Combination ◽  
Long Baseline

Long baseline optical interferometry has been successfully employed to measure the diameters of stars. In this technique, bandwidth smearing can affect the measurement accuracy. These bandwidth smearing effects can be, to some extent, eliminated by dividing the whole observing spectral band into sub-bands and calculating the star's diameter based on the visibilities and spatial frequencies at the corresponding sub-bands. In the visible range, dividing the whole spectral band can be implemented by introducing a spectrograph, while in the IR domain, this operation can be performed efficiently with the technique of double Fourier interferometry (DFI) without losing the advantage of multiplexing. In particular, the use of IR single-mode fiber optics for DFI will make the interferometer extremely compact, light, insensitive to surrounding conditions, etc. We established an IR single-mode fiber optic double Fourier interferometer in the laboratory, in which the optical path difference modulations are generated by stretching fiber arms and the beam combination is carried out with a fiber optic directional coupler. In this paper, we report on experiments and experimental results from measurements of the diameter of an artificial star with the technique of fiber optic DFI.

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