scholarly journals Transmission Loss Theories of Optical Fibers: Part I

1979 ◽  
Vol 7 (3) ◽  
pp. 251-263
Author(s):  
Junichi SAKAI
Keyword(s):  
Optical Fibers ◽  
Transmission Loss

A Step-Index Multimode Fiber-Optic Microbend Displacement Sensor Wavelength Dependent Loss

2019 ◽  
pp. 47-60
Author(s):  
Sami D. Alaruri
Keyword(s):  
Optical Fibers ◽  
Fiber Optic ◽  
Transmission Loss ◽  
Wavelength Dependence ◽  
Fiber Optic Sensors ◽  
Fused Silica ◽  
Displacement Sensor ◽  
Sensor Output ◽  
Core Diameter ◽  
Step Index

In this chapter, the wavelength dependence of bend loss in a step-index multimode optical fiber (100 µm core diameter; fused silica) was investigated for fiber bend radii ranging between 2.0 and 4.5 mm using six laser excitation wavelengths, namely, 337.1, 470, 590, 632.8, 750, and 810 nm. The results obtained from fitting the bend loss measurements to Kao's model and utilizing MATLAB® indicate that bend loss is wavelength dependent and transmission loss in multimode optical fibers increases with the decrease in the fiber bend radius. Furthermore, the response of a microbend fiber-optic displacement sensor was characterized at 337.1, 470, 632.8, 750, and 810 nm. Measurements obtained from the microbend sensor indicate that the sensor output power is linear with the applied displacement and the sensor output is wavelength dependent. Lastly, references for industrial and biomedical applications of microbend fiber-optic sensors are provided. Finally, a brief description for the transmission loss mechanisms in optical fibers is given.

Effects of the Weak Absorption Tail on the Transmission Loss of Ge-Sb-Se Optical Fibers

2005 ◽  
Vol 88 (5) ◽  
pp. 1205-1208 ◽  
Author(s):  
Woon Jin Chung ◽  
Bong Je Park ◽  
Hong Seok Seo ◽  
Joon Tae Ahn ◽  
Myung-Hyun Lee ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Transmission Loss ◽  
Weak Absorption ◽  
Absorption Tail

Estimation of long-term transmission loss increase in silica-based optical fibers under hydrogen atmosphere

1988 ◽  
Vol 6 (2) ◽  
pp. 218-225 ◽  
Author(s):  
M. Kuwazuru ◽  
Y. Namihira ◽  
K. Mochizuki ◽  
Y. Iwamoto
Keyword(s):  
Optical Fibers ◽  
Transmission Loss ◽  
Hydrogen Atmosphere

Transmission loss characteristics of telluride‐based chalcogenide glass optical fibers

1994 ◽  
Vol 76 (4) ◽  
pp. 2036-2040 ◽  
Author(s):  
Toshio Katsuyama ◽  
Hiroyoshi Matsumura
Keyword(s):  
Chalcogenide Glass ◽  
Optical Fibers ◽  
Transmission Loss

Advance of Plastic Optical Fibers

1989 ◽  
Vol 172 ◽  
Author(s):  
Fumio Ide ◽  
Takashi Yamamoto
Keyword(s):  
Methyl Methacrylate ◽  
Optical Fibers ◽  
Transmission Loss ◽  
Future Prospect ◽  
Fiber Type ◽  
Low Transmission ◽  
Poly Methyl Methacrylate ◽  
The Third ◽  
Heat Resistant ◽  
Plastic Optical Fibers

AbstractPlastic optical fibers (so called POF) are already in wide use in a large number of fields. This paper gives an overview of the field including the advantages of plastic optical fibers, the various types of fibers and the materials in them.Then, the properties of three types of fibers which have recently been developed, are discussed. The first is fibers with a poly-methyl-methacrylate (PMMA) core, which have a low transmission loss. Another is heat resistant fibers for use in automobiles. And the third is the multi-fiber type for image guides. And finally, the applications of these fibers and their future prospect are discussed.

Study of Wavelength-Dependent Bend Loss in Step-Index Multimode Fiber-Optic Microbend Displacement Sensor

2017 ◽  
Vol 6 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Sami D. Alaruri
Keyword(s):  
Optical Fibers ◽  
Fiber Optic ◽  
Transmission Loss ◽  
Wavelength Dependence ◽  
Fused Silica ◽  
Displacement Sensor ◽  
Sensor Output ◽  
Bend Radius ◽  
Core Diameter ◽  
Step Index

In this article, the wavelength dependence of bend loss in a step-index multimode optical fiber (100 µm core diameter; fused silica) was investigated for fiber bend radii ranging between 2.0 and 4.5 mm using six excitation wavelengths, namely, 337.1, 470, 590, 632.8, 750 and 810 nm. The results obtained from fitting the bend loss measurements to Kao's model and utilizing MATLAB indicate that bend loss is wavelength dependent and transmission loss in multimode optical fibers increases with the decrease in the fiber bend radius. Furthermore, the response of a microbend fiber optic displacement sensor was characterized at 337.1, 470, 632.8, 750 and 810 nm. Measurements obtained from the microbend sensor indicate that the sensor output power is linear with the applied displacement and the sensor output is wavelength dependent.

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