Single-mode fiber-optical power divider: encapsulated etching technique

1979 ◽  
Vol 4 (1) ◽  
pp. 29 ◽  
Author(s):  
S. K. Sheem ◽  
T. G. Giallorenzi
Keyword(s):  
Optical Power ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Power Divider ◽  
Etching Technique ◽  
Fiber Optical

scholarly journals Fiber Optical Hydrogen Sensor Based on WO3-Pd2Pt-Pt Nanocomposite Films

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 128
Author(s):  
Jixiang Dai ◽  
Yi Li ◽  
Hongbo Ruan ◽  
Zhuang Ye ◽  
Nianyao Chai ◽  
...  
Keyword(s):  
Optical Power ◽  
Single Mode ◽  
Hydrogen Sensor ◽  
Single Mode Fiber ◽  
Nanocomposite Films ◽  
Electric Signal ◽  
Hydrogen Sensing ◽  
Air Atmosphere ◽  
Sensing Material ◽  
Wide Range

In this paper, WO3-Pd2Pt-Pt nanocomposite films were deposited on a single mode fiber as the hydrogen sensing material, which changes its reflectivity under different hydrogen concentration. The reflectivity variation was probed and converted to an electric signal by a pair of balanced InGaAs photoelectric detectors. In addition, the performance of the WO3-Pd2Pt-Pt composite film was investigated under different optical powers, and the irrigating power was optimized at 5 mW. With the irrigation of this optical power, the hydrogen sensitive film exhibits quick response toward 100 ppm hydrogen in air atmosphere at a room temperature of 25 °C. The experimental results demonstrate a high resolution at 5 parts per million (ppm) within a wide range from 100 to 5000 ppm in air. This simple and compact sensing system can detect hydrogen concentrations far below the explosion limit and provide early alert for hydrogen leakage, showing great potential in hydrogen-related applications.

Single-mode fiber-optical polarization rotator

1979 ◽  
Vol 18 (11) ◽  
pp. 1857 ◽  
Author(s):  
R. Ulrich ◽  
M. Johnson
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Optical Polarization ◽  
Polarization Rotator ◽  
Fiber Optical
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