Optical fiber temperature sensor using a thin film band pass filter and dual wavelength push-pull reflectometry

2008 ◽  
Author(s):  
Yasutoshi Komatsu ◽  
Keiichi Inoue ◽  
Masayuki Nakano ◽  
Seiichi Onoda
Keyword(s):  
Thin Film ◽  
Optical Fiber ◽  
Temperature Sensor ◽  
Dual Wavelength ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

scholarly journals Some Useful Design Parameters of Non-Uniform Integrated Band-Pass Filters

1983 ◽  
Vol 11 (1) ◽  
pp. 65-70
Author(s):  
H. R. Singh
Keyword(s):  
Thin Film ◽  
Performance Characteristics ◽  
Design Parameters ◽  
Distributed Parameter ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass ◽  
Relationship Of ◽  
Important Design ◽  
Terminal Band

Important design parameters for a two-port three-terminal band-pass filter configuration of the integrated thin-film exponential distributed parameter R–C–KR microstructure are presented. The circuit exhibits load independent characteristics. The changes in the value of design parameters under varying loading conditions are given. Various plots illustrating the inter-relationship of the different parameters with each other that can serve as guidelines for a system designer to obtain a pre-assigned pattern of the performance characteristics of the microstructure are included.

scholarly journals A 1064- and 1074-nm Dual-Wavelength Nd:YAG Laser Using a Fabry–Perot Band-pass Filter as Output Mirror

2014 ◽  
Vol 6 (4) ◽  
pp. 1-6 ◽  
Author(s):  
X. Z. Wang ◽  
Z. F. Wang ◽  
Y. K. Bu ◽  
L. J. Chen ◽  
G. X. Cai ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Dual Wavelength ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Output Mirror ◽  
Fabry Perot ◽  
Band Pass

scholarly journals Behaviour of Parallel Coupled Microstrip Band Pass Filter and Simple Microstripline due to Thin-Film Al2O3Overlay

1996 ◽  
Vol 19 (2) ◽  
pp. 125-132 ◽  
Author(s):  
S. B. Rane ◽  
Vijaya Puri
Keyword(s):  
Thin Film ◽  
Pass Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Design Procedures ◽  
X Band ◽  
Band Pass ◽  
Different Thickness

The X-band behaviour of a seven-section parallel-coupled microstrip band pass filter and microstripline due to thin-film Al2O3overlay of different thickness is reported in this paper. This Al2O3film can give a homogeneous overlay structure. There is a substantial increase in the bandwidth due to the overlay, the pass band extending towards higher frequency side. In most of the cases, an increase in the pass band transmittance of a microstripline also increases due to a thin-film Al2O3overlay, especially for frequencies less than 9.0 GHz. At higher frequencies, random variations are observed. It is felt that thin-film overlays can be used to modify the microstripline circuit properties, thereby avoiding costly and time consuming elaborate design procedures.

Fabrication of Band-Pass Filter in Optical Fiber Communication System

2016 ◽  
Vol 43 (3) ◽  
pp. 0305003
Author(s):  
张雷 Zhang Lei ◽  
张于帅 Zhang Yushuai ◽  
张静 Zhang Jing ◽  
付秀华 Fu Xiuhua
Keyword(s):  
Optical Fiber ◽  
Communication System ◽  
Optical Fiber Communication ◽  
Band Pass Filter ◽  
Fiber Communication ◽  
Pass Filter ◽  
Optical Fiber Communication System ◽  
Band Pass

Experimental Insights on Factors Influencing Sensitivity of Thin Film Narrow Band-Pass Filters

2019 ◽  
Vol 14 (11) ◽  
pp. 1548-1554
Author(s):  
Hai-Gang Hou ◽  
Shahid Hussain ◽  
Hai-Cheng Shao ◽  
Gui-Wu Liu ◽  
Ming-Song Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Narrow Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Design Program ◽  
Band Pass ◽  
Coating Design ◽  
Interference Order ◽  
First Time ◽  
Good Agreement

First time study for development of relationship between design and fabrication of thin film narrow-pass filters simulated using the Essential Macleod optical coating design program and verified through experimental data. In thin film narrow band-pass filter's design, can design better filter by changing some parameters, but the theoretical designs are often difficult to achieve. The sensitivity of thin film narrow band-pass filters are mainly influenced by the refractive index of cavity layers, number of mirror layers, interference order and number of cavities. Based on analysis of all these aspects, laws of influence are obtained. A narrow band-pass filter with super wide rejection band was designed and fabricated to verify the simulation results, showing a good agreement between the experimental and theoretical observations.

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