Mathematical model for the dynamics of an optical fiber viscometer

2006 ◽  
Author(s):  
Wei-Chih Wang ◽  
Joe Ho ◽  
Per G. Reinhall
Keyword(s):  
Mathematical Model ◽  
Optical Fiber

The Effect of the Broken Edge on the Concentricity of the Micro-Polished Optical Fiber End-Face

2013 ◽  
Vol 284-287 ◽  
pp. 2778-2783 ◽  
Author(s):  
Ying Chien Tsai ◽  
Guang Miao Huang ◽  
Jun Hong Chen ◽  
Shih Wei Chen
Keyword(s):  
Mathematical Model ◽  
Optical Fiber ◽  
Material Removal Rate ◽  
Tilt Angle ◽  
Material Removal ◽  
Removal Rate ◽  
Coupling Efficiency ◽  
Polishing Process ◽  
Laser Module ◽  
Micro Lens

The concentricity of the optical fiber micro lens affects the coupling efficiency of a laser module a lot. In this paper, the effect of the perpendicularity of the broken edge on the concentricity of the micro optical fiber end-face during the micro polishing process is studied. A mathematical model is derived to describe the variation of the material removal rate (MRR) when the tilt angles and amount of feed of the optical fiber are changed. An experiment is built to measure the concentricity of optical fiber with different tilt angles and feeds. The result shows that both of the dimensionless factor QAB and measured concentricity have the same tendency. The concentricity is better when the tilt angle is smaller and the amount of feed is larger. An improved polishing process is suggested. A good concentricity within 1μm can be achieved when fabricate the double-variable curvatures end-face of the optical fiber.

A Mathematical Model of a Non-uniform Micromechanical Deformation of an Optical Fiber Segment with an Axial Symmetric Surface Stressing

2019 ◽  
Vol 21 (6) ◽  
pp. 331-340
Author(s):  
I.L. Borysenkov ◽  
◽  
A.F. Fedechev ◽  
G.I. Leonovich ◽  
S.V. Kupriyanov ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Optical Fiber ◽  
Fiber Segment ◽  
Symmetric Surface

De Algorithm Optimization Design Research and Numerical Simulation of a New Optical Fiber F-P Sensing System

2013 ◽  
Vol 710 ◽  
pp. 484-487
Author(s):  
Ning Shan ◽  
Tuan Jie Liu
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Optical Fiber ◽  
Optimization Design ◽  
Design Research ◽  
Algorithm Optimization ◽  
Signal Attenuation ◽  
Practical Applications ◽  
Sensing System ◽  
De Algorithm

Optical fiber F-P sensor has several advantages, such as strong anti-interference ability, quick speed and high precision. It is widely applied in detecting fields. But optical fiber F-P sensor deviates from working point easily in practical applications, it leads to output signal attenuation and the decreasing of signal noise ratio. The double wavelength optical fiber F-P sensing system is designed to solve the problem. DE algorithm mathematical model of sensing system is established, meanwhile, a higher orthogonal precision sensing system is optimization designed. The orthogonal error of sensing system is studied. The results show that DE algorithm is correct and reliable. Its run time is shorter and the error is less than 10-3. The optimization objective decreases sharply. When the length of F-P cavity changes 0~2500nm, the orthogonal error of sensing system is less than 5%. It has higher stability and anti-interference ability. These results show that the DE algorithm can be used for the structural optimization design of optical fiber F-P sensor.

scholarly journals Effect of an Added Mass On the Vibration Characteristics for Raster Scanning of a Cantilevered Optical Fiber

2021 ◽  
Author(s):  
Kelli Kiekens ◽  
David Vega ◽  
Harrison Thurgood ◽  
Dominique Galvez ◽  
Davis McGregor ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Optical Fiber ◽  
Resonant Frequency ◽  
Optical Fibers ◽  
Added Mass ◽  
Measured Data ◽  
Intermediate Mass ◽  
Resonant Frequencies ◽  
Raster Scanning ◽  
Cantilevered Beam

Abstract Piezoelectric tube actuators with cantilevered optical fibers have enabled the miniaturization of scanning image acquisition techniques for endoscopic implementation. To achieve raster scanning for such a miniaturized system, the first resonant frequency should be on the order of 10's of Hz. We explore adding a mass at an intermediate location along the length of the fiber to alter the resonant frequencies of the system. We provide a mathematical model to predict resonant frequencies for a cantilevered beam with an intermediate mass. The theoretical and measured data match well for various fiber lengths, mass sizes, and mass attachment locations along the fiber.

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