Journal ArticleDOI
Fuzzy model for fabricating planar gratings
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TLDR
It is found that the application of fuzzy set theory in grating manufacturing reduces the cost of the process and improves the quality of the grating.Abstract:
In this paper a fuzzy model for fabricating planar-grating is given. In the model, the diffraction efficiency of the holographic grating (predicted by computer simulation) has a reasonable match with the experimentally verified results. The method can be summarized in three steps: first, a choice of the grating characteristics, which are closely related to the diffraction efficiency factors, is made; secondly, according to our experience, we construct the fuzzy matrix from the grating manufacturing parameters and the grating characteristics; finally, we use the fuzzy matrix composition to obtain the diffraction efficiency factors. Then, coupled wave theory is used to predict the diffraction efficiency. The comparisons between the results of this fuzzy model and experiments are given. It is found that the application of fuzzy set theory in grating manufacturing reduces the cost of the process and improves the quality of the grating.read more
Citations
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Journal ArticleDOI
Fuzzy theory applied in quality management of distributed manufacturing system: A literature review and classification
Lv Yaqiong,Lee Ka Man,Wu Zhang +2 more
TL;DR: This paper is the first academic literature review of the fuzzy theory applied in quality management of distributed manufacturing system, involves five most popular databases in this research area and covers more than 20 journals, and proposes a classification scheme using clustering analysis method.
Journal ArticleDOI
Dichromated gelatin hologram using digital image processing technology to optimize processing
TL;DR: In this article, a high efficiency diffraction hologram fabricated using digital image processing technology in dichromated gelatin (DCG) is described using a charge coupled device (CCD) camera and frame capture card.
Journal ArticleDOI
Digital image processing for evaluating the characteristics of the microstructure of a holographic plate
Chern-Sheng Lin,Rong Seng Chang +1 more
TL;DR: In this paper, a system of evaluating the microstructure of a holographic plate (for example; a light sensitive plate in dichromated gelatin (DCG) or photoresist emulsion) with economical measuring equipment is described.
Journal ArticleDOI
Computer analysis and fuzzy control for fabricating a plastic HOE with an injection method
TL;DR: Injection is an economical method of producing plastic holographic optical elements (HOEs) in large or small quantities and of various types and a computer-analysis system is used to simulate and control the results of the manufacturing system as mentioned in this paper.
References
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Book
Decision-making in a fuzzy environment
Richard Bellman,Lotfi A. Zadeh +1 more
TL;DR: A reverse-flow technique is described for the solution of a functional equation arising in connection with a decision process in which the termination time is defined implicitly by the condition that the process stops when the system under control enters a specified set of states in its state space.
Journal ArticleDOI
Coupled wave theory for thick hologram gratings
TL;DR: In this paper, a coupled wave analysis of the Bragg diffraction of light by thick hologram gratings is given, analogous to Phariseau's treatment of acoustic gratings and to the dynamical theory of X-ray diffraction.
Book
Fuzzy Sets, Uncertainty and Information
George J. Klir,Tina A. Folger +1 more
TL;DR: The fuzzy sets uncertainty and information is one book that the authors really recommend you to read, to get more solutions in solving this problem.
Journal ArticleDOI
Rigorous coupled-wave analysis of planar-grating diffraction
M. G. Moharam,Thomas K. Gaylord +1 more
TL;DR: In this article, a rigorous coupled-wave approach is used to analyze diffraction by general planar gratings bounded by two different media, and the analysis is based on a state-variables representation and results in a unifying, easily computer-implementable matrix formulation.
Journal ArticleDOI
The role of fuzzy logic in the management of uncertainty in expert systems
TL;DR: F fuzzy logic is suggested, which is the logic underlying approximate or, equivalently, fuzzy reasoning, which leads to various basic syllogisms which may be used as rules of combination of evidence in expert systems.
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