A Study on Topology Optimization of Optical Circuits Consisting of Multi-Materials

A topology optimization method can be used to find out the optical waveguide structures which have the desired transmission characteristics. Using the function expansion method, we can avoid the problem of a gray area, which means that some areas having intermediate refractive index between those of...

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Bibliographic Details
Published in:Journal of lightwave technology 2012-07, Vol.30 (13), p.2210-2215
Main Authors: Fujimoto, Kota, Tsuji, Y., Hirayama, K., Yasui, T., Sato, S., Kijima, R.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Finite element method
Finite element methods
Information, signal and communications theory
Integrated optics. Optical fibers and wave guides
Materials
Optical and optoelectronic circuits
Optical devices
optical waveguide circuit
Optical waveguides
Optimization
Refractive index
Signal and communications theory
Signal representation. Spectral analysis
Signal, noise
Telecommunications and information theory
Topology
topology optimization method
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Summary:A topology optimization method can be used to find out the optical waveguide structures which have the desired transmission characteristics. Using the function expansion method, we can avoid the problem of a gray area, which means that some areas having intermediate refractive index between those of usable materials appear in a design region. However, so far, topology optimization has mainly been studied for structures consisting of two isotropic materials. In this paper, we study the applicability of topology optimization to structures which include three or more materials, and demonstrate the optimal design of a waveguide crossing.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2012.2195474