Design of Optical Circuit Devices Using Topology Optimization Method With Function-Expansion- Based Refractive Index Distribution

Tsuji, Yasuhidé; Hirayama, Koichi

doi:10.1109/lpt.2008.922921

Cited by 61 publications

(50 citation statements)

References 16 publications

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“…In order to obtain the optimal design directly from the desired characteristics, several optimization methods have been used, for example, genetic algorithm [12], topology optimization [13], and the WFM method [14][15][16][17]. The WFM method is the optimization algorithm based on the beam propagation method (BPM) [18,19], and the optimum index profiles are determined from the ideal output field.…”

Section: Design Of Mode Rotator Based On Wfm Methodsmentioning

confidence: 99%

PLC-Based LP₁₁ Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

Yamashita

Makino

Fujisawa

et al. 2017

IEEE Photon. Technol. Lett.

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Abstract-A compact and low-loss PLC-based mode rotator is proposed. The mode rotator with curved trench structure is designed based on the wavefront matching method, which is an optimization algorithm based on the beam propagation method. The proposed mode rotator is 45% in size (1.0 mm) and has lower loss (1/5) compared with the conventional structure that has a straight trench. Furthermore, the proposed mode rotator can achieve low mode crosstalk. Index Terms-Mode multi/demultiplexer, PLC, WFM method

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Section: Design Of Mode Rotator Based On Wfm Methodsmentioning

confidence: 99%

PLC-Based LP₁₁ Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

Yamashita

Makino

Fujisawa

et al. 2017

IEEE Photon. Technol. Lett.

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“…However, the problems at bends and junctions are even more severe than for photonic crystal waveguides in that the waves are no longer confined to the guide and additional in-plane scattering losses can occur. In [31,66,67] several different waveguiding structures were optimized and the cross-section of a ridge waveguide has also recently been topology optimized [68].…”

Section: Waveguidesmentioning

confidence: 99%

Topology optimization for nano‐photonics

Jensen

Sigmund

2010

Laser & Photonics Reviews

620

478

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Topology optimization is a computational tool that can be used for the systematic design of photonic crystals, waveguides, resonators, filters and plasmonics. The method was originally developed for mechanical design problems but has within the last six years been applied to a range of photonics applications. Topology optimization may be based on finite element and finite difference type modeling methods in both frequency and time domain. The basic idea is that the material density of each element or grid point is a design variable, hence the geometry is parameterized in a pixel-like fashion. The optimization problem is efficiently solved using mathematical programming-based optimization methods and analytical gradient calculations. The paper reviews the basic procedures behind topology optimization, a large number of applications ranging from photonic crystal design to surface plasmonic devices, and lists some of the future challenges in non-linear applications.

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“…Recently, topology optimization methods have begun to be used to realize high-performance optical waveguide devices [1][2][3][4]. The topology optimal design method of photonic devices using function expansion method for structural representation has been also proposed [5,6]. The function expansion method has advantages such as allowing a design with a high degree of freedom using a small number of design variables.…”

Section: Introductionmentioning

confidence: 99%

Design of polarization splitter and rotator using function-expansion based topology optimization considering two-layer structure

Tomioka

Tanaka

Tsuji

2019

JASSE

Self Cite

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Function expansion based topology optimization method for optical waveguide devices has been proposed as an automatic design method which can produce an optimal device structure having an arbitrary topology. In this paper, we aim to extend the function expansion based topology optimization method to the design problems of three-dimensional photonic devices with structural variation in the depth direction. We confirm the effectiveness of our approach through the design example of the polarization splitter and rotator which utilizes structural asymmetry in the depth direction.

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Design of Optical Circuit Devices Using Topology Optimization Method With Function-Expansion- Based Refractive Index Distribution

Cited by 61 publications

References 16 publications

PLC-Based LP₁₁ Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

PLC-Based LP₁₁ Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

Topology optimization for nano‐photonics

Design of polarization splitter and rotator using function-expansion based topology optimization considering two-layer structure

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Design of Optical Circuit Devices Using Topology Optimization Method With Function-Expansion- Based Refractive Index Distribution

Cited by 61 publications

References 16 publications

PLC-Based LP11 Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

PLC-Based LP11 Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

Topology optimization for nano‐photonics

Design of polarization splitter and rotator using function-expansion based topology optimization considering two-layer structure

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Product

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PLC-Based LP₁₁ Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method

PLC-Based LP₁₁ Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method