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Proceedings Paper

Simulation of optical devices using parallel finite-difference time-domain method
Author(s): Kang Li; Fanmin Kong; Liangmo Mei; Xin Liu
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Paper Abstract

This paper presents a new parallel finite-difference time-domain (FDTD) numerical method in a low-cost network environment to stimulate optical waveguide characteristics. The PC motherboard based cluster is used, as it is relatively low-cost, reliable and has high computing performance. Four clusters are networked by fast Ethernet technology. Due to the simplicity nature of FDTD algorithm, a native Ethernet packet communication mechanism is used to reduce the overhead of the communication between the adjacent clusters. To validate the method, a microcavity ring resonator based on semiconductor waveguides is chosen as an instance of FDTD parallel computation. Speed-up rate under different division density is calculated. From the result we can conclude that when the decomposing size reaches a certain point, a good parallel computing speed up will be maintained. This simulation shows that through the overlapping of computation and communication method and controlling the decomposing size, the overhead of the communication of the shared data will be conquered. The result indicates that the implementation can achieve significant speed up for the FDTD algorithm. This will enable us to tackle the larger real electromagnetic problem by the low-cost PC clusters.

Paper Details

Date Published: 5 December 2005
PDF: 8 pages
Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60192D (5 December 2005); doi: 10.1117/12.635830
Show Author Affiliations
Kang Li, Shandong Univ. (China)
Fanmin Kong, Shandong Univ. (China)
Liangmo Mei, Shandong Univ. (China)
Xin Liu, North Dakota State Univ. (United States)

Published in SPIE Proceedings Vol. 6019:
Passive Components and Fiber-based Devices II
Yan Sun; Jianping Chen; Sang Bae Lee; Ian H. White, Editor(s)

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