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Proceedings Paper

Michelson interferometer in a 2D photonic crystal utilizing self-collimation effect
Author(s): Xiyao Chen; Yishen Qiu; Yufei Wang; Nan Lin; Guimin Lin; Hailian Hong; Bo Ni
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Paper Abstract

A Michelson interferometer (MI) constructed in a two-dimensional photonic crystal (2D PhC) utilizing self-collimation effect is proposed and investigated theoretically. The 2D PhC consists of a square lattice of air holes in silicon. It has square-shaped equal frequency contours (EFCs) in the frequency range of 0.26-0.275c/a for TE modes. The MI proposed consists of two PhC mirrors and one defect-row splitter. Light propagates between them employing self-collimation effect. The two interferometer branches have different path lengths L1 and L2. The FDTD calculation results show that the transmission spectrum from 0.26c/a to 0.275c/a at the MI output port is comb-shaped. The transmission peaks have a uniform spacing. Moreover, the peaks shift to the lower frequencies and the peak spacing decreases when the difference between L1 and L2 is increased. For the operating wavelength around 1550nm, the dimensions of this MI are only tens of microns. So this PhC Michelson interferometer may be applied in future photonic integrated circuits.

Paper Details

Date Published: 28 November 2007
PDF: 6 pages
Proc. SPIE 6834, Optical Design and Testing III, 68343I (28 November 2007); doi: 10.1117/12.757644
Show Author Affiliations
Xiyao Chen, Minjiang Univ. (China)
Yishen Qiu, Fujian Normal Univ. (China)
Yufei Wang, Fujian Normal Univ. (China)
Nan Lin, Minjiang Univ. (China)
Guimin Lin, Minjiang Univ. (China)
Hailian Hong, Fujian Normal Univ. (China)
Bo Ni, Fujian Normal Univ. (China)

Published in SPIE Proceedings Vol. 6834:
Optical Design and Testing III
Yongtian Wang; Theo T. Tschudi; Jannick P. Rolland; Kimio Tatsuno, Editor(s)

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