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Proceedings Paper

Finite element analysis of a variable optical attenuator based on s-shape polymer waveguide
Author(s): Jing Wan; Lingxun Wu; Fenglan Xue; Jian Hu; Yanjun Fu; Wei Zhang; Fangren Hu
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Paper Abstract

A variable optical attenuator (VOA) based on S-shape polymer waveguide is demonstrated at the wavelength λ = 1.55 micron. The VOA consists of straight input and output waveguides, an S-shape waveguide and a pair of deposited electrodes. The cladding material of S waveguide is Poly (methyl methacrylate/disperse red 1) (PMMA/DR1) and the core material of S waveguide is SiON. The refractive index of the polymer cladding at S waveguide is modified by the applied electric voltage. Light scatters at the S waveguide and the VOA has large energy loss in the original state at voltage-off. In the voltage-on state, the refractive index of the polymer of the S waveguide reduces, and energy loss changes as the voltage increases. The attenuation of the VOA can be controled and adjusted by the applied voltage. The beam propagation method(BPM) and finite element analysis are employed to simulate and analyse the VOA. The results show that the VOA has large variable attenuation range of 45.2dB and low insertion loss of 0.8dB.

Paper Details

Date Published: 26 January 2016
PDF: 6 pages
Proc. SPIE 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015, 97960X (26 January 2016); doi: 10.1117/12.2228936
Show Author Affiliations
Jing Wan, Nanjing Univ. of Posts and Telecommunications (China)
Lingxun Wu, Nanjing Univ. of Posts and Telecommunications (China)
Fenglan Xue, Nanjing Univ. of Posts and Telecommunications (China)
Jian Hu, Nanjing Univ. of Posts and Telecommunications (China)
Yanjun Fu, Nanjing Univ. of Posts and Telecommunications (China)
Wei Zhang, Nanjing Univ. of Posts and Telecommunications (China)
Fangren Hu, Nanjing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 9796:
Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015
Weimin Bao; Yueguang Lv, Editor(s)

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