Finite element analysis of a variable optical attenuator based on s-shape polymer waveguide

Jing Wan; Lingxun Wu; Fenglan Xue; Jian Hu; Yanjun Fu; Wei Zhang; Fangren Hu

doi:10.1117/12.2228936

26 January 2016 Finite element analysis of a variable optical attenuator based on s-shape polymer waveguide

Jing Wan, Lingxun Wu, Fenglan Xue, Jian Hu, Yanjun Fu, Wei Zhang, Fangren Hu

Proceedings Volume 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015; 97960X (2016) https://doi.org/10.1117/12.2228936
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held November 2015, 2015, Various, China

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.

Citation Download Citation

Jing Wan, Lingxun Wu, Fenglan Xue, Jian Hu, Yanjun Fu, Wei Zhang, and Fangren Hu "Finite element analysis of a variable optical attenuator based on s-shape polymer waveguide", Proc. SPIE 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015, 97960X (26 January 2016); https://doi.org/10.1117/12.2228936

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