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Optical Engineering

Investigation of a novel wide-spectrum polymer electro-optic switch with high extinction ratio over 40 dB covering S-C-L band
Author(s): Chuan-Tao Zheng; Liang Lei; Qiang Song; Xin Yan; Chunsheng Ma; Da-Ming Zhang; Zhanchen Cui
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Paper Abstract

A novel kind of wavelength-insensitive wide-spectrum polymer electro-optic (EO) switch is proposed by employing two symmetric active Mach-Zehnder interferometers (MZIs), a passive middle directional coupler and a pair of passive phase-generating couplers. Extinction ratio compensation condition under off-state and insertion loss compensation condition under on-state are derived to expand wavelength spectrum. With sufficient consideration of the wavelength dispersion of material and waveguide, optimization, and simulation were performed. The switch exhibits a switching voltage of 4.96 V with each MZI EO region length of 5000 μm. An S-C-L band (1460 to 1625 nm) covering a wide-spectrum more than 165 nm was obtained, and within this range, an extremely high extinction ratio more than 40 dB and an insertion loss within 1.8 to 11.9 dB were reached. This spectrum was more than 8 times of that of the traditional MZI EO switch (only 20 nm).The proposed device can function normally at any wavelength, and is an ideal candidate for a broadband photonic switching element in next-generation nonwavelength selective optical networks-on-chip.

Paper Details

Date Published: 18 July 2012
PDF: 11 pages
Opt. Eng. 51(7) 074603 doi: 10.1117/1.OE.51.7.074603
Published in: Optical Engineering Volume 51, Issue 7
Show Author Affiliations
Chuan-Tao Zheng, Jilin Univ. (China)
Liang Lei, Jilin Univ. (China)
Qiang Song, Jilin Univ. (China)
Xin Yan, Jilin Univ. (China)
Chunsheng Ma, Jilin Univ. (China)
Da-Ming Zhang, Jilin Univ. (China)
Zhanchen Cui, Jilin Univ. (China)

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