18 July 2012 Investigation of a novel wide-spectrum polymer electro-optic switch with high extinction ratio over 40 dB covering S-C-L band
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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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Chuan-Tao Zheng, Chuan-Tao Zheng, Liang Lei, Liang Lei, Qiang Song, Qiang Song, Xin Yan, Xin Yan, Chunsheng Ma, Chunsheng Ma, Da-Ming Zhang, Da-Ming Zhang, Zhanchen Cui, Zhanchen Cui, } "Investigation of a novel wide-spectrum polymer electro-optic switch with high extinction ratio over 40 dB covering S-C-L band," Optical Engineering 51(7), 074603 (18 July 2012). https://doi.org/10.1117/1.OE.51.7.074603 . Submission:


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