Double layers liquid-crystal microlens arrays used in optical switches

Cheng Wang; Di Fan; Bo Zhang; Qing Tong; Jun Luo; Yu Lei; Xinyu Zhang; Changsheng Xie

doi:10.1117/12.2205312

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17 December 2015 Double layers liquid-crystal microlens arrays used in optical switches

Cheng Wang, Di Fan, Bo Zhang, Qing Tong, Jun Luo, Yu Lei, Xinyu Zhang, Changsheng Xie

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Proceedings Volume 9811, MIPPR 2015: Multispectral Image Acquisition, Processing, and Analysis; 98110B (2015) https://doi.org/10.1117/12.2205312
Event: Ninth International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2015), 2015, Enshi, China

Abstract

Based on our previous works in liquid-crystal microlens arrays (LCMAs), a new kind of optical switches using the 24×24 fiber arrays coupled with the LCMAs, which have a key dual-mode function of the switches about on and off state and work in visible and infrared range, is proposed and fabricated in this paper. Different with other common LCMAs, this new kind of dual-mode LCMAs includes two layers of control electrodes deposited directly over the surface of the top glass substrate in LC microcavity fabricated. The first layer is the patterned electrode, which is designed into basic circular holes with suitable diameter, and the second is the planar electrode. Both layered electrodes are effectively separated by a thin SiO₂ film with a typical thickness of about several micrometers, and then the dual-mode microlenses are driven by applied electrical signals with different root mean square (rms) voltage.

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Cheng Wang, Di Fan, Bo Zhang, Qing Tong, Jun Luo, Yu Lei, Xinyu Zhang, and Changsheng Xie "Double layers liquid-crystal microlens arrays used in optical switches", Proc. SPIE 9811, MIPPR 2015: Multispectral Image Acquisition, Processing, and Analysis, 98110B (17 December 2015); https://doi.org/10.1117/12.2205312

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