A design of reflection-type polarization control device using ferroelectric liquid crystals
A design of reflection-type polarization control device using ferroelectric liquid crystals
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一种铁电液晶反射式偏振控制器件的设计
DOI：
10.1002/ecjb.10038
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
T. Nakagami
中科院分区：
文献类型：
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作者：
Noriyuki Ogawa;K. Machida;Yusuke Okada;T. Nakagami
作者提出的用于光通信网络的平面偏振控制光开关，需要一种反射型液晶偏振控制器件（PCD），该器件能使入射波在背面全反射后向入射方向发射，并能根据外加电压精确地将光波的偏振方向切换90°。作者已经推导并报道了一种斜入射铁电液晶偏振控制器件（FLC-PCD）偏振方向精确切换的设计理论，其中光波以任意角度斜入射到器件表面并传输到背面。本文在此理论的基础上，利用Jones矩阵理论分析了反射型FLC-PCD器件的偏振控制特性，其中入射波在器件背面被完全反射并返回到入射侧。导出了输出波偏振方向精确切换90°的条件。在此基础上，提出了液晶层厚度和液晶光轴角的最佳设计值的推导方法。对试验装置的偏振控制特性进行了测量，验证了设计方法的有效性。©2003 Wiley期刊公司电子工程学报，2004,31 (1):393 - 393；在线发表于Wiley InterScience （www.interscience.wiley.com）。DOI 10.1002 / ecjb.10038
For a planar polarization control optical switch proposed by the authors for optical communication networks, a reflection-type liquid crystal polarization control device (PCD) that can emit the incident wave in the same direction as the incident after totally reflected on the back side and can accurately switch the polarization direction of the optical wave by 90° in response to an applied voltage is needed. The authors have previously derived and reported a design theory for accurate switching of the polarization direction for an obliquely incident ferroelectric liquid crystal polarization control device (FLC-PCD) in which the light wave is obliquely incident upon the device surface at an arbitrary angle and transmits to the back side. In the present paper, based on this theory, the polarization control characteristics are theoretically analyzed by means of the Jones matrix with respect to the reflection-type FLC-PCD, in which the incident wave is totally reflected at the back side of the device and is returned to the incident side. The condition for accurate switching of the polarization direction of the output wave by 90° is derived. Based on this condition, a method for derivation of the optimum design values of the liquid crystal layer thickness and liquid crystal optical axis angle is presented. The polarization control characteristics of the device fabricated for trial are measured, demonstrating the validity of the present design method. © 2003 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 87(1): 43–53, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.10038
使用铁电液晶偏振控制器件的 4×4 光开关的开关特性
DOI：
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发表时间：
2007
期刊：
Digest of the Micro Optics Conference 2007 H50
影响因子：
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作者：
K. Nakatsuhara;et. al.
通讯作者：
et. al.