华东师范大学学报(自然科学版) ›› 2007, Vol. 2007 ›› Issue (3): 107-113.

• 物理学 电子学 • 上一篇    下一篇

聚合物分散液晶全息光栅红外波段电光调制的特性

忻昭辉1, 蔡继光1, 沈国土1, 杨宝成1,郑继红2, 顾玲娟2
  

  1. 1. 华东师范大学 物理系，光谱学与波谱学教育部重点实验室，上海 200062;2. 上海理工大学 光学与电子信息工程学院，上海 200093
  • 收稿日期:2006-02-03 修回日期:2006-06-14 出版日期:2007-05-25 发布日期:2007-05-25
  • 通讯作者: 蔡继光

Infrared Electro Optical Property of Holographic Polymer Dispersed Liquid Crystal Grating (Chinese)

XIN Zhao-hui1， CAI Ji-guang1， SHEN Guo-tu1， YANG Bao-cheng1，ZHENG Ji-hong1， GU Ling-juan1
  

  1. 1. Key Laboratory for Optical and Magnetic Resonance Spectroscopy，Ministry of Education, Department of Physics，East China Normal University，Shanghai 200062, China;2. College of Optics and Electronics Engineering，University of Shanghai for Science and Technology，Shanghai 200093, China
  • Received:2006-02-03 Revised:2006-06-14 Online:2007-05-25 Published:2007-05-25
  • Contact: CAI Ji-guang

摘要： 研究了聚合物分散液晶全息光栅在1 550 nm红外通信波段的电光调制特性，定性分析了不同驱动电压和不同频率的调制电场在红外波段上对聚合物弥散液晶全息光栅衍射效率和透射效率的影响.通过电介质理论，解释了交变调制电场的频率会改变聚合物弥散液晶全息光栅的介电常数，从而对电光调制的效果产生影响；验证了聚合物弥散液晶全息光栅作为红外光通信掺铒光纤放大器增益均衡器的可行性.

关键词: 聚合物分散液晶全息光栅, 电可调控布拉格光栅, 红外, 光通信, 聚合物分散液晶全息光栅, 电可调控布拉格光栅, 红外, 光通信

Abstract: Experiments were performed to research the electrooptical characteristics of holographic polymer dispersed liquid crystal (HPDLC) at 1 550 nm. Results showed that the frequency and amplitude of the applied field impact the
diffraction efficiency and transmission efficiency of HPDLC greatly. The theory
of dielectric matters was used to explain the relationship between the
applied field frequency and the dielectric constant and how it influences the
effect of electrooptical modulation of the HPDLC. It was proved that the HPDLC devices are potentially useful for Erbium doped fiber amplifiers as a
tunable gain equalizer.

Key words: electric switchable bragg grating, infrared, optical communication , holographic dispersed liquid crystal grating, electric switchable bragg grating, infrared, optical communication

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