CAJ | 학술논문

制备了一种新型光栅器件，它在制备体系中加入一定比例的液晶材料，使器件制备方法简单、体积小、响应速度快，而且具有衍射特性的电场可调性，在光通信领域有很好的应用前景。首先通过分析光栅的形成机理，指出了只有当液晶和光敏单体的扩散、成核和凝胶三个过程得到最佳匹配状态，才能形成比较理想的光栅器件，本文选用了两种丙烯酸酯单体作为反应体系，分别为五官能度的DPHPA和双官能度的PDDA，它们以1∶1的比例均匀混合，，同时在体系中添加少量的光引发RB、共引发剂NPG，采用一次全息曝光的方法，制备了衍射效率高达98.1%的液晶光栅。而且，此器件的透射光强度可以随着外加电场的变化而连续变化，能够在传输信道中实时改变和控制光信号的强弱，因此这种新型液晶光栅无源光通信器件方面具有巨大的潜在生产力。
제비료일충신형광책기건，타재제비체계중가입일정비례적액정재료，사기건제비방법간단、체적소、향응속도쾌，이차구유연사특성적전장가조성，재광통신영역유흔호적응용전경。수선통과분석광책적형성궤리，지출료지유당액정화광민단체적확산、성핵화응효삼개과정득도최가필배상태，재능형성비교이상적광책기건，본문선용료량충병희산지단체작위반응체계，분별위오관능도적DPHPA화쌍관능도적PDDA，타문이1∶1적비례균균혼합，，동시재체계중첨가소량적광인발RB、공인발제NPG，채용일차전식폭광적방법，제비료연사효솔고체98.1%적액정광책。이차，차기건적투사광강도가이수착외가전장적변화이련속변화，능구재전수신도중실시개변화공제광신호적강약，인차저충신형액정광책무원광통신기건방면구유거대적잠재생산력。
A novel liquid crystal grating device with high diffraction efficiency was investigated in this paper. The diffractive light intensity of liquid crystal grating can be modulated by electric field because of the electric control characteristics of liquid crystal. According to optical theories and formation mechanism of the grating, ideal grating can be obtained utilizing special recipe and technique, due to the diffusion, nucleation and gelation match between monomers and liquid crystals. Penta-functional dipentaerythritol hydroxyl pentaacrylate, di-functional phthalic diglycol diacrylate and nematic liquid crystal TEB30A were chosen in this paper. The diffraction efficiency can reach to 98.1%. The transmitted light intensity of the liquid crystal grating can be continuously variable under the effect of an external electric field. So that, the light power of transmission signals in the communication channel can be adjusted according to the requirement. Consequently, the liquid crystal grating has immense potential productivity in passive optical communication device such as optical switching and variable optical attenuator.