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本文描述了一种可调滤光器,这种可调滤光器,在双折射电光晶体的寻常偏振光与异常偏振光之间于相位匹配波长下利用空间周期直流电场耦合光能.本文描述的一个具体装置是一片LiTaO_3置于近交的偏振片间用横向电场工作,引用(?)olc的双折射滤光器及Harris声光滤光器进行摸拟,这种电光滤光器是经由分离的可寻址的指状电极列阵来改变电场的空间周期而进行调谐.美国已演示的可调谐性从4,700埃至4.5微米透射实验的结果与外加电压的关系和带宽与通过波长的关系和理论很一致.着重指出了这类电子滤光器的灵活性有可能通过非周期电压分布来合成任意传递函数.
In this paper, an adjustable filter is described that utilizes a spatial periodic DC electric field to couple optical energy between a normally-polarized light and an anomalously-polarized light of a birefringent electro-optic crystal at a phase-matching wavelength. A specific device is a piece of LiTaO_3 placed between the in-plane polarizers working with a transverse electric field, reference (?) Olc birefringent filter and Harris acousto-optic filter simulation, the electro-optical filter is via Separated addressable array of finger electrodes to change the spatial period of the electric field for tuning Tuning the United States has demonstrated the tunability from 4,700 angstroms to 4.5 microns transmittance test results and applied voltage and the relationship between the bandwidth and the pass wavelength In keeping with the theory, it is emphasized that the flexibility of such electronic filters makes it possible to synthesize arbitrary transfer functions through acyclic voltage distribution.