Transmission Characteristic Simulation of High Frequency Acousto-Optic Modulators

• 作者: Lubaba Abdul Kareem Al-Janabi Soror A. Mahdi Suha Mousa Alawsi
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: ACOUSTO-OPTIC TRANSMISSION of AO MODULATOR High Frequency AOM Crystal Material of AOM DIFFRACTION Efficiency of AOM
• 年，卷（期）: 2018,（4）
• 页码范围: 98-110
• 页数: 13页
• 分类号: R73

摘要

The way by which one can make sure the operating mode of the modulation is by observing the Comsol results of the designed model of proposed acousto-optic modulator (AOM). These results include the pressure distribution, sound pressure distribution, stress distribution at piezoelectric, far-field analysis that describes the diffracted light orders, and electric potential versus light frequency. Throughout the simulating process of modulator operating using Comsol, it begins when the RF is power by a voltage of 100 V, the light is then split into first ordered diffraction, which implies that the modulator is in the operating mode. The use of semiconductor materials is due to its smaller gap that easily transfers the energy that leads to generating first order diffraction when they provided a voltage power. It mentioned that zero order diffraction indicates the modulator does not run;other orders are appearing with increasing the frequency of light leading to decrease of the efficiency of the modulator performance.