摘要
文报道了ＧａＡｓ１×２ＭＺ波导开关／调制器的研究结果，并分析了该器件的工作原理．这种器件利用Ｙ分支作为３ｄＢ耦合器，非对称Ｘ结作为干涉器．在波长１．１５μｍ下测试，得到了串音比小于－１６ｄＢ和开关电压１９Ｖ的开关特性．预计该器件可广泛应用于ＧａＡｓ１×。开关列阵及高速光调制等方面．
Abstract The first GaAs 1 X 2 Mach-Zehnder waveguide switch modulator is reported,and the mechanism of the device is analyzed. In this device, a Y-branch cgupler isused at input side, and a asymmetic X-junction at output one. The characteristicof the estinict ratio of -16dB and a switching voltage of 19V are achieved at an ope rating wavelength of 1.15um. It is shown that this device could be applied to 1 Xnswitching array and high-speed modulation.
基金
国家自然科学基金
关键词
波导开关
调制器
集成光学器件
Integrated optics
Light modulators
Optical switches
Optical waveguides
Semiconducting gallium compounds
