首页>
外国专利>
Electrical modulator driver circuit for generating multi-level drive signals for QAM optical transmission
Electrical modulator driver circuit for generating multi-level drive signals for QAM optical transmission
展开▼
机译:电调制器驱动器电路,用于生成用于QAM光传输的多级驱动信号
展开▼
页面导航
摘要
著录项
相似文献
摘要
An apparatus and methods for generating multi-level output signals for use by an optical modulator are provided. The apparatus comprises a plurality of input signal lines each configured to receive a binary input signal, an output signal line and a plurality of amplifier stages. The amplifier stages are each connected between one of the input signal lines and the output signal line so as to each produce an output voltage on the output signal line of either a first level or a second level. The level of the output voltage is based on the binary signal at the respective input signal line, and the output voltages of the respective plurality of amplifier stages collectively produce a summed analog output voltage on the output signal line at two or more different levels each configured to drive an optical modulator.
展开▼