| 用于有线电视发射机的铌酸锂外调制器研究 |
| |
| 引用本文： | 华勇,孙雨南. 用于有线电视发射机的铌酸锂外调制器研究[J]. 光学技术, 2009, 35(3) |
| |
| 作者姓名： | 华勇 孙雨南 |
| |
| 作者单位： | 北京理工大学,光电工程系,北京,100081;北京世维通光通讯技术有限公司,北京,100738;北京理工大学,光电工程系,北京,100081 |
| |
| 摘 要： | 介绍了铌酸锂调制器在1550nm有线电视(CATV)外调制发射机中的功能及其结构,调制器集成了高频相位调制器、模拟强度调制器和无源3dB耦合器在同一芯片上。分析了CATV调制器的关键技术和解决方案,采用了新颖的非平行电极、磨凹芯片背面的结构和阻抗变换方案。设计制作的模拟强度调制器获得了优于±0.5dB平坦的响应和小于-20dB的电反射。基于工艺容差和BPM软件模拟优化设计的3dB耦合器使器件得到大于30 dB的开关消光比。
|
| 关 键 词： | 集成光学 铌酸锂 有线电视 调制器 |
Study on a LiNbO_3 external modulator for CATV transmitter |
| |
| HUA Yong,SUN Yu-nan. Study on a LiNbO_3 external modulator for CATV transmitter[J]. Optical Technique, 2009, 35(3) |
| |
| Authors: | HUA Yong SUN Yu-nan |
| |
| Affiliation: | 1.Dept.of Electro-optical Engineering;Beijing Institute of Technology;Beijing 100081;China;2.Beijing SWT Optical Communication Technology Co.;Ltd;Beijing 100738;China |
| |
| Abstract: | The functions and the structure of a LiNbO3 modulator for 1550nm CATV transmitter are presented.Several units including a high frequency phase modulator,an analog intensity modulator and a passive 3dB coupler,are integrated in one chip of the modulator.Some key techniques and the schemes about the CATV modulator are discussed.An analog modulator is developed using a non-parallel electrode and a concave backside configuration and impedance transform technique.This modulator exhibits good flat response which ... |
| |
| Keywords: | integrated optics LiNbO3 CATV modulator |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
