1) broadband modulation
宽带调制
1.
The relationship between the parameters and the modulation characteristics is obtained from selecting by simulation the proper thickness of the electrodes and buffer layer,optimizing the modulator performance and realizing broadband modulation.
利用扩展点匹配方法对厚电极厚缓冲层的共面波导电光调制器的结构和性能参数进行了分析和研究,通过仿真选择合适的电极厚度和缓冲层厚度,所得的特性阻抗和有效折射率与采用保角变换法得到的结果吻合,优化了调制器性能,实现了宽带调制。
2) bandwidth modulation
带宽调制
1.
The temperature-insensitive fiber Bragg grating(FBG) dynamic pressure sensing based on reflection spectrum bandwidth modulation and differential optical power detection is proposed and experimentally demonstrated.
报道了基于光纤光栅反射谱带宽调制和光强差分检测技术实现单一光纤光栅温变不敏感动态压力传感的新方法。
2.
The temperature-independent fiber Bragg grating(FBG) displacement measurement based on optical reflection spectrum bandwidth modulation and differential optical power detection is proposed and experimentally demonstrated.
报道了利用反射谱带宽调制和光强差分探测技术实现单一光纤光栅温变无补偿位移精确测量的新方法。
3) modulation bandwidth
调制带宽
1.
The results indicate that strong injection is able to enlarge response frequency and modulation bandwidth to a certain extent,but also suppresses modulation gain.
结果表明,强光注入在一定程度上增大了谐振频率和调制带宽,但是抑制了响应增益,通过增大偏置电流加以补偿,才能获得理想的响应增益和带宽;并且外光注入大大降低了低频调制时的频率啁啾。
2.
The parasitic capacitance of the high speed laser is one of those factors which affect the modulation bandwidth.
高速激光器的寄生电容是影响其调制带宽的因素之一。
3.
The emphasis is put on high-speed quantum well lasers with wide modulation bandwidth, and high-speed PIN photodetectors with high collection efficiency.
介绍用于雷达的高速半导体激光器和探测器的特性 ,综述了这类器件的研究进展 ,重点讨论具有高的调制带宽的高速量子阱激光器和具有高的收集效率的高速PIN光电探测器。
4) broadband optical modulation
宽带光调制
5) modulation bandwidth
调制带宽度
补充资料：宽带和窄带业务
宽带业务是相对窄带业务而言的，一般来说，对于速率低于2Mb/s的通信业务统称窄带业务，如电话网、N-ISDN所提供的业务。对于高于2Mb/s的通信业务，如帧中继业务、视频点播、ATM业务、TV会议等称为宽带通信业务。 目前投入应用的宽带接入技术主要有两种：ADSL和FTTX＋LAN。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条