optical modulation

The intermodulation distortion and SNR of both the conventional Intensity Modulation ( IM) system and a novel Standing Wave Acousto-Optical Modulation ( SWAOM) system were demonstrated theoretically and experimentally in this paper.

本文从理论与实验上论证了光纤通讯光强调制（IM）和新型驻波声光调制（SWAOM）系统中的互调制信号失真与畸变以及信噪比。

Design of the Optical Modulation Index for External Modulator

外调制器光调制指数的设计

The Study on Tunning Range of All Optical Modulation Wavelength Conversion Based on FBG-ECL

FBG-ECL实现全光波长转换调谐范围的研究

The analytic results on system CNR ( Carrier-Noise-Rate) and the computer simulation show that the system CNR can be improved greatly by utilizing the wavelength controlling and increasing the optical modulation index.

仿真结果表明，通过实施波长控制技术和增加光调制指数等措施，可以有效提高系统载噪比。

Thus , electro-optical modulation is one of the effective technologies to improve the ali.

结果表明, 使用电光调制技术可有效提高投影光刻的对准精度.

Meanwhile, the testing methods of spatial light modulator also provide value for the performance test of other optical modulation devices.

同时空间光调制器性能的测试方法对于光学调制器件性能的测试具有参考价值。

Under a certain deliver distance and the light power, the different sub-carries number to exist a best optical modulation index, making the system's carrier-to-noise ratio biggest.

一定的传输距离和发射光功率情况下，不同的子载波数存在一个最佳的光调制指数，使得系统载噪比最大；

It is found that the sensor tip with a 90 ° conical tip has the maximum optical modulation depth.

理论和实验的结果表明，顶角处于90°左右的光纤尖具有最大的光调制深度。