IEC 62801:2020规定了适用于无线通信和广播系统中马赫-曾德尔光调制器的半波长电压的测量方法。此外，该方法对于Mach-Zehnder光调制器互调失真的估计也是有效的。该方法适用于以下情况: -频率范围:10MHz至30GHz； -波长带:0.8 μ m至2.0 μ m； -基于电光材料的Mach-Zehnder光调制器及其模块。

IEC 62801:2020 specifies a measurement method of half-wavelength voltage applicable to Mach-Zehnder optical modulators in wireless communication and broadcasting systems. In addition, this method is also effective for the estimation of the intermodulation distortion of Mach-Zehnder optical modulators. The method applies for the following:
– frequency range: 10 MHz to 30 GHz;
– wavelength band: 0,8 μm to 2,0 μm;
– electro-optic material based Mach-Zehnder optical modulators and their modules.