| 摘要 |
A method and apparatus for measuring characteristics in an electromagnetic or optical system. A modulation signal is provided to a device under test to provide a first signal and to a reference device which provides a second signal, and a time domain optical analyzer measures the transitions of the first signal and the transitions of the second signal to determine characteristics of the device under test. In one embodiment, the characteristics of the reference device are determined with a modulated light source having two or more known wavelengths that provides a first signal, and a second signal is provided to a reference device to create a third signal. A time domain optical analyzer measures the transitions of the first signal and the transitions of the third signal for two or more wavelengths to determine reference device signal delay time characteristics as a function of wavelength. |
