Key indicators of fibre optic delay lines

In the fibre-optic delay line, the main technical indicators of the input part are input signal size, dynamic range, operating frequency, bandwidth, amplitude, phase, input VSWR; the main technical indicators of the output part are operating frequency, delay time, accuracy, noise figure, loss, voltage VSWR, amplitude-phase consistency. In addition, there are some external indicators, such as operating temperature, humidity, three anti-protection features, storage temperature, interface form, power supply form. 1, the operating frequency: can cover the P / L / S / C / X / K band. 2, flux loss: the ratio of input signal power to output signal power. These losses are mainly limited by the quantum effect of the laser and photodetector. 3, delay time: delay time is mainly determined by the length of the fibre. 4, dynamic range: is the ratio of the output maximum signal and the minimum signal, the maximum signal power P is subject to the maximum input excitation to the laser (corresponding to the saturation amount of 80% of the amplitude modulation) and the laser overload power limitations. 5, harmonic suppression: the root cause of harmonic generation is due to the nonlinear load. When the current flows through the load, and the applied voltage is not linear, the formation of non-sinusoidal current, thus generating harmonics. Harmonic pollution on the power system is a serious harm, take response measures to inhibit to reduce its harm, this is harmonic suppression.