Fig. 1. Principle diagram of WSS based on LCOS technology

Fig. 2. (a) Principle diagram of polarization conversion crystal; (b) working principle diagram of LCOS unit

Fig. 3. Schematic of testing system for time-frequency property of WSS

Fig. 4. (a) Allan deviation (ADEV) of frequency signal and (b) time delay of time signal for different ports

Fig. 5. (a) ADEV of frequency signal and (b) time delay of time signal under different attenuation ratios for same port

Fig. 6. (a) ADEV of frequency signal and (b) time delay of time signal under different polarizations for same port

Fig. 7. (a) Phase fluctuation of 300 MHz frequency signal; (b) propagation delay fluctuation of 1PPS time signal

Fig. 8. (a) ADEV of frequency signal; (b) TDEV of 1PPS time signal

Fig. 9. (a) Phase fluctuation of frequency signal; (b) time delay fluctuation of time signal