Fig. 1. Structural diagram of OVNA delay measurement link based on optical double sideband modulation

Fig. 2. Structural diagrams of silicon based optical switching delay line chip and modules. (a) Structural diagram of 5-bit optical switching delay line; (b) structural diagram of alignment waveguide; (c) mask layout of delay line chip; (d) picture of chip coupling package module

Fig. 3. Delay measurement results of OVNA delay test link, alignment waveguide and delay line. (a) Relation between delay fluctuation and GRF; (b) relation between standard deviation of delay fluctuation and GRF

Fig. 4. Transmission spectra of OVNA delay test link, alignment waveguide and delay line near wavelength of 1560 nm

Fig. 5. Delay measurement results of 5-bit silicon based optical switching delay line chip. (a) Relative delay values of 32 delay states; (b) standard deviations of delay fluctuations of 32 delay states