In this case, the OSSR and RFSSR are 42 dB and 34 dB, respectively, and they are approximately identical to the values in Figure 2.
The power of the second-order sideband is maximum, and the OSSR exceeds 26 dB, as shown in Figure 4(a).
Compared with the case of [DELTA][phi] = 45[degrees], the undesired optical sidebands are further suppressed, the OSSR is as much as 32 dB and the RFSSR is 33.
Investigation the Effect of Non-ideal Parameters on OSSR for B-T-B Case
Initially, the OSSR can be unlimited, but in real systems, non-ideal factors contribute to a finite value.
The highest OSSR can be obtained for a phase difference near the ideal value.
Effect of Nonideal RF-driven Voltage and Phase Difference on OSSR and RFSSR for B-T-B
Initially, the OSSR can be infinite, but in real systems, non-ideal factors contribute to a finite value: (1) the phase shift may deviate from 180[degrees] between the two RF-driven signals applied to MZMs; and (2) the RF-driven voltage may deviate from its desired value.
The impact of the non-ideal drive voltage of RF-driven signal on OSSR and RFSSR is shown in Fig.
The OSSR and RFSSR can respectively be higher than 39 and 35 dB when the extinction ratio is 25 dB.
This is because of the high OSSR of the proposed scheme.
The simulation results show that a 60 GHz millimeter-wave can be generated from a 15 GHz RF oscillator with an OSSR as high as 40 dB and an RFSSR exceeding 35 dB without any optical or electrical filter when the extinction ratio of the MZM is 25 dB.