Fig. 1. Schematic of basic structure of coherent combining

Fig. 2. Principle block diagram of OPLL system

Fig. 3. Influence of parameter T on E[ΓUo1Uo2(s)]

Fig. 4. Influence of σc2 on E[ΓUo1Uo2(s)](σ12=σ22=2 MHz)

Fig. 5. Influence of Δσ2 on E[ΓUo1Uo2(s)](T=10 ns, σ12=2 MHz, σc2=20 kHz)

Fig. 6. Influence of Δσ2 on E[ΓUo1Uo2(s)] when T is different. (a) T=1 ns; (b) T=10 ns; (c) T=100 ns; (d) T=1000 ns

Fig. 7. M changes with Δσ2 at different T values