Research on multi-aperture receiving characteristics of optical transmission based on composite phase plate

Fig. 2. Numerical and analytic fitting curves of composite phase screen structure function

Fig. 3. Comparison between theoretical structure function of atmospheric turbulence, phase plate structure function of power spectrum inversion method and structure function of composite phase plate

Fig. 4. Gaussian spots through composite phase screen

Fig. 5. Relationship between different receiving aperture diameters corresponding to intensity scintillation

Fig. 6. Relationship between different receiving aperture spacing corresponding to intensity scintillation

Fig. 7. Intensity scintillation values of different number of receiving apertures at different heights of $C_{n}^{2}$

Fig. 8. Relationship between number of receiving aperture n=1 and intensity scintillation under different light wavelengths

Fig. 9. Relationship between number of receiving aperture n=3 and intensity scintillation under different light wavelengths

Fig. 10. Relationship between number of receiving aperture n=5 and intensity scintillation under different light wavelengths

Fig. 11. Relationship of receiving aperture number n=1 corresponding to intensity scintillation at different transmission distances

Fig. 12. Relationship of receiving aperture number n=3 corresponding to intensity scintillation at different transmission distance

Fig. 13. Relationship of receiving aperture number n=5 corresponding to intensity scintillation at different transmission distances

Fig. 14. Diagram of experimental device

Fig. 15. Receiving light spots under different turbulence intensities

Fig. 16. Relationship of intensity scintillation corresponding to different receiving aperture diameters when number of receiving aperture n=4

Fig. 17. Relationship of intensity scintillation corresponding to different receiving aperture spacing when number of receiving aperture n=4

Table 1. Numerical simulation parameters

Table 1. Numerical simulation parameters

Parameter	Value
Wavelength $λ$ / nm	1000
Propagation length L / m	8×10⁴
Height h / km	0.8
Wind speed v / m.s⁻¹	32
Inner scale l₀/ m	0.001
Outer scale L₀/ m	inf
Number of intervals in split-step beam propagation method nscr	11
Interval length in split-step beam propagation method z / m	8×10³

Table 2. Change wavelength numerical simulation parameters

Table 2. Change wavelength numerical simulation parameters

Parameter	Value
Wavelength $λ$ / nm	532/980/1550
Propagation length L/m	8×10⁴
Height h/km	0.9
Wind speed v/(m·s⁻¹)	32
Inner scale l₀/ m	0.001
Outer scale L₀/ m	inf
Number of intervals in split-step beam propagation method nscr	11
Interval length in split-step beam propagation method z/m	8×10³

Table 3. Change transmission distance numerical simulation parameters

Table 3. Change transmission distance numerical simulation parameters

Parameter	Value
Wavelength $λ$ / nm	1000
Propagation length L / m	7×10³/7×10⁴/7×10⁵
Height h / km	0.9
Wind speed v / (m·s⁻¹)	32
Inner scale l₀/ m	0.001
Outer scale L₀/ m	inf
Number of intervals in split-step beam propagation method nscr	11
Interval length in split-step beam propagation method z / m	7×10²/7×10³/7×10⁴

Table 4. Main experimental parameters