Approach to improve beam quality of inter-satellite optical communication system based on diffractive optical elements

Tan, Liying; Yu, Jianjie; Ma, Jing; Yang, Yuqiang; Li, Mi; Jiang, Yijun; Liu, Jianfeng; Han, Qin

doi:10.1364/oe.17.006311

Cited by 14 publications

(10 citation statements)

References 15 publications

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“…The DOE is used to shape the Gaussian beam into hollow beam profile to avoid the block. According to [2,5], the amplitudes of the reshaped HGB and hollow top hat beam at exiting pupil (P3) can be expressed as…”

Section: Theoretical Analysismentioning

confidence: 99%

“…where C 1 , C 2 are the new coefficients of the shaped beam, r 30 , r 3m are the inner and outer radius of the hollow beam at P3, w 03 is the waist of HGB. The intensity of HGB and HTB at receiving terminal (Rx) is calculated based on Fronhoffer diffraction principle [2], which is…”

Section: Theoretical Analysismentioning

confidence: 99%

“…The DOE is used to shape the Gaussian beam into hollow beam profile to avoid the block. According to [2, 5], the amplitudes of the reshaped HGB and hollow top hat beam at exiting pupil (P3) can be expressed as

A_{31} = ({, \begin{matrix} 1em4pt \\ C_{1} \cdot e^{- r_{3}^{2} / w_{03}^{2}}, & r_{30} < (||, r_{3}) < r_{3 m} \\ 0, & normalotherwise \end{matrix})

A_{32} = ({, \begin{matrix} 1em4pt \\ C_{2} \cdot I, & r_{30} < (||, r_{3}) < r_{3 m} \\ 0, & normalotherwise \end{matrix})

where C 1 , C 2 are the new coefficients of the shaped beam, r 30 , r 3 m are the inner and outer radius of the hollow beam at P3, w 03 is the waist of HGB.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…The intensity of HGB and HTB at receiving terminal (Rx) is calculated based on Fronhoffer diffraction principle [2], which is

I_{4} false(x_{4}, y_{4} false) = ({, \begin{matrix} 1em4pt \\ {false(1 / λ z false)}^{2} {(||, F falsefalse{A_{31} falsefalse})}^{2} & normalHGB \\ {false(1 / λ z false)}^{2} {(||, F falsefalse{A_{32} falsefalse})}^{2} & normalHTB \end{matrix})

where λ is the wavelength, z is the transmitted distance. F represents fast Fourier transform,…”

Section: Theoretical Analysismentioning

confidence: 99%

“…As we know, the secondary mirror of traditional refractive optical telescope will block part of the transmission power at transmitting terminal (Tx) [2]. In our former research, we introduce a couple of diffractive optical elements (DOEs) to shape Gaussian beam into hollow Gaussian beam (HGB) to solve the block problem [2]. However, some researchers find that top-hat beam shows better performance than Gaussian beam in space optical communication [3,4].…”

mentioning

confidence: 99%

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Hollow top‐hat DOE shaping method applied in space uplink chaotic optical communication for BER improvement

Chen

et al. 2020

Electron. lett.

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As the traditional refractive optical telescope blocks part of the transmission beam, the transmission efficiency in space chaotic optical communication is needed to be improved. A couple of diffractive optical elements (DOEs) are introduced into the optical subsystem at transmitting terminal to avoid the obscuration through shaping transmission beam into hollow top-hat beam (HTB). The simulation results indicate that shaping transmission beam into HTB is more efficient than traditional hollow Gaussian beam in bit error rate (BER) improvement of space chaotic optical communication. The results are significant for the optimisation design of space uplink chaotic optical communication system.

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Section: Theoretical Analysismentioning

confidence: 99%

Section: Theoretical Analysismentioning

confidence: 99%

“…The DOE is used to shape the Gaussian beam into hollow beam profile to avoid the block. According to [2, 5], the amplitudes of the reshaped HGB and hollow top hat beam at exiting pupil (P3) can be expressed as

A_{31} = ({, \begin{matrix} 1em4pt \\ C_{1} \cdot e^{- r_{3}^{2} / w_{03}^{2}}, & r_{30} < (||, r_{3}) < r_{3 m} \\ 0, & normalotherwise \end{matrix})

A_{32} = ({, \begin{matrix} 1em4pt \\ C_{2} \cdot I, & r_{30} < (||, r_{3}) < r_{3 m} \\ 0, & normalotherwise \end{matrix})

where C 1 , C 2 are the new coefficients of the shaped beam, r 30 , r 3 m are the inner and outer radius of the hollow beam at P3, w 03 is the waist of HGB.…”