Theoretical and simulated research on bias points optimization of optical modulation of microwave signals on board satellite

Li Yongjun; Miao Xinping; Li Xuan; Zhao Shanghong; Li Ruixin; Liu Zhenxia

Optical modulation theory of DE-MZM on board satellite was studied, output optics field expression of modulator with single input microwave signal was obtained. The analytical expression of four key parameters including carrier to noise ratio(CNR), RF gain, noise figure(NF), spurious-free dynamic range(SFDR) were deduced. The inter-satellite links transmission equation of microwave photonics was built. Using simulation software of OptiSystem, simulated model of microwave photonics links on board satellite was constructed and simulating research was performed. The simulated results show when the bias point is set to orthogonal bias point, RF gain is optimal. CNR, NF and SFDF are synchronously optimized when the modulator is low biased.

1. School of Information and Navigation,Air Force Engineering University,Xi'an 710077,China

Received Date: 2014-12-17

Rev Recd Date: 2015-01-20

Publish Date: 2015-08-25

Key words:

Abstract: Optical modulation theory of DE-MZM on board satellite was studied, output optics field expression of modulator with single input microwave signal was obtained. The analytical expression of four key parameters including carrier to noise ratio(CNR), RF gain, noise figure(NF), spurious-free dynamic range(SFDR) were deduced. The inter-satellite links transmission equation of microwave photonics was built. Using simulation software of OptiSystem, simulated model of microwave photonics links on board satellite was constructed and simulating research was performed. The simulated results show when the bias point is set to orthogonal bias point, RF gain is optimal. CNR, NF and SFDF are synchronously optimized when the modulator is low biased.

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Theoretical and simulated research on bias points optimization of optical modulation of microwave signals on board satellite

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