Performance comparison of analogue inter-satellite microwave photonics link using intensity modulation with direct detection and phase modulation with interferometric detection

Zihang Zhu; Shanghong Zhao; Yongjun Li; Xuan Li

Performance comparison of analogue inter-satellite microwave photonics link using intensity modulation with direct detection and phase modulation with interferometric detection

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Author(s): Zihang Zhu ^{1, 2} ; Shanghong Zhao ¹ ; Yongjun Li ¹ ; Xuan Li ¹
- Affiliations: 1: Information and Navigation College, Air Force Engineering University, Xi'an 710077, People's Republic of China;
  2: Key Laboratory of Science and Technology on Space Microwave Technology, Xi'an 710000, People's Republic of China
Source: Volume 9, Issue 2, April 2015, p. 88 – 95
DOI: 10.1049/iet-opt.2014.0036 , Print ISSN 1751-8768, Online ISSN 1751-8776

Received 25/04/2014, Accepted 29/09/2014, Revised 29/08/2014, Published 31/10/2014

The performance of optical inter-satellite communications using microwave photonics technologies employing intensity modulation with direct detection (IMDD) and phase modulation (PM) with interferometric detection are investigated and demonstrated with a numerical example. The theoretical model considering the saturated gain and amplifier spontaneous emission noise of optical booster amplifier and optical preamplifier is constructed for both architectures. Furthermore, the authors compare the performance of PM with interferometric detection to optimum biased IMDD in terms of radio frequency (RF) gain, RF noise figure and compression dynamic range (CDR). The numerical results show that the PM with interferometric detection can achieve better RF gain, RF noise figure and CDR than the optimum biased IMDD link as the laser output power is lower than 14.34, 12.45 and 4.2 dBm, respectively.

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Performance comparison of analogue inter-satellite microwave photonics link using intensity modulation with direct detection and phase modulation with interferometric detection

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