[1] SMUTNY B,LANGE R,MǜHLNIKEL G, et al. 5.6Gbps optical intersatellite communication link[C]. SPIE, 2009, 7199: 719906.
[6] LANGE R, SMUTNY B. Optical inter-satellite links based on homodyne BPSK modulation: heritage, status, and outlook[C]. SPIE, 2005: 1-12.
[8] LI Xiang-yang, MA Zong-feng, SHI De-le. Effect of Gaussian fields distribution on mixing efficiency forcoherent detection[J].Infrared and Laser Engineering,2015, 44(2): 539-543.
[9] HSIEH Y C. Free-space optical hybrid: US, 7864433 [P]. 2011-01-04
[10] SEIMETZ M, WEINERT C M. Options, feasibility, and availability of 2×4 90° hybrids for coherent optical systems[J]. Journal of Lightwave Technology, 2006, 24 3): 1317-1322.
[11] WAN Ling-yu, ZHOU Yu, LIU Li-ren, et al. Realization of a free-space 2×4 90o optical hybrid based on the birefringence and electro-optic effects of crystals[J].Journal of Optics, 2013, 15(3): 1-6.
[13] ZHENG Yang, JIANG Hui-lin, TONG Shou-feng, et al. Opto-mechancial structure design of the space optical hybrid based on space coherent laser communication[J]. Acta Optica Sinica,2013, 33(9): 0906008.
[15] GARREIS R B, CARL Z. 90° optical hybrid for coherent receivers[C]. SPIE, 1991, 1522: 124-131.