Abstract
A binary polarization shift-keying scheme with two circle polarization states, circle polarization shift keying (CPolSK), is proposed and discussed. The propagation of the circle-polarized Gaussian Schell model beam is studied based on the cross-spectral density matrix. The results show that the state of polarization remains unchanged and the degree of polarization slightly increases upon propagation in a turbulent atmosphere. The analysis of the bit-error-rate performance shows that the CPolSK system has about a 3 dB lower requirement in signal-to-noise ratio than the on–off keying system. The modulation scheme will be helpful for practical free-space optical communication systems in the future.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Xinhui Zhao, Yong Yao, Yunxu Sun, Xiaochuan Xu, Jiajun Tian, and Chao Liu
J. Opt. Commun. Netw. 2(8) 570-575 (2010)
Xinhui Zhao, Yong Yao, Yunxu Sun, and Chao Liu
Opt. Express 17(20) 17888-17894 (2009)
Anshul Jaiswal, Manav R. Bhatnagar, and Virander Kumar Jain
J. Opt. Commun. Netw. 9(2) 149-160 (2017)