Abstract
A photonic approach for the generation of a widely tunable arbitrarily phase-coded microwave signal based on a dual-parallel polarization modulator (DP-PolM) is proposed and demonstrated without using any optical or electrical filter. Two orthogonally polarized first-order optical sidebands with suppressed carrier are generated based on the DP-PolM, and their polarization directions are aligned with the two principal axes of the following PolM. Phase coding is implemented at a following PolM driven by an electrical coding signal. The inherent frequency-doubling operation can make the system work at a frequency beyond the operation bandwidth of the DP-PolM and the 90° hybrid. Because no optical or electrical filter is applied, good frequency tunability is realized. An experiment is performed. The generation of phase-coded signals tuning from 10 to 40 GHz with up to coding rates is verified.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Yamei Zhang and Shilong Pan
Opt. Lett. 38(5) 766-768 (2013)
Peng Li, Lianshan Yan, Jia Ye, Yan Pan, Wei Pan, Bin Luo, Xihua Zou, Tao Zhou, Zhiyu Chen, and Maowen Wang
Opt. Express 26(21) 28013-28021 (2018)
Wei Li, Wen Ting Wang, Wen Hui Sun, and Ning Hua Zhu
Opt. Lett. 39(6) 1561-1564 (2014)