A scheme for the generation of phase-coded microwave signals using an electrically tunable photonic microwave phase shifter is proposed and demonstrated. The photonic phase shifter is based on a single-sideband polarization modulator (PolM), and the tuning of the phase shifter is implemented by a second PolM. By introducing an RF signal to the first PolM and an electrical coding signal to the second PolM, a phase-coded microwave signal with binary phase codes or polyphase codes is achieved. An experiment is performed. The simple and flexible operation, high coding rate, large frequency range, excellent transmission performance, and high stability of the system is confirmed.
© 2013 Optical Society of America
Fourier Optics and Signal Processing
Original Manuscript: December 28, 2012
Revised Manuscript: January 28, 2013
Manuscript Accepted: January 31, 2013
Published: February 27, 2013
Yamei Zhang and Shilong Pan, "Generation of phase-coded microwave signals using a polarization-modulator-based photonic microwave phase shifter," Opt. Lett. 38, 766-768 (2013)