All-Optical Photonic Microwave Phase Shifter Requiring Only a Single DC Voltage Control

作者：Li, T.; Chan, E. H. W.; Wang, X.^*; Feng, X.; Guan, B.

来源：IEEE Photonics Journal, 2016, 8(4): 5501008.

DOI：10.1109/JPHOT.2016.2577710

• Radio-frequency (RF) photonics
• fiber optics links and subsystems
• analog optical signal processing
• wideband phase shifters

An all-optical photonic microwave phase shifter that requires only a single dc voltage control to realize continuous 0 degrees to 360 degrees radio-frequency (RF) signal phase shift over a wide frequency range is presented. It is based on using an integrated dual-parallel Mach Zehnder modulator (DPMZM) with a 90 degrees polarization rotator in one arm to generate an orthogonally polarized optical carrier and RF modulation sidebands and using a polarization-dependent optical phase shifter to introduce different optical phase shifts to these orthogonal polarization components. The phase shifter has a fast response time, a high resolution, and a compact structure. Experimental results are presented, which demonstrate a continuous 360 degrees phase shift with a flat phase and amplitude response performance over a microwave frequency range of 6.5-26.5 GHz.

• 出版日期2016-8
• 单位暨南大学