Linear photonic radio frequency phase shifter using a differential-group-delay element and an optical phase modulator.
We demonstrate a stable and linear photonic radio frequency (RF) phase shifter based on a differential-group-delay element and the polarization sensitive effect of an optical phase modulator. The phase shift can be tuned continuously over 360 degrees for RF signals over 40GHz with an electrical control voltage from -7.5 to +7.5V.
Institute of Photonics Technology, Jinan University, Guangzhou, China.
Zhaohui
Z
Li
Changyuan
C
Yu
Yi
Y
Dong
Linghao
L
Cheng
L F K
LF
Lui
Chao
C
Lu
Alan Pak Tao
AP
Lau
Hwa-Yaw
HY
Tam
P K A
PK
Wai