title: Design of a vector-sum integrated microwave photonic phase shifter in silicon-on-insulator waveguides.
abstract: An orthogonal vector-sum integrated microwave photonic phase shifter (IMWPPS), consisting of mode-order converter multiplexers (MOCMs), a variable optical power splitter (VOPS), an optical switch (OS) and fixed time delay lines (FTDLs), was theoretically demonstrated in a silicon-on-insulator wafer. MOCMs, as a key element of our device, were employed to generate orthogonal vector signals and served as lossless optical combiners. Combining with the thermo-optical VOPS, OS and FTDLs, the microwave phase shift of 0∼2π could be achieved by a refractive index variation of 0∼15×10(-3) in the millimeter wave band. The corresponding tuning resolution was about 1.64°/°C. This work, for the first time to our knowledge, provides an attractive solution to transferring a vector-sum method based bulk MWPPS into a integrated one, which is very important for large-scale optically controlled phase array antenna.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun, 130012, China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Qu
authors.forename: Caixia
authors.initials: C
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Dong
authors.forename: Weiyou
authors.initials: W
authors.lastname: Chen
authors.forename: Fumin
authors.initials: F
authors.lastname: Li
authors.forename: Haibin
authors.initials: H
authors.lastname: Li
authors.forename: Zhaoxin
authors.initials: Z
authors.lastname: Gong
authors.forename: Shengping
authors.initials: S
authors.lastname: Ruan
authors.forename: Xindong
authors.initials: X
authors.lastname: Zhang
authors.forename: Jingran
authors.initials: J
authors.lastname: Zhou