학술논문
Design and characterization of a photonic integrated circuit for beam forming in 5G wireless networks
Document Type
Conference
Author
Source
2017 International Topical Meeting on Microwave Photonics (MWP) Microwave Photonics (MWP), 2017 International Topical Meeting on. :1-4 Oct, 2017
Subject
Language
Abstract
We present the design and experimental characterization of a silicon-on-insulator photonic integrated circuit to be used as building block in photonics-based beamforming networks for 5G wireless systems. The integrated module controls the phase of the millimeter-wave signals transmitted and received by an antenna element in a phased-array antenna. It comprises an optical de-interleaver for carrier-sideband separation, a microring resonator (MRR) -based phase-shifter (PS) and a carrier depletion-based MRR electro-optic modulator. The photonic de-interleaver enables flexible operation with different RF frequencies. The PS exploits two thermally-tunable cascaded MRRs that allow continuous shifting of the carrier phase over more than 400 degrees. The device is proved allowing a precise beamforming control with a power consumption of few tens of mWs per antenna element.