TY - JOUR
T1 - Microwave photonic downconversion using phase modulators in a sagnac loop interferometer
AU - Chan, E.H.W.
AU - Minasian, R.A.
PY - 2013
Y1 - 2013
N2 - A new high conversion efficiency and wideband microwave photonic downconverter with infinite isolation between the RF and LO port, which enables the RF and LO to be located at different locations, is presented. It is based on two traveling wave electrooptic phase modulators inside a Sagnac loop interferometer. No dc bias voltages are required and there are no bias drift issues. High conversion efficiency downconversion is obtained by optical carrier suppression inherent from the Sagnac loop structure, which allows high-amplitude RF and LO sidebands into the photodetector. The microwave photonic downconverter topology can be extended to have multiple RF channels using a wavelength division multiplexing technique in which the phase modulators driven by the RF signals can be located in different remote locations. Experimental results are presented which demonstrate wideband operation from 5 to 20 GHz and over 26 dB conversion efficiency improvement compared to the conventional dual-series MZM-based microwave photonic downconverter. © 2013 IEEE.
AB - A new high conversion efficiency and wideband microwave photonic downconverter with infinite isolation between the RF and LO port, which enables the RF and LO to be located at different locations, is presented. It is based on two traveling wave electrooptic phase modulators inside a Sagnac loop interferometer. No dc bias voltages are required and there are no bias drift issues. High conversion efficiency downconversion is obtained by optical carrier suppression inherent from the Sagnac loop structure, which allows high-amplitude RF and LO sidebands into the photodetector. The microwave photonic downconverter topology can be extended to have multiple RF channels using a wavelength division multiplexing technique in which the phase modulators driven by the RF signals can be located in different remote locations. Experimental results are presented which demonstrate wideband operation from 5 to 20 GHz and over 26 dB conversion efficiency improvement compared to the conventional dual-series MZM-based microwave photonic downconverter. © 2013 IEEE.
KW - Efficiency improvement
KW - Electrooptic phase modulator
KW - High conversion efficiency
KW - Microwave mixers
KW - Microwave Photonics
KW - Optical carrier suppression
KW - Sagnac loop interferometers
KW - Wideband microwaves, Interferometers
KW - Microwave devices
KW - Optical frequency conversion
KW - Optical signal processing
KW - Phase modulation
KW - Signal processing, Microwaves
UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880952247&doi=10.1109%2fJSTQE.2013.2263119&partnerID=40&md5=f1ae18d841e771ff3bbf4b3a04e324ae
U2 - 10.1109/JSTQE.2013.2263119
DO - 10.1109/JSTQE.2013.2263119
M3 - Article
SN - 1077-260X
VL - 19
SP - 211
EP - 218
JO - IEEE Journal on Selected Topics in Quantum Electronics
JF - IEEE Journal on Selected Topics in Quantum Electronics
IS - 6
ER -