@inproceedings{9c9593ef07914059810d92d5d7032581,
title = "W-band phase shifter based on optimized optically controlled carbon nanotube layer",
abstract = "Phase shifting in a dielectric rod waveguide (DRW), loaded with carbon nanotube (CNT) layers of different thickness, was studied experimentally under light illumination in the frequency range of 75-110 GHz. The dependence of efficiency of the phase shifting, in terms of phase shift per light intensity and millimeter wave attenuation, on the optical transparency of the CNT-layer is investigated in this paper. The best result, a phase shifter of 0-15° with less than 0.1 dB additional signal loss in the W-band was achieved for a 95% transparent CNT layer at 23 mW/mm2 light intensity of a tungsten halogen lamp (main radiation spectrum is 550-680 nm). The overall insertion loss of the phase shifter including two DRW tapering sections serving as transitions to rectangular waveguides are 3 to 5 dB in the W-band, about 2 dB is attributed to the CNT DRW section. This comprises, for the first time, an optically-controlled CNT-based DRW phase shifter with phase shift and insertion loss levels suitable for practical applications.",
keywords = "Car-bon nanotubes, Dielectric rod waveguide, Millimeter waves, Optically controlled varactor, Phase shifter",
author = "Lioubtchenko, {Dmitri V.} and Anoshkin, {Ilya V.} and Nefedova, {Irina I.} and Joachim Oberhammer and Raisanen, {Antti V.}",
year = "2017",
month = oct,
day = "4",
doi = "10.1109/MWSYM.2017.8058815",
language = "English",
series = "IEEE MTT-S International Microwave Symposium digest",
publisher = "IEEE",
pages = "1188--1191",
booktitle = "2017 IEEE MTT-S International Microwave Symposium, IMS 2017",
address = "United States",
note = "IEEE MTT-S International Microwave Symposium, IMS ; Conference date: 04-06-2017 Through 09-06-2017",
}