Qingjun Zhou
University of Texas at Austin
20 Papers
211 Citations
Qingjun Zhou is an academic researcher from University of Texas at Austin. The author has contributed to research in topics: Optical switch & Waveguide (optics). The author has an hindex of 10, co-authored 20 publications.
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Papers
Dispersion-enhanced photonic crystal fiber array for a true time-delay structured X-band phased array antenna
Yongqiang Jiang,Brie Howley,Zhong Shi,Qingjun Zhou,Ray T. Chen,Maggie Y. Chen,George A. Brost,C. Lee +7 more
TL;DR: In this paper, tunable optical true time-delay modules based on highly dispersive photonic crystal fibers (PCFs) are demonstrated to provide continuous radio-frequency squint-free beam scanning for an X-band (8-12 GHz) phased array antenna system.
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Polyimide-waveguide-based thermal optical switch using total-internal-reflection effect
TL;DR: In this paper, a total internal reflection waveguide switch with an X junction was designed and fabricated by using the thermo-optic effect of polyimide materials, and the switching power with the current electrode was 132 mW, which can be reduced to 20-30 mW with an optimized design together with electroplating to form a thick conducting path.
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Polymeric electro-optic modulator based on 1×2 Y-fed directional coupler
Dechang An,Zan Shi,Lin Sun,John Martin Taboada,Qingjun Zhou,Xuejun Lu,Ray T. Chen,Suning Tang,Hua Zhang,William H. Steier,Albert S. Ren,Larry R. Dalton +11 more
TL;DR: In this article, a polymeric electro-optic modulator based on a 1×2 Y-fed directional waveguide coupler was demonstrated, achieving a low switching voltage of 3.6 V and a high extinction ratio of 26 dB with a wavelength of 1.34 μm.
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2-bit reconfigurable true time delay lines using 2/spl times/2 polymer waveguide switches
TL;DR: In this article, a 2-bit (four delays) polymer waveguide delay device is demonstrated and characterized, which is composed of polymer delay lines, optical fiber delay lines and polymer thermooptical 2/spl times/2 switches.
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Characteristics of optical bandpass filters employing series-cascaded double-ring resonators
Jianyi Yang,Jianyi Yang,Qingjun Zhou,Feng Zhao,Xiaoqing Jiang,Brie Howley,Minghua Wang,Ray T. Chen +7 more
TL;DR: In this paper, the role of coupling coefficients and the effects of optical loss on the performance of a series-cascaded double-ring optical resonator (SDRR) was analyzed.
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