Title :
Homodyne detection of microwaves using low-temperature-grown GaAs at 1.55 µm
Author :
Hisatake, Shintaro ; Shimahashi, Kyohei ; Kitahara, Genki ; Morimoto, Yuta ; Song, Ho-Jin ; Ajito, Katsuhiro ; Nagatsuma, Tadao
Author_Institution :
Grad. Sch. of Eng. Sci., Osaka Univ., Toyonaka, Japan
Abstract :
We demonstrate homodyne detection of microwaves using low-temperature-grown (LTG) GaAs with 1.55-μm optical local oscillator (LO). The sensitivity of the detection is almost proportional to the average power of the optical LO, which indicates that the photoresponse of the LTG-GaAs is linear process in our case. The dynamic range of the detection is more than 50 dB. About -22 dBm of 14.6 GHz emitted from a patch antenna is detected. The possibility for terahertz wave homodyne detection has been discussed.
Keywords :
III-V semiconductors; gallium arsenide; homodyne detection; microstrip antennas; microwave detectors; microwave oscillators; microwave photonics; terahertz wave detectors; GaAs; frequency 14.6 GHz; low-temperature-grown GaAs; microwave homodyne detection; optical local oscillator; patch antenna; terahertz wave homodyne detection; wavelength 1.55 mum; Fiber optics; Nonlinear optics; Optical amplifiers; Optical attenuators; Optical fiber sensors; Optical modulation; LTG-GaAs; homodyne detection; microwave; millimeter wave; photoconductive mixer; terahertz wave;
Conference_Titel :
Microwave Photonics, 2011 International Topical Meeting on & Microwave Photonics Conference, 2011 Asia-Pacific, MWP/APMP
Conference_Location :
Singapore
Print_ISBN :
978-1-61284-716-0
DOI :
10.1109/MWP.2011.6088732
