Homodyne detection of microwaves using low-temperature-grown GaAs at 1.55 µm
- Resource Type
- Conference
- Authors
- Hisatake, Shintaro; Shimahashi, Kyohei; Kitahara, Genki; Morimoto, Yuta; Song, Ho-Jin; Ajito, Katsuhiro; Nagatsuma, Tadao
- Source
- 2011 International Topical Meeting on Microwave Photonics jointly held with the 2011 Asia-Pacific Microwave Photonics Conference Microwave Photonics, 2011 International Topical Meeting on & Microwave Photonics Conference, 2011 Asia-Pacific, MWP/APMP. :308-311 Oct, 2011
- Subject
- Fields, Waves and Electromagnetics
Photonics and Electrooptics
Optical attenuators
Nonlinear optics
Optical amplifiers
Optical modulation
Fiber optics
Optical fiber sensors
LTG-GaAs
homodyne detection
photoconductive mixer
microwave
millimeter wave
terahertz wave
- Language
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.