Title :
Photonics-Assisted Serial Channelized Radio-Frequency Measurement System With Nyquist-Bandwidth Detection
Author :
Hongwei Chen ; Ruiyue Li ; Cheng Lei ; Ying Yu ; Minghua Chen ; Sigang Yang ; Shizhong Xie
Author_Institution :
Tsinghua Nat. Lab. for Inf. Sci. & Technol. (TNList), Beijing, China
Abstract :
Based on serial channelization and coherent detection, a radio-frequency (RF) measurement scheme with a Nyquist-bandwidth detector is proposed and experimentally demonstrated. With a wavelength scanning structure, multiple RF channels serial in the time domain are implemented. A coherent receiving module based on an optical hybrid and balanced photodetectors (BPDs) is constructed to reduce the receiver bandwidth and the bandwidth of the follow-up electronic devices. In this paper, a six-channel 3-GHz-spacing channelizer, with 18-GHz receiving bandwidth and 1.5-GHz BPD, is demonstrated. In addition, multifrequency signals and a linear frequency modulation signal with the slope of 4.53 MHz/μs are tested.
Keywords :
frequency modulation; light coherence; microwave photonics; modules; optical receivers; photodetectors; telecommunication channels; Nyquist-bandwidth detection; balanced photodetectors; bandwidth 18 GHz; coherent detection; coherent receiving module; linear frequency modulation signal; multifrequency signals; photonics-assisted serial channelized radio-frequency measurement system; serial channelization; six-channel 3-GHz-spacing channelizer; wavelength scanning structure; Bandwidth; Frequency modulation; Optical fibers; Optical filters; Radio frequency; Time-frequency analysis; Radio-frequency measurement; serial channelization; wavelength scanning;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2014.2366168
