Laser & Optoelectronics Progress, Volume. 57, Issue 9, 092002(2020)
Design and Research of A/D Sampling High-Speed Photoconductive Switch for Radio-Frequency Signal
Theoretical analysis of the coplanar waveguide photoconductive switch based on InGaAs material system is carried out, and the transmission performance of the radio-frequency (RF) signal in the dark state without illumination and the bright state with laser irradiation is studied. A laser pulse trigger switch with a working wavelength of 1550 nm, a pulse width of 96 fs and a repetition rate of 103.2 MHz is used to sample the 445 MHz RF signal. Experimental results confirm that the high-speed photoconductive switch can realize the bandpass sampling of the RF signal, while reducing the carrier lifetime of the switch, which is conductive to achieving higher frequency signal sampling.
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Ming Chang, Rui Hu, Yiping Wang, Wei Xia, Yunjie Cheng. Design and Research of A/D Sampling High-Speed Photoconductive Switch for Radio-Frequency Signal[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092002
Category: Optics in Computing
Received: Sep. 4, 2019
Accepted: Sep. 20, 2019
Published Online: May. 6, 2020
The Author Email: Wang Yiping (jeremy_ff@sina.com)