W-Band Pulse Generation Using Phase-Locked Lasers and High-Power Photodiode

We present an RF photonic pulse generator operating at 77 GHz that can be implemented with multioctave RF tunability. Capitalizing on the beat frequency provided by an optical heterodyne, optical pulse generation is achieved using a low-speed, null-biased Mach-Zehnder modulator while RF pulse genera...

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Bibliographic Details
Published in:IEEE photonics technology letters 2022-06, Vol.34 (12), p.645-648
Main Authors: Carey, Victoria A., Konkol, Matthew R., Harrity, Charles E., Shahid, Eliezer L., Schuetz, Christopher A., Yao, Peng, Prather, Dennis W.
Format: Article
Language:English
Subjects:
Beat frequencies
Computer architecture
Low speed
Mach-Zehnder interferometers
Millimeter wave generation
Optical attenuators
Optical mixing
Optical modulation
Optical pulse generation
photodiode
Photodiodes
Power generation
Pulse duration
pulse generation
Pulse generators
Pulse repetition frequency
Radar
Radio frequency
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Summary:We present an RF photonic pulse generator operating at 77 GHz that can be implemented with multioctave RF tunability. Capitalizing on the beat frequency provided by an optical heterodyne, optical pulse generation is achieved using a low-speed, null-biased Mach-Zehnder modulator while RF pulse generation is achieved using a high-speed, high-power photodiode. Peak photodiode output power as high as 27.4 dBm is reported with a pulse width of 5 ns and a pulse repetition frequency of 1 MHz. System architecture is described, and photodiode output power as a function of duty cycle is investigated.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2022.3178628