Title :
Photodiode limitations in the generation of low-noise microwave signals from stable frequency combs
Author :
Taylor, Jennifer A. ; Diddams, Scott A. ; Datta, Shubhashish ; Joshi, Abhay
Author_Institution :
Time & Freq. Div., Nat. Inst. of Stand. & Technol. (NIST), Boulder, CO, USA
Abstract :
An optically-stabilized femtosecond laser frequency comb can generate low phase noise microwave signals; however, excess noise arises in the photodetection process. We study the impact of photodetector shot noise, saturation, and power-top phase conversion on 1-10 GHz signal generation.
Keywords :
high-speed optical techniques; microwave generation; photodetectors; photodiodes; shot noise; signal generators; femtosecond laser frequency comb; frequency 1 GHz to 10 GHz; microwave signal generation; optical stability; photodetecor shot noise; photodiode; power top phase conversion; stable frequency combs; Frequency; Laser noise; Microwave generation; Noise generators; Optical noise; Optical saturation; Phase noise; Photodiodes; Signal generators; Ultrafast optics;
Conference_Titel :
Microwave Photonics, 2009. MWP '09. International Topical Meeting on
Conference_Location :
Valencia
Print_ISBN :
978-1-4244-4788-6
