Title :
Picosecond wireless synchronization using an Optically Locked Voltage Controlled Oscillator (OL-VCO)
Author :
Xuebei Yang ; Xuyang Lu ; Babakhani, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
In this paper, the first fully integrated Optically Locked Voltage Controlled Oscillator (OL-VCO) is reported. The OL-VCO is locked to an RF source through a free-space optical link at λ=850 nm. In the locked mode, the OL-VCO achieves an RMS jitter of 1.6 psec with 16 averaging. It also improves the phase noise by 25 dB at 100 Hz offset frequency. The wireless synchronization is achieved at a distance of 1.5 m, representing more than two orders of magnitude improvement compared to the prior art.
Keywords :
optical links; phase noise; synchronisation; voltage-controlled oscillators; RF source; RMS jitter; distance 1.5 m; free-space optical link; frequency 100 Hz; fully-integrated OL-VCO; magnitude improvement; offset frequency; optically-locked voltage controlled oscillator; phase noise; picosecond wireless synchronization; time 1.6 ps; wavelength 850 nm; CMOS integrated circuits; Laser mode locking; Optical arrays; Optical coupling; Optical modulation; Optical transmitters; Photodiodes; CMOS; SOI; Wireless synchronization; optical injection; precision timing; voltage controlled oscillator;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848566
