Electrooptic Phase Tracking of Microwave Signals Beyond 18.5 GHz Using an Integrated Electrooptic Modulator as an Optoelectronic Harmonic Mixer in a Phase Lock Loop
Journal
IEEE Microwave and Guided Wave Letters
Journal Volume
4
Journal Issue
4
Pages
115-117
Date Issued
1994
Author(s)
Abstract
We demonstrate electrooptic phase tracking of microwave signals beyond 18.5 GHz using a gain-switched laser diode as the optical clock. The key element of this system is a fiber-pigtailed integrated-optic Mach-Zehnder modulator (IOM). The IOM functions as an optoelectronic harmonic mixer in a phase lock loop. The conversion loss of the OEHM is 66 dB. The phase error and the single sideband phase noise density of the phase-locked 18.5 GHz signal is 5.6/spl times/10/sup /spl minus/5/ rad//spl radic/(Hz) and -54 dBc/Hz, respectively.>
SDGs
Type
journal article