Title :
A millimetre wave phase shifter using a 40GHz hybrid mode locked laser
Author :
Khawaja, Bilal A. ; Cryan, Martin J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Bristol, Bristol
Abstract :
In this paper, electrical injection locking of a mode-locked laser is used to create a millimetre wave phase shifter. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems. Both magnitude and phase of the modulation response are measured and for sufficiently high RF input power a ldquoplateaurdquo is observed in the magnitude response which corresponds to the locking range of the system. Phase shifts of greater than 90deg are observed and such devices could have applications in millimetre wave radio-over-fibre phased array antenna systems.
Keywords :
laser mode locking; millimetre wave phase shifters; network analysers; semiconductor lasers; electrical injection locking; hybrid mode locked laser; millimetre wave phase shifter; millimetre wave radio-over-fibre phased array antenna systems; modulation response; vector network analyzer; Antenna arrays; Antenna measurements; Injection-locked oscillators; Laser mode locking; Phase measurement; Phase modulation; Phase shifters; Phased arrays; Power measurement; Radio frequency; Injection locking; Millimetre wave; Mode-locked laser; Phase shifter; Phased array antenns systems; Radio-over-fibre; component;
Conference_Titel :
Emerging Technologies, 2008. ICET 2008. 4th International Conference on
Conference_Location :
Rawalpindi
Print_ISBN :
978-1-4244-2210-4
Electronic_ISBN :
978-1-4244-2211-1
DOI :
10.1109/ICET.2008.4777480
