Title :
High Q-factor microwave Fabry-Perot resonator with distributed Bragg reflectors
Author :
Krupka, Jerzy ; Cwikla, Andrzej ; Mrozowski, Michal ; Clarke, Robert N. ; Tobar, Michael E.
Author_Institution :
Inst. of Microelectron. & Optoelectron., Warsaw Univ. of Technol., Poland
Abstract :
A Fabry-Perot resonator operating at 39 GHz, with two pairs of quarter-wavelength single-crystal quartz Bragg reflectors has been realized. For the length of 98.26 mm, its Q-factor is about 560000, which is 4.3 times better than for the same resonator without Bragg reflectors. Rigorous finite-difference frequency-domain analysis has been applied to the problem and is compared with simplified semi-analytical solutions. Good agreement between theoretical and experimental resonant frequency arid Q-factors has been obtained. Thermal compensation of the resonant frequency of the Fabry-Perot has been proposed employing rods and cylinders made of metals with different thermal expansion coefficients.
Keywords :
Fabry-Perot resonators; Q-factor; distributed Bragg reflectors; finite difference methods; integrated optics; microwave photonics; quartz; thermal expansion; 39 GHz; 98.26 mm; Fabry-Perot resonator; Q-factor; SiO/sub 2/; distributed Bragg reflectors; finite-difference frequency-domain analysis; microwave resonator; quarter-wavelength Bragg reflectors; resonant frequency; single-crystal quartz reflectors; thermal expansion coefficient; Bragg gratings; Dielectric losses; Distributed Bragg reflectors; Fabry-Perot; Millimeter wave measurements; Mirrors; Q factor; Resonant frequency; Surface resistance; Thermal expansion;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2005.1516015
