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Effect of DBR Geometry on Reflectivity and Spectral Linewidth of DBR Lasers
第 26 卷 第 12 期 半 导 体 学 报 Vol . 26 No . 12
2005 年 12 月 C H IN ESE J OU RNAL O F SEM ICONDU C TOR S Dec . ,2005
Eff ect of DBR Geometry on Reflectivity and Spectral
Line width of DBR Lasers
Fan g Dawei1 ,2 , Zhan g Yi1 , Li Chenxia1 , Manzaneda C3 , an d Li Bo 1 ,2
( )
1 Col leg e of I nf orm at ion Eng i neeri ng , Chi na J i l i ang Uni vers ity , H ang z hou 3 100 18 , Chi na
( )
2 Col leg e of Op t ics an d Elect ronics , Uni vers ity of S hang hai f or S cience an d Technology , S hang hai 200093 , Chi na
(3 D ep art ment of Elect rical Eng i neeri ng , Uni vers ity of I l l i nois , US A )
Abstract : The linewidt h s of In GaA sGaA sAl GaA s DBR laser s wit h varied DBR dimen sional p aramet er s are mea s
ured and analyzed . These laser s were built wit h different DBR grating lengt h s and dep t h s in or der to explore t he
effect of t he size of t he DBR on it s coupling coefficient and reflectivit y ,and hence on t he linewidt h of t he la ser di
odes. The linewidt h s were mea sured by employing a self het erodyne linewidt h mea surement sy st em . The exp erimen
t al and calcul
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