| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS [0022] The above and other features and advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which: [0023]FIGS. 1 through 3 are cross-sectional views of a semiconductor optical device having a current-confined structure according to an embodiment of the presen
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