OPTICAL MODULATOR ELEMENT, OPTICAL MODULATION MODULE INCLUDING THE SAME, AND OPTICAL MODULATOR ELEMENT MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical modulator element that has a chip area contracted more than a conventional element, and to provide an optical modulation module including the optical modulator element, and manufacturing method of the optical modulator element.;SOLUTION: An optical modulator element 100 comprises: first and second optical modulators 161 and 162; an optical input unit 2; and a brach coupler 4. Each of the first and second optical modulators 161 and 162 comprises: a one set of Mach-Zehnder type waveguides; a first optical coupler 8 that causes light from a brach coupler 4 to branched to each of the Mach-Zehnder type waveguides; and a second optical coupler 9 that synthesizes the light passing through each of one set of the Mach-Zehnder type waveguides. In each of the optical modulators 161 and 162, an advancement direction of light of one set of Mach-Zehnder type waveguides 15a and 15b of the first optical modulator element 161, and an advancement direction of light of one set of Mach-Zehnder type waveguides 15c and 15d of the second optical modulator element 162 are arranged with the advancement directions mutually angled.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT