| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a small photoelectric field sensor having isotropy in the electric field detection using a simple constitution. <P>SOLUTION: The photoelectric field sensor is comprises 3 axial photoelectric field sensors 50, each of which is provided in x, y, and z axial direction orthogonal to each other, arranged for detection of the electric fields of x, y, and z axial directions; a light attenuator 54; and an optical detector 55, wherein the 3 axal photoelectric field sensor 50 comprises a light source part comprising light sources 51a, 51b; a 1st polarization wave synthesizer 52a; a 4 port polarized wave demultiplexing light circulator 53; and a Mach-Zehnder interferometer comprising a 2nd polarized wave synthesizer 52b, polarization electrodes and a branching optical wave-guide on an electro-optical crystal substrate. Each modulated light, emitted from each 3 axis photoelectric field sensor modulated by each electric field in the direction of x, y, and z axis, is synthesized by 4 port polarized wave demultiplexing light circulator 53, and inputted to the optical detector 55. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
