| 摘要 |
<p>PURPOSE:To provide an optical field sensor wherein an outer package including antenna elements is downsized as much as possible and its handling is simplified. CONSTITUTION:An optical field sensor is structured so that an optical waveguide 1 is split on an optical substrate 2 (a part of 8) attached in a package 9, an electric field to be measured which is parallel to a crystal axis of the optical substrate is applied via a pair of antenna elements to the split optical waveguide for fluctuating a phase of waveguide light and waves are combined again to measure light intensity, wherein the pair of antenna elements 11 are placed oppositely to each other in parallel to the optical waveguide 1 with a center on a side of the package 9 as an end, or they are attached to an outer wall of the side of the package oppositely to each other in parallel to the optical waveguide 1.</p> |
