초록 ▼

An electrooptic effect element of this invention has first, second, and third electrodes. The first and second electrodes are formed on a substrate having an electrooptic effect, in order to form a high-frequency electric field for polarizing a light beam, thus constituting a microstrip line, as in

An electrooptic effect element of this invention has first, second, and third electrodes. The first and second electrodes are formed on a substrate having an electrooptic effect, in order to form a high-frequency electric field for polarizing a light beam, thus constituting a microstrip line, as in the conventional element. The third electrode is spaced apart from the second electrode on the substrate in order to form another electric field for canceling the polarized light by the high-frequency electric field. In an electrical signal waveform measuring apparatus of this invention, an electrical signal obtained from an optical detection system coupled to the electrooptic effect element is fed back to form a closed loop in the third electrode.

대표청구항 ▼

A coplanar electrooptic effect element, comprising: a substrate comprised of a material having an electrooptic effect, said substrate having opposite major surfaces and a Z axis which extends medially of said major surfaces; a pair of first coplanar strips, formed on one surface of said substrate, f

A coplanar electrooptic effect element, comprising: a substrate comprised of a material having an electrooptic effect, said substrate having opposite major surfaces and a Z axis which extends medially of said major surfaces; a pair of first coplanar strips, formed on one surface of said substrate, for forming a high-frequency electric field in a region between said first coplanar strips near said one surface; and a pair of second coplanar strips, formed on the other surface of said substrate and sandwiching said substrate together in relation to said first coplanar strips, for forming another electric field in a region between said second coplanar strips near said other surface, said other field being different from the high-frequency electric field formed by said first coplanar strips near said one surface; wherein the direction of said high-frequency field and said other field become parallel to the Z axis of said substrate near a center of said first coplanar strips and said second coplanar strips.