<p>A closed light path is traversed by two light beams passed in opposite direction. The beams are then superimposed and their phase shift evaluated. The light path is provided by a light conductor embedded in a setting material which damps out external sound waves. A highly uniform temp. distribution is set up along the light conductor owing to the nature of the setting material.</p>
申请公布号
EP0174668(B1)
申请公布日期
1989.08.02
申请号
EP19850111782
申请日期
1982.09.08
申请人
ALCATEL N.V.;STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT
发明人
AUCH, WILFRIED;MOHR, FRIEDEMANN;SCHLEMPER, EBERHARD;STEUDLE, WALTER