发明名称 |
Coherent homodyne reflectometer. |
摘要 |
<p>A coherent optical time domain reflectometer of the kind including a light source (10), an optical coupling means (13) whereby light from the source is coupled into an optical transmission medium (14) and light reflected from the transmission medium is mixed together with a reference optical signal and is coupled to a detector (18). The coupler (13) is a 3 x 3 coupler with the mixed reflected light and reference signal being coupled out via two adjacent outputs to two respective inputs (16, 17) of a balanced detector (18).</p> |
申请公布号 |
EP0190859(A2) |
申请公布日期 |
1986.08.13 |
申请号 |
EP19860300530 |
申请日期 |
1986.01.27 |
申请人 |
INTERNATIONAL STANDARD ELECTRIC CORPORATION |
发明人 |
EPWORTH, RICHARD EDWARD;SMITH, DAVID FRANCIS;WRIGHT, STEPHEN |
分类号 |
G01M11/00;G01M11/02;G01N21/49;G01N21/55;G02B6/00 |
主分类号 |
G01M11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|