| 摘要 |
<p>The present invention relates to an apparatus and method which provide real-time detection of randomly varying instantaneous stateof polarization (SOP) and control the SOP at a user's will on the basis of detection value. In the present invention, an algorithm is employed that makes the SOP of the reference optical signal coincide with the SOP of the input optical signal, minimizing the calculation time for polarization control. Therefore, it is possible to detect an SOP and to control the SOP in a minimum time.</p> |
