| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an apparatus which separates an optionally polarized signal to two components and makes the polarization of the components uniform. <P>SOLUTION: The apparatus includes a polarization beam splitter (8), at least two reflectors (10 and 12 or 14) and 1st and 2nd polarization rotation devices (20 and 60 or 80). The polarization beam splitter (8) and at least two reflectors (20 and 60 or 80) are arranged in a loop that is capable of propagating a clockwise signal component and a counterclockwise signal component. The 1st polarization rotation device (20) is located in the loop between the polarization beam splitter (8) and a 1st reflector (10) of the at least two reflectors. The 2nd polarization rotation device (60 or 80) is located in the loop between the polarization beam splitter (8) and an additional reflector (12 or 14) of the at least two reflectors. The 1st polarization rotation device (20) includes a serial arrangement of a reciprocal rotator (22) and nonreciprocal rotator (24). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
