发明名称 |
Ferro-electric azimuth rotator |
摘要 |
An electrically controllable azimuth optical rotator (10) includes a first quarterwave plate (16) for receiving a first beam of electromagnetic energy (22) having a first arbitrary polarization state, and outputting a second beam (122) in response to the first quarterwave plate (16). An electric voltage controlled ferro-electric variable phase retarder (20) aligned at approximately 45 degrees to the first quarterwave plate (16) receives the second beam 122 and provides a third beam 38 in response to the retarder (20). The electric voltage controlled ferro-electric variable phase retarder (20) is characterized by a phase shift of phi=2alpha, where alpha is a desired angle of rotation of the first arbitrary polarization state. To provide a voltage-controlled rotation, a second quarterwave plate (18) is aligned either parallel or perpendicular to the first quarterwave plate (16) for receiving the third beam (38) and outputting a fourth beam (46) in response to the retarder (20). As a result, the fourth beam (46) has a polarization state similar to the first arbitrary polarization state but rotated by alpha.
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申请公布号 |
US6700694(B2) |
申请公布日期 |
2004.03.02 |
申请号 |
US20020164866 |
申请日期 |
2002.08.14 |
申请人 |
CORNING APPLIED TECHNOLOGIES CORPORATION |
发明人 |
ZOU YINGYIN;WANG FEILING;ZHANG JINGWEN |
分类号 |
G02F1/01;G02F1/055;G02F1/21;(IPC1-7):G02F1/09;G02F1/035 |
主分类号 |
G02F1/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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