发明名称 |
Controllably variable optical attenuator |
摘要 |
A controllable attenuator includes a pair of collimators respectively connected to input and output fibers. A pair of reflection devices are respectively positioned behind the pair of collimators opposite to the corresponding input and output fibers. A U-like light path is defined among the pair of collimators and the pair of reflection devices. A neutral density filter is moveably positioned between the pair of reflection devices wherein a moving direction of the filter is preferably parallel to a longitudinal direction of the pair of collimators. An ND filter position indicator such as a potentiometer, is used to dynamically monitor attenuation setting.
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申请公布号 |
US6674953(B2) |
申请公布日期 |
2004.01.06 |
申请号 |
US20020038079 |
申请日期 |
2002.01.02 |
申请人 |
ALLIANCE FIBER OPTIC PRODUCTS, INC. |
发明人 |
SHI ZHUPEI;LU TONGXIN;TRAN MINH;LEE JERRY |
分类号 |
G02B6/26;(IPC1-7):G02B6/00;G02B27/28;G02B5/30;G02B27/14 |
主分类号 |
G02B6/26 |
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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