Optical waveguides – Accessories – Attenuator
Reexamination Certificate
2006-09-26
2006-09-26
Kim, Ellen E. (Department: 2874)
Optical waveguides
Accessories
Attenuator
C385S019000, C359S227000
Reexamination Certificate
active
07113689
ABSTRACT:
An MEMS variable optical attenuator includes a substrate having a planar surface, a micro-electric actuator arranged on the planar surface of the substrate, a pair of coaxially aligned optical waveguides having a receiving end and a transmitting end, respectively, and an optical shutter movable to a predetermined position between the receiving end and the transmitting end of the optical waveguides, and driven by the micro-electric actuator. A surface layer is formed on the optical shutter, has reflectivity less than 80% so as to allow incident light beams to partially transmit thereinto, and further has a sufficient light extinction ratio, thereby extinguishing the partially transmitted light beams therein.
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Hong Suk Kee
Hong Yoon Shik
Jung Sung Cheon
Kang Joon Seok
Lee Hyun Kee
Kim Ellen E.
Lowe Hauptman & Berner LLP
Samsung Electro-Mechanics Co., LTD
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