Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2009-01-23
2010-12-28
Pak, Sung H (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S028000
Reexamination Certificate
active
07860360
ABSTRACT:
A coupler and method of coupling a signal beam between from a circular-core fiber to a rectangular-core cross section fiber includes providing an optical coupler having an optical core with a high-aspect ratio cross section at one end and a circular cross section at an opposite end to receive a signal beam having a circular cross section. The signal beam is propagated from the circular fiber to the rectangular-core cross section fiber in a narrow, fast-axis direction while maintaining the size and divergence of the signal beam as it propagates. The signal beam is expanded in size while producing a collimated beam from the circular cross section end to the rectangular-core cross section end in a wide, slow-axis direction.
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Rockwell David Alan
Shkunov Vladimir V.
Pak Sung H
Pillsbury Winthrop Shaw & Pittman LLP
Raytheon Company
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