Optical waveguides – With optical coupler
Reexamination Certificate
2005-09-20
2005-09-20
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
C385S147000
Reexamination Certificate
active
06947621
ABSTRACT:
A method for performing optical signal and beam distribution in a heterodyne interferometer. A planar lightwave circuit is provided including a plurality of waveguide optical transmission elements and an input coupler and an output coupler arranged along the optical transmission elements. Optical pathlengths of the transmission elements are matched between the input coupler and the output coupler to compensate for thermal effects. Reference and measurement optical phases are determined employing the input coupler and the output coupler.
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Ames Lawrence Lowell
Anderson William Walter
Bell, Jr. Raymond Mark
Perkins Patrick Elliott
Lockheed Martin Corporation
McDermott Will & Emery LLP
Ullah Akm Enayet
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