Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2004-06-21
2010-12-28
Doan, Jennifer (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S015000, C385S027000
Reexamination Certificate
active
07860359
ABSTRACT:
An optical device for splitting/combining a first and a second continuous optical wavelength bands, each wider than 10 nm, has a first, a second, a third, a fourth and a fifth optical splitting devices optically coupled in cascade and a first, a second, a third and a fourth optical differential delay devices optically coupled to, and interleaved between, the optical splitting devices. A suitable choice of the coupling angles of the splitting devices and of the differential delays of the optical differential delay devices gives to the structure flattened passbands and stopbands and makes the optical device tolerant to fluctuations of the structural parameters. An apparatus includes the optical device for use in fiber-to-the-premises networks.
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Doan Jennifer
Finnegan Henderson Farabow Garrett & Dunner LLP
PGT Photonics S.p.A.
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