Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2006-10-03
2006-10-03
Song, Sarah (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S027000
Reexamination Certificate
active
07116860
ABSTRACT:
A efficient and inexpensive optical WDM network architecture with add and drop couplers. Add couplers and drop couplers connected to a network optical fiber with wavelength blocker units which filter out optical signals at selected wavelengths on the optical fiber. The wavelength blocker units are distributed among the add and drop couplers so that each segment of the optical fiber between pairs of neighboring wavelength blocker units has at least three add and drop couplers. More specifically, each segment has the following relationship:in-line-formulae description="In-line Formulae" end="lead"?THRU+ADD+DROP+LOCAL≦TOTALin-line-formulae description="In-line Formulae" end="tail"?where THRU is the number of channels passing through the segment; ADD is the number of channels added within the segment; DROP the number of channels dropped within the segment; LOCAL the number of channels confined within the segment; and TOTAL is the total capacity of the optical fiber.
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Barozzi Gianpaolo
Gerstel Ornan
Piciaccia Stefano
Viscardi Valerio
Aka Chan LLP
Cisco Technology Inc.
Song Sarah
LandOfFree
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