Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2005-08-09
2005-08-09
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S016000
Reexamination Certificate
active
06928210
ABSTRACT:
An apparatus for demultiplexing optical signals at a large number of wavelengths using at least one wavelength-selective filter includes at least two wavelength-selective filters in each case for separation of signal components at one wavelength or at two or more wavelengths, located one behind the other in an oblique configuration in the beam path of the apparatus, and disposed such that the signal component that is transmitted by a first filter falls on the subsequent, second filter, the signal component that is reflected by the second filter not being reflected back to the first filter but, instead, running past the first filter, and the signal components that are reflected by the filters are joined together.
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Greenberg Laurence A.
Infineon - Technologies AG
Lin Tina M.
Locher Ralph E.
Stemer Werner H.
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