Optical wavelength division multiplexed system using...

Optical waveguides – With optical coupler – Plural

Reexamination Certificate

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C385S016000, C385S018000

Reexamination Certificate

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06901183

ABSTRACT:
An optical wavelength division multiplexed system uses wavelength splitters to split channels included in input light into different paths within the system. Odd-numbered channels are split into one path, and even-numbered channels are split into another path, providing increased isolation between channels. Using filters, the system then drops one or more of the isolated, split channels into paths referred to as dropped paths and allows the remaining channels to continue through the filters into output paths. The dropped paths are then combined into one, common dropped path, and the output paths are also combined into one, common output path.

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