Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2005-12-20
2005-12-20
Chowdhury, Tarifur R. (Department: 2871)
Optical waveguides
With optical coupler
Plural
C385S015000, C385S016000, C385S039000, C385S040000, C359S199200, C359S199200, C359S199200
Reexamination Certificate
active
06978062
ABSTRACT:
A wavelength division multiplexed device is based on a transmission grating spectrometer having at least two diffractive optical elements. The WDM device provides flexible use and may be widely applied in WDM systems. The device is useful for multiplexing and demultiplexing, channel monitoring, and for adding and dropping channels. The device provides programmability in use as an add/drop multiplexer.
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Bastue Jens
Ibsen Per Eld
Khalfaoui Chaker
Pedersen Claus Friis
Rasmussen Michael
Altera Law Group LLC
Chowdhury Tarifur R.
Ibsen Photonics A/S
Wang George Y.
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