Interleaver-based multiplexer and demultiplexer
OwnerJonathan P. Lacey, Brian E. Lemoff +4inventors
InventorsJonathan P. Lacey, Brian E. Lemoff, William R. Trutna, JR., Glenn H. Rankin, Peter P. Zhao, Kenneth R. Wildnauer
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Abstract
A demultiplexer system having an interleaver for dividing the incoming wavelength-division multiplexed (WDM) signal into interleaved WDM signals and a single demultiplexing device for demultiplexing the de-interleaved WDM signals into single-channel signals is disclosed. Because a single demultiplexing device is used, size and cost savings can be realized.
Claims8
A demultiplexer system comprising:
- an interleaver for dividing an input multiplexed signal having a plurality of channels into two de-interleaved multiplexed signals, each de-interleaved multiplexed signal having a subset of said plurality of channels;
- and
- a single demultiplexing device for separating both said de-interleaved multiplexed signals into single-channel output signals.
A method for demultiplexing an N-channel multiplexed signal, the method comprising:
- dividing the N-channel multiplexed signal into two M-channel multiplexed signals where M is one half of M;
- and
- separating both of said M-channel signals into single-channel output signals using a single demultiplexing device.
A demultiplexer system comprising:
- a first-stage interleaver dividing an input multiplexed signal having a plurality of channels into two de-interleaved multiplexed signals,
- two second-stage interleavers, each second-stage interleaver dividing one of said de-interleaved multiplexed signals into two twice-de-interleaved multiplexed signals;
- a single demultiplexing device for demultiplexing said twice-de-interleaved multiplexed signals into single-channel output signals.
A multiplexer system comprising:
- a single multiplexing device for multiplexing a first set of single-channel signals into a first multiplexed signal and a second set of singled-channel signals into a second multiplexed signal;
- and
- an interleaver for combining said first multiplexed signal and said second multiplexed signal into a third multiplexed signal.
Dependencies are inferred from the claim text.