Photonic frequency division multiplexed FIFO buffer

Details Photonic frequency division multiplexed FIFO buffer Photonic frequency division multiplexed FIFO buffer

1995-05-24

1996-02-20

Boudreau, Leo H.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359139, 359140, 359135, H04J 1408

Patent

active

054934346

ABSTRACT:
A photonic frequency division multiplexed FIFO buffer capable of realizing a multiple input one output FIFO buffer or a one input one output FIFO buffer by using only a small number of buffers. This buffer is formed by a plurality of loop shaped optical waveguide delay lines for storing the input optical signals from the time division multiplexed input highway, which are connected in series by a plurality of 2.times.2 optical switches for selectively transferring the input optical signals among the loop shaped optical waveguide delay lines. This buffer also includes a 1.times.2 frequency channel selector, connected at a last stage of the loop shaped optical waveguide delay lines, for selectively outputting optical signals in specific frequency channels among the input optical signals stored by the last stage of the loop shaped optical waveguide delay lines as the output optical signals to the timeslots on the time division multiplexed output highway.

REFERENCES:
patent: 5103333 (1992-04-01), Koai
patent: 5115428 (1992-05-01), Ramanan et al.
patent: 5287316 (1994-02-01), Urushidani et al.

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