Optical interleaver

Details Optical interleaver Optical interleaver

2008-03-11

2008-03-11

Leung, Christina (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S085000

Reexamination Certificate

active

10862827

ABSTRACT:
An optical interleaver comprising a first optical 3×3 coupler for receiving a broadband optical signal at one input port thereof, a second 3×3 optical coupler, three differential delay lines connected in parallel port-to-port between output ports of the first optical 3×3 coupler and input ports of the second optical 3×3 coupler, an infinite impulse response (IIR) element disposed in each of two of the delay lines, and wherein optical signals travelling in the respective delay lines interfere at the second 3×3 coupler to produce three frequency shifted transmission channel output signals at respective output ports of the second 3×3 coupler.

REFERENCES:
patent: 6222958 (2001-04-01), Paiam
patent: 7206477 (2007-04-01), Madsen
patent: 2002/0126291 (2002-09-01), Qian et al.
Wang et al.; All-Fiber 3×3 Interleaver Design With Flat-Top Passband; IEEE Photonics Technology Letters; Jan. 2004; pp. 168-170; vol. 16, No. 1; U.S.A.

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