Transitioning a filter function of a two-port lattice-form...

Details Transitioning a filter function of a two-port lattice-form... Transitioning a filter function of a two-port lattice-form...

2005-01-05

2008-10-14

Ngo, Chuong D (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S816000

Reexamination Certificate

active

07437392

ABSTRACT:
Optically coherent, two-port, serially cascaded-form optical delay line circuits can realize arbitrary signal processing functions identical to those of FIR digital filters with complex filter coefficients whilst maintaining a maximum optical transmission characteristic of 100%. The invention provides an iterative process for transitioning in a step-wise manner a filter function of an optical delay line circuit filter from a start filter function to a target filter function. The invention also describes a dynamic gain equalizer incorporating an optical delay line circuit filter.

REFERENCES:
patent: 5572611 (1996-11-01), Jinguji et al.
patent: 5680335 (1997-10-01), Ikeyama et al.
patent: 5867293 (1999-02-01), Kotten
patent: 7209670 (2007-04-01), Fludger et al.

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