Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-11-28
2006-11-28
Chowdhury, Tarifur R. (Department: 2871)
Optical waveguides
With optical coupler
Input/output coupler
C385S003000, C385S018000
Reexamination Certificate
active
07142750
ABSTRACT:
An optical coincidence system for modulating, switching, and routing optical signal pulses includes at least first and second inputs; at least one interfering device; and at least one selecting device including a differential receiving terminal and at least one output. The first and second inputs may receive optical signal pulses and optical control pulses, respectively, and direct each of the signal and control pulses toward respective signal and control paths. The interfering device may receive the signal and control pulses from the signal and control paths, respectively, and produce an interference pattern which corresponds to arrival times of the pulses. The selecting device may receive, at the differential receiving terminal, at least part of the interference pattern for selectively emitting output pulses from the output. The system may be arranged to narrow the width of the output pulses relative to that of the signal and control pulses.
REFERENCES:
patent: 5715076 (1998-02-01), Alexander et al.
patent: 6603904 (2003-08-01), Shahar
Chowdhury Tarifur R.
Eitan Law Group
Main Street Ventures LLC
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