Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2005-06-28
2005-06-28
Healy, Brian (Department: 2883)
Optical waveguides
With optical coupler
Plural
C385S015000, C385S016000, C385S018000
Reexamination Certificate
active
06912338
ABSTRACT:
An optical signal noise reduction device and method, where optical control signals are input into a first ring optical fiber, so that optical signals propagates clockwise and counter-clockwise in the optical fiber, with optical control signals propagating either clockwise or counter-clockwise in the first ring optical fiber. Optica signals propagating in the same direction as the optical control signals are affected with cross phase modulation with the optical control signals, while optical signals propagating in the opposite direction as the optical control signals are not affected with cross phase modulation with the optical control signals. The two kinds of the optical signals are then interfered with each other at the optical output to reduce noise of the optical.
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Chujo Wataru
Sotobayashi Hideyuki
Healy Brian
Kalivoda Christopher M.
National Institute of Information and Communications Technology
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