Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2006-11-28
2006-11-28
Bello, Agustin (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S083000
Reexamination Certificate
active
07142785
ABSTRACT:
A light branching/inserting apparatus which can easily control light signal wavelengths, and which can branch, insert or transmit light signals having an optional wavelength and optional multiplexed number, by using a wavelength selection filter utilizing acousto-optic effects. The apparatus comprises; an ADM node section10which has an AOTF11with four ports as a wavelength selection filter and is connected to a transmission path, an RF signal generator20which generates an RF signal of an optional frequency and applies the signal to the AOTF11, a selected wavelength-variable light branching section30which receives and processes the light signal output from the branching port of the AOTF11for each wavelength, a light inserting section40which generates an optional number of insertion light signals with optional wavelengths and sends the insertion light signals to an insertion port of the AOTF11, and a monitoring section50which monitors the spectrum of the light signal input/output to/from the ADM node section10.
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Chikama Terumi
Onaka Hiroshi
Otsuka Kazue
Bello Agustin
Fujitsu Limited
Staas & Halsey , LLP
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