Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2005-07-19
2005-07-19
Kang, Juliana (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S011000, C398S152000, C398S161000
Reexamination Certificate
active
06920261
ABSTRACT:
According to the cross phase modulation suppressing device of the present invention, the wavelength multiplexing optical signal from an optical fiber having polarization orthogonality between the adjacent channels is split for every channel and the split optical signals are led to delaying optical waveguides of different lengths by the AWG (Arrayed Waveguide Grating) connected to a second port of an optical circulator, and the split optical signals with each delay added are reflected by the Farraday mirrors in polarization states orthogonal to each other and again led to the delaying optical waveguides. The reflected lights are combined by the AWG and supplied to a third port of the optical circulator as the wavelength multiplexing optical signal with orthogonality of polarization states kept between the adjacent channels.
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Japanese Office Action with partial English translation; certification.
Inada Yoshihisa
Ito Toshiharu
Kang Juliana
McGinn & Gibb PLLC
NEC Corporation
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