Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-08-30
2005-08-30
Kang, Juliana K. (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S088000, C385S129000
Reexamination Certificate
active
06937799
ABSTRACT:
A beam spot size enlarger waveguide for enlarging the beam spot size is connected to a beam spot size reducer waveguide for shrinking the beam spot size, along with the direction of the propagation of light beam; or the beam spot size enlarger waveguide, a beam spot size maintainer waveguide for maintaining the beam spot size constantly, and the beam spot size reducer waveguide are connected in the direction of the propagation of light beam.
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Journal of Lightwave Technology, vol. 16, No. 9 (Sep. 1998).
Kawamoto Kazumi
Matsushima Naoki
Hitachi , Ltd.
Kang Juliana K.
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