Optical directional coupler

Details Optical directional coupler Optical directional coupler

2006-11-29

2009-06-09

Peng, Charlie (Department: 2883)

Optical waveguides

With optical coupler

Particular coupling structure

C385S039000, C385S042000

Reexamination Certificate

active

07546014

ABSTRACT:
An optical directional coupler (1) comprises first and second straight optical waveguides (2, 3) having respective cores (2a,3a) extending longitudinally close to each other to form an optical coupler portion, and a tapered optical waveguide (4) having a core (4a) connected to the core (2a) of the first straight waveguide (2). The core (2a) of the first straight waveguide (2) has a centerline (2d). A width of the core (4a) of the tapered waveguide (4) becomes narrow toward the first straight waveguide (2) and a profile of the tapered waveguide (4) is asymmetric relative to the centerline (2d) of the core (2a) of the first straight waveguides (2).

REFERENCES:
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patent: 5526453 (1996-06-01), Wolf et al.
patent: 6134362 (2000-10-01), Au-Yeung et al.
patent: 6272268 (2001-08-01), Miller et al.
patent: 6907152 (2005-06-01), Takahashi et al.
patent: 06-308338 (1994-11-01), None
patent: 09-178967 (1997-11-01), None

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