Planar lightwave circuit and optical circuit

Details Planar lightwave circuit and optical circuit Planar lightwave circuit and optical circuit

2005-08-30

2005-08-30

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S014000

Reexamination Certificate

active

06937797

ABSTRACT:
A planar lightwave circuit is provided. The planar lightwave circuit includes a waveguide and a spotsize converter which is a part of the waveguide, wherein a core is embedded in a cladding in the waveguide, and the spotsize converter is located near an end face of a substrate on which the planar lightwave circuit is formed, the spotsize converter including: a core width fine-tuning part in an end face side of the substrate; and a core width converting part which follows the core width fine-tuning part; wherein core width of the spotsize converter is minimum at an end face of the substrate, a mean taper angle θ1of the core width fine-tuning part is larger than 0° and smaller than a mean taper angle θ2of the core width converting part.

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