Waveguide type optical splitter and waveguide type optical...

Details Waveguide type optical splitter and waveguide type optical... Waveguide type optical splitter and waveguide type optical...

2006-09-05

2006-09-05

Kim, Ellen E. (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S043000

Reexamination Certificate

active

07103247

ABSTRACT:
An object is to achieve both high-density output waveguides and uniformity of the losses between the output waveguides. In a waveguide type optical splitter, formed on a substrate are an input waveguide, a plurality of output waveguides, and a slab waveguide. The slab waveguide has an input end and an output end. The output end is in an arc shape with the input end or the vicinity being the center. The input waveguide is connected to the input end and a plurality of the output waveguides are connected to the output end. In the center portion of the output end, the output waveguides are directly connected to the output end. In the peripheral portion of the output end, the output waveguides are connected to the output end through the tapered waveguide whose waveguide width is widened towards the output end. Further, the opening width of the tapered waveguide becomes wider as going towards the periphery.

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