Optical component having waveguides extending from a common...

Etching a substrate: processes – Forming or treating optical article

Reexamination Certificate

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Reexamination Certificate

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06921490

ABSTRACT:
A method of forming an optical component includes forming a first mask on an optical component precursor. The first mask is formed with a plurality of waveguide portions extending from a common portion. Each waveguide portion is positioned so as to protect a waveguide region of the optical component precursor where a waveguide is to be formed. The method also includes forming a second mask between waveguide portions of the first mask. The resistance of the second mask to etching varies along at least one dimension of the second mask.

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