| http://www.w3.org/ns/prov#value | - The subject matter disclosed herein generally relates to the field of semiconductor device fabrication and, more particularly, to acid-stop structures that can be used to stop acids and other etchants from leaking under a die that has beenbonded to a wafer during processing of hybrid silicon-optical devices and have wavelength-independent low optical loss.BACKGROUND Waveguides are initially etched
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