| http://www.w3.org/ns/prov#value | - The lower cladding layer 114 can be any of a variety of materials that have a lower index of refraction than the waveguide core 116B. The lower cladding layer 114 can include organic and inorganic materials, such as silicon dioxide, silicon nitride, polyarylenes, ethers, parylenes, polynorbomenes, polyimides, epoxies, or other polymer materials, or porous low-k dielectrics, or semiconductor or oth
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