Silica-based line-symmetric series-tapered (LSST) broadband directional coupler with asymmetric guides only in their parallel coupling regions

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Silica-based line-symmetric series-tapered (LSST) broadband directional coupler with asymmetric guides only in their parallel coupling regions

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Line-symmetric series-tapered (LSST) broadband directional couplers with asymmetric guides only in their parallel coupling regions are designed and fabricated using silica waveguides on Si. These couplers, which provide any wavelength-flattened response over the 1.3–1.55 µm range, are realised with a more detailed broadband coupling ratio design than a conventional LSST coupler.

Inspec keywords: optical directional couplers; optical communication equipment; optical losses; integrated optics

Other keywords: silica waveguides on Si; silica-based coupler; broadband directional coupler; wavelength-flattened response; 1.3 to 1.55 micron; broadband coupling ratio design; Si; SiO2-Si; asymmetric guides; parallel coupling regions; line-symmetric series-tapered coupler

Subjects: Optical communication devices, equipment and systems; Optical communication; Integrated optics; Integrated optics; Optical waveguides and couplers; Optical waveguides

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