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Fabrication of an elastomeric rib waveguide Bragg grating filter

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Abstract

We report the design and fabrication of a Bragg grating device on a silicone-based elastomer rib waveguide, constructed using solvent-assisted microcontact molding and polymer casting techniques. The waveguide design utilizes polydimethylsiloxane (PDMS) and hard polydimethylsiloxane (hPDMS) polymers as core and cladding materials, with a period of 0.55μm, a depth of 350  nm, and a grating length of 6 mm. Fabrication is relatively simple, with the hPDMS/PDMS waveguide and gratings cast from a two-layer mold made of a phenolic resin-based positive photoresist and an epoxy Novolak resin-based negative photoresist. The mold we have designed has a demonstrated operational lifespan in excess of ten successful waveguide fabrications. The transmission spectra of the resulting gratings were measured, with test results showing a band-rejection gain of −17 dB and a 3 dB bandwidth of 3  nm at transmission.

© 2009 Optical Society of America

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Corrections

Cheng-Sheng Huang, Edwin Yue-Bun Pun, and Wei-Chih Wang, "Fabrication of an elastomeric rib waveguide Bragg grating filter: publisher’s note," J. Opt. Soc. Am. B 28, 2855-2855 (2011)
https://opg.optica.org/josab/abstract.cfm?uri=josab-28-11-2855

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