Abstract

Channel waveguides based on a polymer, 6-fluorinated-dianhydride/epoxy, which is actively doped with a Nd complex, Nd(thenoyltrifluoroacetone)3 1,10-phenanthroline, are fabricated by a simple and reproducible procedure, spin coating a photodefinable cladding polymer onto a thermally oxidized silicon wafer, photopatterning, backfilling with the active core polymer, and spin coating with an upper cladding layer. Photoluminescence at 1060nm from the Nd3+ ions with a lifetime of 130μs is observed. Optical gain at 1060nm is demonstrated in channel waveguides with different Nd3+ concentrations. By accounting for the waveguide loss of 0.1dBcm, an internal net gain of 8dB is demonstrated for a 5.6-cm-long channel waveguide amplifier. Owing to the nature of the Nd3+ complex, energy-transfer upconversion affects the gain only at Nd3+ concentrations above 1×1020cm3.

© 2009 Optical Society of America

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