Cavity-enhanced narrowband spectral filters using rare-earth ions doped in thin-film lithium niobate
Yuqi Zhao,
Dylan Renaud,
Demitry Farfurnik
et al.
Abstract:On-chip optical filters are fundamental components in optical signal processing. While rare-earth ion-doped crystals offer ultra-narrow optical filtering via spectral hole burning, their applications have primarily been limited to those using bulk crystals, restricting their utility. In this work, we demonstrate cavity-enhanced spectral filtering based on rare-earth ions in an integrated nonlinear optical platform. We incorporate rare-earth ions into high quality-factor ring resonators patterned in thin-film l… Show more
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