Abstract
We experimentally and theoretically demonstrate a tunable bandpass filter based on the optically induced transparency enabled by dynamical interference of continuous radiation modes and localized whispering gallery modes (WGMs) with a surface nanoscale axial photonics (SNAP) platform. The tunability in bandwidth and power transfer efficiency is achieved by scanning the microfiber which achieves a high power transfer efficiency up to 1.43, high out-of-band rejection of ∼31 dB, and bandwidth tunability of 30.6 MHz ∼ 2.32 GHz. The combination of easy alignment, fiber compatibility, high efficiency, and robust wide-range tunability facilitates applications ranging from quantum optics to photonic networks.
Published Version
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