Abstract
An acousto-optic tunable bandpass filter was proposed and fabricated based on acoustic-flexural-wave-induced single-mode fiber birefringence via coupling the core mode to a single-cladding vector mode. In the experiment, the resonant wavelength and insertion loss could be electrically tuned with a span of nearly 100 nm and a lowest insertion loss of . The structure gains advantages of a large tuning range, fast speed, easy fabrication, low insertion loss, and zero frequency shift.
© 2018 Optical Society of America
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