We propose two techniques to suppress intrinsic sidelobe spectra in all-fiber acousto-optic
tunable filter using torsional acoustic wave. The techniques are based on either double-pass …

The intrinsic polarization dependence of an all-fiber tunable wavelength filter based on
polarization coupling by torsional acoustic wave is eliminated by employing a fiber loop …

We show that an all-fiber acousto-optic tunable filter based on polarization mode coupling
using torsional acoustic wave is immune to the fiber bend and physical contact in the …

Spectral shaping of an all-fiber torsional acousto-optic (AO) tunable filter is studied. The
technique is based on the axial modulation of AO coupling strength along a highly …

Torsional mode acousto-optic tunable filter (AOTF) is demonstrated using a metal-coated
birefringent optical fiber for an improved robustness. The changes in acoustic and optical …

We demonstrate a narrow-bandwidth acoustooptic tunable filter with very low polarization-
sensitivity using a dispersion-compensating fiber that has a large group index difference …

An all-fiber acousto-optic tunable bandpass filter has been proposed and experimentally
demonstrated by fabricating a lateral offset fiber splicing structure between the lead-in single …

A single-mode fiber (SMF) acousto-optic tunable filter (AOTF) with a tuning range of more
than 300? nm is demonstrated. The SMF used in the experiment has a ring of symmetric …

The etching effect on the bandwidth of acoustooptic coupling between core and cladding
modes in a single-mode (SM) fiber was investigated experimentally and theoretically. It was …

We propose and demonstrate a novel apodization technique for an elliptical-core two-mode
fiber acousto-optic filter by twisting the fiber and adjusting the acoustic polarization. The …