We report the first fabrication, to our knowledge, of polarization-rocking filters in highly birefringent elliptical microfibers. A rocking filter was made by periodically heating/twisting a microfiber with an ellipticity of ～0.7 and a diameter of ～2.8 μm along its major axis. Strong input polarization suppression of ～20 dB was achieved at a resonant wavelength of ～1556.4 nm with a device length of ～3 mm.
展开▼
