We introduce and demonstrate a novel tunable optical filter that is insensitive to input
polarization. While the most obvious application of this novel filter is in compact …

We report enhanced polarization-independent tunable optical filters based on liquid crystal
(LC) and reactive mesogen (RM) polarization gratings (PGs). This new design achieves …

We demonstrate a polarization-independent tunable optical filter based on switchable
polarization gratings (PGs) formed using reactive and nonreactive liquid crystals (LCs). PGs …

We introduce and demonstrate a simple spectrophotometer system insensitive to input
polarization and with strong potential for compact and low-cost implementation. This …

Liquid crystal tunable filters are gaining wide acceptance in such diverse areas as optical
fiber communications, astronomy, remote sensing, pollution monitoring, color generation for …

We report widely tunable wavelength filters using liquid crystal (LC)-based long-period
waveguide gratings (LPWGs). The high birefringence and electrically tunable refractive …

A polarization independent Fabry–Perot liquid crystal tunable filter coupled to an optical
fiber is demonstrated using polarization diversity. Using a Wollaston prism, the beam splits …

We report our experimental success in realizing high efficiency liquid crystal polarization
gratings (LCPGs) on reflective substrates, with periods as small as 2.2 μm, enabling the …

Liquid crystal Fabry–Perot tunable filters are investigated in detail, with special attention to
their manufacturability, design, tolerances, and polarization independence. The calculations …

We experimentally demonstrate a reflective-mode liquid crystal polarization grating with high
reflectance, small grating period, and subms switching times. This switchable optical …