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We demonstrate low loss (0.7dB) efficient (>90%) tunable generation of OAM modes over a record 200nm in the visible spectral range using acousto-optic fiber gratings, of utility in numerous applications requiring spectrally diverse OAM light.
A highly stabilized electro-optic imaging system for measuring both the amplitude and phase of electric fields from on-wafer millimeter waveguides is presented. The near-field distribution at 95 GHz, launched with a GSG type on-wafer probe on a coplanar waveguide, is measured with a minimally invasive micro optic probe.
We present an electro-optic sensing system for power and electric field measurements at the W-band. An electro-optic probe was fabricated to be small enough to be inserted into a WR-10 waveguide to realize the endoscopic detection of fully guided electric fields. The intensity of the measured electric fields when propagating inside the field-calculable waveguide with respect to the applied power was...
A robust wavelength tunable filter is demonstrated based on the interaction of torsional acoustic wave and polarization modes in a metal-coated birefringent fiber. Good wavelength tunability with high efficiency are demonstrated with coiled metal-coated optical fiber.
We demonstrate a highly efficient acoustooptic mode converter for selective excitation of the higher-order modes in a four-mode fiber which guides the LP01, LP11, LP21, and LP02 modes at telecommunication wavelengths. The coupling efficiency and the mode extinction ratio are measured by analyzing the output far-field patterns. The acoustic resonance frequencies and the operating bandwidths are compared...
We demonstrate an acousto-optic mode converter for selective excitation of all the higher-order modes in a four-mode fiber eligible for mode division multiplexing in the telecommunication band.
We demonstrate an efficient and robust acousto-optic tunable polarization filter using a metal-coated fiber. The shift of resonant wavelength caused by the acoustic and optical effects originated from the metal coating is analyzed.
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