Reprogrammable optical phase array

Reprogrammable optical phase array.

A novel reprogrammable optical phase array (ROPA) device is presented as a reconfigurable electro-optic element. One specific application of the ROPA, a 1 x 6 electro-optic space switch, is fully described. Switching angles are within 2 degrees , and switching is achieved through a complementary metal-oxide semiconductor (CMOS) controlled, diffraction based, optical phase array in a bulk BaTiO3...

Phased array antenna using MEMS phase shifter

This article presents a phased array antenna employing MEMS phase shifter. The proposed phased array antenna consists of eight square patch antennas operating at 10.4 GHz with a bandwidth of 400 MHz. Feed line for each patch passes through a MEMS phase shifter realized by a series of bridges above the transmission line. The distance between the bridge and the transmission line underneath it is ...

Contrast Enhancement and Reversal of a Phase Spot Array using Nonlinear Optical Phase Filtering

An array of phase spots with poor intensity distribution has been contrast enhanced and reversed by nonlinear phase filtering techniques using Zinc Tetraphenyl Porphyrin as the variable phase filter in the 4-f imaging system, whose refractive index depends on the intensity of the incident beam. The intensity distributions of the unfiltered and filtered images were compared to explicitly show th...

Optical freezing array BINARY

Microelectromechanical reprogrammable logic device

In modern computing, the Boolean logic operations are set by interconnect schemes between the transistors. As the miniaturization in the component level to enhance the computational power is rapidly approaching physical limits, alternative computing methods are vigorously pursued. One of the desired aspects in the future computing approaches is the provision for hardware reconfigurability at ru...