Phased array laser diode - SAWTOOTH channeled array.

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 ...

AlGaAs Phased Array Laser for Optical Communications

Diode-laser-array-pumped neodymium slab oscillators.

A high-power multistripe diode-laser array has been used to pump miniature zigzag slab oscillators of Nd:YAG and Nd:glass. With Nd:YAG we have demonstrated output at 1.06 microm of 70-kW peak power and 585-mW average power with an electrical-to-optical efficiency of 4%. In this experiment the Nd:glass lasers were limited to 160-mW average power and less efficiency than the Nd:YAG. The differenc...

Jammed-array wideband sawtooth filter.

We present an all-optical passive low-cost spectral filter that exhibits a high-resolution periodic sawtooth spectral pattern without the need for active optoelectronic components. The principle of the filter is the partial masking of a phased array of virtual light sources with multiply jammed diffraction orders. We utilize the filter's periodic linear map between frequency and intensity to de...

A Trinary-Phased Array

A trinary-phased array, in which a phase quantization unit of phase shifters is 120 degrees is examined. The phase quantization unit of 120 degrees is the roughest value in practical phased array applications. Despite its rough phase quantization, the sidelobe level of less than −9 dB is attained by a genetic algorithm approach. key words: phased array, trinary phase shifter sidelobe reduc-