We demonstrate a sub-GHz resolution, fully programmable Fourier-domain pulse shaper capable of generating arbitrary optical patterns for superconducting circuit platforms. This high resolution allows line-by-line shaping 1 GHz-spaced comb, and the can accommodate an bandwidth as large THz, which represents highest to our knowledge. Linear sampling with dual-comb system confirms independent cont...

Typical low drop-out (LDO) regulator architectures suffer from an inherent load regulation performance limitation. This limitation manifests itself through limited dc open-loop gain and results from stringent closed-loop bandwidth requirements. The frequency response of the system is highly sensitive to the loading conditions thereby making proper compensation a laborious endeavor. This paper d...

We demonstrate the first reprogrammable Fresnel transform pulse shaper based on a modified direct space-to-time pulse shaping apparatus. In our approach, the pulse shaping lens and mask are implemented by a dual-layer liquid crystal spatial light modulator. The input mask subsequently undergoes a free-space Fresnel transform which causes quadratic dispersion of the output temporal waveform. Whe...

A channel filter has been designed for Digital Down converter (DDC),that meets the standard of WiMAX in wireless communication. WiMAX is a technology emerging in the wireless communication system, in order to enhance the broadband wireless internet access. Digital Up Converter (DUC) and Digital Down Converter (DDC) are integral part of WiMAX system, that results in efficient low cost WiMAX syst...

The ability to tune color output of nanomaterials is very important for their applications in laser, optoelectronic device, color display and multiplexed biolabeling. Here we first propose a femtosecond pulse shaping technique to realize the up-conversion fluorescence tuning in lanthanide-doped nanocrystals dispersed in the glass. The multiple subpulse formation by a square phase modulation can...

A novel energy-efficient tunable impulse radio ultra wide band (IR-UWB) pulse generator (PG) for the high data rate 3.1 − 7.5 GHz band applications is proposed. Glitch generator, switched ring oscillator, buffer and pulse shaping filter are the key components. The circuit is scalable both in bandwidth and center frequency. The glitch generator combines falling edge of the input signal and its d...