Nanoelectromechanical resonant narrow-band amplifiers

Narrow band resonant grating of 100% reflection under normal incidence.

A resonant grating mirror comprising a multilayer submirror and a grating slab waveguide submirror exhibiting constructive mutual reflection is shown experimentally to provide zero transmission. Its reflection line width of less than 1 nm, its polarization selectivity and low overall loss make the device usable as a longitudinal mode filter in a disk laser in the 1000-1100 nm wavelength range.

A Design of Narrow-Band Band-Pass

C l c3 Abstract-In this paper, a design method is described for low-sensitivity narrow-band band-pass switched-capacitor filters (SCF's) using a pseudo-2-path principle and a capacitor-error-free voltage inversion. The proposed method is based on the low-pass to high-pass transformation using voltage inversion, the pseudo2-path principle, the capacitance-ratio reduction technique and a very low...

Effects of narrow-band pulse shaping on a resonant multilevel system

Evaluation of Efficacy and Safety of Combination of Narrow Band Ultraviolet B and Topical Calcipotriol Versus Narrow Band UVB alone in the Treatment of Vitiligo

Background: Narrow band Ultraviolet B (NBUVB) has been used successfully for the treatment of vitiligo. Recently, topical calcipotriol has also been used as immunotherapy or as a part of combination therapies. The aim of this study was to compare the clinical efficacy and safety of NBUVB and NBUVB plus topical calcipotriol in the treatment of generalized vitiligo.Methods: NBUVB phototherapy was...

Fiber Parametric Amplifiers for Wavelength Band Conversion

By using a loop configuration formed by a polarization beam splitter, we experimentally demonstrate that the existing wavelength-division multiplexing (WDM) sources in -band can be wavelength converted to the -band with low polarization sensitivity and low crosstalk. Using a fiber parametric amplifier as a band converter, we achieve experimentally 0.65-dB polarization sensitivity and 4.7-dB con...