Detailed analyses of the short-term stability of the semiconductor fiber ring laser (SFRL) are presented. Analysis with rate equations shows that the relaxation oscillation effect does not exist in the SFRL. With a frequency-domain model, the mode competition in the SFRL is shown to be suppressed by the gain saturation effect of the semiconductor optical amplifier. Thus the observed good short-...

The surgical evaluation of haemorrhagic infarcted intestine and the decision for or against bowel resection require a lot of experience and are subjective. The aim of this prospective, clinical study was to examine the correlation between oxygen saturation and small intestinal wall (IW) thickness, using two objective methods. In 22 colicky horses, the blood flow, oxygen saturation and relative ...

Abstract The moisture contents of sugi ( Cryptomeria japonica ), todomatsu Abies sachalinensis ) and hinoki Chamaecyparis obtusa logs were estimated using a method content estimation proposed in our previous study. In the course estimation, it was revealed that regression line correlation between specific dynamic Young’s modulus E / ρ tangent loss (tan δ green wood different from moisture-condi...

Pinus forests are the second most planted in Brazil and wood obtained from them is mainly used as structural elements civil construction sector. The Brazilian standard that deals with calculations of wooden structures projects recommends use range 10% to 20% moisture content. Thus, this study aimed present an investigation about influence content on static modulus elasticity (MOEst) beams by tr...

A method developed for establishing moisture equilibrium curves for any combination of liquid and solid insulation is presented in this paper. Moisture saturation curves for natural and synthetic esters have been presented in the temperature range up to 140°C together with curve for mineral oil as a reference. Sorption isotherms have been established for cellulose based and aramid fiber based m...

We present a coupled-mode model of transverse mode instability in high-power fiber amplifiers, which takes the effect of gain saturation into account. The model provides simple semi-analytical formulas for the mode instability threshold, which are valid also for highly saturated amplifiers. The model is compared to recently published detailed numerical simulations of mode instability, and we fi...

We report on a novel scheme to fabricate a simple, cheap, and compact tunable fiber laser. The tuning is realized by splicing a piece of single-mode fiber to one end of an active double-clad fiber, while the other end of the single-mode fiber is spliced to a 15 mm long section of 105/125 multimode fiber. The fluorescence signal entering into the multimode fiber will be reproduced as single imag...

We perform a set of communication experiments spanning multiple sites on the heterogeneous Grid’5000 infrastructure in France. The backbone widely employs high-bandwidth optical fiber. Experiments with point-to-point MPI communications across sites show much lower bandwidth than expected for the optical fiber connections. This work proposes and tests an alternative implementation of cross-site ...

in a family of even hypersurfaces Roy Smith and Robert Varley Abstract Assume given a family of even local analytic hypersurfaces, whose central fiber has an isolated singularity at x = 0 which is not an ordinary double point. We prove that if the family is sufficiently general, for instance if the general fiber is smooth and the general singular fiber has only ordinary double points, then the ...