In this Article dispersion characteristic of conventional optical waveguide with helical winding at core – cladding interface has been obtained. The model dispersion characteristics of optical waveguide with helical winding at core-cladding interface have been obtained for five different pitch angles. This paper includes dispersion characteristics of optical waveguide with helical winding, and ...

In this paper, we present a solid-core Silica-based photonic crystal fiber (PCF) composed of hexagonal lattice of air-holes and calculate the effective index and chromatic dispersion of PCF for different physical parameters using the empirical relations method (ERM). These results are compared with the data obtained from the conventional multipole method (MPM). Our simulation results reveal tha...

The new version of scsh enables concurrent system programming with portable user-level threads. In scsh, threads behave like processes in many ways. Each thread receives its own set of process resources. Like Unix processes, forked threads can inherit resources from the parent thread. To store these resources scsh uses preserved thread fluids, a special kind of fluid variables. The paper gives ...

We have developed a portable user-level thread library RT-PTL on UNIX, which is intended to be used for soft realtime processings, such as multimedia systems. A user-level thread is known to be more efficient than a kernel-level one because of its small context switch overhead. However, user-level thread has a restriction that if one thread issues a system call that forces the calling process t...

We have developed a portable mechanism for transparent thread migration in Java. This thread migration mechanism is implemented by instrumenting the original application code through a bytecode transformer without modifying the Java Virtual Machine. In this paper we examine how this thread state capturing mechanism can be extended such that JVM thread semantics can be maintained in mobile objec...