October 2013

Design of a double clad optical fiber with particular consideration of leakage losses

In this paper we present a double clad optical fiber that consists of core, inner cladding and outer cladding. The refractive index of the core and the outer cladding are the same and the value of refractive index of the core is greater than the refractive index of inner cladding. The cutoff number Vc is calculated and plotted with respect to the ratio of the radius of inner cladding and the radius of the core....

Author(s): Chakresh Kumar, Girish Narah and Aroop Sharma

October 2013

Joint estimation of cochannel signals and direction finding

The need for fast adaptive algorithms for signal separation in dense environments is essential aspect in modern communications systems. For example, enhancement of mobile systems performance to allow different traffics, high quality and minimum delay is achievable in condition that the channel impairments and cohannel interference is reduced. In this paper, the performance of two types of signal separation and...

Author(s): Khairy Elbarbary, Hossam Eldin Abou-Bakr Badr, and Tarek Bahroun