The achievable information rates of optical communication networks have been widely increased over the past four decades with the introduction and development of optical amplifiers, coherent detection, advanced modulation formats, and digital signal processing techniques. These developments promoted the revolution of optical communication systems and the growth of Internet, towards the directio...

This technical report details the 40Gb/s optical transmission testbed established at the Lightwave Communications Laboratory. This testbed provides a foundation for future experimental research on high-speed optical transmission systems and related performance issues. It will facilitate the research on advanced optical modulation formats and the comparison of optical systems with various optica...

A handheld line information reader and a line information generator were developed for the efficient management of optical communication lines. The line information reader consists of a photo diode, trans-impedance amplifier, voltage amplifier, microcontroller unit, display panel, and communication modules. The line information generator consists of a laser diode, laser driving circuits, microc...

Several types of interconnection networks have been proposed for parallel processing. One of them is MIN’s (Multistage interconnection networks). With the better way of communication between processor and memory, MIN’s are less complex, good fault tolerance, high reliability, fast in communication and low cost. To achieving reliable, fast and flexible communication optical communication are nec...

Space-division multiplexing (SDM) uses multiplicity of space channels to increase capacity for optical communication. It is applicable for optical communication in both free space and guided waves. This paper focuses on SDM for fiber-optic communication using few-mode fibers or multimode fibers, in particular on the critical challenge of mode crosstalk. Multiple-input–multipleoutput (MIMO) equa...

SUMMARY We propose a novel channel model of satellite-to-ground optical transmission to achieve a global-scale high-capacity communication network. In addition, we compose an effective channel coding scheme based on low-density generator matrix (LDGM) code suitable for that channel. Because the first successful optical satellite communication demonstrations are quite recent, no practical channe...

This paper presents a new communication system using optical X waves which, in theory, can propagate to an infinite distance without spreading. In practice, when these waves are produced with a finite aperture and energy, they have a large depth of field. A system model using optical X waves as carriers to transfer signals is established. The relationship between optical X wave and the conventi...

Wireless Optical Link A. Jabeena, M. Jasmine Pemeena Priyadarsini , PRV Bharat, V Radhakrishna, A.Salma Faculty, Faculty, Students, B. Tech [ECE], School of Electronics and Communication Engineering, VIT, Vellore. 5 Student, B.E [ECE], Department of Electronics and Communication Engineering, UCEA, Arni E-mail: [email protected], [email protected] Abstract In wireless optical communication syste...