Today optical fiber based communication is the best, or may be the only choice for any long haul and high data rate communication application. One of the major reasons for the large scale deployment of mobile phone networks in our country and elsewhere is the reliable and cost effective optical fibre based back bone communication links. Telecommunication applications use single-mode fibres extensively as they offer the highest bandwidth (hundreds of GHz) and the lowest loss (0.16 dB/km). However, there are several applications where multimode fibers could be used for high speed applications. These applications include short haul, high data rate applications (say, 1 to 50 Gb/s, 300 to 1 km) as well as home networking applications where system cost, alignment and ease of use are the major considerations. The talk would briefly cover the use of multimode glass optical fibers (GOF) for short haul very high data rate applications, and the emerging area of plastic optical fibers (POF) for short haul, high data rate applications. The latter one is emerging as an attractive option for cheaper and easy to manage home networking applications.
Joseph John received the B.Sc. (Eng.) degree in electronics and communication from the University of Kerala, in 1978, the M.Tech. degree from the Indian Institute of Technology Madras, in 1980, and the Ph.D. degree from the University of Birmingham, U.K., in 1993. He was a Research Engineer with the Advanced Centre for Electronic Systems, Indian Institute of Technology Kanpur, from 1981 to 1989. Later from 1993 to 2010, he worked as a faculty in the Department of Electrical Engineering, Indian Institute of Technology Kanpur, at Assistant Professor/Associate Professor/Professor levels. Since June 2010, he has been a Professor with the Department of Electrical Engineering, Indian Institute of Technology Bombay. He has been involved in a variety of R&D projects both at IIT Kanpur and at IIT Bombay on optical fiber communications. Another interesting project completed successfully and transferred to the RDSO Lucknow, Indian Railways in 2010 was the ‘Trackside Bogie Monitoring System’ project developed as part of the Technology Mission on Railway Safety.