abstract:A guided ray (also bound ray or trapped ray) is a ray of light in a multi-mode optical fiber, which is confined by the core. For step index fiber, light entering the fiber will be guided if it falls within the acceptance cone of the fiber, that is if it makes an angle with the fiber axis that is less than the acceptance angle,
Installed as Ray Jennings' successor in May 2005, Arthur guided South Africa to their maiden Test series victory in Australia last year, as well as their first series win in England for over 40 years in 2008.