The invention provides a monitor for monitoring the condition of fibre optic communication cables. The system employs one or more of the optical fibres of a cable to monitor the cable structure for damage or kinks. By using two separate laser sources and simultaneously monitoring the optical losses at...http://www.google.es/patents/US5349182?utm_source=gb-gplus-sharePatente US5349182 - Fiber optic cable moisture monitoring system
