Patent ID: 8526826
Filing Date: 2013-09-03
Classification: H04B

Abstract:
1. A repeater comprising: a master unit for communicating with a base station of a mobile network; a plurality of remote units for communicating with mobile communications terminals; an optical waveguide connecting the remote units with the master unit for transmitting the optical signals from each of the remote units to the master unit; at least two of the remote units including lasers as transmitters for the optical signals; the plurality of lasers having similar nominal transmission wavelengths that are provided at a plurality of different nominal operating temperatures including a minimum nominal operating temperature and a maximum nominal operating temperature and being selectively controlled by adjusting their operating temperatures so that the lasers transmit on different transmission wavelengths; a drive unit configured for selectively adjusting the operating temperatures of the lasers to operate in a defined temperature range between a minimum temperature proximate the minimum nominal operating temperature and a maximum temperature proximate the maximum nominal operating temperature to provide a plurality of different transmission wavelengths for the remote units.