Patent ID: 7761011
Filing Date: 2010-07-20
Classification: H04B

Abstract:
1. A communication system, comprising: an analog input configured to receive an analog signal; an analog to digital converter configured to provide a digital bit stream output based upon the analog input; an RF tone source configured to provide an RF tone; a multiplier configured to multiply the RF tone with the digital output bit stream and provide a multiplier output; a laser; a modulator configured to modulate the laser based upon the multiplier output thereby generating a modulated optical signal; an optical fiber arranged to carry the modulated optical signal; an optical detector arranged to receive the modulated optical signal from the optical fiber and provide a received output; a clock recovery circuitry configured to recover the RF tone; a digital to analog converter configured to digitized the received output and provide an analog output based upon the analog signal provided to the analog input; and an RF modulator configured to modulate the recovered analog output with the recovered RF tone and provide an RF tone modulated analog data output.