Patent ID: 8023824

Claim:
A method for transmitting and receiving data across a wavelength division passive optical network, comprising the steps of: generating a first laser beam having a first wavelength; generating a second laser beam having a second wavelength; modulating said first laser beam with first downstream data; modulating said second laser beam with second downstream data, wherein said modulated second laser beam has a constant intensity; multiplexing said modulated first laser beam and said modulated second laser beam into a multiplexed laser beam; transmitting said multiplexed laser beam; receiving said multiplexed laser beam; demultiplexing said multiplexed laser beam into a third laser beam having said first wavelength and modulated with said first downstream data and a fourth laser beam having said second wavelength and modulated with said second downstream data; receiving said third laser beam at a first receiver; splitting said fourth laser beam into a fifth laser beam and a sixth laser beam; receiving said fifth laser beam at a second receiver: modulating said sixth laser beam with upstream data; transmitting said modulated sixth laser beam; and receiving said modulated sixth laser beam at a third receiver.