Patent ID: 6731873
Filing Date: 2004-05-04
Classification: H04L

Abstract:
A method of transmitting bidirectional communication data over a single optical fiber comprising the steps of:receiving a first NRZ (Non-Return to Zero) data stream having a first clocking frequency; transmitting said first NRZ coded data stream having said first clocking frequency from a first location to a second location by said optical fiber using a carrier having a selected wavelength of light; receiving said selected wavelength of light from said first location at said second location and recovering said first NRZ data stream; receiving a second NRZ data stream having said first clocking frequency at said second location; converting said second NRZ data stream to a combination or hybrid coded data stream, said combination data stream formed from a Manchester coded and an ON-OFF Keyed data stream, said combination or hybrid data stream having a second clocking frequency which is a selected multiple of said first clocking frequency; transmitting said combination coded data stream from said second location to said first location by said optical fiber at said selected wavelength of light; and converting said combination coded data stream to said second NRZ data stream having said first frequency.