Patent ID: 7286769
Filing Date: 2007-10-23
Classification: H04B,H04L

Abstract:
1. A method of transmitting bidirectional communication data over a single optical fiber comprising the steps of: transmitting a first NRZ data stream having a 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 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 Manchester coded data stream at a second clocking frequency which is a selected multiple of said first clocking frequency; transmitting said Manchester coded data stream from said second location to said first location by said optical fiber at said selected wavelength of light; receiving said Manchester coded data stream at said first location; and converting said Manchester coded data stream to an NRZ data stream having said first frequency; wherein said second clocking frequency is three times (3×) said first clocking frequency, and said Manchester coded data stream includes three (3) pulses for each data bit and further comprising voting said three (3) pulses to determine at least two (2) equivalent pulses and providing an output NRZ data bit at said first frequency equivalent to said at least two (2) equivalent Manchester data bits.