Patent ID: 9438348
Filing Date: 2016-09-06
CPC Classification: H04B,H04J

Claim Text:
1. At a first optical transceiver, a communication method comprising: generating a first optical carrier wave using a laser located at the first optical transceiver; generating a first modulated optical signal by modulating first data to be transmitted to a second optical transceiver onto the first optical carrier wave while leaving unmodulated a selected signaling dimension of the first optical carrier wave in the first modulated optical signal; receiving from the second optical transceiver a second modulated optical signal having the first optical carrier wave, wherein the selected signaling dimension has been modulated with second data at the second optical transceiver; and recovering the second data by optically detecting the second modulated optical signal while using a portion of the first optical carrier wave generated using the laser as a local oscillator signal for said optically detecting.