Use of higher order modulation techniques to transmit large aggregate data rates on an optical link with relatively low speed electronics

摘要: Systems and methods that increase the maximum data rate capacity per optical carrier on an link. The present invention intensity modulates with one or more (microwave) carriers have been higher order modulated (M-ary ASK, PSK, QAM, like) using bandwidth efficient modulation. Consequently, as number of bits/symbol is increased, bit increases without in occupied bandwidth. Thus, 2 bit/Hz channel may be transmitted.