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Florida Institute of Technology

Ce Su

Han Wang

Syed H Murshid

Bilas Chowdhury

Rayan Enaya

Greg Lovell

Engin Eyceyurt

A modified optical PAM communication system using multiple laser sources to generate each amplitude level. The systems can be applied separately or in conjunction with another modulation system such as SDM, MDM, WDM, TDM, or other communication systems. In an embodiment, a PAM-4 system will increase data rate by a factor of two, but more complicated schemes using more lasers can be utilized to generate higher efficiency schemes. For example, a 25 Gbps NRZ signal will give 50 Gbps PAM-4 signal and higher laser systems can generate PAM-8 or PAM-16 for 75 and 100 Gbps systems respectively. These can be further applied to SDM systems to generate higher data rates equivalent to the number of SDM channels multiplied by the PAM efficiency. In embodiments, the invention may combing PAM with WDM and SDM to achieve multiple bits per symbol.

System for achieving multiple bits per symbol in optical communications systems by combining spatial domain multiplexing and pulse amplitude modulation

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Melbourne, FL, United States of America

Ce Su