Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2006-01-31
2010-06-08
Liu, Li (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S182000, C398S183000, C398S186000, C398S188000, C398S201000
Reexamination Certificate
active
07734190
ABSTRACT:
A system and method for generating an optical return-to-zero signal. The system includes an electro-optical conversion system. The electro-optical conversion system is configured to receive an input electrical non-return-to-zero signal, process information associated with the input electrical non-return-to-zero signal, and generate a first electrical signal and a second electrical signal based on at least information associated with the input electrical non-return-to-zero signal. Additionally, the electro-optical conversion system is configured to delay a second electrical signal with respect to the first electrical signal by a predetermined period of time, process information associated with the first electrical signal and the delayed second electrical signal, and generate an output optical return-to-zero signal based on at least information associated with the first electrical signal and the delayed second electrical signal. The output optical return-to-zero signal is an optical differential return-to-zero signal, and the output optical return-to-zero signal is substantially free from any frequency chirp.
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FutureWei Technologies, Inc.
Liu Li
Townsend and Townsend / and Crew LLP
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