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Requirements for Improvement in Transmission Performance for an Optical Delay Interferometer based Optical Duobinary Transmitters  

Lee, Dong-Soo (김포대학 IT학부)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.10, no.6, 2010 , pp. 119-123 More about this Journal
Abstract
The transmission performance of 10Gb/s optical duobinary transmitters implemented by using a Mach-Zehnder(MZ) modulator and an optical delay interferometer is presented. We investigated the theoretical impact of transmission systems by the modulator driving voltage ratio(=driving voltage/switching voltage) and the optical interferometer time delay to improve transmission distance using computer simulation. By reducing the driving voltage ratio and optimizing the partial bit time delay, the transmission performance has been improved greatly.
Keywords
Optical duobinary transmitter; Driving voltage ratio; Bit time delay; Eye diagram; Bit error rate(BER);
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