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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 25, Iss. 1 — Jan. 1, 2007
  • pp: 318–324

Comparison of Transmission Performance of 40-Gb/s Optical Duobinary and DCS-RZ Signals Using 10- and 40-Gb/s LiNbO3 Mach–Zehnder Modulators

Yonghoon Kim, Hodeok Jang, Sangil Kim, Seunghyun Oh, Jaehoon Lee, Kyoungsoo Kim, Hanlim Lee, and Jichai Jeong

Journal of Lightwave Technology, Vol. 25, Issue 1, pp. 318-324 (2007)


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Abstract

We investigated a cost-effective method using 10-Gb/s LiNbO3 Mach–Zehnder Modulators (MZMs) for transmitting 40-Gb/s duobinary nonreturn-to-zero (NRZ) and duobinary carrier-suppressed return-to-zero (DCS-RZ) signals. The transmission performance of the signals was investigated. The optimum bandwidths of low-pass filters in transmitters using 10- and 40-Gb/s LiNbO3 MZMs were also investigated. The calculated transmission performance of the transmitter using 10-Gb/s LiNbO3 MZMs was compared to that using 40-Gb/s LiNbO3 MZMs. The effect of the bias offset in the transmitters was investigated. Compared to duobinary-NRZ and DCS-RZ signals generated by a transmitter using 40-Gb/s LiNbO3 MZMs, those generated by using 10-Gb/s LiNbO3 MZMs can be transmitted with 1-dB power penalty over 480-km transmission.

© 2007 IEEE

Citation
Yonghoon Kim, Hodeok Jang, Sangil Kim, Seunghyun Oh, Jaehoon Lee, Kyoungsoo Kim, Hanlim Lee, and Jichai Jeong, "Comparison of Transmission Performance of 40-Gb/s Optical Duobinary and DCS-RZ Signals Using 10- and 40-Gb/s LiNbO3 Mach–Zehnder Modulators," J. Lightwave Technol. 25, 318-324 (2007)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-25-1-318


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