Transmission performance of 10-Gb/s optical duobinary transmission systems considering adjustable chirp of nonideal LiNbO3 mach-zehnder modulators due to applied voltage ratio and filter bandwidth

Sung Kee Kim; Jaehoon Lee; Jichai Jeong

doi:10.1109/50.920843

Transmission performance of 10-Gb/s optical duobinary transmission systems considering adjustable chirp of nonideal LiNbO₃ mach-zehnder modulators due to applied voltage ratio and filter bandwidth

Sung Kee Kim, Jaehoon Lee, Jichai Jeong

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

We investigate interplay between the residual and applied chirp of optical duobinary modulated signals in order to improve transmission performance. To find the best performance for 10-Gb/s optical duobinary transmission systems, we consider the residual chirp accompanying from the finite extinction ratio, the applied chirp adjusted by the applied voltage ratio (the chirp parameter) between two electrodes of LiNbO₃ modulators, and the bandwidth of electrical low-pass filters used in duobinary transmitters. The simulation results suggest that nearly zero chirp during the mark ('1') period and large peak chirp at the middle of the space ('0') provide the best transmission performance. This zero chirp around marks and high peak chirp at the middle of each space can be controlled by the applied voltage ratio between two electrodes of modulator and the filter bandwidth, respectively.

Original language	English
Pages (from-to)	465-470
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	19
Issue number	4
DOIs	https://doi.org/10.1109/50.920843
Publication status	Published - 2001 Apr

Bibliographical note

Funding Information:
Manuscript received February 15, 2000; revised January 3, 2001. This work was supported by Korea University and the University Research Program of the Ministry of Information & Communication, South Korea. The authors are with the Department of Radio Engineering, Korea University, Seoul 136-701 Korea. Publisher Item Identifier S 0733-8724(01)02750-5.

Keywords

Chirp modulation
Duobinary modulation
Optical communication
Propagating in dispersive media

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/50.920843

Cite this

Transmission performance of 10-Gb/s optical duobinary transmission systems considering adjustable chirp of nonideal LiNbO₃ mach-zehnder modulators due to applied voltage ratio and filter bandwidth. / Kim, Sung Kee; Lee, Jaehoon; Jeong, Jichai.
In: Journal of Lightwave Technology, Vol. 19, No. 4, 04.2001, p. 465-470.

Research output: Contribution to journal › Article › peer-review

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abstract = "We investigate interplay between the residual and applied chirp of optical duobinary modulated signals in order to improve transmission performance. To find the best performance for 10-Gb/s optical duobinary transmission systems, we consider the residual chirp accompanying from the finite extinction ratio, the applied chirp adjusted by the applied voltage ratio (the chirp parameter) between two electrodes of LiNbO3 modulators, and the bandwidth of electrical low-pass filters used in duobinary transmitters. The simulation results suggest that nearly zero chirp during the mark ('1') period and large peak chirp at the middle of the space ('0') provide the best transmission performance. This zero chirp around marks and high peak chirp at the middle of each space can be controlled by the applied voltage ratio between two electrodes of modulator and the filter bandwidth, respectively.",

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