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http://dx.doi.org/10.7840/kics.2015.40.10.1940

Analysis and Compensation of I/Q Amplitude Imbalance In Coherent PON Systems  

Kim, Nayeong (Electronics Engineering Department, Kookmin University)
Lee, Seungwoo (Electronics Engineering Department, Kookmin University)
Park, Youngil (Electronics Engineering Department, Kookmin University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.10, 2015 , pp. 1940-1946 More about this Journal
Abstract
An optical coherent system is considered for the next-generation optical access networks in enhancing the data rate and transmission distance. In this system, however, I/Q amplitude imbalance may occur at several parts of the system, leading to serious performance degradation. Asymmetric structure of a coherent receiver at the location of subscriber is one of the sources of I/Q imbalance. Therefore, this imbalance parameters must be removed or compensated to secure the transmission performance. In this paper, the source of I/Q amplitude imbalance is analyzed, and then the way to compensate for the imbalance at the receiver side is suggested. Performance after the compensation is estimated using simulation.
Keywords
Optical Coherent; Coherent Receiver; I/Q Imbalance; Optical coupler; Optical QPSK;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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